Configuring the Salt Minion¶

master¶

Default: salt

The hostname or IP address of the master. See ipv6 for IPv6 connections to the master.

Default: salt

master: salt

master: localhost:1234

master: '[2001:db8:85a3:8d3:1319:8a2e:370:7348]:1234'

master:
  - address1
  - address2

master: module.function
master_type: func

master:
  - address1
  - address2
master_type: failover

color¶

Default: True

By default output is colored. To disable colored output, set the color value to False.

ipv6¶

Default: None

Whether the master should be connected over IPv6. By default salt minion will try to automatically detect IPv6 connectivity to master.

ipv6: True

master_uri_format¶

Specify the format in which the master address will be evaluated. Valid options are default or ip_only. If ip_only is specified, then the master address will not be split into IP and PORT, so be sure that only an IP (or domain name) is set in the master configuration setting.

master_uri_format: ip_only

master_tops_first¶

Default: False

SLS targets defined using the Master Tops system are normally executed after any matches defined in the Top File. Set this option to True to have the minion execute the Master Tops states first.

master_tops_first: True

master_type¶

Default: str

The type of the master variable. Can be str, failover, func or disable.

master_type: str

If this option is str (default), multiple hot masters are configured. Minions can connect to multiple masters simultaneously (all master are "hot").

master_type: failover

If this option is set to failover, master must be a list of master addresses. The minion will then try each master in the order specified in the list until it successfully connects. master_alive_interval must also be set, this determines how often the minion will verify the presence of the master.

master_type: func

If the master needs to be dynamically assigned by executing a function instead of reading in the static master value, set this to func. This can be used to manage the minion's master setting from an execution module. By simply changing the algorithm in the module to return a new master ip/fqdn, restart the minion and it will connect to the new master.

As of version 2016.11.0 this option can be set to disable and the minion will never attempt to talk to the master. This is useful for running a masterless minion daemon.

master_type: disable

max_event_size¶

Default: 1048576

Passing very large events can cause the minion to consume large amounts of memory. This value tunes the maximum size of a message allowed onto the minion event bus. The value is expressed in bytes.

max_event_size: 1048576

enable_legacy_startup_events¶

Default: True

When a minion starts up it sends a notification on the event bus with a tag that looks like this: salt/minion/<minion_id>/start. For historical reasons the minion also sends a similar event with an event tag like this: minion_start. This duplication can cause a lot of clutter on the event bus when there are many minions. Set enable_legacy_startup_events: False in the minion config to ensure only the salt/minion/<minion_id>/start events are sent. Beginning with the 3001 Salt release this option will default to False.

enable_legacy_startup_events: True

master_failback¶

Default: False

If the minion is in multi-master mode and the :conf_minion`master_type` configuration option is set to failover, this setting can be set to True to force the minion to fail back to the first master in the list if the first master is back online.

master_failback: False

master_failback_interval¶

Default: 0

If the minion is in multi-master mode, the :conf_minion`master_type` configuration is set to failover, and the master_failback option is enabled, the master failback interval can be set to ping the top master with this interval, in seconds.

master_failback_interval: 0

master_alive_interval¶

Default: 0

Configures how often, in seconds, the minion will verify that the current master is alive and responding. The minion will try to establish a connection to the next master in the list if it finds the existing one is dead. This setting can also be used to detect master DNS record changes when a minion has been disconnected.

master_alive_interval: 30

master_shuffle¶

Default: False

master_shuffle: True

random_master¶

Default: False

If master is a list of addresses, shuffle them before trying to connect to distribute the minions over all available masters. This uses Python's random.shuffle method.

If multiple masters are specified in the 'master' setting as a list, the default behavior is to always try to connect to them in the order they are listed. If random_master is set to True, the order will be randomized instead upon Minion startup. This can be helpful in distributing the load of many minions executing salt-call requests, for example, from a cron job. If only one master is listed, this setting is ignored and a warning is logged.

random_master: True

retry_dns¶

Default: 30

Set the number of seconds to wait before attempting to resolve the master hostname if name resolution fails. Defaults to 30 seconds. Set to zero if the minion should shutdown and not retry.

retry_dns: 30

retry_dns_count¶

Default: None

Set the number of attempts to perform when resolving the master hostname if name resolution fails. By default the minion will retry indefinitely.

retry_dns_count: 3

master_port¶

Default: 4506

The port of the master ret server, this needs to coincide with the ret_port option on the Salt master.

master_port: 4506

publish_port¶

Default: 4505

The port of the master publish server, this needs to coincide with the publish_port option on the Salt master.

publish_port: 4505

source_interface_name¶

The name of the interface to use when establishing the connection to the Master.

Configuration example:

source_interface_name: bond0.1234

source_address¶

The source IP address or the domain name to be used when connecting the Minion to the Master. See ipv6 for IPv6 connections to the Master.

Configuration example:

source_address: if-bond0-1234.sjc.us-west.internal

source_ret_port¶

The source port to be used when connecting the Minion to the Master ret server.

Configuration example:

source_ret_port: 49017

source_publish_port¶

The source port to be used when connecting the Minion to the Master publish server.

Configuration example:

source_publish_port: 49018

user¶

Default: root

The user to run the Salt processes

user: root

sudo_user¶

Default: ''

The user to run salt remote execution commands as via sudo. If this option is enabled then sudo will be used to change the active user executing the remote command. If enabled the user will need to be allowed access via the sudoers file for the user that the salt minion is configured to run as. The most common option would be to use the root user. If this option is set the user option should also be set to a non-root user. If migrating from a root minion to a non root minion the minion cache should be cleared and the minion pki directory will need to be changed to the ownership of the new user.

sudo_user: root

pidfile¶

Default: /var/run/salt-minion.pid

The location of the daemon's process ID file

pidfile: /var/run/salt-minion.pid

root_dir¶

Default: /

This directory is prepended to the following options: pki_dir, cachedir, log_file, sock_dir, and pidfile.

root_dir: /

conf_file¶

Default: /etc/salt/minion

The path to the minion's configuration file.

conf_file: /etc/salt/minion

pki_dir¶

Default: <LIB_STATE_DIR>/pki/minion

The directory used to store the minion's public and private keys.

<LIB_STATE_DIR> is the pre-configured variable state directory set during installation via --salt-lib-state-dir. It defaults to /etc/salt. Systems following the Filesystem Hierarchy Standard (FHS) might set it to /var/lib/salt.

pki_dir: /etc/salt/pki/minion

id¶

Default: the system's hostname

Explicitly declare the id for this minion to use. Since Salt uses detached ids it is possible to run multiple minions on the same machine but with different ids.

id: foo.bar.com

minion_id_caching¶

Default: True

Caches the minion id to a file when the minion's id is not statically defined in the minion config. This setting prevents potential problems when automatic minion id resolution changes, which can cause the minion to lose connection with the master. To turn off minion id caching, set this config to False.

For more information, please see Issue #7558 and Pull Request #8488.

minion_id_caching: True

append_domain¶

Default: None

Append a domain to a hostname in the event that it does not exist. This is useful for systems where socket.getfqdn() does not actually result in a FQDN (for instance, Solaris).

append_domain: foo.org

minion_id_remove_domain¶

Default: False

Remove a domain when the minion id is generated as a fully qualified domain name (either by the user provided id_function, or by Salt). This is useful when the minions shall be named like hostnames. Can be a single domain (to prevent name clashes), or True, to remove all domains.

Examples:

• minion_id_remove_domain = foo.org - FQDN = king_bob.foo.org --> minion_id = king_bob - FQDN = king_bob.bar.org --> minion_id = king_bob.bar.org

• minion_id_remove_domain = True - FQDN = king_bob.foo.org --> minion_id = king_bob - FQDN = king_bob.bar.org --> minion_id = king_bob

For more information, please see issue 49212 and PR 49378.

minion_id_remove_domain: foo.org

minion_id_lowercase¶

Default: False

Convert minion id to lowercase when it is being generated. Helpful when some hosts get the minion id in uppercase. Cached ids will remain the same and not converted.

minion_id_lowercase: True

cachedir¶

Default: /var/cache/salt/minion

The location for minion cache data.

This directory may contain sensitive data and should be protected accordingly.

cachedir: /var/cache/salt/minion

color_theme¶

Default: ""

Specifies a path to the color theme to use for colored command line output.

color_theme: /etc/salt/color_theme

append_minionid_config_dirs¶

Default: [] (the empty list) for regular minions, ['cachedir'] for proxy minions.

Append minion_id to these configuration directories. Helps with multiple proxies and minions running on the same machine. Allowed elements in the list: pki_dir, cachedir, extension_modules. Normally not needed unless running several proxies and/or minions on the same machine.

append_minionid_config_dirs:
  - pki_dir
  - cachedir

verify_env¶

Default: True

Verify and set permissions on configuration directories at startup.

verify_env: True

cache_jobs¶

Default: False

The minion can locally cache the return data from jobs sent to it, this can be a good way to keep track of the minion side of the jobs the minion has executed. By default this feature is disabled, to enable set cache_jobs to True.

cache_jobs: False

grains¶

Default: (empty)

Statically assigns grains to the minion.

grains:
  roles:
    - webserver
    - memcache
  deployment: datacenter4
  cabinet: 13
  cab_u: 14-15

grains_blacklist¶

Default: []

Each grains key will be compared against each of the expressions in this list. Any keys which match will be filtered from the grains. Exact matches, glob matches, and regular expressions are supported.

grains_blacklist:
  - cpu_flags
  - zmq*
  - ipv[46]

grains_cache¶

Default: False

The minion can locally cache grain data instead of refreshing the data each time the grain is referenced. By default this feature is disabled, to enable set grains_cache to True.

grains_cache: False

grains_cache_expiration¶

Default: 300

Grains cache expiration, in seconds. If the cache file is older than this number of seconds then the grains cache will be dumped and fully re-populated with fresh data. Defaults to 5 minutes. Will have no effect if grains_cache is not enabled.

grains_cache_expiration: 300

grains_deep_merge¶

Default: False

The grains can be merged, instead of overridden, using this option. This allows custom grains to defined different subvalues of a dictionary grain. By default this feature is disabled, to enable set grains_deep_merge to True.

grains_deep_merge: False

For example, with these custom grains functions:

def custom1_k1():
    return {"custom1": {"k1": "v1"}}


def custom1_k2():
    return {"custom1": {"k2": "v2"}}

Without grains_deep_merge, the result would be:

custom1:
  k1: v1

With grains_deep_merge, the result will be:

custom1:
  k1: v1
  k2: v2

grains_refresh_every¶

Default: 0

The grains_refresh_every setting allows for a minion to periodically check its grains to see if they have changed and, if so, to inform the master of the new grains. This operation is moderately expensive, therefore care should be taken not to set this value too low.

Note: This value is expressed in minutes.

A value of 10 minutes is a reasonable default.

grains_refresh_every: 0

grains_refresh_pre_exec¶

Default: False

The grains_refresh_pre_exec setting allows for a minion to check its grains prior to the execution of any operation to see if they have changed and, if so, to inform the master of the new grains. This operation is moderately expensive, therefore care should be taken before enabling this behavior.

grains_refresh_pre_exec: True

metadata_server_grains¶

Default: False

Set this option to enable gathering of cloud metadata from http://169.254.169.254/latest for use in grains (see here for more information).

metadata_server_grains: True

fibre_channel_grains¶

Default: False

The fibre_channel_grains setting will enable the fc_wwn grain for Fibre Channel WWN's on the minion. Since this grain is expensive, it is disabled by default.

fibre_channel_grains: True

iscsi_grains¶

Default: False

The iscsi_grains setting will enable the iscsi_iqn grain on the minion. Since this grain is expensive, it is disabled by default.

iscsi_grains: True

nvme_grains¶

Default: False

The nvme_grains setting will enable the nvme_nqn grain on the minion. Since this grain is expensive, it is disabled by default.

nvme_grains: True

mine_enabled¶

Default: True

Determines whether or not the salt minion should run scheduled mine updates. If this is set to False then the mine update function will not get added to the scheduler for the minion.

mine_enabled: True

mine_return_job¶

Default: False

Determines whether or not scheduled mine updates should be accompanied by a job return for the job cache.

mine_return_job: False

mine_functions¶

Default: Empty

Designate which functions should be executed at mine_interval intervals on each minion. See this documentation on the Salt Mine for more information. Note these can be defined in the pillar for a minion as well.

example minion configuration file

mine_functions:
  test.ping: []
  network.ip_addrs:
    interface: eth0
    cidr: '10.0.0.0/8'

mine_interval¶

Default: 60

The number of minutes between mine updates.

mine_interval: 60

sock_dir¶

Default: /var/run/salt/minion

The directory where Unix sockets will be kept.

sock_dir: /var/run/salt/minion

enable_fqdns_grains¶

Default: True

In order to calculate the fqdns grain, all the IP addresses from the minion are processed with underlying calls to socket.gethostbyaddr which can take 5 seconds to be released (after reaching socket.timeout) when there is no fqdn for that IP. These calls to socket.gethostbyaddr are processed asynchronously, however, it still adds 5 seconds every time grains are generated if an IP does not resolve. In Windows grains are regenerated each time a new process is spawned. Therefore, the default for Windows is False. In many cases this value does not make sense to include for proxy minions as it will be FQDN for the host running the proxy minion process, so the default for proxy minions is False`. On macOS, FQDN resolution can be very slow, therefore the default for macOS is False as well. All other OSes default to True. This option was added here.

enable_fqdns_grains: False

enable_gpu_grains¶

Default: True

Enable GPU hardware data for your master. Be aware that the minion can take a while to start up when lspci and/or dmidecode is used to populate the grains for the minion, so this can be set to False if you do not need these grains.

enable_gpu_grains: False

outputter_dirs¶

Default: []

A list of additional directories to search for salt outputters in.

outputter_dirs: []

backup_mode¶

Default: ''

Make backups of files replaced by file.managed and file.recurse state modules under cachedir in file_backup subdirectory preserving original paths. Refer to File State Backups documentation for more details.

backup_mode: minion

acceptance_wait_time¶

Default: 10

The number of seconds to wait until attempting to re-authenticate with the master.

acceptance_wait_time: 10

acceptance_wait_time_max¶

Default: 0

The maximum number of seconds to wait until attempting to re-authenticate with the master. If set, the wait will increase by acceptance_wait_time seconds each iteration.

acceptance_wait_time_max: 0

rejected_retry¶

Default: False

If the master denies or rejects the minion's public key, retry instead of exiting. These keys will be handled the same as waiting on acceptance.

rejected_retry: False

random_reauth_delay¶

Default: 10

When the master key changes, the minion will try to re-auth itself to receive the new master key. In larger environments this can cause a syn-flood on the master because all minions try to re-auth immediately. To prevent this and have a minion wait for a random amount of time, use this optional parameter. The wait-time will be a random number of seconds between 0 and the defined value.

random_reauth_delay: 60

master_tries¶

Default: 1

The number of attempts to connect to a master before giving up. Set this to -1 for unlimited attempts. This allows for a master to have downtime and the minion to reconnect to it later when it comes back up. In 'failover' mode, which is set in the master_type configuration, this value is the number of attempts for each set of masters. In this mode, it will cycle through the list of masters for each attempt.

master_tries is different than auth_tries because auth_tries attempts to retry auth attempts with a single master. auth_tries is under the assumption that you can connect to the master but not gain authorization from it. master_tries will still cycle through all of the masters in a given try, so it is appropriate if you expect occasional downtime from the master(s).

master_tries: 1

auth_tries¶

Default: 7

The number of attempts to authenticate to a master before giving up. Or, more technically, the number of consecutive SaltReqTimeoutErrors that are acceptable when trying to authenticate to the master.

auth_tries: 7

auth_timeout¶

Default: 5

When waiting for a master to accept the minion's public key, salt will continuously attempt to reconnect until successful. This is the timeout value, in seconds, for each individual attempt. After this timeout expires, the minion will wait for acceptance_wait_time seconds before trying again. Unless your master is under unusually heavy load, this should be left at the default.

auth_timeout: 5

auth_safemode¶

Default: False

If authentication fails due to SaltReqTimeoutError during a ping_interval, this setting, when set to True, will cause a sub-minion process to restart.

auth_safemode: False

request_channel_timeout¶

Default: 30

The default timeout timeout for request channel requests. This setting can be used to tune minions to better handle long running pillar and file client requests.

request_channel_timeout: 30

request_channel_tries¶

Default: 3

The default number of times the minion will try request channel requests. This setting can be used to tune minions to better handle long running pillar and file client requests by retrying them after a timeout happens.

request_channel_tries: 3

ping_interval¶

Default: 0

Instructs the minion to ping its master(s) every n number of minutes. Used primarily as a mitigation technique against minion disconnects.

ping_interval: 0

random_startup_delay¶

Default: 0

The maximum bound for an interval in which a minion will randomly sleep upon starting up prior to attempting to connect to a master. This can be used to splay connection attempts for cases where many minions starting up at once may place undue load on a master.

For example, setting this to 5 will tell a minion to sleep for a value between 0 and 5 seconds.

random_startup_delay: 5

recon_default¶

Default: 1000

The interval in milliseconds that the socket should wait before trying to reconnect to the master (1000ms = 1 second).

recon_default: 1000

recon_max¶

Default: 10000

The maximum time a socket should wait. Each interval the time to wait is calculated by doubling the previous time. If recon_max is reached, it starts again at the recon_default.

Short example:

• reconnect 1: the socket will wait 'recon_default' milliseconds

• reconnect 2: 'recon_default' * 2

• reconnect 3: ('recon_default' * 2) * 2

• reconnect 4: value from previous interval * 2

• reconnect 5: value from previous interval * 2

• reconnect x: if value >= recon_max, it starts again with recon_default

recon_max: 10000

recon_randomize¶

Default: True

Generate a random wait time on minion start. The wait time will be a random value between recon_default and recon_default + recon_max. Having all minions reconnect with the same recon_default and recon_max value kind of defeats the purpose of being able to change these settings. If all minions have the same values and the setup is quite large (several thousand minions), they will still flood the master. The desired behavior is to have time-frame within all minions try to reconnect.

recon_randomize: True

loop_interval¶

Default: 1

The loop_interval sets how long in seconds the minion will wait between evaluating the scheduler and running cleanup tasks. This defaults to 1 second on the minion scheduler.

loop_interval: 1

pub_ret¶

Default: True

Some installations choose to start all job returns in a cache or a returner and forgo sending the results back to a master. In this workflow, jobs are most often executed with --async from the Salt CLI and then results are evaluated by examining job caches on the minions or any configured returners. WARNING: Setting this to False will disable returns back to the master.

pub_ret: True

return_retry_timer¶

Default: 5

The default timeout for a minion return attempt.

return_retry_timer: 5

return_retry_timer_max¶

Default: 10

The maximum timeout for a minion return attempt. If non-zero the minion return retry timeout will be a random int between return_retry_timer and return_retry_timer_max

return_retry_timer_max: 10

return_retry_tries¶

Default: 3

The maximum number of retries for a minion return attempt.

return_retry_tries: 3

cache_sreqs¶

Default: True

The connection to the master ret_port is kept open. When set to False, the minion creates a new connection for every return to the master.

cache_sreqs: True

ipc_mode¶

Default: ipc

Windows platforms lack POSIX IPC and must rely on slower TCP based inter- process communications. ipc_mode is set to tcp on such systems.

ipc_mode: ipc

ipc_write_buffer¶

Default: 0

The maximum size of a message sent via the IPC transport module can be limited dynamically or by sharing an integer value lower than the total memory size. When the value dynamic is set, salt will use 2.5% of the total memory as ipc_write_buffer value (rounded to an integer). A value of 0 disables this option.

ipc_write_buffer: 10485760

tcp_pub_port¶

Default: 4510

Publish port used when ipc_mode is set to tcp.

tcp_pub_port: 4510

tcp_pull_port¶

Default: 4511

Pull port used when ipc_mode is set to tcp.

tcp_pull_port: 4511

transport¶

Default: zeromq

Changes the underlying transport layer. ZeroMQ is the recommended transport while additional transport layers are under development. Supported values are zeromq and tcp (experimental). This setting has a significant impact on performance and should not be changed unless you know what you are doing!

transport: zeromq

syndic_finger¶

Default: ''

The key fingerprint of the higher-level master for the syndic to verify it is talking to the intended master.

syndic_finger: 'ab:30:65:2a:d6:9e:20:4f:d8:b2:f3:a7:d4:65:50:10'

http_connect_timeout¶

Default: 20

HTTP connection timeout in seconds. Applied when fetching files using tornado back-end. Should be greater than overall download time.

http_connect_timeout: 20

http_request_timeout¶

Default: 3600

HTTP request timeout in seconds. Applied when fetching files using tornado back-end. Should be greater than overall download time.

http_request_timeout: 3600

proxy_host¶

Default: ''

The hostname used for HTTP proxy access.

proxy_host: proxy.my-domain

proxy_port¶

Default: 0

The port number used for HTTP proxy access.

proxy_port: 31337

proxy_username¶

Default: ''

The username used for HTTP proxy access.

proxy_username: charon

proxy_password¶

Default: ''

The password used for HTTP proxy access.

proxy_password: obolus

no_proxy¶

Default: []

List of hosts to bypass HTTP proxy

no_proxy: [ '127.0.0.1', 'foo.tld' ]

use_yamlloader_old¶

Default: False

Use the pre-2019.2 YAML renderer. Uses legacy YAML rendering to support some legacy inline data structures. See the 2019.2.1 release notes for more details.

use_yamlloader_old: False

docker.update_mine¶

Default: True

If enabled, when containers are added, removed, stopped, started, etc., the mine will be updated with the results of docker.ps verbose=True all=True host=True. This mine data is used by mine.get_docker. Set this option to False to keep Salt from updating the mine with this information.

docker.update_mine: False

docker.compare_container_networks¶

Default: {'static': ['Aliases', 'Links', 'IPAMConfig'], 'automatic': ['IPAddress', 'Gateway', 'GlobalIPv6Address', 'IPv6Gateway']}

Specifies which keys are examined by docker.compare_container_networks.

docker.compare_container_networks:
  static:
    - Aliases
    - Links
    - IPAMConfig
  automatic:
    - IPAddress
    - Gateway
    - GlobalIPv6Address
    - IPv6Gateway

optimization_order¶

Default: [0, 1, 2]

In cases where Salt is distributed without .py files, this option determines the priority of optimization level(s) Salt's module loader should prefer.

optimization_order:
  - 2
  - 0
  - 1

disable_modules¶

Default: [] (all execution modules are enabled by default)

The event may occur in which the administrator desires that a minion should not be able to execute a certain module.

However, the sys module is built into the minion and cannot be disabled.

This setting can also tune the minion. Because all modules are loaded into system memory, disabling modules will lower the minion's memory footprint.

Modules should be specified according to their file name on the system and not by their virtual name. For example, to disable cmd, use the string cmdmod which corresponds to salt.modules.cmdmod.

disable_modules:
  - test
  - solr

disable_returners¶

Default: [] (all returners are enabled by default)

If certain returners should be disabled, this is the place

disable_returners:
  - mongo_return

whitelist_modules¶

Default: [] (Module whitelisting is disabled. Adding anything to the config option will cause only the listed modules to be enabled. Modules not in the list will not be loaded.)

This option is the reverse of disable_modules. If enabled, only execution modules in this list will be loaded and executed on the minion.

Note that this is a very large hammer and it can be quite difficult to keep the minion working the way you think it should since Salt uses many modules internally itself. At a bare minimum you need the following enabled or else the minion won't start.

whitelist_modules:
  - cmdmod
  - test
  - config

module_dirs¶

Default: []

A list of extra directories to search for Salt modules

module_dirs:
  - /var/lib/salt/modules

returner_dirs¶

Default: []

A list of extra directories to search for Salt returners

returner_dirs:
  - /var/lib/salt/returners

states_dirs¶

Default: []

A list of extra directories to search for Salt states

states_dirs:
  - /var/lib/salt/states

grains_dirs¶

Default: []

A list of extra directories to search for Salt grains

grains_dirs:
  - /var/lib/salt/grains

render_dirs¶

Default: []

A list of extra directories to search for Salt renderers

render_dirs:
  - /var/lib/salt/renderers

utils_dirs¶

Default: []

A list of extra directories to search for Salt utilities

utils_dirs:
  - /var/lib/salt/utils

cython_enable¶

Default: False

Set this value to true to enable auto-loading and compiling of .pyx modules, This setting requires that gcc and cython are installed on the minion.

cython_enable: False

enable_zip_modules¶

Default: False

Set this value to true to enable loading of zip archives as extension modules. This allows for packing module code with specific dependencies to avoid conflicts and/or having to install specific modules' dependencies in system libraries.

enable_zip_modules: False

providers¶

Default: (empty)

A module provider can be statically overwritten or extended for the minion via the providers option. This can be done on an individual basis in an SLS file, or globally here in the minion config, like below.

providers:
  service: systemd

modules_max_memory¶

Default: -1

Specify a max size (in bytes) for modules on import. This feature is currently only supported on *NIX operating systems and requires psutil.

modules_max_memory: -1

extmod_whitelist/extmod_blacklist¶

By using this dictionary, the modules that are synced to the minion's extmod cache using saltutil.sync_* can be limited. If nothing is set to a specific type, then all modules are accepted. To block all modules of a specific type, whitelist an empty list.

extmod_whitelist:
  modules:
    - custom_module
  engines:
    - custom_engine
  pillars: []

extmod_blacklist:
  modules:
    - specific_module

Valid options:

• beacons

• clouds

• sdb

• modules

• states

• grains

• renderers

• returners

• proxy

• engines

• output

• utils

• pillar

state_top¶

Default: top.sls

The state system uses a "top" file to tell the minions what environment to use and what modules to use. The state_top file is defined relative to the root of the base environment.

state_top: top.sls

state_top_saltenv¶

This option has no default value. Set it to an environment name to ensure that only the top file from that environment is considered during a highstate.

state_top_saltenv: dev

top_file_merging_strategy¶

Default: merge

When no specific fileserver environment (a.k.a. saltenv) has been specified for a highstate, all environments' top files are inspected. This config option determines how the SLS targets in those top files are handled.

When set to merge, the base environment's top file is evaluated first, followed by the other environments' top files. The first target expression (e.g. '*') for a given environment is kept, and when the same target expression is used in a different top file evaluated later, it is ignored. Because base is evaluated first, it is authoritative. For example, if there is a target for '*' for the foo environment in both the base and foo environment's top files, the one in the foo environment would be ignored. The environments will be evaluated in no specific order (aside from base coming first). For greater control over the order in which the environments are evaluated, use env_order. Note that, aside from the base environment's top file, any sections in top files that do not match that top file's environment will be ignored. So, for example, a section for the qa environment would be ignored if it appears in the dev environment's top file. To keep use cases like this from being ignored, use the merge_all strategy.

When set to same, then for each environment, only that environment's top file is processed, with the others being ignored. For example, only the dev environment's top file will be processed for the dev environment, and any SLS targets defined for dev in the base environment's (or any other environment's) top file will be ignored. If an environment does not have a top file, then the top file from the default_top config parameter will be used as a fallback.

When set to merge_all, then all states in all environments in all top files will be applied. The order in which individual SLS files will be executed will depend on the order in which the top files were evaluated, and the environments will be evaluated in no specific order. For greater control over the order in which the environments are evaluated, use env_order.

top_file_merging_strategy: same

env_order¶

Default: []

When top_file_merging_strategy is set to merge, and no environment is specified for a highstate, this config option allows for the order in which top files are evaluated to be explicitly defined.

env_order:
  - base
  - dev
  - qa

default_top¶

Default: base

When top_file_merging_strategy is set to same, and no environment is specified for a highstate (i.e. environment is not set for the minion), this config option specifies a fallback environment in which to look for a top file if an environment lacks one.

default_top: dev

startup_states¶

Default: ''

States to run when the minion daemon starts. To enable, set startup_states to:

• highstate: Execute state.highstate

• sls: Read in the sls_list option and execute the named sls files

• top: Read top_file option and execute based on that file on the Master

startup_states: ''

sls_list¶

Default: []

List of states to run when the minion starts up if startup_states is set to sls.

sls_list:
  - edit.vim
  - hyper

start_event_grains¶

Default: []

List of grains to pass in start event when minion starts up.

start_event_grains:
  - machine_id
  - uuid

top_file¶

Default: ''

Top file to execute if startup_states is set to top.

top_file: ''

renderer¶

Default: jinja|yaml

The default renderer used for local state executions

renderer: jinja|json

test¶

Default: False

Set all state calls to only test if they are going to actually make changes or just post what changes are going to be made.

test: False

state_aggregate¶

Default: False

Automatically aggregate all states that have support for mod_aggregate by setting to True.

state_aggregate: True

Or pass a list of state module names to automatically aggregate just those types.

state_aggregate:
  - pkg

state_queue¶

Default: False

Instead of failing immediately when another state run is in progress, a value of True will queue the new state run to begin running once the other has finished. This option starts a new thread for each queued state run, so use this option sparingly.

state_queue: True

Additionally, it can be set to an integer representing the maximum queue size which can be attained before the state runs will fail to be queued. This can prevent runaway conditions where new threads are started until system performance is hampered.

state_queue: 2

state_verbose¶

Default: True

Controls the verbosity of state runs. By default, the results of all states are returned, but setting this value to False will cause salt to only display output for states that failed or states that have changes.

state_verbose: True

state_output¶

Default: full

The state_output setting controls which results will be output full multi line:

• full, terse - each state will be full/terse

• mixed - only states with errors will be full

• changes - states with changes and errors will be full

full_id, mixed_id, changes_id and terse_id are also allowed; when set, the state ID will be used as name in the output.

state_output: full

state_output_diff¶

Default: False

The state_output_diff setting changes whether or not the output from successful states is returned. Useful when even the terse output of these states is cluttering the logs. Set it to True to ignore them.

state_output_diff: False

state_output_profile¶

Default: True

The state_output_profile setting changes whether profile information will be shown for each state run.

state_output_profile: True

state_output_pct¶

Default: False

The state_output_pct setting changes whether success and failure information as a percent of total actions will be shown for each state run.

state_output_pct: False

state_compress_ids¶

Default: False

The state_compress_ids setting aggregates information about states which have multiple "names" under the same state ID in the highstate output.

state_compress_ids: False

autoload_dynamic_modules¶

Default: True

autoload_dynamic_modules turns on automatic loading of modules found in the environments on the master. This is turned on by default. To turn off auto-loading modules when states run, set this value to False.

autoload_dynamic_modules: True

clean_dynamic_modules¶

Default: True

clean_dynamic_modules keeps the dynamic modules on the minion in sync with the dynamic modules on the master. This means that if a dynamic module is not on the master it will be deleted from the minion. By default this is enabled and can be disabled by changing this value to False.

clean_dynamic_modules: True

saltenv¶

The default fileserver environment to use when copying files and applying states.

saltenv: dev

lock_saltenv¶

Default: False

For purposes of running states, this option prevents using the saltenv argument to manually set the environment. This is useful to keep a minion which has the saltenv option set to dev from running states from an environment other than dev.

lock_saltenv: True

snapper_states¶

Default: False

The snapper_states value is used to enable taking snapper snapshots before and after salt state runs. This allows for state runs to be rolled back.

For snapper states to function properly snapper needs to be installed and enabled.

snapper_states: True

snapper_states_config¶

Default: root

Snapper can execute based on a snapper configuration. The configuration needs to be set up before snapper can use it. The default configuration is root, this default makes snapper run on SUSE systems using the default configuration set up at install time.

snapper_states_config: root

global_state_conditions¶

Default: None

If set, this parameter expects a dictionary of state module names as keys and a list of conditions which must be satisfied in order to run any functions in that state module.

global_state_conditions:
  "*": ["G@global_noop:false"]
  service: ["not G@virtual_subtype:chroot"]

file_client¶

Default: remote

The client defaults to looking on the master server for files, but can be directed to look on the minion by setting this parameter to local.

file_client: remote

use_master_when_local¶

Default: False

When using a local file_client, this parameter is used to allow the client to connect to a master for remote execution.

use_master_when_local: False

file_roots¶

Default:

base:
  - /srv/salt

When using a local file_client, this parameter is used to setup the fileserver's environments. This parameter operates identically to the master config parameter of the same name.

file_roots:
  base:
    - /srv/salt
  dev:
    - /srv/salt/dev/services
    - /srv/salt/dev/states
  prod:
    - /srv/salt/prod/services
    - /srv/salt/prod/states

fileserver_followsymlinks¶

Default: True

By default, the file_server follows symlinks when walking the filesystem tree. Currently this only applies to the default roots fileserver_backend.

fileserver_followsymlinks: True

fileserver_ignoresymlinks¶

Default: False

If you do not want symlinks to be treated as the files they are pointing to, set fileserver_ignoresymlinks to True. By default this is set to False. When set to True, any detected symlink while listing files on the Master will not be returned to the Minion.

fileserver_ignoresymlinks: False

hash_type¶

Default: sha256

The hash_type is the hash to use when discovering the hash of a file on the local fileserver. The default is sha256, but md5, sha1, sha224, sha384, and sha512 are also supported.

hash_type: sha256

pillar_roots¶

Default:

base:
  - /srv/pillar

When using a local file_client, this parameter is used to setup the pillar environments.

pillar_roots:
  base:
    - /srv/pillar
  dev:
    - /srv/pillar/dev
  prod:
    - /srv/pillar/prod

on_demand_ext_pillar¶

Default: ['libvirt', 'virtkey']

When using a local file_client, this option controls which external pillars are permitted to be used on-demand using pillar.ext.

on_demand_ext_pillar:
  - libvirt
  - virtkey
  - git

decrypt_pillar¶

Default: []

A list of paths to be recursively decrypted during pillar compilation.

decrypt_pillar:
  - 'foo:bar': gpg
  - 'lorem:ipsum:dolor'

Entries in this list can be formatted either as a simple string, or as a key/value pair, with the key being the pillar location, and the value being the renderer to use for pillar decryption. If the former is used, the renderer specified by decrypt_pillar_default will be used.

decrypt_pillar_delimiter¶

Default: :

The delimiter used to distinguish nested data structures in the decrypt_pillar option.

decrypt_pillar_delimiter: '|'
decrypt_pillar:
  - 'foo|bar': gpg
  - 'lorem|ipsum|dolor'

decrypt_pillar_default¶

Default: gpg

The default renderer used for decryption, if one is not specified for a given pillar key in decrypt_pillar.

decrypt_pillar_default: my_custom_renderer

decrypt_pillar_renderers¶

Default: ['gpg']

List of renderers which are permitted to be used for pillar decryption.

decrypt_pillar_renderers:
  - gpg
  - my_custom_renderer

gpg_decrypt_must_succeed¶

Default: False

If this is True and the ciphertext could not be decrypted, then an error is raised.

Sending the ciphertext through basically is never desired, for example if a state is setting a database password from pillar and gpg rendering fails, then the state will update the password to the ciphertext, which by definition is not encrypted.

gpg_decrypt_must_succeed: False

pillarenv¶

Default: None

Isolates the pillar environment on the minion side. This functions the same as the environment setting, but for pillar instead of states.

pillarenv: dev

pillarenv_from_saltenv¶

Default: False

When set to True, the pillarenv value will assume the value of the effective saltenv when running states. This essentially makes salt '*' state.sls mysls saltenv=dev equivalent to salt '*' state.sls mysls saltenv=dev pillarenv=dev. If pillarenv is set, either in the minion config file or via the CLI, it will override this option.

pillarenv_from_saltenv: True

pillar_raise_on_missing¶

Default: False

Set this option to True to force a KeyError to be raised whenever an attempt to retrieve a named value from pillar fails. When this option is set to False, the failed attempt returns an empty string.

minion_pillar_cache¶

Default: False

The minion can locally cache rendered pillar data under cachedir/pillar. This allows a temporarily disconnected minion to access previously cached pillar data by invoking salt-call with the --local and --pillar_root=:conf_minion:cachedir/pillar options. Before enabling this setting consider that the rendered pillar may contain security sensitive data. Appropriate access restrictions should be in place. By default the saved pillar data will be readable only by the user account running salt. By default this feature is disabled, to enable set minion_pillar_cache to True.

minion_pillar_cache: False

file_recv_max_size¶

Default: 100

Set a hard-limit on the size of the files that can be pushed to the master. It will be interpreted as megabytes.

file_recv_max_size: 100

pass_to_ext_pillars¶

Specify a list of configuration keys whose values are to be passed to external pillar functions.

Suboptions can be specified using the ':' notation (i.e. option:suboption)

The values are merged and included in the extra_minion_data optional parameter of the external pillar function. The extra_minion_data parameter is passed only to the external pillar functions that have it explicitly specified in their definition.

If the config contains

opt1: value1
opt2:
  subopt1: value2
  subopt2: value3

pass_to_ext_pillars:
  - opt1
  - opt2: subopt1

the extra_minion_data parameter will be

{"opt1": "value1", "opt2": {"subopt1": "value2"}}

ssh_merge_pillar¶

Default: True

Merges the compiled pillar data with the pillar data already available globally. This is useful when using salt-ssh or salt-call --local and overriding the pillar data in a state file:

apply_showpillar:
  module.run:
    - name: state.apply
    - mods:
      - showpillar
    - kwargs:
          pillar:
              test: "foo bar"

If set to True, the showpillar state will have access to the global pillar data.

If set to False, only the overriding pillar data will be available to the showpillar state.

open_mode¶

Default: False

Open mode can be used to clean out the PKI key received from the Salt master, turn on open mode, restart the minion, then turn off open mode and restart the minion to clean the keys.

open_mode: False

master_finger¶

Default: ''

Fingerprint of the master public key to validate the identity of your Salt master before the initial key exchange. The master fingerprint can be found as master.pub by running "salt-key -F master" on the Salt master.

master_finger: 'ba:30:65:2a:d6:9e:20:4f:d8:b2:f3:a7:d4:65:11:13'

keysize¶

Default: 2048

The size of key that should be generated when creating new keys.

keysize: 2048

permissive_pki_access¶

Default: False

Enable permissive access to the salt keys. This allows you to run the master or minion as root, but have a non-root group be given access to your pki_dir. To make the access explicit, root must belong to the group you've given access to. This is potentially quite insecure.

permissive_pki_access: False

verify_master_pubkey_sign¶

Default: False

Enables verification of the master-public-signature returned by the master in auth-replies. Please see the tutorial on how to configure this properly Multimaster-PKI with Failover Tutorial

verify_master_pubkey_sign: True

If this is set to True, master_sign_pubkey must be also set to True in the master configuration file.

master_sign_key_name¶

Default: master_sign

The filename without the .pub suffix of the public key that should be used for verifying the signature from the master. The file must be located in the minion's pki directory.

master_sign_key_name: <filename_without_suffix>

autosign_grains¶

Default: not defined

The grains that should be sent to the master on authentication to decide if the minion's key should be accepted automatically.

Please see the Autoaccept Minions from Grains documentation for more information.

autosign_grains:
  - uuid
  - server_id

always_verify_signature¶

Default: False

If verify_master_pubkey_sign is enabled, the signature is only verified if the public-key of the master changes. If the signature should always be verified, this can be set to True.

always_verify_signature: True

cmd_blacklist_glob¶

Default: []

If cmd_blacklist_glob is enabled then any shell command called over remote execution or via salt-call will be checked against the glob matches found in the cmd_blacklist_glob list and any matched shell command will be blocked.

cmd_blacklist_glob:
  - 'rm * '
  - 'cat /etc/* '

cmd_whitelist_glob¶

Default: []

If cmd_whitelist_glob is enabled then any shell command called over remote execution or via salt-call will be checked against the glob matches found in the cmd_whitelist_glob list and any shell command NOT found in the list will be blocked. If cmd_whitelist_glob is NOT SET, then all shell commands are permitted.

cmd_whitelist_glob:
  - 'ls * '
  - 'cat /etc/fstab'

ssl¶

Default: None

TLS/SSL connection options. This could be set to a dictionary containing arguments corresponding to python ssl.wrap_socket method. For details see Tornado and Python documentation.

Note: to set enum arguments values like cert_reqs and ssl_version use constant names without ssl module prefix: CERT_REQUIRED or PROTOCOL_SSLv23.

ssl:
    keyfile: <path_to_keyfile>
    certfile: <path_to_certfile>
    ssl_version: PROTOCOL_TLSv1_2

encryption_algorithm¶

Default: OAEP-SHA1

The RSA encryption algorithm used by this minion when connecting to the master's request channel. Valid values are OAEP-SHA1 and OAEP-SHA224

signing_algorithm¶

Default: PKCS1v15-SHA1

The RSA signing algorithm used by this minion when connecting to the master's request channel. Valid values are PKCS1v15-SHA1 and PKCS1v15-SHA224

reactor¶

Default: []

Defines a salt reactor. See the Reactor documentation for more information.

reactor: []

reactor_refresh_interval¶

Default: 60

The TTL for the cache of the reactor configuration.

reactor_refresh_interval: 60

reactor_worker_threads¶

Default: 10

The number of workers for the runner/wheel in the reactor.

reactor_worker_threads: 10

reactor_worker_hwm¶

Default: 10000

The queue size for workers in the reactor.

reactor_worker_hwm: 10000

multiprocessing¶

Default: True

If multiprocessing is enabled when a minion receives a publication a new process is spawned and the command is executed therein. Conversely, if multiprocessing is disabled the new publication will be run executed in a thread.

multiprocessing: True

process_count_max¶

Default: -1

Limit the maximum amount of processes or threads created by salt-minion. This is useful to avoid resource exhaustion in case the minion receives more publications than it is able to handle, as it limits the number of spawned processes or threads. -1 is the default and disables the limit.

process_count_max: -1

log_file¶

Default: /var/log/salt/minion

The minion log can be sent to a regular file, local path name, or network location. See also log_file.

Examples:

log_file: /var/log/salt/minion

log_file: file:///dev/log

log_file: udp://loghost:10514

log_level¶

Default: warning

The level of messages to send to the console. See also log_level.

log_level: warning

Any log level below the info level is INSECURE and may log sensitive data. This currently includes: #. profile #. debug #. trace #. garbage #. all

log_level_logfile¶

Default: warning

The level of messages to send to the log file. See also log_level_logfile. When it is not set explicitly it will inherit the level set by log_level option.

log_level_logfile: warning

Any log level below the info level is INSECURE and may log sensitive data. This currently includes: #. profile #. debug #. trace #. garbage #. all

log_datefmt¶

Default: %H:%M:%S

The date and time format used in console log messages. See also log_datefmt.

log_datefmt: '%H:%M:%S'

log_datefmt_logfile¶

Default: %Y-%m-%d %H:%M:%S

The date and time format used in log file messages. See also log_datefmt_logfile.

log_datefmt_logfile: '%Y-%m-%d %H:%M:%S'

log_fmt_console¶

Default: [%(levelname)-8s] %(message)s

The format of the console logging messages. See also log_fmt_console.

log_fmt_console: '%(colorlevel)s %(colormsg)s'
log_fmt_console: '[%(levelname)-8s] %(message)s'

log_fmt_logfile¶

Default: %(asctime)s,%(msecs)03d [%(name)-17s][%(levelname)-8s] %(message)s

The format of the log file logging messages. See also log_fmt_logfile.

log_fmt_logfile: '%(asctime)s,%(msecs)03d [%(name)-17s][%(levelname)-8s] %(message)s'

log_granular_levels¶

Default: {}

This can be used to control logging levels more specifically. See also log_granular_levels.

log_rotate_max_bytes¶

Default: 0

The maximum number of bytes a single log file may contain before it is rotated. A value of 0 disables this feature. Currently only supported on Windows. On other platforms, use an external tool such as 'logrotate' to manage log files. log_rotate_max_bytes

log_rotate_backup_count¶

Default: 0

The number of backup files to keep when rotating log files. Only used if log_rotate_max_bytes is greater than 0. Currently only supported on Windows. On other platforms, use an external tool such as 'logrotate' to manage log files. log_rotate_backup_count

zmq_monitor¶

Default: False

To diagnose issues with minions disconnecting or missing returns, ZeroMQ supports the use of monitor sockets to log connection events. This feature requires ZeroMQ 4.0 or higher.

To enable ZeroMQ monitor sockets, set 'zmq_monitor' to 'True' and log at a debug level or higher.

A sample log event is as follows:

[DEBUG   ] ZeroMQ event: {'endpoint': 'tcp://127.0.0.1:4505', 'event': 512,
'value': 27, 'description': 'EVENT_DISCONNECTED'}

All events logged will include the string ZeroMQ event. A connection event should be logged as the minion starts up and initially connects to the master. If not, check for debug log level and that the necessary version of ZeroMQ is installed.

tcp_authentication_retries¶

Default: 5

The number of times to retry authenticating with the salt master when it comes back online.

Zeromq does a lot to make sure when connections come back online that they reauthenticate. The tcp transport should try to connect with a new connection if the old one times out on reauthenticating.

-1 for infinite tries.

tcp_reconnect_backoff¶

Default: 1

The time in seconds to wait before attempting another connection with salt master when the previous connection fails while on TCP transport.

failhard¶

Default: False

Set the global failhard flag. This informs all states to stop running states at the moment a single state fails

failhard: False

default_include¶

Default: minion.d/*.conf

The minion can include configuration from other files. Per default the minion will automatically include all config files from minion.d/*.conf where minion.d is relative to the directory of the minion configuration file.

include¶

Default: not defined

The minion can include configuration from other files. To enable this, pass a list of paths to this option. The paths can be either relative or absolute; if relative, they are considered to be relative to the directory the main minion configuration file lives in. Paths can make use of shell-style globbing. If no files are matched by a path passed to this option then the minion will log a warning message.

# Include files from a minion.d directory in the same
# directory as the minion config file
include: minion.d/*.conf

# Include a single extra file into the configuration
include: /etc/roles/webserver

# Include several files and the minion.d directory
include:
  - extra_config
  - minion.d/*
  - /etc/roles/webserver

tcp_keepalive¶

Default: True

The tcp keepalive interval to set on TCP ports. This setting can be used to tune Salt connectivity issues in messy network environments with misbehaving firewalls.

tcp_keepalive: True

tcp_keepalive_cnt¶

Default: -1

Sets the ZeroMQ TCP keepalive count. May be used to tune issues with minion disconnects.

tcp_keepalive_cnt: -1

tcp_keepalive_idle¶

Default: 300

Sets ZeroMQ TCP keepalive idle. May be used to tune issues with minion disconnects.

tcp_keepalive_idle: 300

tcp_keepalive_intvl¶

Default: -1

Sets ZeroMQ TCP keepalive interval. May be used to tune issues with minion disconnects.

tcp_keepalive_intvl': -1

update_url¶

Default: False (Update feature is disabled)

The url to use when looking for application updates. Esky depends on directory listings to search for new versions. A webserver running on your Master is a good starting point for most setups.

update_url: 'http://salt.example.com/minion-updates'

update_restart_services¶

Default: [] (service restarting on update is disabled)

A list of services to restart when the minion software is updated. This would typically just be a list containing the minion's service name, but you may have other services that need to go with it.

update_restart_services: ['salt-minion']

winrepo_cache_expire_min¶

Default: 1800

If set to a nonzero integer, then passing refresh=True to functions in the windows pkg module will not refresh the windows repo metadata if the age of the metadata is less than this value. The exception to this is pkg.refresh_db, which will always refresh the metadata, regardless of age.

winrepo_cache_expire_min: 1800

winrepo_cache_expire_max¶

Default: 21600

If the windows repo metadata is older than this value, and the metadata is needed by a function in the windows pkg module, the metadata will be refreshed.

winrepo_cache_expire_max: 86400

winrepo_source_dir¶

Default: salt://win/repo-ng/

The source location for the winrepo sls files.

winrepo_source_dir: salt://win/repo-ng/

winrepo_dir¶

Default: C:\salt\srv\salt\win\repo

Location on the minion file_roots where winrepo files are kept. This is also where the winrepo_remotes are cloned to by winrepo.update_git_repos.

winrepo_dir: 'D:\winrepo'

winrepo_dir_ng¶

Default: C:\salt\srv\salt\win\repo-ng

Location on the minion file_roots where winrepo files are kept for 2018.8.0 and later minions. This is also where the winrepo_remotes are cloned to by winrepo.update_git_repos.

winrepo_dir_ng: /srv/salt/win/repo-ng

winrepo_cachefile¶

Default: winrepo.p

The name of the winrepo cache file. The file will be created at root of the directory specified by winrepo_dir_ng.

winrepo_cachefile: winrepo.p

winrepo_remotes¶

Default: ['https://github.com/saltstack/salt-winrepo.git']

List of git repositories to checkout and include in the winrepo

winrepo_remotes:
  - https://github.com/saltstack/salt-winrepo.git

To specify a specific revision of the repository, prepend a commit ID to the URL of the repository:

winrepo_remotes:
  - '<commit_id> https://github.com/saltstack/salt-winrepo.git'

Replace <commit_id> with the SHA1 hash of a commit ID. Specifying a commit ID is useful in that it allows one to revert back to a previous version in the event that an error is introduced in the latest revision of the repo.

winrepo_remotes_ng¶

Default: ['https://github.com/saltstack/salt-winrepo-ng.git']

List of git repositories to checkout and include in the winrepo for 2015.8.0 and later minions.

winrepo_remotes_ng:
  - https://github.com/saltstack/salt-winrepo-ng.git

To specify a specific revision of the repository, prepend a commit ID to the URL of the repository:

winrepo_remotes_ng:
  - '<commit_id> https://github.com/saltstack/salt-winrepo-ng.git'

Replace <commit_id> with the SHA1 hash of a commit ID. Specifying a commit ID is useful in that it allows one to revert back to a previous version in the event that an error is introduced in the latest revision of the repo.