Return data to an etcd server or cluster
python-etcd or etcd3-py
In order to return to an etcd server, a profile should be created in the master configuration file:
my_etcd_config:
etcd.host: 127.0.0.1
etcd.port: 2379
It is technically possible to configure etcd without using a profile, but this is not considered to be a best practice, especially when multiple etcd servers or clusters are available.
etcd.host: 127.0.0.1
etcd.port: 2379
In order to choose whether to use etcd API v2 or v3, you can put the following configuration option in the same place as your etcd configuration. This option defaults to true, meaning you will use v2 unless you specify otherwise.
etcd.require_v2: True
When using API v3, there are some specific options available to be configured within your etcd profile. They are defaulted to the following...
etcd.encode_keys: False
etcd.encode_values: True
etcd.raw_keys: False
etcd.raw_values: False
etcd.unicode_errors: "surrogateescape"
etcd.encode_keys
indicates whether you want to pre-encode keys using msgpack before
adding them to etcd.
Note
If you set etcd.encode_keys
to True
, all recursive functionality will no longer work.
This includes tree
and ls
and all other methods if you set recurse
/recursive
to True
.
This is due to the fact that when encoding with msgpack, keys like /salt
and /salt/stack
will have
differing byte prefixes, and etcd v3 searches recursively using prefixes.
etcd.encode_values
indicates whether you want to pre-encode values using msgpack before
adding them to etcd. This defaults to True
to avoid data loss on non-string values wherever possible.
etcd.raw_keys
determines whether you want the raw key or a string returned.
etcd.raw_values
determines whether you want the raw value or a string returned.
etcd.unicode_errors
determines what you policy to follow when there are encoding/decoding errors.
Additionally, two more options must be specified in the top-level configuration in order to use the etcd returner:
etcd.returner: my_etcd_config
etcd.returner_root: /salt/return
The etcd.returner
option specifies which configuration profile to use. The
etcd.returner_root
option specifies the path inside etcd to use as the root
of the returner system.
Once the etcd options are configured, the returner may be used:
CLI Example:
salt '*' test.ping --return etcd
A username and password can be set:
etcd.username: larry # Optional; requires etcd.password to be set
etcd.password: 123pass # Optional; requires etcd.username to be set
You can also set a TTL (time to live) value for the returner:
etcd.ttl: 5
Authentication with username and password, and ttl, currently requires the
master
branch of python-etcd
.
You may also specify different roles for read and write operations. First, create the profiles as specified above. Then add:
etcd.returner_read_profile: my_etcd_read
etcd.returner_write_profile: my_etcd_write
Included for API consistency
Return a dict of the last function called for all minions
Return the information returned when the specified job id was executed
Return a list of all job ids
Return the load data that marks a specified jid
Return a list of minions
Do any work necessary to prepare a JID, including sending a custom id
Return data to an etcd server or cluster
Save the load to the specified jid
Included for API consistency