SaltStack: Call a single state of a sls file

saltstack

I fail to call a single state of an sls file.

Whole sls file works

This works:

salt-ssh w123 state.sls monitoring

This works:

salt-ssh w123 state.show_sls monitoring

One item of above output:

monitoring_packages:
    ----------
    __env__:
        base
    __sls__:
        monitoring.packages
    pkg:
        |_
          ----------
          pkgs:
              - python-psutil
        - installed
        |_
          ----------
          order:
              10000

What I tried

Now I want to call only monitoring_packages, not the whole sls file:

Fails:

salt:/srv # salt-ssh w123 state.sls_id monitoring_packages  monitoring
w123:
    Data failed to compile:
----------
    No matching sls found for 'monitoring' in env 'base'

Fails:

salt:/srv # salt-ssh w123 state.single monitoring.monitoring_packages
w123:
    TypeError encountered executing state.single: single() takes at least 2 arguments (1 given)

Question

How to call my single state monitoring_packages?

Version

salt:/srv # salt-ssh --version
salt-ssh 2015.8.3 (Beryllium)

Best Answer

I came across this post while also trying to figure out how to do this with regular salt calls (ie. not salt-ssh).

If you have the following SLS file (foo.sls):

bar:
   file.managed:
       - source: salt://some/file

You can run the following command to only execute that entry in the state file:

salt '*' state.sls_id bar foo

And again, I didn't know this either. I found the answer in a comment in a Google group discussion which pointed to a commit here.

Related Solutions

SaltStack: How one can execute a state only once

You can set a grain on the minion that indicates if the MySQL-State has run before. Just add this to your State:

mysql_master_status:
  mystate.query:
    - query: SHOW MASTER STATUS
  grains.present:
    - name: mysql
    - value: master

Then you can wrap things in your State you only want to run once between an if Statement:

{% if salt['grains.get']('mysql') != 'master' %}
...
{% endif %}

The advantage of this method is that you can now also keep track of your Minions who are MySQL-Masters. The downside is that you have to keep an eye on your grains so that the information won't get lost.

Adding Single Line to File with SaltStack

You are probably looking for file.append.

File.append searches the whole file and if it is unable to find your text, it will append it to the end of the file. I am assuming that you don't know of any common text structures in you /etc/sudoers file so you won't be able to use something like file.sed to replace some text.

Sample Code:

/etc/sudoers:
  file.append:
    - text: 
      - "# Administrators LDAP Group"
      - "%Administrators   ALL=(ALL)       ALL"

NOTE: You should probably test the sample code before you use it.