Something like this should work?
---
- hosts: my_hosts
become: true
become_method: sudo
gather_facts: false
tasks:
- name: Determine if /var/log/messages is zero-length
ansible.builtin.find:
paths: /var/log
patterns: messages
register: messages_files
- name: Check if /var/log/messages is zero length
ansible.builtin.stat:
path: "{{ item.path }}"
register: file_details
with_items: "{{ messages_files.files }}"
when: messages_files.matched > 0
- name: Restart rsyslog service if /var/log/messages is zero length
ansible.builtin.systemd:
name: rsyslog
state: restarted
when: item.stat.exists and item.stat.size == 0
with_items: "{{ file_details.results }}"
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To: Ansible Project <ansible-project@googlegroups.com>
Subject: [ansible-project] Getting hostnames from a fact
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I have a playbook I'm developing where I'm trying to find any server that has a
0 length /var/log/messages files. When I find those, I want to restart the
rsyslog service on those. So right now I'm setting this fact as follows:
---
- hosts: my_hosts
become: true
become_method: sudo
gather_facts: false
tasks:
- name: Determine if /var/log/messages is zero-length
ansible.builtin.find:
paths: /var/log
patterns: messages
register: messages_files
- name: Set fact for all servers that have zero-length /var/log/messages
ansible.builtin.set_fact:
zero: "{{ messages_files.files | selectattr('size', '==', 0) }}"
- name: Print results
ansible.builtin.debug:
msg: "{{ zero }}"
When the debug print happens, I get all servers printing out either the file
attributes, or an empty string:
ok: [server1] => {
"msg": [
{
"atime": 1713683723.242925,
"ctime": 1713683723.242925,
"dev": 64777,
"gid": 10,
"gr_name": "wheel",
"inode": 8212,
"isblk": false,
"ischr": false,
"isdir": false,
"isfifo": false,
"isgid": false,
"islnk": false,
"isreg": true,
"issock": false,
"isuid": false,
"mode": "0640",
"mtime": 1713683723.242925,
"nlink": 1,
"path": "/var/log/messages",
"pw_name": "root",
"rgrp": true,
"roth": false,
"rusr": true,
"size": 0,
"uid": 0,
"wgrp": false,
"woth": false,
"wusr": true,
"xgrp": false,
"xoth": false,
"xusr": false
}
]
}
ok: [server2] => {
"msg": []
}
So, 2 questions:
1) How can I NOT print what server2 is printing/showing?
2) Once I fix #1, how can I get just the hostnames of those servers where the
size of the file is 0, then start another play to restart rsyslog on only those?
Thanks,
Harry
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