第12章 Configuring the systemd journal by using RHEL system roles

Procedure

1. Create a playbook file, for example, ~/playbook.yml, with the following content:

   ---
   - name: Configure journald
     hosts: managed-node-01.example.com
     tasks:
       - name: Configure persistent logging
         ansible.builtin.include_role:
           name: redhat.rhel_system_roles.journald
         vars:
           journald_persistent: true
           journald_max_disk_size: <size>
           journald_per_user: true
           journald_sync_interval: <interval>

   The settings specified in the example playbook include the following:

   journald_persistent: true

   Enables persistent logging.

   journald_max_disk_size: <size>

   Specifies the maximum size of disk space for journal files in MB, for example, 2048.

   journald_per_user: true

   Configures journald to keep log data separate for each user.

   journald_sync_interval: <interval>

   Sets the synchronization interval in minutes, for example, 1.

   For details about all variables used in the playbook, see the /usr/share/ansible/roles/rhel-system-roles.journald/README.md file on the control node.

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml