OCP 3.6 Ansible playbook to tune journald

gistfile1.txt

 name: journald optimizations to allow for increased logging rates
  hosts: all
  gather_facts: False
  tasks:
        - name: Stop and disable rsyslog
          systemd:
            name: "{{ item }}"
            state: stopped
            enabled: no
          with_items:
            - rsyslog
        - name: Enable journald persistence
          ini_file:
            dest: "/etc/systemd/journald.conf"
            section: Journal
            option: Storage
            value: "Persistent"
            no_extra_spaces: yes
        - name: remove journald rate limit burst limit
          ini_file:
            dest: "/etc/systemd/journald.conf"
            section: Journal
            option: RateLimitBurst
            value: "0"
            no_extra_spaces: yes
        - name: remove journald rate limit interval
          ini_file:
            dest: "/etc/systemd/journald.conf"
            section: Journal
            option: RateLimitIntervalSec
            value: "0"
            no_extra_spaces: yes
        - name: Create /var/log/journal
          file:
            path: /var/log/journal
            state: directory
            owner: root
            group: root
            mode: 0755
        - name: Restart journald
          systemd:
            name: "{{ item }}"
            state: restarted
          with_items:
            - systemd-journald
        - name: Clean up yum cache
          command: yum clean all
        - name: Remove all yum cache directories
          command: rm -rf /var/cache/yum/*

To add to that, persistent will create /var/log/journal automatically. auto would require manual creation of that directory for persistency. Found this in man journald.conf under Storage=.