Pre Checks Role

---

- import_tasks: pre_checks.yml
 tags:
   - pre_checks
   - create_backup
   - restore_backup
   - cleanup

...

---

# Need to enable IPv6 at the grub level first
- name: Enable IPV6 on Ubuntu systems
  sysctl:
    name: net.ipv6.conf.lo.disable_ipv6
    value: '0'
    sysctl_set: yes
    state: absent
  when:
    - ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'
  delegate_to: "{{ item }}"
  loop:
    - "{{ chefsrv_bkup | lower }}"
    - "{{ chefsrv_main | lower }}"

# Verify chef is running on both servers.
- name: "Verify backup command exists on all servers"
  shell:
    cmd: /opt/opscode/bin/knife ec backup -h
  register: knife_ec_backup
  failed_when: knife_ec_backup.rc > 1
  delegate_to: "{{ item }}"
  loop:
    - "{{ chefsrv_bkup | lower }}"
    - "{{ chefsrv_main | lower }}"

# Verify permissions of log directories.
- name: "Verify /var/log/opscode/postgresql has correct permissions on all servers"
  file:
    path: /var/log/opscode/postgresql
    state: directory
    mode: '0750'
    owner: opscode
    group: opscode
  delegate_to: "{{ item }}"
  loop:
    - "{{ chefsrv_bkup | lower }}"
    - "{{ chefsrv_main | lower }}"

# Check if the backup command had been run.
- name: "See if the backup command has run on {{ chefsrv_main | lower }}"
  stat:
    path: /var/opt/chef-backup/backup_complete.lock
  register: orig_backup_check
  delegate_to: "{{ chefsrv_main | lower }}"

# Check if it exists on the old server.
- name: "See if the archive is on the {{ chefsrv_main | lower }}"
  block:
    - name: "See if the archive is on the {{ chefsrv_main | lower }}"
      find:
        paths: /var/opt/chef-backup/
        patterns: 'chef-backup-*.tgz'
        age: -12h
      register: found_files_on_old_lt12

    - name: "Get latest file on {{ chefsrv_main | lower }}"
      set_fact:
        latest_file_old: "{{ (found_files_on_old_lt12.files|sort(attribute='mtime')|last).path | default('/chef-backup/noarchive.gz') }}"

    - name: "Stat latest file on {{ chefsrv_main | lower }}"
      stat:
        path: "{{ latest_file_old }}"
      register: chef_backup_ark

    - name: "See if the pem archive is on the {{ chefsrv_main | lower }}"
      find:
        paths: /var/opt/chef-backup/
        patterns: 'chef_admin_pem_*.tgz'
        age: -12h
      register: found_pem_ark_on_old_lt12

    - name: "Get latest pem ark on {{ chefsrv_main | lower }}"
      set_fact:
        latest_pem_old: "{{ (found_pem_ark_on_old_lt12.files|sort(attribute='mtime')|last).path | default('/chef-backup/noarchive.gz') }}"

    - name: "Stat latest pem ark on {{ chefsrv_main | lower }}"
      stat:
        path: "{{ latest_pem_old }}"
      register: chef_admin_pem_ark
  delegate_to: "{{ chefsrv_main | lower }}"

# Check if the archive exists on the new server.
- name: "See if the archive is on {{ chefsrv_bkup | lower}}"
  find:
    paths: /var/opt/chef-backup/
    patterns: 'chef-backup-*.tgz'
  register: found_files_on_new

- name: "Get latest file on {{ chefsrv_bkup | lower}}"
  set_fact:
    latest_file_new: "{{ (found_files_on_new.files|sort(attribute='mtime')|last).path | default('/chef-backup/noarchive.gz') }}"

- name: Stat latest file on {{ chefsrv_bkup | lower}}
  stat:
    path: "{{ latest_file_new }}"
  register: new_svr_ark_pre

- name: "See if the pem archive is on {{ chefsrv_bkup | lower}}"
  find:
    paths: /var/opt/chef-backup/
    patterns: 'chef_admin_pem_*.tgz'
  register: found_pem_files_on_new

- name: "Get latest pem ark on {{ chefsrv_bkup | lower}}"
  set_fact:
    latest_pem_new: "{{ (found_pem_files_on_new.files|sort(attribute='mtime')|last).path | default('/chef-backup/noarchive.gz') }}"

- name: "Stat latest pem ark on {{ chefsrv_bkup | lower}}"
  stat:
    path: "{{ latest_pem_new }}"
  register: new_pem_ark_pre

# Setting facts for future playbook use.
- name: Setting pre-check facts.
  set_fact:
    chef_backup_ark_filename: "{{ chef_backup_ark.stat.path | default('noarchive_old') | basename }}"
    chef_admin_pem_ark_filename: "{{ chef_admin_pem_ark.stat.path | default('noarchive_old') | basename }}"
    new_svr_ark_filename: "{{ new_svr_ark_pre.stat.path | default('noarchive_new') | basename }}"
    new_pem_ark_filename: "{{ new_pem_ark_pre.stat.path | default('noarchive_new') | basename }}"

...