ceph-ansible/infrastructure-playbooks/purge-cluster.yml

---
# This playbook purges Ceph
# It removes: packages, configuration files and ALL THE DATA
#
# Use it like this:
# ansible-playbook purge-cluster.yml
#     Prompts for confirmation to purge, defaults to no and
#     doesn't purge the cluster. yes purges the cluster.
#
# ansible-playbook -e ireallymeanit=yes|no purge-cluster.yml
#     Overrides the prompt using -e option. Can be used in
#     automation scripts to avoid interactive prompt.

- name: confirm whether user really meant to purge the cluster
  hosts: localhost
  gather_facts: false
  vars_prompt:
    - name: ireallymeanit
      prompt: Are you sure you want to purge the cluster?
      default: 'no'
      private: no
  tasks:
    - name: exit playbook, if user did not mean to purge cluster
      fail:
        msg: >
          "Exiting purge-cluster playbook, cluster was NOT purged.
           To purge the cluster, either say 'yes' on the prompt or
           or use `-e ireallymeanit=yes` on the command line when
           invoking the playbook"
      when: ireallymeanit != 'yes'


- name: gather facts on all hosts
  hosts:
    - mons
    - osds
    - mdss
    - rgws
    - rbdmirrors
    - nfss
    - clients
    - mgrs
    - grafana-server
  become: true
  tasks:
    - debug:
        msg: "gather facts on all Ceph hosts for following reference"


- name: check there's no ceph kernel threads present
  hosts: clients
  become: true
  gather_facts: false
  any_errors_fatal: true
  tasks:
    - import_role:
        name: ceph-defaults

    - block:
        - name: get nfs nodes ansible facts
          setup:
            gather_subset:
              - 'all'
              - '!facter'
              - '!ohai'
          delegate_to: "{{ item }}"
          delegate_facts: True
          with_items: "{{ groups[nfs_group_name] }}"
          run_once: true

        - name: get all nfs-ganesha mount points
          command: grep "{{ hostvars[item]['ansible_facts']['all_ipv4_addresses'] | ips_in_ranges(public_network.split(',')) | first }}" /proc/mounts
          register: nfs_ganesha_mount_points
          failed_when: false
          with_items: "{{ groups[nfs_group_name] }}"

        - name: ensure nfs-ganesha mountpoint(s) are unmounted
          mount:
            path: "{{ item.split(' ')[1] }}"
            state: unmounted
          with_items:
            - "{{ nfs_ganesha_mount_points.results | map(attribute='stdout_lines') | list }}"
          when: item | length > 0
      when: groups[nfs_group_name] | default([]) | length > 0

    - name: ensure cephfs mountpoint(s) are unmounted
      command: umount -a -t ceph
      changed_when: false

    - name: find mapped rbd ids
      find:
        paths: /sys/bus/rbd/devices
        file_type: any
      register: rbd_mapped_ids

    - name: use sysfs to unmap rbd devices
      shell: "echo {{ item.path | basename }} > /sys/bus/rbd/remove_single_major"
      changed_when: false
      with_items: "{{ rbd_mapped_ids.files }}"

    - name: unload ceph kernel modules
      modprobe:
        name: "{{ item }}"
        state: absent
      with_items:
        - rbd
        - ceph
        - libceph


- name: purge ceph nfs cluster
  hosts: nfss
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - name: stop ceph nfss with systemd
      service:
        name: nfs-ganesha
        state: stopped
      failed_when: false
      when: ansible_facts['service_mgr'] == 'systemd'


- name: purge node-exporter
  hosts:
    - mons
    - osds
    - mdss
    - rgws
    - rbdmirrors
    - nfss
    - clients
    - mgrs
    - grafana-server
    - iscsigws
  become: true
  tasks:
    - import_role:
        name: ceph-defaults

    - block:
        - import_role:
            name: ceph-facts
            tasks_from: container_binary

        - name: disable node_exporter service
          service:
            name: node_exporter
            state: stopped
            enabled: no
          failed_when: false

        - name: remove node_exporter service file
          file:
            name: /etc/systemd/system/node_exporter.service
            state: absent

        - name: remove node-exporter image
          command: "{{ container_binary }} rmi {{ node_exporter_container_image }}"
          failed_when: false
          tags:
            - remove_img
      when: dashboard_enabled | bool


- name: purge ceph grafana-server
  hosts: grafana-server
  become: true
  vars:
    grafana_services:
      - grafana-server
      - prometheus
      - alertmanager
  tasks:
    - import_role:
        name: ceph-defaults

    - block:
        - import_role:
            name: ceph-facts
            tasks_from: container_binary

        - name: stop services
          service:
            name: "{{ item }}"
            state: stopped
            enabled: no
          with_items: "{{ grafana_services }}"
          failed_when: false

        - name: remove service files
          file:
            name: "/etc/systemd/system/{{ item }}.service"
            state: absent
          with_items: "{{ grafana_services }}"
          failed_when: false

        - name: remove ceph dashboard container images
          command: "{{ container_binary }} rmi {{ item }}"
          with_items:
            - "{{ prometheus_container_image }}"
            - "{{ grafana_container_image }}"
            - "{{ alertmanager_container_image }}"
          failed_when: false
          tags:
            - remove_img

        - name: remove data
          file:
            name: "{{ item }}"
            state: absent
          with_items:
            - /etc/grafana/dashboards
            - /etc/grafana/grafana.ini
            - /etc/grafana/provisioning
            - /var/lib/grafana
            - /etc/alertmanager
            - /var/lib/alertmanager
            - /var/lib/prometheus
            - /etc/prometheus
          failed_when: false
      when: dashboard_enabled | bool


- name: purge ceph mds cluster
  hosts: mdss
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - name: stop ceph mdss with systemd
      service:
        name: ceph-mds@{{ ansible_facts['hostname'] }}
        state: stopped
        enabled: no
      failed_when: false


- name: purge ceph mgr cluster
  hosts: mgrs
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - name: stop ceph mgrs with systemd
      service:
        name: ceph-mgr@{{ ansible_facts['hostname'] }}
        state: stopped
        enabled: no
      failed_when: false
      when: ansible_facts['service_mgr'] == 'systemd'


- name: purge rgwloadbalancer cluster
  hosts: rgwloadbalancers
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - name: stop rgwloadbalancer services
      service:
        name: ['keepalived', 'haproxy']
        state: stopped
        enabled: no
      failed_when: false


- name: purge ceph rgw cluster
  hosts: rgws
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - import_role:
        name: ceph-defaults

    - import_role:
        name: ceph-facts
        tasks_from: set_radosgw_address

    - name: stop ceph rgws with systemd
      service:
        name: "ceph-radosgw@rgw.{{ ansible_facts['hostname'] }}.{{ item.instance_name }}"
        state: stopped
        enabled: no
      failed_when: false
      with_items: "{{ rgw_instances }}"


- name: purge ceph rbd-mirror cluster
  hosts: rbdmirrors
  gather_facts: false # Already gathered previously
  become: true
  tasks:
    - name: stop ceph rbd mirror with systemd
      service:
        name: "ceph-rbd-mirror@rbd-mirror.{{ ansible_facts['hostname'] }}"
        state: stopped
      failed_when: false


- name: purge ceph osd cluster
  vars:
    reboot_osd_node: False
  hosts: osds
  gather_facts: false # Already gathered previously
  become: true
  handlers:
    - name: restart machine
      shell: sleep 2 && shutdown -r now "Ansible updates triggered"
      async: 1
      poll: 0
      ignore_errors: true

    - name: wait for server to boot
      become: false
      wait_for:
        port: 22
        host: "{{ hostvars[inventory_hostname]['ansible_facts']['default_ipv4']['address'] }}"
        state: started
        delay: 10
        timeout: 500
        delegate_to: localhost

    - name: remove data
      shell: rm -rf /var/lib/ceph/*  # noqa 302
  tasks:
    - import_role:
        name: ceph-defaults

    - name: default lvm_volumes if not defined
      set_fact:
        lvm_volumes: []
      when: lvm_volumes is not defined

    - name: get osd numbers
      shell: if [ -d /var/lib/ceph/osd ] ; then ls /var/lib/ceph/osd | sed 's/.*-//' ; fi  # noqa 306
      register: osd_ids
      changed_when: false

    - name: stop ceph-osd with systemd
      service:
        name: ceph-osd@{{ item }}
        state: stopped
        enabled: no
      with_items: "{{ osd_ids.stdout_lines }}"
      when: ansible_facts['service_mgr'] == 'systemd'

    - name: remove ceph udev rules
      file:
        path: "{{ item }}"
        state: absent
      with_items:
        - /usr/lib/udev/rules.d/95-ceph-osd.rules
        - /usr/lib/udev/rules.d/60-ceph-by-parttypeuuid.rules

    # NOTE(leseb): hope someone will find a more elegant way one day...
    - name: see if encrypted partitions are present
      shell: blkid -t TYPE=crypto_LUKS -s PARTLABEL -s PARTUUID | grep "ceph.*." | grep -o PARTUUID.* | cut -d '"' -f 2  # noqa 306
      register: encrypted_ceph_partuuid
      changed_when: false

    - name: get osd data and lockbox mount points
      shell: (grep /var/lib/ceph/osd /proc/mounts || echo -n) | awk '{ print $2 }'  # noqa 306
      register: mounted_osd
      changed_when: false

    - name: drop all cache
      shell: "sync && sleep 1 && echo 3 > /proc/sys/vm/drop_caches"
      changed_when: false

    - name: umount osd data partition
      mount:
        path: "{{ item }}"
        state: unmounted
      with_items: "{{ mounted_osd.stdout_lines }}"

    - name: remove osd mountpoint tree
      file:
        path: /var/lib/ceph/osd/
        state: absent
      register: remove_osd_mountpoints
      ignore_errors: true

    - name: is reboot needed
      command: echo requesting reboot
      delegate_to: localhost
      become: false
      notify:
        - restart machine
        - wait for server to boot
        - remove data
      when:
        - reboot_osd_node | bool
        - remove_osd_mountpoints.failed is defined

    - name: wipe table on dm-crypt devices
      command: dmsetup wipe_table --force "{{ item }}"
      with_items: "{{ encrypted_ceph_partuuid.stdout_lines }}"
      when: encrypted_ceph_partuuid.stdout_lines | length > 0

    - name: delete dm-crypt devices if any
      command: dmsetup remove --retry --force {{ item }}
      with_items: "{{ encrypted_ceph_partuuid.stdout_lines }}"
      when: encrypted_ceph_partuuid.stdout_lines | length > 0

    - name: get payload_offset
      shell: cryptsetup luksDump /dev/disk/by-partuuid/{{ item }} | awk '/Payload offset:/ { print $3 }'  # noqa 306
      register: payload_offset
      with_items: "{{ encrypted_ceph_partuuid.stdout_lines }}"
      when: encrypted_ceph_partuuid.stdout_lines | length > 0

    - name: get physical sector size
      command: blockdev --getpbsz /dev/disk/by-partuuid/{{ item }}
      changed_when: false
      with_items: "{{ encrypted_ceph_partuuid.stdout_lines }}"
      when: encrypted_ceph_partuuid.stdout_lines | length > 0
      register: phys_sector_size

    - name: wipe dmcrypt device
      command: dd if=/dev/zero of=/dev/disk/by-partuuid/{{ item.0 }} bs={{ item.1.stdout }} count={{ item.2.stdout }} oflag=direct
      changed_when: false
      with_together:
        - "{{ encrypted_ceph_partuuid.stdout_lines }}"
        - "{{ payload_offset.results }}"
        - "{{ phys_sector_size.results }}"

    - name: get ceph data partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph data"
      changed_when: false
      failed_when: false
      register: ceph_data_partition_to_erase_path

    - name: get ceph lockbox partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph lockbox"
      changed_when: false
      failed_when: false
      register: ceph_lockbox_partition_to_erase_path

    - name: see if ceph-volume is installed # noqa : 305
      shell: command -v ceph-volume
      changed_when: false
      failed_when: false
      register: ceph_volume_present

    - name: zap and destroy osds created by ceph-volume with lvm_volumes
      ceph_volume:
        data: "{{ item.data }}"
        data_vg: "{{ item.data_vg|default(omit) }}"
        journal: "{{ item.journal|default(omit) }}"
        journal_vg: "{{ item.journal_vg|default(omit) }}"
        db: "{{ item.db|default(omit) }}"
        db_vg: "{{ item.db_vg|default(omit) }}"
        wal: "{{ item.wal|default(omit) }}"
        wal_vg: "{{ item.wal_vg|default(omit) }}"
        action: "zap"
      environment:
        CEPH_VOLUME_DEBUG: "{{ ceph_volume_debug }}"
      with_items: "{{ lvm_volumes | default([]) }}"
      when: ceph_volume_present.rc == 0

    - name: zap and destroy osds created by ceph-volume with devices
      ceph_volume:
        data: "{{ item }}"
        action: "zap"
      environment:
        CEPH_VOLUME_DEBUG: "{{ ceph_volume_debug }}"
      with_items:
        - "{{ devices | default([]) }}"
        - "{{ dedicated_devices | default([]) }}"
        - "{{ bluestore_wal_devices | default([]) }}"
      when: ceph_volume_present.rc == 0

    - name: get ceph block partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph block"
      changed_when: false
      failed_when: false
      register: ceph_block_partition_to_erase_path

    - name: get ceph journal partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph journal"
      changed_when: false
      failed_when: false
      register: ceph_journal_partition_to_erase_path

    - name: get ceph db partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph block.db"
      changed_when: false
      failed_when: false
      register: ceph_db_partition_to_erase_path

    - name: get ceph wal partitions
      shell: |
        blkid -o device -t PARTLABEL="ceph block.wal"
      changed_when: false
      failed_when: false
      register: ceph_wal_partition_to_erase_path

    - name: set_fact combined_devices_list
      set_fact:
        combined_devices_list: "{{ ceph_data_partition_to_erase_path.stdout_lines +
                                   ceph_lockbox_partition_to_erase_path.stdout_lines +
                                   ceph_block_partition_to_erase_path.stdout_lines +
                                   ceph_journal_partition_to_erase_path.stdout_lines +
                                   ceph_db_partition_to_erase_path.stdout_lines +
                                   ceph_wal_partition_to_erase_path.stdout_lines }}"

    - name: resolve parent device
      command: lsblk --nodeps -no pkname "{{ item }}"
      register: tmp_resolved_parent_device
      changed_when: false
      with_items: "{{ combined_devices_list }}"

    - name: set_fact resolved_parent_device
      set_fact:
        resolved_parent_device: "{{ tmp_resolved_parent_device.results | map(attribute='stdout') | list | unique }}"

    - name: wipe partitions
      shell: |
        wipefs --all "{{ item }}"
        dd if=/dev/zero of="{{ item }}" bs=1 count=4096
      changed_when: false
      with_items: "{{ combined_devices_list }}"

    - name: check parent device partition
      parted:
        device: "/dev/{{ item }}"
      loop: "{{ resolved_parent_device }}"
      register: parted_info

    - name: fail if there is a boot partition on the device
      fail:
        msg: "{{ item.item }} has a boot partition"
      loop: "{{ parted_info.results }}"
      when: "'boot' in (item.partitions | map(attribute='flags') | list | flatten)"

    - name: zap ceph journal/block db/block wal partitions  # noqa 306
      shell: |
        sgdisk -Z --clear --mbrtogpt -g -- /dev/"{{ item }}"
        dd if=/dev/zero of=/dev/"{{ item }}" bs=1M count=200
        parted -s /dev/"{{ item }}" mklabel gpt
        partprobe /dev/"{{ item }}"
        udevadm settle --timeout=600
      with_items: "{{ resolved_parent_device }}"
      changed_when: false


- name: purge ceph mon cluster
  hosts: mons
  gather_facts: false # already gathered previously
  become: true
  tasks:
    - name: stop ceph mons with systemd
      service:
        name: "ceph-{{ item }}@{{ ansible_facts['hostname'] }}"
        state: stopped
        enabled: no
      failed_when: false
      with_items:
        - mon
        - mgr

    - name: remove monitor store and bootstrap keys
      file:
        path: "{{ item }}"
        state: absent
      with_items:
        - /var/lib/ceph/mon
        - /var/lib/ceph/bootstrap-mds
        - /var/lib/ceph/bootstrap-osd
        - /var/lib/ceph/bootstrap-rgw
        - /var/lib/ceph/bootstrap-rbd
        - /var/lib/ceph/bootstrap-mgr
        - /var/lib/ceph/tmp


- name: purge ceph-crash daemons
  hosts:
    - mons
    - osds
    - mdss
    - rgws
    - rbdmirrors
    - mgrs
  gather_facts: false
  become: true
  tasks:
    - name: stop ceph-crash service
      service:
        name: ceph-crash.service
        state: stopped
        enabled: no
      failed_when: false

    - name: remove /var/lib/ceph/crash
      file:
        path: /var/lib/ceph/crash
        state: absent


- name: final cleanup - check any running ceph, purge ceph packages, purge config and remove data
  vars:
    # When set to true both groups of packages are purged.
    # This can cause problem with qemu-kvm
    purge_all_packages: true
    ceph_packages:
      - ceph
      - ceph-common
      - ceph-fs-common
      - ceph-fuse
      - ceph-mds
      - ceph-mgr
      - ceph-release
      - ceph-radosgw
      - calamari-server
      - ceph-grafana-dashboards
      - rbd-mirror
    ceph_remaining_packages:
      - libcephfs1
      - libcephfs2
      - librados2
      - libradosstriper1
      - librbd1
      - python-ceph-argparse
      - python-cephfs
      - python-rados
      - python-rbd

    extra_packages:
      - keepalived
      - haproxy
  hosts:
    - mons
    - osds
    - mdss
    - rgws
    - rbdmirrors
    - nfss
    - clients
    - mgrs
    - grafana-server
  gather_facts: false # Already gathered previously
  become: true
  handlers:
    - name: get osd data and lockbox mount points
      shell: "(grep /var/lib/ceph/osd /proc/mounts || echo -n) | awk '{ print $2 }'"
      register: mounted_osd
      changed_when: false
      listen: "remove data"

    - name: umount osd data partition
      mount:
        path: "{{ item }}"
        state: unmounted
      with_items: "{{ mounted_osd.stdout_lines }}"
      listen: "remove data"

    - name: remove data
      shell: rm -rf /var/lib/ceph/*  # noqa 302
      listen: "remove data"
  tasks:
    - name: purge ceph packages with yum
      yum:
        name: "{{ ceph_packages }}"
        state: absent
      when: ansible_facts['pkg_mgr'] == 'yum'

    - name: purge ceph packages with dnf
      dnf:
        name: "{{ ceph_packages }}"
        state: absent
      when: ansible_facts['pkg_mgr'] == 'dnf'

    - name: purge ceph packages with apt
      apt:
        name: "{{ ceph_packages }}"
        state: absent
        purge: true
      when: ansible_facts['pkg_mgr'] == 'apt'

    - name: purge remaining ceph packages with yum
      yum:
        name: "{{ ceph_remaining_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'yum'
        - purge_all_packages | bool

    - name: purge remaining ceph packages with dnf
      dnf:
        name: "{{ ceph_remaining_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'dnf'
        - purge_all_packages | bool

    - name: purge remaining ceph packages with apt
      apt:
        name: "{{ ceph_remaining_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'apt'
        - purge_all_packages | bool

    - name: purge extra packages with yum
      yum:
        name: "{{ extra_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'yum'
        - purge_all_packages | bool

    - name: purge extra packages with dnf
      dnf:
        name: "{{ extra_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'dnf'
        - purge_all_packages | bool

    - name: purge extra packages with apt
      apt:
        name: "{{ extra_packages }}"
        state: absent
      when:
        - ansible_facts['pkg_mgr'] == 'apt'
        - purge_all_packages | bool

    - name: remove config and any ceph socket left
      file:
        path: "{{ item }}"
        state: absent
      with_items:
        - /etc/ceph
        - /etc/keepalived
        - /etc/haproxy
        - /run/ceph

    - name: remove logs
      file:
       path: /var/log/ceph
       state: absent

    - name: request data removal
      command: echo requesting data removal  # noqa 301
      become: false
      delegate_to: localhost
      notify: remove data

    - name: purge dnf cache
      command: dnf clean all
      when: ansible_facts['pkg_mgr'] == 'dnf'

    - name: clean apt
      command: apt-get clean  # noqa 303
      when: ansible_facts['pkg_mgr'] == 'apt'

    - name: purge ceph repo file in /etc/yum.repos.d
      file:
        path: '/etc/yum.repos.d/{{ item }}.repo'
        state: absent
      with_items:
        - ceph-dev
        - ceph_stable
      when: ansible_facts['os_family'] == 'RedHat'

    - name: check for anything running ceph
      command: "ps -u ceph -U ceph"
      register: check_for_running_ceph
      changed_when: false
      failed_when: check_for_running_ceph.rc == 0

    - name: find ceph systemd unit files to remove
      find:
        paths: "/etc/systemd/system"
        pattern: "ceph*"
        recurse: true
        file_type: any
      register: systemd_files

    - name: remove ceph systemd unit files
      file:
        path: "{{ item.path }}"
        state: absent
      with_items: "{{ systemd_files.files }}"
      when: ansible_facts['service_mgr'] == 'systemd'


- name: purge fetch directory
  hosts: localhost
  gather_facts: false
  tasks:
    - name: set fetch_directory value if not set
      set_fact:
        fetch_directory: "fetch/"
      when: fetch_directory is not defined

    - name: purge fetch directory for localhost
      file:
        path: "{{ fetch_directory | default('fetch/') }}"
        state: absent