mirror of https://github.com/ceph/ceph-ansible.git
134 lines
4.7 KiB
YAML
134 lines
4.7 KiB
YAML
---
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# This playbook shrinks Ceph OSDs that have been created with ceph-volume.
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# It can remove any number of OSD(s) from the cluster and ALL THEIR DATA
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#
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# Use it like this:
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# ansible-playbook shrink-osd.yml -e osd_to_kill=0,2,6
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# Prompts for confirmation to shrink, defaults to no and
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# doesn't shrink the cluster. yes shrinks the cluster.
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#
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# ansible-playbook -e ireallymeanit=yes|no shrink-osd.yml
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# Overrides the prompt using -e option. Can be used in
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# automation scripts to avoid interactive prompt.
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- name: gather facts and check the init system
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hosts:
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- "{{ mon_group_name|default('mons') }}"
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- "{{ osd_group_name|default('osds') }}"
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become: True
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tasks:
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- debug: msg="gather facts on all Ceph hosts for following reference"
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- name: confirm whether user really meant to remove osd(s) from the cluster
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hosts: localhost
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become: true
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vars_prompt:
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- name: ireallymeanit
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prompt: Are you sure you want to shrink the cluster?
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default: 'no'
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private: no
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vars:
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mon_group_name: mons
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osd_group_name: osds
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pre_tasks:
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- name: exit playbook, if user did not mean to shrink cluster
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fail:
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msg: "Exiting shrink-osd playbook, no osd(s) was/were removed..
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To shrink the cluster, either say 'yes' on the prompt or
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or use `-e ireallymeanit=yes` on the command line when
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invoking the playbook"
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when: ireallymeanit != 'yes'
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- name: exit playbook, if no osd(s) was/were given
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fail:
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msg: "osd_to_kill must be declared
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Exiting shrink-osd playbook, no OSD(s) was/were removed.
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On the command line when invoking the playbook, you can use
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-e osd_to_kill=0,1,2,3 argument."
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when: osd_to_kill is not defined
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tasks:
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- import_role:
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name: ceph-defaults
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- import_role:
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name: ceph-facts
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post_tasks:
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- name: set_fact container_exec_cmd build docker exec command (containerized)
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set_fact:
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container_exec_cmd: "{{ container_binary }} exec ceph-mon-{{ hostvars[groups[mon_group_name][0]]['ansible_hostname'] }}"
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when: containerized_deployment | bool
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- name: exit playbook, if can not connect to the cluster
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command: "{{ container_exec_cmd }} timeout 5 ceph --cluster {{ cluster }} health"
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register: ceph_health
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until: ceph_health.stdout.find("HEALTH") > -1
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delegate_to: "{{ groups[mon_group_name][0] }}"
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retries: 5
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delay: 2
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- name: find the host(s) where the osd(s) is/are running on
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command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd find {{ item }}"
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with_items: "{{ osd_to_kill.split(',') }}"
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delegate_to: "{{ groups[mon_group_name][0] }}"
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register: find_osd_hosts
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- name: set_fact osd_hosts
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set_fact:
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osd_hosts: "{{ osd_hosts | default([]) + [ [ (item.stdout | from_json).crush_location.host, (item.stdout | from_json).osd_fsid ] ] }}"
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with_items: "{{ find_osd_hosts.results }}"
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- name: set_fact _osd_hosts
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set_fact:
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_osd_hosts: "{{ _osd_hosts | default([]) + [ [ item.0, item.2 ] ] }}"
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with_nested:
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- "{{ groups.get(osd_group_name) }}"
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- "{{ osd_hosts }}"
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when: hostvars[item.0]['ansible_hostname'] == item.1
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- name: mark osd(s) out of the cluster
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command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd out {{ osd_to_kill.replace(',', ' ') }}"
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run_once: true
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delegate_to: "{{ groups[mon_group_name][0] }}"
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- name: stop osd(s) service
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service:
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name: ceph-osd@{{ item.0 }}
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state: stopped
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enabled: no
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loop: "{{ osd_to_kill.split(',')|zip(_osd_hosts)|list }}"
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delegate_to: "{{ item.1.0 }}"
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- name: zap osd devices
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ceph_volume:
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action: "zap"
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osd_fsid: "{{ item.1 }}"
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environment:
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CEPH_VOLUME_DEBUG: 1
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CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else None }}"
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CEPH_CONTAINER_BINARY: "{{ container_binary }}"
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delegate_to: "{{ item.0 }}"
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loop: "{{ _osd_hosts }}"
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- name: purge osd(s) from the cluster
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command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd purge {{ item }} --yes-i-really-mean-it"
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run_once: true
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delegate_to: "{{ groups[mon_group_name][0] }}"
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with_items: "{{ osd_to_kill.split(',') }}"
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- name: show ceph health
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command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} -s"
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delegate_to: "{{ groups[mon_group_name][0] }}"
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- name: show ceph osd tree
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command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd tree"
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delegate_to: "{{ groups[mon_group_name][0] }}"
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