mirror of https://github.com/ceph/ceph-ansible.git
132 lines
4.2 KiB
YAML
132 lines
4.2 KiB
YAML
---
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# This playbook shrinks Ceph OSDs.
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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_id=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: confirm whether user really meant to remove osd(s) from the cluster
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hosts:
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- localhost
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gather_facts: false
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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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tasks:
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- include_vars: roles/ceph-common/defaults/main.yml
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- include_vars: group_vars/all.yml
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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_ids 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_ids=0,1,2,3 argument."
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when: osd_ids is not defined
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- name: test if ceph command exist
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command: command -v ceph
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changed_when: false
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failed_when: false
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register: ceph_command
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- name: exit playbook, if ceph command does not exist
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debug:
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msg: "The ceph command is not available, please install it :("
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run_once: true
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when:
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- ceph_command.rc != 0
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- name: exit playbook, if cluster files do not exist
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stat:
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path: "{{ item }}"
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register: ceph_conf_key
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with_items:
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- /etc/ceph/{{ cluster }}.conf
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- /etc/ceph/{{ cluster }}.client.admin.keyring
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failed_when: false
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- fail:
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msg: "Ceph's configuration file is not present in /etc/ceph"
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with_items: "{{ ceph_conf_key.results }}"
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when:
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- item.stat.exists == false
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- name: exit playbook, if can not connect to the cluster
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command: 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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retries: 5
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delay: 2
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# NOTE (leseb): just in case, the complex filters mechanism below does not work anymore.
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# This will be a quick and easy fix but will require using the shell module.
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# - name: find the host where the osd(s) is/are running on
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# shell: |
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# ceph --cluster {{ cluster }} osd find {{ item }} | grep -Po '(?<="ip": ")[^:]*'
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# with_items: "{{osd_ids.split(',')}}"
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# register: osd_hosts
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#
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- name: find the host where the osd(s) is/are running on
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command: ceph --cluster {{ cluster }} osd find {{ item }}
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with_items: "{{ osd_ids.split(',') }}"
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register: osd_hosts
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- set_fact: ip_item="{{(item.stdout | from_json).ip}}"
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with_items: "{{ osd_hosts.results }}"
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register: ip_result
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- set_fact: ips="{{ ip_result.results | map(attribute='ansible_facts.ip_item') | list }}"
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- set_fact: real_ips="{{ ips | regex_replace(':[0-9][0-9][0-9][0-9]\/[0-9][0-9][0-9][0-9]', '') }}"
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- name: check if ceph admin key exists on the osd nodes
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stat:
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path: "/etc/ceph/{{ cluster }}.client.admin.keyring"
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register: ceph_admin_key
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with_items: "{{ real_ips }}"
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delegate_to: "{{ item }}"
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failed_when: false
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- fail:
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msg: "The Ceph admin key is not present on the OSD node, please add it and remove it after the playbook is done."
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with_items: "{{ ceph_admin_key.results }}"
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when:
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- item.stat.exists == false
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- name: deactivating osd(s)
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command: ceph-disk deactivate --cluster {{ cluster }} --deactivate-by-id {{ item.0 }} --mark-out
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with_together:
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- "{{ osd_ids.split(',') }}"
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- "{{ real_ips }}"
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delegate_to: "{{ item.1 }}"
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- name: destroying osd(s)
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command: ceph-disk destroy --cluster {{ cluster }} --destroy-by-id {{ item.0 }} --zap
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with_together:
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- "{{ osd_ids.split(',') }}"
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- "{{ real_ips }}"
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delegate_to: "{{ item.1 }}"
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