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|
---
- name: Backup etcd
hosts: oo_etcd_hosts_to_backup
vars:
embedded_etcd: "{{ groups.oo_etcd_to_config | default([]) | length == 0 }}"
etcdctl_command: "{{ 'etcdctl' if not openshift.common.is_containerized or embedded_etcd else 'docker exec etcd_container etcdctl' if not openshift.common.is_etcd_system_container else 'runc exec etcd etcdctl' }}"
timestamp: "{{ lookup('pipe', 'date +%Y%m%d%H%M%S') }}"
roles:
- openshift_facts
tasks:
# Ensure we persist the etcd role for this host in openshift_facts
- openshift_facts:
role: etcd
local_facts: {}
when: "'etcd' not in openshift"
- set_fact:
etcd_backup_dir: "{{ openshift.etcd.etcd_data_dir }}/openshift-backup-{{ backup_tag | default('') }}{{ timestamp }}"
# TODO: replace shell module with command and update later checks
- name: Check available disk space for etcd backup
shell: df --output=avail -k {{ openshift.etcd.etcd_data_dir }} | tail -n 1
register: avail_disk
# AUDIT:changed_when: `false` because we are only inspecting
# state, not manipulating anything
changed_when: false
# TODO: replace shell module with command and update later checks
- name: Check current etcd disk usage
shell: du --exclude='*openshift-backup*' -k {{ openshift.etcd.etcd_data_dir }} | tail -n 1 | cut -f1
register: etcd_disk_usage
when: embedded_etcd | bool
# AUDIT:changed_when: `false` because we are only inspecting
# state, not manipulating anything
changed_when: false
- name: Abort if insufficient disk space for etcd backup
fail:
msg: >
{{ etcd_disk_usage.stdout }} Kb disk space required for etcd backup,
{{ avail_disk.stdout }} Kb available.
when: (embedded_etcd | bool) and (etcd_disk_usage.stdout|int > avail_disk.stdout|int)
# For non containerized and non embedded we should have the correct version of
# etcd installed already. So don't do anything.
#
# For containerized installs we now exec into etcd_container
#
# For embedded non containerized we need to ensure we have the latest version
# etcd on the host.
- name: Install latest etcd for embedded
package:
name: etcd
state: latest
when:
- embedded_etcd | bool
- not openshift.common.is_atomic | bool
- name: Generate etcd backup
command: >
{{ etcdctl_command }} backup --data-dir={{ openshift.etcd.etcd_data_dir }}
--backup-dir={{ etcd_backup_dir }}
# According to the docs change you can simply copy snap/db
# https://github.com/openshift/openshift-docs/commit/b38042de02d9780842dce95cfa0ef45d53b58bc6
- name: Check for v3 data store
stat:
path: "{{ openshift.etcd.etcd_data_dir }}/member/snap/db"
register: v3_db
- name: Copy etcd v3 data store
command: >
cp -a {{ openshift.etcd.etcd_data_dir }}/member/snap/db
{{ etcd_backup_dir }}/member/snap/
when: v3_db.stat.exists
- set_fact:
etcd_backup_complete: True
- name: Display location of etcd backup
debug:
msg: "Etcd backup created in {{ etcd_backup_dir }}"
- name: Gate on etcd backup
hosts: localhost
connection: local
become: no
tasks:
- set_fact:
etcd_backup_completed: "{{ hostvars
| oo_select_keys(groups.oo_etcd_hosts_to_backup)
| oo_collect('inventory_hostname', {'etcd_backup_complete': true}) }}"
- set_fact:
etcd_backup_failed: "{{ groups.oo_etcd_hosts_to_backup | difference(etcd_backup_completed) }}"
- fail:
msg: "Upgrade cannot continue. The following hosts did not complete etcd backup: {{ etcd_backup_failed | join(',') }}"
when: etcd_backup_failed | length > 0
|
