Merge pull request #3860 from sdodson/backup-v3-data

Merged by openshift-bot

playbooks/common/openshift-cluster/upgrades/etcd/backup.yml

@@ -3,8 +3,8 @@
   hosts: etcd_hosts_to_backup
   vars:
     embedded_etcd: "{{ groups.oo_etcd_to_config | default([]) | length == 0 }}"
-    timestamp: "{{ lookup('pipe', 'date +%Y%m%d%H%M%S') }}"
     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:
@@ -13,29 +13,20 @@
       role: etcd
       local_facts: {}
     when: "'etcd' not in openshift"
-
-  - stat: path=/var/lib/openshift
-    register: var_lib_openshift
-
-  - stat: path=/var/lib/origin
-    register: var_lib_origin
-
-  - name: Create origin symlink if necessary
-    file: src=/var/lib/openshift/ dest=/var/lib/origin state=link
-    when: var_lib_openshift.stat.exists == True and var_lib_origin.stat.exists == False
+  - 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
-  # We assume to be using the data dir for all backups.
   - name: Check available disk space for etcd backup
-    shell: df --output=avail -k {{ openshift.common.data_dir }} | tail -n 1
+    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 embedded etcd disk usage
-    shell: du -k {{ openshift.etcd.etcd_data_dir }} | tail -n 1 | cut -f1
+  - 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
@@ -52,37 +43,42 @@
   # For non containerized and non embedded we should have the correct version of
   # etcd installed already. So don't do anything.
   #
-  # For embedded or containerized we need to use the latest because OCP 3.3 uses
-  # a version of etcd that can only be backed up with etcd-3.x and if it's
-  # containerized then etcd version may be newer than that on the host so
-  # upgrade it.
-  #
-  # On atomic we have neither yum nor dnf so ansible throws a hard to debug error
-  # if you use package there, like this: "Could not find a module for unknown."
-  # see https://bugzilla.redhat.com/show_bug.cgi?id=1408668
+  # For containerized installs we now exec into etcd_container
   #
-  # TODO - We should refactor all containerized backups to use the containerized
-  # version of etcd to perform the backup rather than relying on the host's
-  # binaries. Until we do that we'll continue to have problems backing up etcd
-  # when atomic host has an older version than the version that's running in the
-  # container whether that's embedded or not
-  - name: Install latest etcd for containerized or embedded
+  # 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 or openshift.common.is_containerized ) and not openshift.common.is_atomic
+    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={{ openshift.common.data_dir }}/etcd-backup-{{ backup_tag | default('') }}{{ timestamp }}
+      --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 {{ openshift.common.data_dir }}/etcd-backup-{{ backup_tag | default('') }}{{ timestamp }}"
+      msg: "Etcd backup created in {{ etcd_backup_dir }}"
 
 - name: Gate on etcd backup
   hosts: localhost