1 files changed, 56 insertions, 0 deletions
diff --git a/roles/etcd/tasks/migration/migrate.yml b/roles/etcd/tasks/migration/migrate.yml
new file mode 100644
index 000000000..54a9c74ff
--- /dev/null
+++ b/roles/etcd/tasks/migration/migrate.yml
@@ -0,0 +1,56 @@
+---
+# Should this be run in a serial manner?
+- set_fact:
+    l_etcd_service: "{{ 'etcd_container' if openshift.common.is_containerized else 'etcd' }}"
+
+- name: Migrate etcd data
+  command: >
+    etcdctl migrate --data-dir={{ etcd_data_dir }}
+  environment:
+    ETCDCTL_API: 3
+  register: l_etcdctl_migrate
+# TODO(jchaloup): If any of the members fails, we need to restore all members to v2 from the pre-migrate backup
+- name: Check the etcd v2 data are correctly migrated
+  fail:
+    msg: "Failed to migrate a member"
+  when: "'finished transforming keys' not in l_etcdctl_migrate.stdout and 'no v2 keys to migrate' not in l_etcdctl_migrate.stdout"
+- name: Migration message
+  debug:
+    msg: "Etcd migration finished with: {{ l_etcdctl_migrate.stdout }}"
+- name: Set ETCD_FORCE_NEW_CLUSTER=true on first etcd host
+  lineinfile:
+    line: "ETCD_FORCE_NEW_CLUSTER=true"
+    dest: /etc/etcd/etcd.conf
+    backup: true
+- name: Start etcd
+  systemd:
+    name: "{{ l_etcd_service }}"
+    state: started
+- name: Wait for cluster to become healthy after bringing up first member
+  command: >
+    etcdctl --cert-file {{ etcd_peer_cert_file }} --key-file {{ etcd_peer_key_file }} --ca-file {{ etcd_peer_ca_file }} --endpoint https://{{ etcd_peer }}:{{ etcd_client_port }} cluster-health
+  register: l_etcd_migrate_health
+  until: l_etcd_migrate_health.rc == 0
+  retries: 3
+  delay: 30
+- name: Unset ETCD_FORCE_NEW_CLUSTER=true on first etcd host
+  lineinfile:
+    line: "ETCD_FORCE_NEW_CLUSTER=true"
+    dest: /etc/etcd/etcd.conf
+    state: absent
+    backup: true
+- name: Restart first etcd host
+  systemd:
+    name: "{{ l_etcd_service }}"
+    state: restarted
+
+- name: Wait for cluster to become healthy after bringing up first member
+  command: >
+    etcdctl --cert-file {{ etcd_peer_cert_file }} --key-file {{ etcd_peer_key_file }} --ca-file {{ etcd_peer_ca_file }} --endpoint https://{{ etcd_peer }}:{{ etcd_client_port }} cluster-health
+  register: l_etcd_migrate_health
+  until: l_etcd_migrate_health.rc == 0
+  retries: 3
+  delay: 30
+
+- set_fact:
+    r_etcd_migrate_success: true