1 files changed, 55 insertions, 0 deletions
diff --git a/roles/etcd_migrate/tasks/check.yml b/roles/etcd_migrate/tasks/check.yml
new file mode 100644
index 000000000..800073873
--- /dev/null
+++ b/roles/etcd_migrate/tasks/check.yml
@@ -0,0 +1,55 @@
+---
+# Check the cluster is healthy
+- include: check_cluster_health.yml
+
+# Check if the member has v3 data already
+# Run the migration only if the data are v2
+- name: Check if there are any v3 data
+  command: >
+    etcdctl --cert {{ etcd_peer_cert_file }} --key {{ etcd_peer_key_file }} --cacert {{ etcd_peer_ca_file }} --endpoints 'https://{{ etcd_peer }}:{{ etcd_client_port }}' get "" --from-key --keys-only -w json --limit 1
+  environment:
+    ETCDCTL_API: 3
+  register: l_etcdctl_output
+
+- fail:
+    msg: "Unable to get a number of v3 keys"
+  when: l_etcdctl_output.rc != 0
+
+- fail:
+    msg: "The etcd has at least one v3 key"
+  when: "'count' in (l_etcdctl_output.stdout | from_json) and (l_etcdctl_output.stdout | from_json).count != 0"
+
+
+# TODO(jchaloup): once the until loop can be used over include/block,
+#                 remove the repetive code
+# - until loop not supported over include statement (nor block)
+#   https://github.com/ansible/ansible/issues/17098
+# - with_items not supported over block
+
+# Check the cluster status for the first time
+- include: check_cluster_status.yml
+
+# Check the cluster status for the second time
+- block:
+  - debug:
+      msg: "l_etcd_cluster_status_ok: {{ l_etcd_cluster_status_ok }}"
+  - name: Wait a while before another check
+    pause:
+      seconds: 5
+    when: not l_etcd_cluster_status_ok | bool
+
+  - include: check_cluster_status.yml
+    when: not l_etcd_cluster_status_ok | bool
+
+
+# Check the cluster status for the third time
+- block:
+  - debug:
+      msg: "l_etcd_cluster_status_ok: {{ l_etcd_cluster_status_ok }}"
+  - name: Wait a while before another check
+    pause:
+      seconds: 5
+    when: not l_etcd_cluster_status_ok | bool
+
+  - include: check_cluster_status.yml
+    when: not l_etcd_cluster_status_ok | bool