From bd82c6a3e5efeae69151040c751e483404877656 Mon Sep 17 00:00:00 2001
From: Jesse Pretorius <jesse.pretorius@rackspace.co.uk>
Date: Wed, 12 Dec 2018 12:51:45 +0000
Subject: [PATCH] MNAIO: Recovery the galera cluster with no gvwstate.dat file

On occasion, a set of saved images may not have a gvwstate.dat file.
Given that the MNAIO tooling is for test purposes only, we can take
the risk of just making one up in order to ensure that the cluster
starts on boot. DO NOT DO THIS IN PRODUCTION!

Change-Id: I1b055ef0d02d77afe03d1a90baa2e6890e986c32
---
 multi-node-aio/playbooks/deploy-vms.yml           |  2 +-
 .../playbooks/kvm/prepare-image-galera.sh         | 15 +++++++++++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/multi-node-aio/playbooks/deploy-vms.yml b/multi-node-aio/playbooks/deploy-vms.yml
index 7f7ad997..d8069be8 100644
--- a/multi-node-aio/playbooks/deploy-vms.yml
+++ b/multi-node-aio/playbooks/deploy-vms.yml
@@ -131,7 +131,7 @@
           command: /opt/prepare-image-galera.sh
           register: _galera_prepare
 
-        # guestfissh does not always give a return code which indicates
+        # guestfish does not always give a return code which indicates
         # failure, so we look for our final stdout output as an indicator
         - name: Fail if the preparation script did not complete
           fail:
diff --git a/multi-node-aio/playbooks/kvm/prepare-image-galera.sh b/multi-node-aio/playbooks/kvm/prepare-image-galera.sh
index 87a43df2..f3eba058 100755
--- a/multi-node-aio/playbooks/kvm/prepare-image-galera.sh
+++ b/multi-node-aio/playbooks/kvm/prepare-image-galera.sh
@@ -54,6 +54,10 @@ for cnt in $(ls -1 /tmp | grep galera_container); do
       master_gvwstate_path=${gvwstate_path}
       master_cnt=${cnt}
     fi
+  else
+    # if there is no gvwstate.dat file, then we will
+    # need to use my_uuid later to generate one
+    my_uuid=${uuid_map[$cnt]}
   fi
 
   # if a master container was found, overwrite the uuid
@@ -70,8 +74,15 @@ if [[ "${master_gvwstate_path:-none}" != "none" ]]; then
 elif [[ "${last_gvwstate_path:-none}" != "none" ]]; then
   cp ${last_gvwstate_path} ${tmp_gvwstate}
 else
-  echo "ERROR: No gvwstate.dat file was found. Cannot prepare galera cluster for cluster initialization."
-  exit 1
+  echo "No gvwstate.dat file was found. Attempting to put one together."
+cat > ${tmp_gvwstate}<< EOF
+my_uuid: ${my_uuid}
+#vwbeg
+view_id: 3 ${my_uuid} 3
+bootstrap: 0
+member: ${my_uuid} 0
+#vwend
+EOF
 fi
 member_num=$(awk '/^member: '${my_uuid}'/ {print $3}' ${tmp_gvwstate})