From 2f87a9a9f6818c8feb83f2b9617040f137f0fbb3 Mon Sep 17 00:00:00 2001
From: Deirdre Connolly <deirdre@zfnd.org>
Date: Fri, 19 Jun 2020 03:26:31 -0400
Subject: [PATCH] Update existing managed instance groups on deploy

---
 .github/workflows/push.yml | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 2f5d3db5..926a60f7 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -73,12 +73,20 @@ jobs:
     #     --description="Allow incoming Zcash traffic from anywhere" \
 
     # Deploy managed instance group using the new instance template
-    - name: Deploy managed instance group
+    # - name: Deploy managed instance group
+    #   run: |
+    #     gcloud compute instance-groups managed create \
+    #       "zebrad-$SHORT_BRANCH_NAME-$SHA7" \
+    #       --template "zebrad-$SHORT_BRANCH_NAME-$SHA7" \
+    #       --health-check zebrad-tracing-filter \
+    #       --initial-delay 30 \
+    #       --region us-central1 \
+    #       --size 2
+
+    # Rolls out update to existing group using the new instance template
+    - name: Update managed instance group
       run: |
-        gcloud compute instance-groups managed create \
-          "zebrad-$SHORT_BRANCH_NAME-$SHA7" \
-          --template "zebrad-$SHORT_BRANCH_NAME-$SHA7" \
-          --health-check zebrad-tracing-filter \
-          --initial-delay 30 \
+        gcloud compute instance-groups managed rolling-action start-update \
+          "zebrad-$SHORT_BRANCH_NAME" \
+          --version template="zebrad-$SHORT_BRANCH_NAME-$SHA7" \
           --region us-central1 \
-          --size 2