[ceph-mon] Skip monmap endpoint check for missing mons

This change adds a condition to ensure that an IP address was
obtained for a ceph-mon kubernetes endpoint before building the
expected endpoint string and checking it against the monmap. If an
IP address isn't available, the check is skipped for that mon.

Change-Id: I45a2e2987b5ef0c27b0bb765f7967fcce1af62e4

ceph-mon/Chart.yaml

@@ -15,6 +15,6 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Ceph Mon
 name: ceph-mon
-version: 0.1.16
+version: 0.1.17
 home: https://github.com/ceph/ceph
 ...

ceph-mon/templates/bin/moncheck/_start.sh.tpl

@@ -41,11 +41,15 @@ function check_mon_addrs {
   for mon in ${mon_hostnames}; do
     local mon_endpoint=$(echo "${mon_dump}" | awk "/${mon}/{print \$2}")
     local mon_ip=$(jq -r ".subsets[0].addresses[] | select(.nodeName == \"${mon}\") | .ip" <<< ${mon_endpoints})
-    local desired_endpoint=$(printf '[v1:%s:%s/0,v2:%s:%s/0]' ${mon_ip} ${v1_port} ${mon_ip} ${v2_port})
 
-    if [[ "${mon_endpoint}" != "${desired_endpoint}" ]]; then
-      echo "endpoint for ${mon} is ${mon_endpoint}, setting it to ${desired_endpoint}"
-      ceph mon set-addrs ${mon} ${desired_endpoint}
+    # Skip this mon if it doesn't appear in the list of kubernetes endpoints
+    if [[ -n "${mon_ip}" ]]; then
+      local desired_endpoint=$(printf '[v1:%s:%s/0,v2:%s:%s/0]' ${mon_ip} ${v1_port} ${mon_ip} ${v2_port})
+
+      if [[ "${mon_endpoint}" != "${desired_endpoint}" ]]; then
+        echo "endpoint for ${mon} is ${mon_endpoint}, setting it to ${desired_endpoint}"
+        ceph mon set-addrs ${mon} ${desired_endpoint}
+      fi
     fi
   done
 }

releasenotes/notes/ceph-mon.yaml

@@ -17,4 +17,5 @@ ceph-mon:
   - 0.1.14 Update htk requirements
   - 0.1.15 Prevent mon-check from removing mons when down temporarily
   - 0.1.16 Correct Ceph Mon Check Ports
+  - 0.1.17 Skip monmap endpoint check for missing mons
 ...