#!/bin/bash

TARGET_IP="192.168.12.1"

for ns in $(oc get ns --no-headers | awk '{print $1}'); do
  for epname in gfs glusterfs-dynamic-etcd glusterfs-dynamic-metrics-cassandra-1 glusterfs-dynamic-mongodb glusterfs-dynamic-registry-claim glusterfs-dynamic-sharelatex-docker; do
      ep=$(oc get endpoints "$epname" -n "$ns" -o json 2>/dev/null) || continue

      modified="$(printf '%s' "$ep" | jq \
	--arg ip "$TARGET_IP" \
	'(.subsets[]?.addresses |= map(select(.ip != $ip)))'
     )"

      if diff <(echo "$ep") <(echo "$modified") >/dev/null; then
	continue
      fi

      echo -n "Namespace: $ns/$epname:"
      echo -n "$ep" | jq '.subsets[].addresses'
      echo -n " ===> "
      echo -n "$modified" | jq '.subsets[].addresses'
      echo

     # When verified, uncomment the following line to APPLY:
      echo "$modified" | oc replace -f - -n "$ns"
  done
done