allocate a single shard

allocate-shard

#!/bin/bash -e
#
# Copyright 2017 Red Hat, Inc. and/or its affiliates
# and other contributors as indicated by the @author tags.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -euo pipefail

shard=0
allow_primary=true

helpMsg() {
cat <<MSG

 Usage: $0 <index> [es_node] [options]
 Command to manually allocate a shard to a given Elasticsearch node

   args:
     index                Required. The index to allocate(e.g. .kibana.02c55f18a892b365bcd1802db9e5c9df39c04674)
     es_node              Optional. The name of the Elasticsearch node (Default: ${DC_NAME:-}

   options:
     --shard=<number>            The shard to allocate. (Default: ${shard})
     --allow-primary=true|false  Default: true
     --help,-h                   This message.
MSG
}

index=${1:-}
node=${2:-"$DC_NAME"}

if [ -z "${index}" ]; then
    helpMsg
    exit 1
fi

while (($#))
do
case $1 in
    --shard=*)
      shard=${1#*=}
      ;;
    --allow-primary=*)
      allow_primary=${1#*=}
      ;;
    --help|-h)
      helpMsg
      exit 0
      ;;
  esac
  shift
done

if [ "${allow_primary}" != "true" ] ; then
  allow_primary='false'
fi

payload="{\"commands\":[{\"allocate\":{\"index\":\"${index}\",\"shard\":${shard},\"node\":\"${node}\",\"allow_primary\":\"${allow_primary}\"}}]}"

oc exec -c elasticsearch $POD -- es_util --query=_cluster/reroute?pretty -XPOST -d ${payload}