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62 lines
1.6 KiB
Bash
62 lines
1.6 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2019-12-02 15:06:35 +0000 (Mon, 02 Dec 2019)
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#
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# https://github.com/harisekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/harisekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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usage(){
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echo "
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Simple script to decommission an Elasticsearch node from the cluster
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Defaults to connecting to a Elasticsearch via node localhost:9200
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set \$ELASTICSEARCH_HOST and \$ELASTICSEARCH_PORT to override this
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set \$ELASTICSEARCH_SSL to any value to enable SSL (ignores ssl validation as this is usually self-signed)
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set \$ELASTICSEARCH_OPTS='-u : --negotiate' to use Kerberos ticket in local environment
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${0##*/} <node_ip>
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eg. ${0##*/} 192.168.1.23
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"
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exit 3
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}
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if [ $# -ne 1 ]; then
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usage
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fi
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if [[ "$1" =~ -.* ]]; then
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usage
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fi
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node_ip="$1"
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host="${ELASTICSEARCH_HOST:-localhost}"
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port="${ELASTICSEARCH_PORT:-9200}"
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http=http
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if [ -n "${ELASTICSEARCH_SSL:-}" ]; then
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http=https
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fi
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curl_opts="${ELASTICSEARCH_OPTS:-}"
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# want curl opts split
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# shellcheck disable=SC2086
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if curl -X PUT -k $curl_opts
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"$http://$host:$port/_cluster/settings" \
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-H 'Content-Type: application/json' \
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-d "{ \"transient\" :{ \"cluster.routing.allocation.exclude._ip\" : \"$node_ip\" } }"; then
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printf "\nSuccess. Now wait for background replication to migrate shards off node %s \n" "$1"
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else
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printf "\nFailed\n"
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fi
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