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Elasticsearch单机多实例
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前言
团队新采购一批大内存服务器作为Elasticsaerch节点。根据ES官网文档，单机单实例最多不超64G内存，这批服务器用于单机单实例有些"大材小用" .由于之前用docker做ES集群碰到过坑, 所以这次采用实体跑多实例的方案。 环境ES单机多实例有两种情况,一种为单集群多实例,另外一种为多集群多实例。 本篇主要介绍单机多集群多实例的情况。 由于大多节点配置等信息都雷同，本文用两台服务器做为示例 需求架构图
node1,node2 curl -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.0.0-x86_64.rpm rpm -ivh elasticsearch-7.0.0-x86_64.rpm 创建目录node1,node2 mkdir -p /data/elasticsearch/{t2,t1}/{data,repo,log} chown elasticsearch. elasticsearch/ -R 拷贝配置文件node1,node2 cd /etc/ cp -avP elasticsearch/ t1es/ cp -avP elasticsearch/ t2es/ 配置文件node1 /etc/t2es/elasticsearch.yml cluster: name: t2es routing: allocation: same_shard.host: true initial_master_nodes: - t2-node-70 - t2-node-71 - ... node: name: t2-node-70 master: true data: true max_local_storage_nodes: 2 path: data: /data/elasticsearch/t2/data logs: /data/elasticsearch/t2/log repo: /data/elasticsearch/t2/repo network: host: t2-node-70 http: port: 9200 transport.tcp.port: 9300 discovery.zen.ping.unicast.hosts: ["t2-node-70:9300","t2-node-71:9300" ...] discovery.zen.fd.ping_timeout: "10s" discovery.zen.fd.ping_retries: 10 reindex.remote.whitelist: "192.168.1.*:*"/etc/t1es/elasticsearch.yml cluster: name: t1es routing: allocation: same_shard.host: true initial_master_nodes: - t1-node-70 - t1-node-71 - ... node: name: t1-node-70 master: true data: true max_local_storage_nodes: 2 path: data: /data/elasticsearch/t1/data logs: /data/elasticsearch/t1/log repo: /data/elasticsearch/t1/repo network: host: t1-node-70 http: port: 9201 transport.tcp.port: 9301 discovery.zen.ping.unicast.hosts: ["t1-node-70:9301","t1-node-71:9301" ...] discovery.zen.fd.ping_timeout: "10s" discovery.zen.fd.ping_retries: 10 reindex.remote.whitelist: "192.168.1.*:*"node2 /etc/t2es/elasticsearch.yml ... network: host: t1-node-70 http: port: 9201 transport.tcp.port: 9301 .../etc/t1es/elasticsearch.yml ... network: host: t1-node-70 http: port: 9201 transport.tcp.port: 9301 ... 启动服务配置node1,node2 cd /usr/lib/systemd/system cp -avp elasticsearch.service t2es.service cd /etc/sysconfig cp -avp cp -avP elasticsearch t2es cp -avp cp -avP elasticsearch t1es 修改启动服务配置node1,node2 /usr/lib/systemd/system/t2es [Unit] Description=t2-Elasticsearch Documentation=http://www.elastic.co Wants=network-online.target After=network-online.target [Service] RuntimeDirectory=elasticsearch PrivateTmp=true Environment=ES_HOME=/usr/share/elasticsearch Environment=ES_PATH_CONF=/etc/t2es Environment=PID_DIR=/var/run/elasticsearch Environment=ENV_PATH=/etc/sysconfig/t2es # EnvironmentFile=-/etc/sysconfig/elasticsearch WorkingDirectory=/usr/share/elasticsearch User=elasticsearch Group=elasticsearch ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/t2es.pid --quiet StandardError=inherit LimitNOFILE=65535 LimitNPROC=4096 LimitAS=infinity LimitFSIZE=infinity TimeoutStopSec=0 KillSignal=SIGTERM KillMode=process SendSIGKILL=no SuccessExitStatus=143 [Install] WantedBy=multi-user.target/usr/lib/systemd/system/t1es ... Environment=ES_PATH_CONF=/etc/t2es Environment=PID_DIR=/var/run/elasticsearch Environment=ENV_PATH=/etc/sysconfig/t2es # EnvironmentFile=-/etc/sysconfig/elasticsearch WorkingDirectory=/usr/share/elasticsearch User=elasticsearch Group=elasticsearch ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/t2es.pid --quiet ...编辑/usr/share/elasticsearch/bin/elasticsearch-env 修改 source /etc/sysconfig/elasticsearch if [ ! -z ${ENV_PATH} ] then source ${ENV_PATH} else source /etc/sysconfig/elasticsearch fi/etc/sysconfig/t2es 所有参数配置可以在这里面加 ES_PATH_CONF=/etc/t2es ES_STARTUP_SLEEP_TIME=5 启动node1,node2 systemctl t1es start systemctl t2es start 总结 Elasticsearch 7.x系列需要配置initial_master_nodes.cluster.routing.allocation.same_shard.host防止一台主机存在多个相同切片.node.max_local_storage_nodes配置一台主机可以存在的实例数量. |
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