center os 7 安装 elasticSeartch
Centos7下安装配置elasticsearch 6.3.1
1）下载
Elasticsearch 6.3.1 地址：https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.1.tar.gz
2）拷贝
拷贝到服务器上，解压：tar -xvzf elasticsearch-6.3.1.tar.gz 。解压后路径：/home/elasticsearch-6.3.1
3）创建用户
创建用户，创建esdata目录，并赋予权限
[root@bogon home]# adduser esuser [root@bogon home]# cd /home [root@bogon home]# mkdir -p esdata/data [root@bogon home]# mkdir -p esdata/log [root@bogon home]# chown -R esuser elasticsearch-6.3.1 [root@bogon home]# chown -R esuser esdata
4）配置es
[root@bogon esdata]# cat /home/elasticsearch-6.3.1/config/elasticsearch.yml # ======================== Elasticsearch Configuration ========================= # # NOTE: Elasticsearch comes with reasonable defaults for most settings. # Before you set out to tweak and tune the configuration, make sure you # understand what are you trying to accomplish and the consequences. # # The primary way of configuring a node is via this file. This template lists # the most important settings you may want to configure for a production cluster. # # Please consult the documentation for further information on configuration options: # https://www.elastic.co/guide/en/elasticsearch/reference/index.html # # ---------------------------------- Cluster ----------------------------------- # # Use a descriptive name for your cluster: # cluster.name: my-application # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: # node.name: node-1 # # Add custom attributes to the node: # node.attr.rack: r1 # # ----------------------------------- Paths ------------------------------------ # # Path to directory where to store the data (separate multiple locations by comma): # path.data: /home/esdata/data # # Path to log files: # path.logs: /home/esdata/log # # ----------------------------------- Memory ----------------------------------- # # Lock the memory on startup: # bootstrap.memory_lock: true # # Make sure that the heap size is set to about half the memory available # on the system and that the owner of the process is allowed to use this # limit. # # Elasticsearch performs poorly when the system is swapping the memory. # # ---------------------------------- Network ----------------------------------- # # Set the bind address to a specific IP (IPv4 or IPv6): # network.host: 0.0.0.0 # # Set a custom port for HTTP: # http.port: 9200 # # For more information, consult the network module documentation. # # --------------------------------- Discovery ---------------------------------- # # Pass an initial list of hosts to perform discovery when new node is started: # The default list of hosts is ["127.0.0.1", "[::1]"] # discovery.zen.ping.unicast.hosts: ["host1", "host2"] # # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1): # #discovery.zen.minimum_master_nodes: # # For more information, consult the zen discovery module documentation. # # ---------------------------------- Gateway ----------------------------------- # # Block initial recovery after a full cluster restart until N nodes are started: # gateway.recover_after_nodes: 3 # # For more information, consult the gateway module documentation. # # ---------------------------------- Various ----------------------------------- # # Require explicit names when deleting indices: # action.destructive_requires_name: true
5）配置系统
[root@bogon bin]# vim /etc/security/limits.conf（在文件最后添加） esuser hard nofile 65536 esuser soft nofile 65536 esuser soft memlock unlimited esuser hard memlock unlimited
以上配置解决问题：
max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536] memory locking requested for elasticsearch process but memory is not locked
[root@bogon bin]# sysctl -w vm.max_map_count=262144 vm.max_map_count = 262144 [root@bogon bin]# more /proc/sys/vm/max_map_count 262144
以上配置解决问题：
max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[root@bogon logs]# visudo 。。。。。。。。 ## Allow root to run any commands anywhere root ALL=(ALL) ALL esuser ALL=(ALL) ALL 。。。。。。。。
以上配置解决某些情况下无法读写的问题
6）启动
[root@bogon ~]# cd /home/elasticsearch-6.3.1/bin/ [root@bogon bin]# su esuser [esuser@bogon bin]$ ./elasticsearch [2018-07-17T10:17:30,139][INFO ][o.e.n.Node ] [node-1] initializing ... [2018-07-17T10:17:30,234][INFO ][o.e.e.NodeEnvironment ] [node-1] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [22.1gb], net total_space [27.6gb], types [rootfs] [2018-07-17T10:17:30,234][INFO ][o.e.e.NodeEnvironment ] [node-1] heap size [1007.3mb], compressed ordinary object pointers [true] [2018-07-17T10:17:30,236][INFO ][o.e.n.Node ] [node-1] node name [node-1], node ID [cb69e4JjSBKeHJ9y-q-hNA] [2018-07-17T10:17:30,236][INFO ][o.e.n.Node ] [node-1] version[6.3.1], pid[26327], build[default/tar/eb782d0/2018-06-29T21:59:26.107521Z], OS[Linux/3.10.0-514.6.1.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_92/25.92-b14] [2018-07-17T10:17:30,236][INFO ][o.e.n.Node ] [node-1] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/tmp/elasticsearch.F1Jh0AOB, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=data, -XX:ErrorFile=logs/hs_err_pid%p.log, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:logs/gc.log, -XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Des.path.home=/home/elasticsearch-6.3.1, -Des.path.conf=/home/elasticsearch-6.3.1/config, -Des.distribution.flavor=default, -Des.distribution.type=tar] [2018-07-17T10:17:33,136][INFO ][o.e.p.PluginsService ] [node-1] loaded module [aggs-matrix-stats] [2018-07-17T10:17:33,136][INFO ][o.e.p.PluginsService ] [node-1] loaded module [analysis-common] [2018-07-17T10:17:33,137][INFO ][o.e.p.PluginsService ] [node-1] loaded module [ingest-common] 。。。。。。
7）验证
浏览器访问：http://192.168.20.115:9200/ （192.168.20.115是es服务器的IP，另外请确保9200端口能够被外部访问），返回：
{
"name" : "node-1",
"cluster_name" : "my-application",
"cluster_uuid" : "_na_",
"version" : {
"number" : "6.3.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "eb782d0",
"build_date" : "2018-06-29T21:59:26.107521Z",
"build_snapshot" : false,
"lucene_version" : "7.3.1",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
当然最方便的安装方法还是下载docker镜像，官方安装手册：https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html 步骤：
1）下载镜像：docker pull docker.elastic.co/elasticsearch/elasticsearch:6.3.1
2）运行容器：docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:6.3.1
ElasticSearch Head安装
官方的模拟工具是控制台的curl，不是很直观，可以在chrome浏览器中安装head插件来作为请求的工具：head插件的地址：https://chrome.google.com/webstore/detail/elasticsearch-head/ffmkiejjmecolpfloofpjologoblkegm/
