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.
[root@bogon home]# chown -R esuser esdata

4）配置es

[root@bogon esdata]# cat /home/elasticsearch-6.3./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-
#
# 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:
#
# 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 /  + ):
#
#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:
#
# 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
esuser soft nofile
esuser soft memlock unlimited
esuser hard memlock unlimited

以上配置解决问题：

max file descriptors [] for elasticsearch process is too low, increase to at least []
memory locking requested for elasticsearch process but memory is not locked

[root@bogon bin]# sysctl -w vm.max_map_count=
vm.max_map_count =
[root@bogon bin]# more /proc/sys/vm/max_map_count

以上配置解决问题：

max virtual memory areas vm.max_map_count [] is too low, increase to at least []

[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./bin/
[root@bogon bin]# su esuser
[esuser@bogon bin]$ ./elasticsearch
[--17T10::,][INFO ][o.e.n.Node               ] [node-] initializing ...
[--17T10::,][INFO ][o.e.e.NodeEnvironment    ] [node-] using [] data paths, mounts [[/ (rootfs)]], net usable_space [.1gb], net total_space [.6gb], types [rootfs]
[--17T10::,][INFO ][o.e.e.NodeEnvironment    ] [node-] heap size [.3mb], compressed ordinary object pointers [true]
[--17T10::,][INFO ][o.e.n.Node               ] [node-] node name [node-], node ID [cb69e4JjSBKeHJ9y-q-hNA]
[--17T10::,][INFO ][o.e.n.Node               ] [node-] version[6.3.], pid[], build[default/tar/eb782d0/--29T21::.107521Z], OS[Linux/3.10.-514.6..el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) -Bit Server VM/1.8.0_92/25.92-b14]
[--17T10::,][INFO ][o.e.n.Node               ] [node-] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=, -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=, -XX:GCLogFileSize=64m, -Des.path.home=/home/elasticsearch-6.3., -Des.path.conf=/home/elasticsearch-6.3./config, -Des.distribution.flavor=default, -Des.distribution.type=tar]
[--17T10::,][INFO ][o.e.p.PluginsService     ] [node-] loaded module [aggs-matrix-stats]
[--17T10::,][INFO ][o.e.p.PluginsService     ] [node-] loaded module [analysis-common]
[--17T10::,][INFO ][o.e.p.PluginsService     ] [node-] 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/