centos7上部署安装ES6.5.1版本的记录文档

 

 

步骤一.在没一台上解压安装ES后，进入config中修改elasticsearch.yml

由于需要多实例：比如在192.168.17.234上装两台data节点，所以在/etc/elasticsearch目录下创建两个目录分别为instance1和instance2分别拷贝主目录下config中的配置文件，并修改成如下模板。

模板：

# ======================== Elasticsearch Configuration =========================

# ---------------------------------- Cluster -----------------------------------

# Use a descriptive name for your cluster:

cluster.name: es-test

# ------------------------------------ Node ------------------------------------

# Use a descriptive name for the node:

node.name: node-data1

# 设置不充当master节点，默认为true

node.master: false  

# 设置充当data节点，默认为true

node.data: true

# 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: /opt/data

# Path to log files:

path.logs: /opt/logs

# ----------------------------------- Memory -----------------------------------

# Lock the memory on startup:

#bootstrap.memory_lock: true

# ---------------------------------- Network -----------------------------------

# Set the bind address to a specific IP (IPv4 or IPv6):

network.host: 192.168.17.234

#同一台host上的该端口号从9200开始每增加一台加1

http.port: 9200

#同一台host上的该端口号从9300开始每增加一台加1

transport.tcp.port: 9300

# For more information, consult the network module documentation.

# --------------------------------- Discovery ----------------------------------

# Pass an initial list of hosts to perform discovery when new node is started:

discovery.zen.ping.unicast.hosts: ["192.168.17.232:9300","192.168.17.234:9300","192.168.17.234:9301","192.168.17.235:9300"]

# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):

#

discovery.zen.minimum_master_nodes: 1

# ---------------------------------- Gateway -----------------------------------

# Block initial recovery after a full cluster restart until N nodes are started:

#gateway.recover_after_nodes: 3

# ---------------------------------- Various -----------------------------------

# Require explicit names when deleting indices:

#action.destructive_requires_name: true

 

 

 

步骤二、创建es用户组合es用户，并更改ES主目录权限。

# groupadd es

# useradd es -g es -p es

# chown -R es:es elasticsearch-6.2.4

 

 

步骤三：

多实例启动时，前面需要加入环境。

 

ES_PATH_CONF=/opt/elasticsearch-6.5.1/config/instance1 ./elasticsearch -d -Ecluster.name=es-test -Enode.name=node-data1

 

 

日志报错 max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

解决：vi /etc/security/limits.conf

添加如下

* soft nofile 65536

* hard nofile 131072

*为es用户

修改后要退出es用户连接在登录生效

 

 

报错： max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

vi /etc/sysctl.conf

添加下面配置：

vm.max_map_count=655360

并执行命令：

sysctl -p

 

 

[2018-12-13T04:37:53,657][WARN ][o.e.d.z.ZenDiscovery     ] [node-data1] not enough master nodes discovered during pinging (found [[Candidate{node={node-master}{nKV9YKaZTuqM78nC7jwelA}{jMGhXIqWTw6MmWUsglaa2g}{192.168.17.232}{192.168.17.232:9300}{ml.machine_memory=2968797184, ml.max_open_jobs=20, xpack.installed=true, ml.enabled=true}, clusterStateVersion=-1}]], but needed [3]), pinging again

 

解决：es.yml 文件中discovery.zen.minimum_master_nodes: 3修改成1