2020-04-25 elasticsearch
一、简介
二、下载
1、https://www.elastic.co/cn/downloads/past-releases#elasticsearch
2、放在/usr/local 目录下
3、解压：tar -xvf elasticsearch-7.2.1-linux-x86_64.tar.gz
三、安装
1、配置,/usr/local/elasticsearch-7.2.1/config/elasticsearch.yml
整个文件：
# ======================== 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: /tmp/elasticsearch/data # # Path to log files: # path.logs: /tmp/elasticsearch/logs # # ----------------------------------- Memory ----------------------------------- # # Lock the memory on startup: # # bootstrap.memory_lock: true bootstrap.memory_lock: false bootstrap.system_call_filter: false # # 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: 192.168.37.129 # # 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 this node is started: # The default list of hosts is ["127.0.0.1", "[::1]"] # #discovery.seed_hosts: ["host1", "host2"] # # Bootstrap the cluster using an initial set of master-eligible nodes: # #cluster.initial_master_nodes: ["node-1", "node-2"] cluster.initial_master_nodes: ["node-1"] # # For more information, consult the discovery and cluster formation 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
更改elasticsearch的运行内存，，jvm.options文件
linux系统不能直接用root用户运行elasticsearch，所以
新增加es用户，es解压之后，新增加一个elasticsearch用户，这里修改下密码
[root@ljtao3 local]# chown -R esuser elasticsearch-7.2.1
[root@ljtao3 local]# chown -R esuser /tmp/elasticsearch
切换用户
启动：
[root@ljtao3 elasticsearch-7.2.1]# bin/elasticsearch
四、启动es问题处理
遇到的问题：
重启 es 异常
ERROR: [5] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
[2]: max number of threads [1024] for user [es] is too low, increase to at least [4096]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[4]: failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[5]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
[2019-04-09T09:51:29,228][INFO ][o.e.n.Node ] [localhost.localdomain] stopping ...
[2019-04-09T09:51:29,264][INFO ][o.e.n.Node ] [localhost.localdomain] stopped
[2019-04-09T09:51:29,265][INFO ][o.e.n.Node ] [localhost.localdomain] closing ...
[2019-04-09T09:51:29,320][INFO ][o.e.n.Node ] [localhost.localdomain] closed
[2019-04-09T09:51:29,323][INFO ][o.e.x.m.p.NativeController] [localhost.localdomain] Native controller process has stopped - no new native processes can be started
切换root用户
vi /etc/security/limits.conf
在倒数第二行
* soft nofile 65536
* hard nofile 65536
# End of file
vi /etc/sysctl.conf
添加
vm.max_map_count=655360
保存后执行
sysctl -p
重启es 异常
ERROR: [3] bootstrap checks failed
[1]: max number of threads [1024] for user [es] is too low, increase to at least [4096]
[2]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[3]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
vi /etc/security/limits.d/90-nproc.conf
修改
* soft nproc 1024
为
* soft nproc 4096
重启es 异常
ERROR: [2] bootstrap checks failed
[1]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[2]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
在 elasticsearch.yml中添加配置项：bootstrap.system_call_filter为false：
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
重启es 异常
ERROR: [1] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
修改
elasticsearch.yml
取消注释保留一个节点
cluster.initial_master_nodes: ["node-1"]
这个的话，这里的node-1是上面一个默认的记得打开就可以了
重启 正常
五、验证是否开启：
curl http://192.168.37.129:9200
window机器页面访问：http://192.168.37.129:9200/
四、Springboot整合 elasticsearch
