1、环境
- centos7.6
[root@localhost soft]# lsb_release -a
LSB Version: :core-4.1-amd64...
Distributor ID: CentOS
Description: CentOS Linux release 7.6.1810 (Core)
Release: 7.6.1810
Codename: Core
- jdk1.8
[root@localhost soft]# java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
2、下载 elasticsearch-6.2.2.tar.gz
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.2.tar.gz
3、解压到你喜欢的目录
tar zxvf elasticsearch-6.2.2.tar.gz -C /usr/local/develop/elasticsearch/
4、修改config/elasticsearch.yml配置
#数据目录
path.data: /usr/local/develop/elasticsearch/elasticsearch-6.2.2/data
#日志目录
path.logs: /usr/local/develop/elasticsearch/elasticsearch-6.2.2/logs
#支持外网访问
network.host: 0.0.0.0
4.进入目录elasticsearch-6.2.2,并启动elasticsearch
cd elasticsearch-6.2.2/bin
./elasticsearch
# 报错:
java.lang.RuntimeException: can not runelasticsearch as root
5、解决不可以用root用户启动es
#增加用户组
sudo groupadd es
#增加用户,并规定所属用户组和密码
sudo useradd es -g es -p es -M
# 递归更改文件的拥有者
sudo chown -R es:es /usr/local/elasticsearch6.2.2
6、修改max_map_count太小
错误信息:max virtual memory areas vm.max_map_count [65530] is too low
max_map_count:允许一个进程在VMAs(虚拟内存区域)拥有最大数量。
解决:
sudo vim /etc/sysctl.conf
#增加以下内容:
vm.max_map_count=262144
#保存退出vim后使sysctl.conf生效:
sysctl -p
7、最大文件数、最大进程数、 最大锁定内存地址空间。
错误信息:Unable to lock JVM Memory: error=12, reason=Cannot allocate memory
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 locked12345
解决:修改limits.conf配置
sudo vim /etc/security/limits.conf
# 添加如下内容:
es soft nofile 65536
es hard nofile 65536
es soft nproc 65536
es hard nproc 65536
es soft memlock unlimited
es hard memlock unlimited
8、启动elasticsearch
# 切换到es用户,在bin下执行./elasticsearch
su es
./elasticsearch
10、成功后退出再后台启动。
./elasticsearch -d
11、查看状态
linux命令行:
#查看可以监测的参数
curl localhost:9200/_cat
#查看健康信息
curl localhost:9200/_cat/health
浏览器:
#查看elasticsearch是否启动成功
http://ip:9200/
#查看elasticsearch健康状态
http://ip:9200/_cat/health?v
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