【Elasticsearch6】安装笔记

系统管理员 2023-10-18 15:27 86阅读 0赞

以下是安装es遇到的问题：阅读需俩分钟

修改`elasticsearch-6.1.1/config`目录下的`elasticsearch.yml`文件中的`network.host`值改为`0.0.0.0`

用root权限操作

#### 错误1 ####

ERROR: [2] bootstrap checks failed
    [1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
    [2]: max number of threads [3889] for user [elasticsearch] is too low, increase to at least [4096]

解决问题：

1.  通过root用户登录服务器
2.  `vi /etc/security/limits.conf`
3.  在文件结尾添加如下内容，其中`elasticsearch`上面创建的用户，后面配置的数字就是上面报错信息对应的建议值。

elasticsearch soft nofile 65536
    elasticsearch hard nofile 65536
    
    elasticsearch soft nproc 4096
    elasticsearch hard nproc 4096

#### 错误2 ####

[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
    [2018-04-26T09:09:49,533][INFO ][o.e.n.Node] [reyPF0X] stopping ...
    [2018-04-26T09:09:49,571][INFO ][o.e.n.Node] [reyPF0X] stopped
    [2018-04-26T09:09:49,571][INFO ][o.e.n.Node] [reyPF0X] closing ...
    [2018-04-26T09:09:49,593][INFO ][o.e.n.Node] [reyPF0X] closed

解决：

vi /etc/sysctl.conf

2.添加下面配置：

vm.max_map_count=655360

3.执行命令：

sysctl -p

重启，

#### 错误3 ####

启动内存不足，（物理内存不足）

$./bin/elasticsearch
    Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000085330000, 2060255232, 0) failed; error='Cannot allocate memory' (errno=12)
    #
    # There is insufficient memory for the Java Runtime Environment to continue.
    # Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
    # An error report file with more information is saved as:
    # /data/elasticsearch-5.2.2/hs_err_pid26945.log

解决方法（调小内存）

# vi ${elasticsearch_HOME}/config/jvm.options
    
    #-Xms2g
    #-Xmx2g
    -Xms512m
    -Xmx512m