elasticSearch启动错误

错误记录

发布时间 : 2021-08-07 00:00

字数:342 阅读 :

max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
编辑/etc/security/limits.conf，追加以下内容；
```
* soft nofile 65536
* hard nofile 65536
```
此文件修改后需要重新登录用户，才会生效
登录后使用ulimit -S -n和ulimit -H -n查看
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
原因分析
看提示可知：缺少默认配置，至少需要配置 discovery.seed_hosts/discovery.seed_providers/cluster.initial_master_nodes中的一个参数.
discovery.seed_hosts: 集群主机列表
discovery.seed_providers: 基于配置文件配置集群主机列表
cluster.initial_master_nodes: 启动时初始化的参与选主的node，生产环境必填

处理办法
修改配置文件，添加参数即可
```
vim config/elasticsearch.yml


#添加配置
discovery.seed_hosts: ["127.0.0.1"]

cluster.initial_master_nodes: ["node-1"]
```

max number of threads [3767] for user [xxx] is too low, increase to at least [4096]

# 脚本
#!/bin/bash
echo "* soft nproc 2048" >> /etc/security/limits.conf
echo "* hard nproc 4096" >> /etc/security/limits.conf
echo "* soft nofile 65536" >> /etc/security/limits.conf
echo "* hard nofile 65536" >> /etc/security/limits.conf
echo "* soft memlock unlimited" >> /etc/security/limits.conf
echo "* hard memlock unlimited" >> /etc/security/limits.conf
echo "vm.max_map_count = 262144" >> /etc/sysctl.conf
sysctl -p
ulimit -l unlimited

initial heap size [268435456] not equal to maximum heap size [536870912]；
去/config/jvm.options中修改一下配置即可
Xms和Xmx的大小要一样