启动ElasticSearch报错[1]: max file descriptors [4096] for elasticsearch process is too low

es启动时有的机器会报以下错误信息:

[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

[2]: max number of threads [3818] 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]

解决办法：

修改 etc/security/limits.conf

sudo vi /etc/security/limits.conf

在文件最后面加上

1. * soft nofile 65536

2. * hard nofile 65536

3. * soft nproc 4096

4. * hard nproc 4096

注：*后面有空格

修改 /etc/sysctl.conf

sudo vi /etc/sysctl.conf

在文件最后面加上

vm.max_map_count=262144

vm.max_map_count=262144

配置重新生效

sysctl -p

重新启动