修改/etc/security/limits.conf文件
* soft nofile 85536
* soft nproc 85536
* hard nofile 85536
* hard nproc 85536
* - nofile 85536
elasticsearch sfot nofile 100000
elasticsearch hard nofile 100000
vim /etc/security/limits.d/20-nproc.conf
* soft nproc 85536
* hard nproc 85536
root soft nproc unlimited
vi /etc/ssh/sshd_config
将# UseLogin no
UseLogin yes
重启sshd服务
vim /etc/sysctl.conf
vm.max_map_count=655360
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_tw_reuse = 1
fs.file-max = 65536
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_orphan_retries = 1
net.ipv4.tcp_fin_timeout = 25
net.ipv4.tcp_max_orphans = 8192
net.ipv4.ip_local_port_range = 32768 61000
sysctl -p