ulimit sysctl memo

ulimit sysctl

cat <<EOF >> /etc/security/limits.conf
root    soft    nofile  65536
root    hard    nofile  65536
root    soft    stack   16384
root    hard    stack   32768
root    soft    nproc   16384
root    hard    nproc   32768

*       soft    nofile  65536
*       hard    nofile  65536
*       soft    stack   16384
*       hard    stack   32768
*       soft    nproc   16384
*       hard    nproc   32768
EOF


cat <<EOF >>/etc/sysctl.conf
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.conf.all.log_martians = 0
net.core.wmem_max = 1048576
net.core.rmem_max = 1048576
net.core.rmem_default=1048576
net.core.wmem_default=1048576
net.core.optmem_max = 20480
net.ipv4.ip_local_port_range = 1024    65535
net.ipv4.tcp_rmem=4096 87380 1048576
net.ipv4.tcp_wmem=4096 16384 1048576
net.ipv4.tcp_mem=1048576 1048576 1048576
net.ipv4.tcp_keepalive_time = 900
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl = 15
net.core.somaxconn = 4096
net.core.netdev_max_backlog = 4096
net.ipv4.tcp_max_syn_backlog=4096
kernel.sem = 250 32000 96 128
kernel.panic = 60
kernel.sysrq = 1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
vm.swappiness = 0
EOF

sysctl -p