# sysctl -w fs.file-max=6553560
fs.file-max = 6553560

net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_wmem = 4096 16384 4194304
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.netdev_max_backlog = 262144
net.core.somaxconn = 262144
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_synack_retries = 1
net.ipv4.tcp_syn_retries = 1

net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_fin_timeout = 1
net.ipv4.tcp_keepalive_time = 30
net.ipv4.ip_local_port_range = 1024 65000

vm.overcommit_memory=1
vm.max_map_count = 262144

# error:table full, dropping packet.
net.nf_conntrack_max = 25000000
net.netfilter.nf_conntrack_max = 25000000
net.netfilter.ip_conntrack_tcp_timeout_established = 30
net.netfilter.nf_conntrack_tcp_timeout_close_wait = 10
net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 5
net.netfilter.nf_conntrack_tcp_timeout_time_wait = 5

#net.ipv4.tcp_tw_recycle = 1
#net.ipv4.ip_conntrack_max = 81920                 
#net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 1500

#lvs
#net.ipv4.conf.ens33.arp_ignore=1
#net.ipv4.conf.ens33.arp_announce=2
#net.ipv4.conf.all.arp_ignore=1
#net.ipv4.conf.all.arp_announce=2
#net.ipv4.ip_forward=1