sysctl.conf

net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_intvl = 10
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_rmem = 4096 2097152 33554432
net.ipv4.tcp_wmem = 4096 2097152 33554432
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_tw_buckets = 4800000
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_syncookies = 1
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 67108864
net.core.wmem_default = 67108864
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
net.core.somaxconn = 262144
net.core.netdev_max_backlog = 300000
net.unix.max_dgram_qlen = 10000
vm.overcommit_memory=1
vm.min_free_kbytes=5000000
vm.drop_caches=1
vm.zone_reclaim_mode=0
vm.max_map_count=7549747
vm.dirty_background_ratio=50
vm.dirty_ratio=50
vm.page-cluster=3
vm.dirty_writeback_centisecs=360000
vm.swappiness=5

net.ipv4.ip_forward=1
net.netfilter.nf_conntrack_max=10485760
net.netfilter.nf_conntrack_tcp_timeout_established=300
net.netfilter.nf_conntrack_buckets=655360
net.core.netdev_max_backlog=10000

fs.inotify.max_user_instances=524288
fs.inotify.max_user_watches=524288

kernel.pid_max=348160
kernel.threads-max=33029620
kernel.pty.max=20000
fs.file-max=42653636

net.ipv4.tcp_congestion_control=bbr
net.core.default_qdisc=fq