cat > '/etc/sysctl.conf' << EOF
fs.file-max=1000000
fs.inotify.max_user_instances=65536

net.ipv4.conf.all.route_localnet=1
net.ipv4.ip_forward=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.ipv4.ip_local_port_range = 2000 65535
net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.lo.forwarding = 1
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_retries1=3
net.ipv4.tcp_retries2=5
net.ipv4.tcp_orphan_retries=3
net.ipv4.tcp_syn_retries=3
net.ipv4.tcp_synack_retries=3
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_fin_timeout=10
net.ipv4.tcp_max_tw_buckets=10000
net.ipv4.tcp_max_syn_backlog=131072
net.core.netdev_max_backlog=131072
net.core.somaxconn=32768
net.ipv4.tcp_keepalive_time=300
net.ipv4.tcp_keepalive_probes=3
net.ipv4.tcp_keepalive_intvl=30
net.ipv4.tcp_fastopen=3
net.ipv4.tcp_autocorking=0
net.ipv4.tcp_slow_start_after_idle=0
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=-2
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=335544320
net.core.wmem_max=335544320
net.ipv4.tcp_rmem=8192 262144 536870912
net.ipv4.tcp_wmem=4096 16384 536870912
net.ipv4.tcp_notsent_lowat = 131072
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.tcp_mem=262144 1048576 4194304
net.ipv4.udp_mem=262144 1048576 4194304
net.ipv4.tcp_congestion_control=bbr
net.core.default_qdisc=fq
net.ipv4.ping_group_range=0 2147483647
EOF
sysctl -p