sysctl.conf for haproxy

sysctl.conf

## tuning by patrickz ##
## inspire from https://klaver.it/linux/sysctl.conf
## inspire from https://gist.github.com/voluntas/bc54c60aaa7ad6856e6f6a928b79ab6c

fs.file-max = 209708
fs.suid_dumpable = 0
kernel.core_uses_pid = 1
kernel.exec-shield = 1
kernel.kptr_restrict = 1
kernel.maps_protect = 1
kernel.msgmax = 65535
kernel.msgmnb = 65535
kernel.pid_max = 65535
kernel.randomize_va_space = 2
kernel.shmall = 268435456
kernel.shmmax = 268435456
kernel.sysrq = 0
net.core.default_qdisc = fq
net.core.dev_weight = 64
net.core.netdev_max_backlog = 16384
net.core.optmem_max = 65535
net.core.rmem_default = 262144
net.core.rmem_max = 16777216
net.core.somaxconn = 32768
net.core.wmem_default = 262144
net.core.wmem_max = 16777216
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.all.proxy_arp = 0a
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.default.log_martians = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.ip_forward = 0
net.ipv4.ip_local_port_range = 1024 65535
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.gc_thresh1 = 32
net.ipv4.neigh.default.gc_thresh2 = 1024
net.ipv4.neigh.default.gc_thresh3 = 2048
net.ipv4.neigh.default.proxy_qlen = 96
net.ipv4.neigh.default.unres_qlen = 6
net.ipv4.route.flush = 1
net.ipv4.tcp_congestion_control = htcp
net.ipv4.tcp_congestion_control = bbr
net.ipv4.tcp_ecn = 1
net.ipv4.tcp_fastopen = 3
net.ipv4.tcp_fin_timeout = 7
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_max_orphans = 16384
net.ipv4.tcp_max_syn_backlog = 60000
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_notsent_lowat = 16384
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_rfc1337 = 1
net.ipv4.tcp_rmem = 8192 87380 16777216
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_wmem = 8192 65536 16777216
net.ipv4.udp_rmem_min = 16384
net.ipv4.udp_wmem_min = 16384
net.ipv6.conf.all.accept_ra=0
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.autoconf=0
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.default.accept_ra=0
net.ipv6.conf.default.accept_redirects = 0
net.ipv6.conf.default.accept_source_route = 0
net.ipv6.conf.default.autoconf=0
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.eth0.accept_ra=0
net.ipv6.conf.eth0.autoconf=0
net.ipv6.ip6frag_high_thresh = 262144
net.ipv4.tcp_no_metrics_save = 1
net.ipv6.ip6frag_low_thresh = 196608
net.ipv6.route.flush = 1
net.unix.max_dgram_qlen = 50
vm.dirty_background_ratio = 5
vm.dirty_ratio = 30
vm.min_free_kbytes = 65535
vm.mmap_min_addr = 4096
vm.overcommit_memory = 0
vm.overcommit_ratio = 50
vm.swappiness = 30