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- #
- # /etc/sysctl.conf - Configuration file for setting system variables
- # See /etc/sysctl.d/ for additional system variables
- # See sysctl.conf (5) for information.
- #
- #kernel.domainname = example.com
- # Uncomment the following to stop low-level messages on console
- #kernel.printk = 3 4 1 3
- ##############################################################3
- # Functions previously found in netbase
- #
- # Uncomment the next two lines to enable Spoof protection (reverse-path filter)
- # Turn on Source Address Verification in all interfaces to
- # prevent some spoofing attacks
- #net.ipv4.conf.default.rp_filter=1
- #net.ipv4.conf.all.rp_filter=1
- # Uncomment the next line to enable TCP/IP SYN cookies
- # See http://lwn.net/Articles/277146/
- # Note: This may impact IPv6 TCP sessions too
- #net.ipv4.tcp_syncookies=1
- # Uncomment the next line to enable packet forwarding for IPv4
- #net.ipv4.ip_forward=1
- # Uncomment the next line to enable packet forwarding for IPv6
- # Enabling this option disables Stateless Address Autoconfiguration
- # based on Router Advertisements for this host
- #net.ipv6.conf.all.forwarding=1
- kernel.shmall = 4294967296
- kernel.shmmax = 68719476736
- #net.core.somaxconn=165535
- net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait = 1
- net.ipv4.ip_local_port_range = 2000 65000
- net.ipv4.tcp_window_scaling = 1
- net.ipv4.tcp_max_syn_backlog = 3240000
- # increase socket listen backlog
- net.core.somaxconn = 3240000
- net.ipv4.tcp_max_tw_buckets = 1440000
- # Increase TCP buffer sizes
- net.core.rmem_default = 8388608
- net.core.rmem_max = 16777216
- net.core.wmem_max = 16777216
- net.ipv4.tcp_rmem = 4096 87380 16777216
- net.ipv4.tcp_wmem = 4096 65536 16777216
- net.ipv4.tcp_congestion_control = cubic
- net.ipv4.tcp_fin_timeout = 35
- net.ipv4.tcp_keepalive_time = 1800
- net.ipv4.tcp_keepalive_intvl = 2
- net.ipv4.tcp_keepalive_probes = 2
- net.ipv4.tcp_tw_recycle = 1
- net.ipv4.tcp_tw_reuse = 1
- fs.file-max = 65535
- net.ipv4.tcp_slow_start_after_idle=0
- net.netfilter.nf_conntrack_tcp_timeout_established=600
- net.ipv4.netfilter.ip_conntrack_max=524288
- fs.file-max=1000000
- net.ipv4.ip_local_port_range = 1024 65535
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