通用Linux內核優化配置

通用Linux內核優化配置

針對CentOS六、CentOS七、Redhat六、Redhat7等系統

net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
kernel.unknown_nmi_panic = 0
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
vm.swappiness = 10

net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_max_orphans = 262144
net.ipv4.tcp_keepalive_time = 60
net.ipv4.tcp_max_tw_buckets = 180000
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.neigh.default.gc_thresh1 = 2048
net.ipv4.neigh.default.gc_thresh2 = 4096
net.ipv4.neigh.default.gc_thresh3 = 8192
net.ipv4.ip_local_port_range = 1024 65535
net.ipv6.conf.all.disable_ipv6 = 1
fs.file-max = 1000000
fs.inotify.max_user_watches = 10000000
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.wmem_default = 16777216
net.core.rmem_default = 16777216
net.core.somaxconn = 262144
net.core.netdev_max_backlog = 262144
net.ipv4.tcp_max_syn_backlog = 8120
net.netfilter.nf_conntrack_max = 1000000