/etc/sysctl.conf设置
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
net.ipv4.ip_local_port_range = 1024 65000
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
?
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
?
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
?
# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1
?
# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536
?
# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536
?
# Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736
?
# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296
