sysctl.conf

# Kernel sysctl configuration file for tinux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward = 0

# 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

# 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 = 1

# Disable netfilter on bridges.
# Follow 3 settings only for tlinux-xen(no bridge module in kernel default)
#net.bridge.bridge-nf-call-ip6tables = 0
#net.bridge.bridge-nf-call-iptables = 0
#net.bridge.bridge-nf-call-arptables = 0

# 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 = 4294967295

# Controls the maximum number of shared memory segments, in pages
#kernel.shmall = 268435456

# Controls the console_loglevel for dmesg by tlinux team <t_os@tencent.com>
kernel.printk = 2

# disable ipv6 default by tlinux team <t_os@tencent.com>

net.ipv4.conf.all.promote_secondaries = 1
net.ipv4.conf.default.promote_secondaries = 1
net.ipv6.neigh.default.gc_thresh3 = 4096
net.ipv4.neigh.default.gc_thresh3 = 4096

kernel.softlockup_panic = 1
kernel.sysrq = 1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
vm.overcommit_memory = 1
kernel.numa_balancing = 0
kernel.shmmax = 68719476736
net.ipv4.tcp_tw_recycle = 0