Joris van Lieshout c90bf1231f sysctl improvements. 1. ip_nonlocal_bind for smooth transition in case of a keepalived failover. 2. panic settings so that a vm dies in a way that ACS understands it's down. 3. also up the nf_conntrack limits.
Signed-off-by: Daan Hoogland <daan@onecht.net>
(cherry picked from commit 45deade1df171d9ae5562111bf011ee913ff9dc0)

Conflicts:
	systemvm/patches/debian/config/etc/sysctl.conf

(cherry picked from commit c4d1bf7f2426bfddd96ab9415fe793647e67a5a4)
2014-08-14 14:11:33 +02:00

61 lines
1.7 KiB
Plaintext

# Kernel sysctl configuration file
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# @VERSION@
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
# Controls source route verification
net.ipv4.conf.default.rp_filter = 0
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Respect local interface in ARP interactions
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.default.arp_ignore = 2
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 2
# IPSec NETKEY -- avoid bogus redirects
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
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
# For smooth transition of the vip address in case of a keepalived failover
net.ipv4.ip_nonlocal_bind = 1
# 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
# A better way for the instance to die
kernel.panic = 10
kernel.panic_on_oops = 1
vm.panic_on_oom = 1
# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1
net.ipv4.netfilter.ip_conntrack_max = 1000000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_tw_buckets = 1000000
net.core.somaxconn = 1000000
net.nf_conntrack_max = 1000000
net.netfilter.nf_conntrack_max = 1000000
# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.all.accept_ra = 0
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.all.autoconf = 0