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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>
This commit is contained in:
Joris van Lieshout 2014-05-21 17:25:46 +02:00 committed by Daan Hoogland
parent e7ef14abae
commit 45deade1df
1 changed files with 13 additions and 4 deletions
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17
systemvm/patches/debian/config/etc/sysctl.conf
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@ -25,6 +25,8 @@ net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_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
@ -33,13 +35,20 @@ kernel.sysrq = 0
# 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.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 = 0