ip_conntrack: table full, dropping packet

Happen on my old freaking old server this afternoon....i unable to SSH into server at all...and need to physical access and here what i got after plugged the monitor...

ip_conntrack: table full, dropping packet

keep coming and coming... to solve this issue, i need to increase it value..but before that need to check current value first. To do so, need run following command.

cat /proc/sys/net/ipv4/ip_conntrack_max

to find out current usages:-

cat /proc/sys/net/ipv4/netfilter/ip_conntrack_count

Temporary solve this issue by increase the value

echo 191072 > /proc/sys/net/ipv4/ip_conntrack_max

To make the permanent changes, i need to change value from kernel it self, so i edit this file

vi /etc/sysctl.conf

and add this value at the end of file

net.ipv4.ip_conntrack_max=191072

and update the kernel with latest configuration by exec this command

sysctl -p