Are you aware that Conntrack session exhaustion is usually due to a DDoS? Unless you normally have 58,662 active sessions (TCP Connections, UDP dstip,dstport,srcip,scrport turples).
to limit sessions
/sbin/sysctl -w net.netfilter.nf_conntrack_max=xxxx
xxxx = number
/sbin/sysctl -w net.netfilter.nf_conntrack_count
to check how many sessions
Use this command to see all of the sessions: cat /proc/net/nf_conntrack
Here is a video tutorial for the same: https://bit.ly/2xZKj3d