More socket connection on zabbix agent

[omid1979]

Dear All,
our zabbixagent install on our server using most connection ( like the image attached ) however it work without any problem
1- can we use one connection for zabbix ( permanent connection ) ?
2- how can limite connection time to solve socket using by zabbix agent ?

[andris]

Permanent connections are not supported between agent and server/proxy.
In passive checks (server connects to agent) a new connection is opened/closed for every value of every item.
Active checks (agent connects to server to send item values) can be more efficient - several items/several values can be transfered in one connection.
Proxy-server connection also is not permanent but it supports multiple item transfer in one connection.

[kloczek]

It is really shame that after more than decade when other OSes like FreeBSD, Solaris (and even Windows) added reuse TCP sockets in default kernel tunables Linux still needs to be manually tuned for this.
Just add to /etc/sysctl.conf:

net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1

and then "sysctl -p /etc/sysctl.conf"