Zabbix monitor http service with simple check

Question

How can I add trigger, or to be correct .. how should trigger look like, for net.tcp.service[http,80] so it would sound alarm if http is down longer than minute or two. I know that I can set interval in which zabbix would check if http is present and it will return 0 if http is down and 1 if it up. So let say that after checking 3 times each time http sent 0 ( it was down). How to add trigger for this?

Also, I heard that it's possible to make load graphs for http using zabbix? Anyone know how to do it or have link to some good how to ?

Answer 1

Q: How can I add trigger so it would sound alarm if triggered longer than minute or two

A: You mean, more downtime in last period of time, then trigger will look like this:

With average value:

{net.tcp.service[http,80].avg(120)}<0,5

Or with count:

{net.tcp.service[http,80].count(120)}<60

Or maybe you want to see only pure constant downtime? OK:

{net.tcp.service[http,80].count(120)}<1

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Q: Let say that after checking 3 times each time http sent 0 ( it was down). How to add trigger for this?

A: {net.tcp.service[http,80].count(#3)}<1

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Q?: I heard that it's possible to make load graphs for http using zabbix? Anyone know how to do it or have link to some good how to ?

A: At first, you must evaluate what "load graph for http" means technically: CPU load, CPU usage, RAM usage, connection usage etc. there is no such thing called "http load" :)

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Note: net.tcp.service won't check is your site working or not or is service working fine or not, it's just establishing TCP connection and simple HTTP session. For better availability check use Zabbix Web Monitoring.