Varnish pointing to a Amazon ELB (elastic load balance) does not work.
Error:
Backend host “XXXXXXXXXXX-123456789.us-east-1.elb.amazonaws.com”: resolves to multiple IPv4 addresses.
Only one address is allowed.
I wrote this script …
Varnish Backend Response Monitor
I think it is important to know how much time it is taking for the varnish
to go to the backend (webserver) and return.
The script will show the response …
Monitor Varnish with Nagios
Varnish is an amazing reverse proxy product and it does its
job very well, but how can we know that? Or even better
how can we know it detected problems …