How can I print a log
in VCL?
Can I print log info on screen?
Can I do like this?
sub vcl_recv {
....
log.info(req.http.host); // can i write a log here?
....
}
How can I print a log
in VCL?
Can I print log info on screen?
Can I do like this?
sub vcl_recv {
....
log.info(req.http.host); // can i write a log here?
....
}
Using a vcl config file, import the additional included "standard library", which includes a bunch of utility functions:
v5.x - https://www.varnish-cache.org/docs/5.0/reference/vmod_std.generated.html?#func-log
v4.x - https://www.varnish-cache.org/docs/4.0/reference/vmod_std.generated.html?#func-log
v3.x - (deprecated) https://www.varnish-cache.org/docs/3.0/reference/vmod_std.html#log
See also
man varnishlog
You can see URL with requested URLs varnishlog utility (it able to write log files)
Or output some info to syslog with vmod std and syslog function for
Varnish 3.x https://www.varnish-cache.org/docs/trunk/reference/vmod_std.html#syslogVarnish 5.1 https://varnish-cache.org/docs/5.1/reference/vmod_std.generated.html#func-syslogExample:
Or with C-snippet on Varnish 2.x https://www.varnish-cache.org/trac/wiki/VCLExampleSyslog