Varnish Cache - varnishtop result. Is cache running?

Question

I have installed varnish cache on nginx.

When I do a varnishtop I receive:

   25.56 CLI            Rd help
25.56 CLI            Wr 200 84 ban.url <regexp>
25.56 CLI            Wr 200 0
 4.53 CLI            Rd ban obj.http.X-Varnish-Session == 66c0e5ad9d2a4b38c92035
 2.17 CLI            Rd ban obj.http.X-Varnish-Session == 569fe0eecdbe0c95cf38e2
 1.52 CLI            Rd ban.url (?:cizme-femei|cizme-femei)
 1.47 CLI            Rd ban obj.http.X-Varnish-Session == d8ecf769c08dbf3da26f60
 1.47 CLI            Rd ban obj.http.X-Varnish-Session == 89c15593dc05c5d33f2620
 1.39 CLI            Rd ban obj.http.X-Varnish-Session == 4baf38b66ed6c31e3999fc
 1.37 CLI            Rd ban obj.http.X-Varnish-Session == 57fef6f801287e9c53669c
 1.33 CLI            Rd ban obj.http.X-Varnish-Session == 50d693740b9351f17f3894
 1.32 CLI            Rd ban obj.http.X-Varnish-Session == 71828629f9e7fa5d156e8b
 1.29 CLI            Rd ban obj.http.X-Varnish-Session == f78bb62ce1668e037f32d1
 1.20 CLI            Rd ban obj.http.X-Varnish-Session == a44565de7954d969fa4d14
 1.11 CLI            Rd ban obj.http.X-Varnish-Session == 765aad49d3adc724568218
 1.10 CLI            Rd ban obj.http.X-Varnish-Session == 01831f7dc38e3a912be854
 0.96 CLI            Rd ban obj.http.X-Varnish-Session == 7d7e0380081ce812c01c05
 0.92 CLI            Rd ban obj.http.X-Varnish-Session == b7a4aaa9ce381fc631936d
 0.91 CLI            Rd ban obj.http.X-Varnish-Session == 6a14d688be3a68c5aec89b
 0.90 CLI            Rd ban obj.http.X-Varnish-Session == 569fe0eecdbe0c95cf38e2
 0.83 CLI            Rd ban obj.http.X-Varnish-Session == f62b9d5fac527948cec26a
 0.75 CLI            Rd ban obj.http.X-Varnish-Session == d278d298dcfd9dc895531a
 0.75 CLI            Rd ban obj.http.X-Varnish-Session == 04957dfe8a157986a6a17b
 0.70 CLI            Rd ban obj.http.X-Varnish-Session == dd72c7e2a56110608a897c

does it mean it is working?

thank you very much. t

Answer 1

Since you are seeing output in varnishtop, varnish is indeed running.

The log entries you pasted are all tagged CLI, which are requests and responses made by the varnishadm over the administrative socket.

If you run varnishtop without filtering by tag, you should see many more items if the server is taking HTTP traffic.

Here are some examples of what you might commonly see:

2807.14 VCL_return     deliver
2744.29 TxProtocol     HTTP/1.1
1843.43 TxHeader       Via: 1.1 varnish
1757.00 TxResponse     OK
1756.86 TxStatus       200
1690.57 RxRequest      GET

Another comand you can use to watch varnish is varnishstat which gives you a view of many internal counters including the connection and request rates.