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Setting up automated tasks
1. The document discusses automating tasks with Varnish Plus by setting up a minimum stack including Varnish Cache Plus, Varnish Administration Console, Varnish Custom Statistics, Varnish agents, and VCS probe. 2. It demonstrates playing with statistics by aggregating and viewing Varnish stats through the Varnish Administration Console, and more VCL fun through automatically deploying and rolling over VCL using a Git hook with the VAC API. 3. Additional benefits discussed include high performance purging with the Super Fast Purger, increasing value with Varnish Control System by enabling live production debugging and real-time statistics.
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Setting up automated tasks
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- 3. Hugo Cruz Product Manager Aboutme • Oslo based developer, from Portugal • Lots of hats, mostly Front-end Email: hugo@varnish-software.com IRC: hugo on irc.linpro.no Twitter: @hrcru
- 4. AGENDA - Automating taskswith VARNISH PLUS • The Varnish Plus minimum stack • Playing with statistics • VCL version control with Git • Cache invalidation • Increase value with VCS
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- 6. Besides black magic,there is only automation and mechanisation - Federico Garcia Lorca
- 7. Monitoring Configuration Business Statistics Automate yourtasks Integrate Varnish Plus in your existing toolset.
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- 9. BenefitsSetup Management tools Realtime monitoring JSONAPI for everything $ Setup Varnish Plus repository $ Install Varnish Cache Plus $ Install varnish-agent and vcs-probe $ Install Varnish Administration Console $ Install Varnish Custom Statistics
- 10. Varnish Cache Plus Supercharged versionof the popular open source HTTP reverse proxy, Varnish Cache Varnish Administration Console Cluster controller for you Varnish(s) installation Varnish Custom Statistics A real-time statistics engine Varnish agents and VCS probe Varnish agent and VCS probe are responsible for extracting data for VAC and VCS Minimal Value stack
- 11. VAC VCS 4.1 VCS probe Varnish agent VarnishCache Plus 4.1 VCS probe Varnish agent 4.0 VCS probe Varnish agent 4.0 VCS probe Varnish agent { UI API UI API Varnish Customs Statistics Varnish Administration Console
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- 13. Different aggregations available RRDstatistical data gathered in the VAC Completely configurable Varnish Stats through VAC
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- 15. 3. automatic deployand rollover. 1. setup a git hook with VAC API 2. change VCL VCL + GIT
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- 17. Benefits high performance purging $curl -X PURGE -H ‘X-Cache-Group: Production’ -H ‘X-HMAC: 0xf7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8 ‘ -H ‘X-Timestamp: 1391641007 http://vac-server:8088/purge-url purge several instances in a group, fast $ “ No need for extra setup. Purger is up and running with VAC, on port 8088.” Issue a purge acl purgers { “127.0.0.1”; “192.168.0.0”/24; } sub vcl_recv { if (req.request == “PURGE”) { if (!client.ip ~ purgers) { error 405 “Method not allowed”; } if (digest.hmac_sha256(“secret-key”,req.url + req.http.x-timestamp + req.http.x-cache-group) != req.http.x-hmac) { error 405 “Method not allowed”; } return (lookup); } } Extra security Super Fast Purger Fully secure
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- 19. Benefits Live Production debugging Business indicators Realtimestatistics engine sub vcl_deliver { # This creates a grouping for each specific value of the Host request std.log("vcs-key: " + req.http.host); # This creates a key based on both the Host header and the URL std.log("vcs-key: URL-“ + req.http.host + req.url); # This will create two keys 'MISS' and 'HIT', each counting # stats for requests matching one of the two conditions. if (obj.hits == 0) { std.log("vcs-key: MISS"); } else { std.log("vcs-key: HIT"); } } Time series API VCS Basic setup (counting hits and misses) A/B testing
- 20. Minimum stack Setup thecomponents Playing with stats VAC powered Varnish stats VCL version control Integrating VCL and GIT Cache Invalidation Using the Super Fast Purger VCS in production Debugging with VCS Summing up
- 21. Thank you! Reach outto me if you have further questions hugo@varnish-software.com