fatrace reports file access events from all running processes. $ sudo apt-get install fatrace nJoy 😉
Simple amazing tool to understand what file access is happening to trouble shoot heavy disk usage Linux
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Category: Troubleshooting
test Graylog GELF UDP input from Bash
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for i in {1..100} ; do echo '{"version": "1.1","host":"david.org","short_message":"A short message that helps you identify what is going on","full_message":"Backtrace here\n\nmore stuff","level":1,"_user_id":9001,"_some_info":"foo","_some_env_var":"bar"}' | nc -w 1 -u graylog.mydomain.com 12201 ; done nJoy 😉
How to test varnish vcl file
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Unlike most other configuration systems varnish went with a compiled configuration so if there is a mistake all you get is : Starting varnish HTTP accelerator: [FAILED] To check what the problem is use the following : varnishd -C -f default.vcl varnishd -C -f default.vcl Message from VCC-compiler: Expected return action name. (input Line…