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Diffstat (limited to 'doc/administration/troubleshooting/debug.md')
| -rw-r--r-- | doc/administration/troubleshooting/debug.md | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/doc/administration/troubleshooting/debug.md b/doc/administration/troubleshooting/debug.md index 8c8fa25aa5e..7b57cdbf17f 100644 --- a/doc/administration/troubleshooting/debug.md +++ b/doc/administration/troubleshooting/debug.md @@ -126,7 +126,7 @@ an SMTP server, but you're not seeing mail delivered. Here's how to check the se For more advanced issues, `gdb` is a must-have tool for debugging issues. -### The GNU Project Debugger (gdb) +### The GNU Project Debugger (GDB) To install on Ubuntu/Debian: @@ -140,9 +140,13 @@ On CentOS: sudo yum install gdb ``` +<!-- vale gitlab.Spelling = NO --> + ### rbtrace -GitLab 11.2 ships with [rbtrace](https://github.com/tmm1/rbtrace), which +<!-- vale gitlab.Spelling = YES --> + +GitLab 11.2 ships with [`rbtrace`](https://github.com/tmm1/rbtrace), which allows you to trace Ruby code, view all running threads, take memory dumps, and more. However, this is not enabled by default. To enable it, define the `ENABLE_RBTRACE` variable to the environment. For example, in Omnibus: @@ -175,7 +179,7 @@ downtime. Otherwise skip to the next section. 1. Load the problematic URL 1. Run `sudo gdb -p <PID>` to attach to the Unicorn process. -1. In the gdb window, type: +1. In the GDB window, type: ```plaintext call (void) rb_backtrace() @@ -210,7 +214,7 @@ downtime. Otherwise skip to the next section. ``` Note that if the Unicorn process terminates before you are able to run these -commands, gdb will report an error. To buy more time, you can always raise the +commands, GDB will report an error. To buy more time, you can always raise the Unicorn timeout. For omnibus users, you can edit `/etc/gitlab/gitlab.rb` and increase it from 60 seconds to 300: @@ -246,7 +250,7 @@ separate Rails process to debug the issue: ``` 1. In a new window, run `top`. It should show this Ruby process using 100% CPU. Write down the PID. -1. Follow step 2 from the previous section on using gdb. +1. Follow step 2 from the previous section on using GDB. ### GitLab: API is not accessible @@ -279,4 +283,4 @@ The output in `/tmp/unicorn.txt` may help diagnose the root cause. ## More information - [Debugging Stuck Ruby Processes](https://blog.newrelic.com/engineering/debugging-stuck-ruby-processes-what-to-do-before-you-kill-9/) -- [Cheatsheet of using gdb and Ruby processes](gdb-stuck-ruby.txt) +- [Cheat sheet of using GDB and Ruby processes](gdb-stuck-ruby.txt) |