** Description changed:
[Impact]
+
+ We have seen customer cases where the output of
+ `rabbit_diagnostics:maybe_stuck()` provided helpful information in
+ debugging the root cause. Automatically collecting this information
+ will potentially expedite the debugging of rabbitmq-server related
+ issues.
[Test Case]
+ Run the rabbitmq plugin on a machine running a rabbitmq broker. On a
+ fresh Focal install, the output will look like the following:
+
+ 2020-09-18 12:55:47 There are 257 processes.
+ 2020-09-18 12:55:47 Investigated 1 processes this round, 5000ms to go.
+ 2020-09-18 12:55:47 Investigated 1 processes this round, 4500ms to go.
+ 2020-09-18 12:55:48 Investigated 1 processes this round, 4000ms to go.
+ 2020-09-18 12:55:48 Investigated 1 processes this round, 3500ms to go.
+ 2020-09-18 12:55:49 Investigated 1 processes this round, 3000ms to go.
+ 2020-09-18 12:55:49 Investigated 1 processes this round, 2500ms to go.
+ 2020-09-18 12:55:50 Investigated 1 processes this round, 2000ms to go.
+ 2020-09-18 12:55:50 Investigated 1 processes this round, 1500ms to go.
+ 2020-09-18 12:55:51 Investigated 1 processes this round, 1000ms to go.
+ 2020-09-18 12:55:51 Investigated 1 processes this round, 500ms to go.
+ 2020-09-18 12:55:52 Found 1 suspicious processes.
+ 2020-09-18 12:55:52 [{pid,<10643.1.0>},
+ {registered_name,erts_code_purger},
+ {current_stacktrace,
+ [{erts_code_purger,wait_for_request,0,[]}]},
+ {initial_call,{erts_code_purger,start,0}},
+ {message_queue_len,0},
+ {links,[]},
+ {monitors,[]},
+ {monitored_by,[]},
+ {heap_size,1598}]
+ ok
+
+ In case some Erlang runtime threads are stuck they will show in the
+ above list.
+
[Regression Potential]
+
+ This function was introduced with rabbitmq-server-3.3.4 which covers
+ Xenial upwards. The command would not work on earlier versions of
+ rabbitmq-server.
[Other Info]
* Upstream commit:
https://github.com/sosreport/sos/commit/af5891786ff8c4e33c341fe9cca690fc77ac768f
[Original Description]
Extend the rabbitmq plugin to include the output of:
- sudo rabbitmqctl eval 'rabbit_diagnostics:maybe_stuck().'
+ sudo rabbitmqctl eval 'rabbit_diagnostics:maybe_stuck().'
This information is useful to get insights of the state of the erlang
virtual machine.
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https://bugs.launchpad.net/bugs/1890846
Title:
[plugin][rabbitmq] add output of: rabbitmqctl eval
'rabbit_diagnostics:maybe_stuck().'
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