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Syslog application is not started when only some sinks are configured to use it. #2044

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hairyhum opened this issue Jun 25, 2019 · 1 comment · Fixed by #2181
Closed

Syslog application is not started when only some sinks are configured to use it. #2044

hairyhum opened this issue Jun 25, 2019 · 1 comment · Fixed by #2181
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@lukebakken
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bug effort-low
Milestone
3.7.24

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@hairyhum
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Reported in https://groups.google.com/forum/#!topic/rabbitmq-users/1yk3akqVmYE

When trying to configure only some categories to use syslog_lager_backend, the syslog application does not start by default.
This requires starting manually every time rabbitmq node restarts, which is inconvenient.
@hairyhum
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Related to #1728

@lukebakken lukebakken self-assigned this Dec 6, 2019
@lukebakken lukebakken added this to the 3.7.24 milestone Dec 6, 2019
lukebakken added a commit that referenced this issue Dec 9, 2019
@lukebakken
Ensure syslog application is started when used as backend
6a80bc0 
Fixes #2044
lukebakken added a commit that referenced this issue Dec 9, 2019
@lukebakken
Ensure syslog application is started when used as backend
4c71cb6 
Fixes #2044

Fixes #2044

To test -

* Clone https://github.com/lukebakken/rabbitmq-server-2044
* Ensure `syslog-ng` is in your `PATH`, then run `run-syslog-ng.sh`
* Start RabbitMQ using `rabbitmq.config`
* Run the following to log using the federation sink:

```
rabbit_federation_link_util:log_debug(rabbit_misc:r(<<"/">>, exchange), "TEST TEST ~s", [bar]).
```

Without this patch, nothing will be sent to the local `syslog-ng`
server. Also, running `application:which_applications()` will not show
that `syslog` is started. Applying this patch will fix both.
@lukebakken lukebakken mentioned this issue Dec 9, 2019
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@lukebakken lukebakken

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Ensure syslog application is started when used as backend rabbitmq/rabbitmq-server
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@lukebakken @hairyhum