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POC: replace our external log aggregation feature with rsyslog

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- this change adds rsyslog (https://github.com/rsyslog/rsyslog) as
  a new service that runs on every AWX node (managed by supervisord)
  in particular, this feature requires a recent version (v8.38+) of
  rsyslog that supports the omhttp module
  (https://github.com/rsyslog/rsyslog-doc/pull/750)
- the "external_logger" handler in AWX is now a SysLogHandler that ships
  logs to the local UDP port where rsyslog is configured to listen (by
  default, 51414)
- every time a LOG_AGGREGATOR_* setting is changed, every AWX node
  reconfigures and restarts its local instance of rsyslog so that its
  fowarding settings match what has been configured in AWX
- unlike the prior implementation, if the external logging aggregator
  (splunk/logstash) goes temporarily offline, rsyslog will retain the
  messages and ship them when the log aggregator is back online
- 4xx or 5xx level errors are recorded at /var/log/tower/external.err
This commit is contained in:
Ryan Petrello
2019-10-23 23:54:47 -04:00
committed by Christian Adams
parent eafb751ecc
commit 589d27c88c
14 changed files with 106 additions and 856 deletions
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tools/docker-compose/rsyslog.repo Normal file
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[rsyslog_v8]
name=Adiscon CentOS-$releasever - local packages for $basearch
baseurl=http://rpms.adiscon.com/v8-stable/epel-$releasever/$basearch
enabled=1
gpgcheck=0
gpgkey=http://rpms.adiscon.com/RPM-GPG-KEY-Adiscon
protect=1