** Description changed: - Description: Ubuntu 12.04.2 LTS - Release: 12.04 + [Impact] + Under nagios 3.2.3 with state retention enabled, any host aliases or display names assigned to a host would be persisted into the retention file, and would supersede subsequent configuration changes. As a result, changes to either hosts' aliases or display names would not be reflected in either the nagios CGI interface or notification macros (like HOSTALIAS) - nagios3: - Installed: 3.2.3-3ubuntu1 - Candidate: 3.2.3-3ubuntu1 + There are numerous references to this bug online, including several upstream nagios issues: + http://tracker.nagios.org/view.php?id=238 + http://tracker.nagios.org/view.php?id=272 - The problem is described here http://tracker.nagios.org/view.php?id=238 + And several blog posts: + http://ten-fingers-and-a-brain.com/2011/10/nagios-doesnt-update-the-host-alias-macro-%E2%80%93-workaround/ + http://www.claudiokuenzler.com/blog/179/nagios-notifications-contain-wrong-host-alias-name#.VIZph-pGjUY - The solution that worked for me is here - http://www.claudiokuenzler.com/blog/179/nagios-notifications-contain- - wrong-host-alias-name but instead of fully deleting - /var/lib/nagios3/retention.dat I stopped the nagios service update the - alias and restarted it. + [Test Case] + Although the bug is in nagios3-core, it's easiest to observe using nagios3-cgi: + + 1. Install nagios3-cgi + 2. Edit /etc/nagios3/cgi.cfg and set use_authentication=0 + 3. Edit /etc/apache2/conf.d/nagios3.conf and remove the AuthName, AuthType, AuthUserFile, and require lines + 4. Restart apache2 to pick up the new config + 5. Open http://localhost/cgi-bin/nagios3/extinfo.cgi?type=1&host=localhost + 6. Observe that the host is described as "Host localhost (localhost)" - "localhost" is both the host name and the alias + 7. Edit /etc/nagios3/conf.d/localhost_nagios2.cfg and change alias to "otherhost" (line 10 or so) + 8. Restart nagios3 to pick up the new config + 9. Open http://localhost/cgi-bin/nagios3/extinfo.cgi?type=1&host=localhost again + + Buggy behavior: host is still described as "Host localhost (localhost)" + Fixed behavior: host description is updated to "Host otherhost (localhost)" to reflect alias change + + [Regression Potential] + It's difficult to understand what the upstream intent was when this bug was introduced to know if it's addressing a broader issue - both the introduction and resolution of the issue lack useful commentary in the commit messages. + + However, this patch is definitely a behavior change: previously changes + to the disk configuration would not be reflected in the nagios runtime + configuration without manual intervention. It's possible there are use + cases which rely on this behavior. However, it seems unlikely to me that + a user would change a configuration file and restart the daemon and not + intend for those changes to take effect + + This issue has proven to be frustrating to our usage of nagios in + production, and my belief is that fixing it would create less net + confusion than leaving it. However, maybe that's not enough to satisfy + the SRU bar. + + Outside of that change, the patch is very narrow and regression + potential seems low.
** Patch added: "nagios3_3.2.3-3ubuntu1.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/nagios3/+bug/1234376/+attachment/4276679/+files/nagios3_3.2.3-3ubuntu1.1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234376 Title: HOSTALIAS doesn't update after changing config files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nagios3/+bug/1234376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
