jabber.hot-chilli.net…happened the last days. This occured out of nothing. Same symptomatic like some time ago when the Jabber server thread suddenly took all available resources and killed the server itself.
We digged deep into the problem and hope, we found a solution for it – which we implemented about one hour ago. A short service outage took place because of a restart to activate the setting.
Hopefully we got to the problem.
Are we under attack again? It seems – because the server went down yesterday and today. Sorry for the outage, we are looking into the logs as I write this post. Maybe we can find something…
Since our provider now supports native IPv6 (including reverse DNS) we changed our IPv6 configuration and now no longer use an IPv6 Tunnel Broker. Therefore we had two short service outages today to reboot the machine and activate the new settings.
If you are using IPv6 you might have to flush your DNS (or wait up to 24 hours from now) to get the correct IPs back from DNS.
There was an outage of our Jabber services the last hours. Unfortunally the hard disk ran completly full because of a faultly backup job.
Everything is back online. Sorry guys!
During this night (CEST) we upgraded the Jabber server to ejabberd 2.1.5 – this time the Debian package came available very soon. :-)
At about noon CEST today I just upgraded the server to ejabberd 2.1.4, which is a bugfixing release. Finally the Debian package is available. Sorry for the less than five minute short service downtime. ;-)
Once again the server was hit. At around 8pm yesterday evening the services were unreachable for about 30 minutes, the transports for about 60 minutes.
For sure there will be another incident, but this time everything will get logged. From what we then read out of the logs we will choose how we react. If it has something to do with Nimbuzz, we will block Nimbuzz completely.
Again we suffered a DoS attack. The Jabber services and website were down from ~10:45pm to 00:30am.
For sure we have to do something about this. We are already digging into this, also recieving feedback from other Jabber server admins. Maybe abusive Nimbuzz accounts are the reason and, if this turns out to be true, we are also thinking about firewalling Nimbuzz.
What would you think about blocking Nimbuzz? Are you having friends from Nimbuzz in your roster? Tell us your opinion.