Hello,
today the server that runs irc.wikimedia.org has been upgraded.
Or actually, we have installed a new, second server running on Debian jessie and ported the puppet manifests and the IRC bot to work on that, while the old server still exists. MW appservers are sending RC data to both of them.
If you are making a new connection to irc.wikimedia.org you should now be served by the new host, kraz.wikimedia.org but old connections have not been broken.
The old server is still running unchanged and is reachable as argon.wikimedia.org (as it was before too).
We have also made the change "URLs in the recent changes IRC feed will no longer be rewritten to unencrypted HTTP." which was announced and scheduled for today, May 2nd.
No action is required if your bot automatically reconnects, but bot owners should ensure no IP addresses are hardcoded (see T123729 for details.)
DNS caches slowly roll over and new connections will use kraz. Existing sessions on argon and clients that hardcoded the argon IP won't be affected yet, but after a grace period we are going to shut down the old server argon.
refs: https://phabricator.wikimedia.org/T123729#2216681 https://meta.wikimedia.org/wiki/Tech/News/2016/02
Best regards,
Daniel