Imported from https://github.com/wikimedia/countervandalism-CVNBot/issues/72.

@Krinkle wrote on 22 June 2022:

It seems for weeks now, the CVNBot for cvn-wikidata (CVNBot18) keeps losing its irc.wikimedia.org connection. That is, within minutes or hours of restarting the bot, we stop receiving messages indefinitely. After this amount of time, _something_ happens after which it presumably is no longer connected to irc.wikimedia.org. I say presumably since the logs say it is connected. But from my own observations, it is not in any channel, and /whois says "No such nickname online".

During this time, the logs are filled with just repeated messages every minute stating that it has Connected to irc.wikimedia.org, but there is no signs of any errors or other explanation for what happened.

Jun 22 10:21:41 cvn-app8 CVNBot.exe[21520]: INFO  [Main] CVNBot.Program [CVNBot18] [1997kB] ordered a restart
Jun 22 10:21:42 cvn-app8 CVNBot.exe[21520]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:21:42 cvn-app8 CVNBot.exe[21520]: INFO  [Main] CVNBot.Program [CVNBot18] Executing: mono /srv/cvn/services/cvnbot/CVNBot18/CVNBot.exe
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Loaded main configuration from /srv/cvn/services/cvnbot/CVNBot18/CVNBot.ini
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Loading messages from ./Console.msgs
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.ProjectList [CVNBot18] Reading projects from ./Projects.xml
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Connected to irc.libera.chat
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Joining feed channel: #cvn-wikidata
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Joining control channel: #cvn-bots
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [Main] CVNBot.Program [CVNBot18] Joining broadcast channel: #cvn-broadcast
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Thread started
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:21:42 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Joining 1 channels
Jun 22 10:21:52 cvn-app8 CVNBot.exe[11922]: INFO  [Thread Pool Worker] CVNBot.ListManager [CVNBot18] Tim threw away 74 items
Jun 22 10:43:13 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:44:38 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:45:42 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:46:46 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:47:50 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:48:54 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:49:58 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:51:02 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:52:06 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:53:10 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:54:14 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:55:18 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:56:22 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:57:26 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:58:30 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 10:59:34 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org
Jun 22 11:00:38 cvn-app8 CVNBot.exe[11922]: INFO  [RCReader] CVNBot.RCReader [CVNBot18] Connected to irc.wikimedia.org