add a logline and a help description for CRASHSERVER

irc/handlers.go

@@ -815,6 +815,7 @@ func debugHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
 			rb.Notice(fmt.Sprintf(client.t("To crash the server, issue the following command: /DEBUG CRASHSERVER %s"), code))
 			return false
 		}
+		server.logger.Error("server", fmt.Sprintf("DEBUG CRASHSERVER executed by operator %s", client.Oper().Name))
 		go func() {
 			// intentional nil dereference on a new goroutine, bypassing recover-from-errors
 			var i, j *int

irc/help.go

@@ -153,13 +153,14 @@ https://gist.github.com/DanielOaks/c104ad6e8759c01eb5c826d627caf80d`,
 		oper: true,
 		text: `DEBUG <option>
 
-Prints debug information about the IRCd. <option> can be one of:
+Provides various debugging commands for the IRCd. <option> can be one of:
 
 * GCSTATS: Garbage control statistics.
 * NUMGOROUTINE: Number of goroutines in use.
 * STARTCPUPROFILE: Starts the CPU profiler.
 * STOPCPUPROFILE: Stops the CPU profiler.
-* PROFILEHEAP: Writes out the CPU profiler info.`,
+* PROFILEHEAP: Writes a memory profile.
+* CRASHSERVER: Crashes the server (for use in failover testing)`,
 	},
 	"dline": {
 		oper: true,