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Can’t start BitNinja because an instance is already running

Solution Just echo an empty string to the file. echo "" > /var/lib/bitninja/blue.pid.Try to start the BitNinja agent with service bitninja start command If that does not work for some reason: Delete the whole file with the following commandrm  /var/lib/bitninja/blue.pid -y&...

BitNinja stopped on the server

The server’s box is red or yellow on the Dashboard. This means that the BitNinja health checking service could not reach BitNinja on the server Check if BitNinja is running We need to check if BitNinja is running on the server with service bitninja status command BitNinja is runni...

BitNinja increases the server load

What process is responsible We need to check what process is responsible for the increased load. To do so: https://knowledgebase.bitninja.io/kb/bitninja-increases-the-server-load/ Run htop or top command, htop is more user-friendlySort the processes according to memory usagein htop ...

(D)DoS detection

DoS vs DDoSThe server’s load is high due to (Distributed) Denial of Service attacks ((D)DoS).In the case of DoS attacks, there are multiple connections established from an IP, BitNinja will block the IP address if the number of connections reaches our threshold. In the case of DDoS, the attack...