pem) are used for the authentication of the sensor.įor more details like the exact commands and what you have to additionally consider, see the Docker documentation.

The certificates and keys (ending with.-tlsverify=true defines that the access is SSL encrypted and that any connecting client must authenticate.-H fd:// makes the API locally available to get the Docker commands to work on the console.This is the port number that you must provide in section Docker Credentials of the sensor settings. -H tcp: 0.0.0.0:2376 makes the Docker API available for all external IP addresses on port 2376.Configure the Docker daemon to accept connections from clients that provide a trusted certificate from your CA, for example: $ dockerd -H tcp://0.0.0.0:2376 -H fd:// -tlsverify=true -tlscacert=ca.pem -tlscert=cert.pem -tlskey=key.pem $other_args.Ensure that the Common Name matches the hostname used to connect to Docker.Create the server key and certificate signing request (CSR).Generate the CA private and public keys using OpenSSL.In general, you need to follow these steps: Of course, if you already have Docker certificates available, you can use one of these.įind detailed instructions on how to create Docker certificates and keys in the Docker documentation: Protect the Docker daemon socket. See How can I use a trusted SSL certificate with the PRTG web interface? for how to install OpenSSL. So before you add the sensor, create a certificate and keys with OpenSSL. This approach ensures a secure connection from PRTG to Docker, authenticated by a certificate signed by a trusted certificate authority (CA). If you add the Docker Container Status sensor, you need to provide a Private Key and a Certificate to request monitoring data from Docker. This article applies as of PRTG 22 Generating Docker certificate and private key for PRTG

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