containers-certs.d(5)() containers-certs.d(5)()

containers-certs.d - Directory for storing custom container-registry TLS configurations

A custom TLS configuration for a container registry can be configured by creating a directory under $HOME/.config/containers/certs.d or /etc/containers/certs.d. The name of the directory must correspond to the host:port of the registry (e.g., my-registry.com:5000).

A certs directory can contain one or more files with the following extensions:

  • *.crt files with this extensions will be interpreted as CA certificates
  • *.cert files with this extensions will be interpreted as client certificates
  • *.key files with this extensions will be interpreted as client keys

Note that the client certificate-key pair will be selected by the file name (e.g., client.{cert,key}). An exemplary setup for a registry running at my-registry.com:5000 may look as follows:

/etc/containers/certs.d/    <- Certificate directory
└── my-registry.com:5000    <- Hostname:port

├── client.cert <- Client certificate
├── client.key <- Client key
└── ca.crt <- Certificate authority that signed the registry certificate

Feb 2019, Originally compiled by Valentin Rothberg rothberg@redhat.com ⟨mailto:rothberg@redhat.com⟩