Using with logcli

[daurnimator]

How can I use logcli to access a loki instance behind mtls?

Loki supports the env vars:

• LOKI_CA_CERT_PATH
• LOKI_CLIENT_CERT_PATH
• LOKI_CLIENT_KEY_PATH

So the right wrapper/alias should work?

[drGrove]

All of the necessary things live in the $XDG_CONFIG_HOME/mtls.

Your key can be found at $XDG_CONFIG_HOME/mtls/$USER.key.gpg (which you would need to decrypt of course). Then the Client and Root certificate can be found at $XDG_CONFIG_HOME/mtls/<server-name>/<server-name>.pem and $XDG_CONFIG_HOME/mtls/<server-name>/<server-name>_Root_CA.pem.

Your key is encrypted to your PGP key mostly for safety reasons.

A mtls proxy command could be added as a separate option, but you wouldn't be able to wrap another command and keep the key old decrypted in memory to my knowledge

[daurnimator]

I'd love a subcommand e.g. mtls run logcli that would

• create a temporary directory that isn't on the file system (e.g. create a directory; then rm -rf it while keeping an open handle to the directory)
• place the key, cert and ca cert into the temporary directory; keep open file handles to them
• run the configured logcli command from the config file, which might be e.g.:

  #!/bin/sh
  export LOKI_CLIENT_KEY_PATH=/dev/fd/3
  export LOKI_CLIENT_CERT_PATH=/dev/fd/4
  export LOKI_CA_CERT_PATH=/dev/fd/5
  exec logcli "$@"