TCP

The !Tcp target type is designed to test that a TCP connection can be established to a given host and port. It is primarily used in situations where you wish to validate that a network exposed service is accessible where the protocol is not supported by Grey.

Example

An example of this would be checking that your SMTP server is accepting connections.

probes:
  - name: smtp.example
    policy:
      interval: 5000
      timeout: 2000
      retries: 3
    target: !Tcp
      host: smtp.example.com:25
    validators:
      net.ip: !Equals "127.0.0.1"

Inputs

host required

The host property is used to specify the host and port which you would like to connect to. The host should be specified in the format host:port.

Outputs

net.ip

The net.ip property will contain the IP address of the host that was connected to. This will be a string containing the IP address in either its standard IPv4 or IPv6 representation.