monitor.py 文件源码

def ssh(config, host):
    """
    Check that a host is running SSH

    :param config: Unused
    :param host: The host to check
    :return: 3-tuple of (success, name, message)
        success: Boolean value indicating if there is a problem or not
        name: DNS name
        message: String describing the status
    """
    del config
    name = host
    try:
        ssh_conn = paramiko.SSHClient()
        ssh_conn.set_missing_host_key_policy(
            paramiko.client.MissingHostKeyPolicy())
        ssh_conn.connect(host)
        return True
    except (paramiko.BadHostKeyException, paramiko.AuthenticationException,
            paramiko.SSHException, socket.error) as e:
        return (False, name, "Unable to SSH to %s %s %s"
                % (host, e.__class__, e))