ssh.HPE3PARSSHClient shownode incomplete output

[lsefcik]

We are using ssh.HPE3PARSSHClient for monitoring scripts.
For 2-node systems using command shownode we are experiencing incomplete output. Node 0 and also the header is missing. This is not happening all the time, about 6 times per day.

Complete output:

,​,​,​,​,​,​,​Control,​Data,​Cache
Node,​----Name----,​-State-,​Master,​InCluster,​-Service_LED,​---LED---,​Mem(MB),​Mem(MB),​Available(%)
0,​CZ29190K73-0,​OK,​Yes,​Yes,​Off,​GreenBlnk,​16384,​16384,​100
1,​CZ29190K73-1,​OK,​No,​Yes,​Off,​GreenBlnk,​16384,​16384,​100

Incomplete output:

1,​CZ29190K73-1,​OK,​No,​Yes,​Off,​GreenBlnk,​16384,​16384,​100

We have proven there is no problem on the system. In the same time we executed the command in a different way, the output was always complete. The problem does not occur for 4-node systems.

Function getting the data:

def get_data_ssh(array, cmd_list, severity_rc):

    cl = ssh.HPE3PARSSHClient(array, username, password, conn_timeout=timeout_ssh)

    try:
        cl.open()

    except paramiko.ssh_exception.SSHException:
        print('CRITICAL: Login to {} via ssh failed '.format(array))
        print(os.linesep + 'Process runtime: ' + str(time.time() - start_time) + ' seconds')
        exit(severity_rc)

    data = cl.run(cmd_list)
    cl.close()
    return data