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qping

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Introduction

Utility qping is used to validate the runtime status of a Sun Grid Engine service daemon. The current Sun Grid Engine implementation allows one to query the SGE_QMASTER daemon and any running SGE_EXECD daemon. The qping command is used to send a SIM (Status Information Message) to the destination daemon.

The communication layer of the specified daemon will respond with a SIRM (Status Information Response Message) which contains status information about the consulted daemon.

The qping -dump and -dump_tag options allowing an administrator to observe the communication protocol data flow of a Sun Grid Engine service daemon. The qping -dump instruction must be started with root account and on the same host where the observed daemon is running.

qping mysite54
OGE 6.2u7
usage: qping [-help] [-noalias] [-ssl|-tcp] [ [ [-i ] [-info] [-f] ] | [ [-dump_tag tag [param] ] [-dump] [-nonewline] ] ]    
   -i         : set ping interval time
   -info      : show full status information and exit
   -f         : show full status information on each ping interval
   -noalias   : ignore $SGE_ROOT/SGE_CELL/common/host_aliases file
   -ssl       : use SSL framework
   -tcp       : use TCP framework
   -dump      : dump communication traffic (see "communication traffic output options" for additional information)
                   (provides the same output like -dump_tag MSG)
   -dump_tag  : dump communication traffic (see "communication traffic output options" for additional information)
                   tag=ALL  - show all
                   tag=APP  - show application messages
                   tag=MSG               - show commlib protocol messages
                            - ERROR, WARNING, INFO, DEBUG or DPRINTF
   -nonewline : dump output will not have a linebreak within a message
   -help      : show this info
   host       : host name of running component
   port       : port number of running component
   name       : name of running component (e.g.: "qmaster" or "execd")
   id         : id of running component (e.g.: 1 for daemons)

Parameters

Three parameters define so called communication endpoint. A communication endpoint is a triplet of hostname/endpoint name/endpoint id (e.g. hostA/qmaster/1 or subhost/qstat/4).
  1. host Host where daemon is running.
  2. port Port which daemon has bound (should be sge_qmaster/sge_execd port number). Typically 6445 <
  3. name  ("qmaster" or "execd")
  4. id Id of communication endpoint ("1" for daemons) 

Options

-help
Prints a list of all options.

-i interval

Set qping interval time.

The default interval time is one second. Qping will send a SIM (Status Information Message) on each interval time.

-info

Show full status information (see -f for more information) and exit. The exit value 0 indicates no error. On errors qping returns with 1.

-noalias

Ignore host_aliases file, which is located at <sge_root>/<cell>/common/host_aliases. If this option is used it is not necessary to set any Sun Grid Engine environment variable.

-ssl

This option can be used to specify an SSL (Secure Socket Layer) configuration. The qping will use the configuration to connect to services running SSL. If the SGE settings file is not sourced, you have to use the -noalias option to bypass the need for the SGE_ROOT environment variable. The following environment variables are used to specify your certificates: SSL_CA_CERT_FILE - CA certificate file SSL_CERT_FILE - certificates file SSL_KEY_FILE - key file SSL_RAND_FILE - rand file

-tcp

This option is used to select TCP/IP as the protocol used to connect to other services.

-nonewline

Dump output will not have a linebreak within a message and binary messages are not unpacked.

-dump

This option allows an administrator to observe the communication protocol data flow of a Sun Grid Engine service daemon. The qping -dump instruction must be started as root and on the same host where the observed daemon is running.

The output is written to stdout. The environment variable "SGE_QPING_OUTPUT_FORMAT" can be set to hide columns, set a default column width or to set a hostname output format. The value of the environment variable can be set to any combination of the following specifiers separated by a space character:

"h:X"   -> hide column X
"s:X"   -> show column X
"w:X:Y" -> set width of column X to Y
"hn:X"  -> set hostname output parameter X.
           X values are "long" or "short"
Start qping -help to see which columns are available.

-dump_tag tag [param]

This option has the same the same meaning as -dump, but can provide more information by specifying the debug level and message types qping should print:
-dump_tag ALL <debug level>
This option shows all possible debug messages (APP+MSG) for the debug levels, ERROR, WARNING, INFO, DEBUG and DPRINTF. The contacted service must support this kind of debugging. This option is not currently implemented.
-dump_tag APP <debug level>
This option shows only application debug messages for the debug levels, ERROR, WARNING, INFO, DEBUG and DPRINTF. The contacted service must support this kind of debugging. This option is not currently implemented.
-dump_tag MSG
This option has the same behavior as the -dump option.

Examples

qping -info master 6444 qmaster 1 # check status of master from the node
[0]root@master1: # qping -info master1 6444 qmaster 1
11/06/2014 21:57:43:
SIRM version:             0.1
SIRM message id:          1
start time:               11/06/2014 21:01:22 (1415325682)
run time [s]:             3338
messages in read buffer:  0
messages in write buffer: 0
no. of connected clients: 2
status:                   0
info:                     MAIN: R (3337.61) | signaler000: R (3337.57) | event_master000: R (0.45) | timer000: R (8.45) | worker000: R (23.45) | worker001: R (23.45) | listener000: R (3.36) | listener001: R (1.36) | scheduler000: R (8.45) | OK
Monitor:                  disabled
qping -info myhost16 6445 execd 1         # check status of execd from master NOTE execd 1

Communication traffic output options

The environment variable SGE_QPING_OUTPUT_FORMAT can be used to hide columns and to set default column width. For hostname output the parameter hn is used. SGE_QPING_OUTPUT_FORMAT="h:1 h:4 w:1:20" will hide the columns 1 and 4 and set the width of column 1 to 20 characters.
h:X   -> hide column X
s:X   -> show column X
w:X:Y -> set width of column X to Y
hn:X  -> set hostname output parameter X. X values are "long" or "short"
available columns are:
   nr active name      description
   == ====== ====      ===========
   01 yes    time      time of debug output creation
   02 yes    local     endpoint service name where debug client is connected
   03 yes    d.        message direction
   04 yes    remote    name of participating communication endpoint
   05 yes    format    message data format
   06 yes    ack type  message acknowledge type
   07 yes    msg tag   message tag information
   08 yes    msg id    message id
   09 yes    msg rid   message response id
   10 yes    msg len   message length
   11 yes    msg time  time when message was sent/received
   12  no    msg dump  message content dump (xml/bin/cull)
   13  no    info      additional information
   14 yes    msg ltime commlib linger time
   15 yes    con count nr. of connections
ERROR! no option argument

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