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Full Discussion: Ssh to validate multiple remote hosts connection validation.
Top Forums Shell Programming and Scripting Ssh to validate multiple remote hosts connection validation. Post 303013225 by sadique.manzar on Sunday 18th of February 2018 01:24:33 AM
Old 02-18-2018
Ssh to validate multiple remote hosts connection validation.
Dear Folks,


I am trying to read a config file contains ip and port numbers.
i want to read each line of the config file and check ssh connection is happening or not.

Kindly guide.

Config file:
Code:
abc@1.2.342        22
abc@1.2.343        22
abc@1.2.344        22
abc@1.2.345        22
abc@1.2.3.116       22
abc@1.2.3.117       22
abc@1.2.3.118       22
abc@1.2.3.119       22
abc@1.2.342        2222
abc@1.2.343        2222
abc@1.2.344        2222
abc@1.2.345        2222
abc@1.2.3.116       2222
abc@1.2.3.117       2222
abc@1.2.3.118       2222
abc@1.2.3.119       2222

Code:
#!/bin/sh
while read -r lines || [[ -n $lines ]] ;
do
        hosts=`echo $lines | awk '{print $1}'`
        port=`echo $lines | awk '{print $2}'`
        ssh -q -o "BatchMode=yes" -p $port $hosts "echo 2>&1"
        [ $? -eq 0 ] && echo "Connected to ${hosts} for port ${port}" || echo "Connection refused to ${hosts} for port ${port}, Please check"
done < /home/ssh_configfile

Kindly help, it is checking only for one ip, rest is not passing as an argument.
Regards,
sadique
Last edited by Don Cragun; 02-18-2018 at 05:36 AM.. Reason: Remove "CODE : " in CODE tags.
 

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LEARN ABOUT CENTOS

backup_listhosts

BACKUP_LISTHOSTS(8)					       AFS Command Reference					       BACKUP_LISTHOSTS(8)

NAME

       backup_listhosts - Lists Tape Coordinators registered in the Backup Database

SYNOPSIS

       backup listhosts [-localauth] [-cell <cell name>] [-help]

       backup listh [-l] [-c <cell name>] [-h]

DESCRIPTION

       The backup listhosts command displays the Backup Database record of the port offset numbers defined for Tape Coordinator machines. A Tape
       Coordinator must have an entry in the list to be available for backup operations.

       The existence of an entry does not necessarily indicate that the Tape Coordinator process (butc) is currently running at that port offset.
       To check, issue the backup status command.

OPTIONS

       -localauth
	   Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The backup command interpreter presents it to
	   the Backup Server, Volume Server and VL Server during mutual authentication. Do not combine this flag with the -cell argument. For more
	   details, see backup(8).

       -cell <cell name>
	   Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see backup(8).

       -help
	   Prints the online help for this command. All other valid options are ignored.

OUTPUT

       After a "Tape hosts:" header, the output reports two things about each Tape Coordinator currently defined in the Backup Database:

       o   The hostname of the machine housing the Tape Coordinator. The format of this name depends on the hostname format used when the backup
	   addhost command was issued.

       o   The Tape Coordinator's port offset number.

       The Tape Coordinators appear in the order in which they were added to the Backup Database.

EXAMPLES

       The following example shows the result of the command in the ABC Corporation cell:

	  % backup listhosts
	  Tape hosts:
	      Host backup1.abc.com, port offset 0
	      Host backup1.abc.com, port offset 1
	      Host backup3.abc.com, port offset 4
	      Host backup2.abc.com, port offset 3

PRIVILEGE REQUIRED

       The issuer must be listed in the /etc/openafs/server/UserList file on every machine where the Backup Server is running, or must be logged
       onto a server machine as the local superuser "root" if the -localauth flag is included.

SEE ALSO

       backup(8), backup_addhost(8), backup_delhost(8), backup_status(8)

COPYRIGHT

       IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.  It was converted from HTML to POD by software written by Chas
       Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.

OpenAFS 							    2012-03-26						       BACKUP_LISTHOSTS(8)
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