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Full Discussion: Assistance with testing ssh connections and what the return codes mean
Top Forums UNIX for Beginners Questions & Answers Assistance with testing ssh connections and what the return codes mean Post 303040442 by greavette on Tuesday 29th of October 2019 12:49:06 PM
Old 10-29-2019
Thanks again Chubler_XL for taking the time to reply to my post. We do have a plethora of versions still in use from RHEL 6.9 all they up to 7.7.

I did notice though on a system where I had to change the password...when I login manually I immediately get a message that the password has expired. Is there a way upon first connecting to a system via ssh to capture some reply back that may be used to identify the connection? Here's what I currently have in my script where I check my ssh connection and define a status code based on that initial connection:

Code:
ssh -qno StrictHostKeyChecking=no -o ConnectTimeout=1 user@$InputIP 'ls -l /home/user >/dev/null 2>&1' > /dev/null 2>&1
        status="$(echo $?)"
        echo $status

I then have defined in my script the following status based on the return code from $status above:

Code:
UNREACHABLE="255"
INVALID_PASSWORD="5"
NO_HOME_DIRECTORY="2"
PASSWORD_EXPIRED="1"
SUCCESS="0"

Does the above code look like this could work for me? Is there perhaps a better way to identify a password has expired on a system using our ID?

Thanks!
 

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LEARN ABOUT DEBIAN

fence_alom

FENCE_AGENT(8)						      System Manager's Manual						    FENCE_AGENT(8)

NAME

       fence_alom - Fence agent for Sun ALOM

DESCRIPTION

       fence_alom is an I/O Fencing agent which can be used with ALOM connected machines.

       fence_alom  accepts  options  on  the  command  line  as well as from stdin. Fenced sends parameters through stdin when it execs the agent.
       fence_alom can be run by itself with command line options.  This is useful for testing and for turning outlets on or off from scripts.

       Vendor URL: http://www.sun.com

PARAMETERS


       -o, --action=<action>
	      Fencing Action (Default Value: reboot)

       -a, --ip=<ip>
	      IP Address or Hostname This parameter is always required.

       -l, --username=<name>
	      Login Name This parameter is always required.

       -p, --password=<password>
	      Login password or passphrase

       -S, --password-script=<script>
	      Script to retrieve password

       -x, --ssh
	      SSH connection (Default Value: true)

       -k, --identity-file=<filename>
	      Identity file for ssh

       -4, --inet4-only
	      Forces agent to use IPv4 addresses only

       -6, --inet6-only
	      Forces agent to use IPv6 addresses only

       -u, --ipport=<port>
	      TCP port to use for connection with device

       -v, --verbose
	      Verbose mode

       -D, --debug-file=<debugfile>
	      Write debug information to given file

       -V, --version
	      Display version information and exit

       -h, --help
	      Display help and exit

       --power-timeout
	      Test X seconds for status change after ON/OFF (Default Value: 20)

       --shell-timeout
	      Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       --login-timeout
	      Wait X seconds for cmd prompt after login (Default Value: 5)

       --power-wait
	      Wait X seconds after issuing ON/OFF (Default Value: 0)

       --delay
	      Wait X seconds before fencing is started (Default Value: 0)

       --retry-on
	      Count of attempts to retry power on (Default Value: 1)

ACTIONS


       on     Power on machine.

       off    Power off machine.

       reboot Reboot machine.

       status This returns the status of the plug/virtual machine.

       list   List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise.

       monitor
	      Check if fencing device is running. List available plugs/virtual machines or get status of machine (if it does  not  support  more).

       metadata
	       The operational behavior of this is not known.

STDIN PARAMETERS


       action Fencing Action (Default Value: reboot)

       ipaddr IP Address or Hostname This parameter is always required.

       login  Login Name This parameter is always required.

       passwd Login password or passphrase

       passwd_script
	      Script to retrieve password

       secure SSH connection (Default Value: true)

       identity_file
	      Identity file for ssh

       inet4_only
	      Forces agent to use IPv4 addresses only

       inet6_only
	      Forces agent to use IPv6 addresses only

       ipport TCP port to use for connection with device

       verbose
	      Verbose mode

       debug  Write debug information to given file

       version
	      Display version information and exit

       help   Display help and exit

       power_timeout
	      Test X seconds for status change after ON/OFF (Default Value: 20)

       shell_timeout
	      Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       login_timeout
	      Wait X seconds for cmd prompt after login (Default Value: 5)

       power_wait
	      Wait X seconds after issuing ON/OFF (Default Value: 0)

       delay  Wait X seconds before fencing is started (Default Value: 0)

       retry_on
	      Count of attempts to retry power on (Default Value: 1)

fence_alom (Fence Agent)					    2009-10-20							    FENCE_AGENT(8)
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