Sun Storage 7000 Unified Storage System:Appliance SSH service in Maintenance state due to "Restarting too quickly".

Asset ID:	1-72-1276209.1
Update Date:	2012-04-13
Keywords:

Solution Type Problem Resolution Sure

Solution 1276209.1 : Sun Storage 7000 Unified Storage System:Appliance SSH service in Maintenance state due to "Restarting too quickly".

Applies to:

Sun Storage 7410 Unified Storage System - Version: Not Applicable and later   [Release: N/A and later ]
Sun Storage 7720 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun ZFS Storage 7420 - Version: Not Applicable and later    [Release: N/A and later]
Sun ZFS Storage 7320 - Version: Not Applicable and later    [Release: N/A and later]
Sun Storage 7310 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
7000 Appliance OS (Fishworks)

Symptoms

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No SSH access to the NAS.

Seen in the SSH service log, found in the BUI under
Configuration > Services > SSH > Logs

/var/svc/network-ssh:default.log:

Method "start" exited with status 0. ]
Stopping because all processes in service exited. ]
Executing stop method ("/lib/svc/bin/svcio -p -L ro -R /etc/svc/volatile -S /usr/lib/ak/svc/stencil -au -k 15"). ]
Method "stop" exited with status 0. ]
Restarting too quickly, changing state to maintenance. ]

Changes

SFTP (SSH FTP) service was configured to use the same port as the SSH service.

Cause

SFTP runs as a subsystem of SSH and usually uses the same port, however; the 7000 NAS appliance SFTP service uses a non-standard port number for connections to the appliance. This is to avoid conflicts with administrative SSH connections to port 22. By default, the SFTP port is 218 and must be specified on the SFTP client prior to connecting.

Solution

The directions below indicate the steps to change the SFTP port on the appliance. We suggest the default value of 218, but any unused port may be specified.

Browser:

Navigate in the BUI to Maintenance > Configuration.
Select either the ssh or sftp service.
Modify the port used to an unused port.

CLI:

:> configuration services sftp set listen_port=<unused port number>

:> configuration services ssh set listen_port=<unused port number>

Sun ZFS Storage 7000 appliances have built-in online help, accessed by clicking on the Help button in the top right of the BUI masthead. The information in that help wiki is accessible by directing your browser to https://<hostname>:215/wiki or https://<ipaddress>:215/wiki
Once there navigate to: Services>SFTP>SFTP Port
or use the URL https://<hostname>:215/wiki/index.php/Configuration:Services:SFTP#SFTP_Port

Content is mirrored here for offline reading: Sun ZFS Storage 7000 System Administration Guide

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