Unable to Access SDX SVM Through the GUI, CLI or Console

Unable to Access SDX SVM Through the GUI, CLI or Console

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Article ID: CTX219214

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Description

  • SVM is not reachable from GUI nor from SSH. From GUI when we try to access the SVM URL we get error "Page cannot be displayed" on both http and https.
  • We are able to get access to XenServer IP through SSH and all the VM's on SDX are running fine and accessible. Only SVM is not accessible from GUI/SSH/Console.
  • When we verify df -ah on the XenServer /var is not showing Full. 
  • If we try doing console from XenServer access to SVM we get an invalid password error as shown below which is weird because we are actually able to get to the XenServer with the same password:

    User-added image

Resolution

Below troubleshooting steps can be used to further confirm if we are hitting the same issue:

  • Log in to XenServer IP from SSH client using root user credentials
  • Try doing console to SVM from there (xl console <dom-id-for-svm) and login using nsrecover as username and same password used to login to XenServer IP from SSH
         Please, notice that the SVM could be unresponsive and an SVM reboot might be necessary.
         User-added image

        The image below shows how to access the SVM machine with nsrecover user if nsroot is not working, please take into consideration that nsrecover will use the same nsroot password, not always the default. 

       User-added image
  • Once logged in, do df -h command and confirm if you are seeing the /var full as shown in below screenshot (109%):

    User-added image

  • If yes, then run following command to go to the following directory:
    bash-2.05b# cd /var/mps/backup/backup_strip
  • Run the following command and confirm if you are seeing a high number of backup files there in backup_strip directory:
    bash-2.05b# du -sh
    100G   
  • If you see a huge size of backup files in this folder, you can manually delete all the files in the folder and free up /var space and that should get your SVM access back from GUI/SSH/Console using nsroot user. Run the following command inside backup_strip folder to remove all files.
    bash-2.05b# rm *

Problem Cause

/var directory getting full

Issue/Introduction

SVM is not reachable from GUI nor from SSH. From GUI when we try to access the SVM URL we get error "Page cannot be displayed" on both http and https.