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Network Station status shows multiple "module is not loaded into kernel" errors

Product: Stratusphere Fit/UX  

Product Version: 5.5 and above

Expires on: 365 days from publish date

Updated: October 18, 2013

 

Problem: Network Station status shows multiple module is not loaded into kernel error.  This issue affects Network Stations, but it may affect Stratusphere Hub as well. Stratusphere Hub has a built-in Network Station monitoring traffic going into the Hub itself, therefore the same problem may appear on Hub.

 

Symptoms: Network Station does not capture network traffic and has difficulty communicating with Hub

Invalid system identity.

Module ipt_IDENTITY_RESET is not loaded into kernel. 
Module ipt_identity is not loaded into kernel. 
Module ipt_AUDIT is not loaded into kernel. 
Module identity is not loaded into kernel.

 

Diagnosis:  Go to Network Station's Properties (select the suspected Network Station under Station Administration, and click on "View Properties" button), and verify if the error messages match with the screenshot below:

Screen_Shot_2013-10-18_at_12.54.00_AM.png

If so, this Network Station is affected by this issue.

This issue should also only appear on an upgraded appliance.

 

Possible Resolution(s): Those system modules are not loaded on the appliance because the system boots into a wrong kernel, and it is not compatible with those modules.  To resolve this problem once and for all, we will need to uninstall the older kernel or kernels that we don't need.

  1. Before making any changes, it is recommended to take a snapshot first as a safety precaution.
  2. Log onto the appliance console as friend/sspassword, and then run 'su -' to switch to root.  The default password for root is also 'sspassword'.
    You may also use PuTTY or any other SSH client to login.  See How do I Remote Access Stratusphere Appliance Console?
  3. Show the current running kernel version: uname -r
  4. Show all the kernel RPMs installed on Hub: rpm -q kernel
    The last RPM package should have the greatest version number.  In the case of 5.5.1, it should run kernel 2.6.18-348.16.1.e15.  Compare to the current running kernel version and they should not match, and only precede to the next step if that is the case.
  5. Uninstall older kernel RPMs: rpm -q kernel | grep -v <correct kernel version> | xargs rpm -e
    In 5.5.1, you may put "348.16" in place of <correct kernel version>.  This script will uninstall all kernel RPMs except the correct kernel RPM:Screen_Shot_2013-10-18_at_2.18.46_AM.png
    It should return no error
  6. Reboot the machine: reboot
  7. Log onto the UI after the appliance is back from reboot.  Verify the Network Station Properties.  The status should no longer showing the module errors.

 

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