Oracle FS1-2 Flash Storage System
 

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Goal

Solution

References

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Goal

This document provides the instructions on how to warmstart the FS1-2 Controller master node.

Solution

One Controller acts as the Master Node. An election between all the Controllers takes place (the number of Controllers does not matter) during the ColdStart of the FS1 (boot) or when the Master Node is power cycled, fully restarted (not a warmstart) or is being Disabled.

The Master Node can be identified using the fscli (no option on the Axiom GUI). FSCLI is available on the webserver running on the FS1: open a web browser on the virtual IP address.

1. Login to the FS1-2 using the pillar account:
   
   
   $ fscli login -u pillar -oracleFS <IP shared address>
    
2. Use fscli to find the Controller master node:
   
   
   $ fscli controller -list -master
   Master
       Fqn : /CONTROLLER-01
       Id  : 508002000158BA50
   
       /CONTROLLER-01
       /CONTROLLER-02 
   
   The master node is /CONTROLLER-01 in the above example.
   
   
3. Clear failure history:
   
   
   $ fscli controller –reenable
   
     Command Succeeded
   
   Clear Failure History is run to clear the internal counter. The controller will disable if the controller warmstarts 3 times in one hour.
   
   
4. Using the information from step 2 above, warmstart the master node:
   
   
   $ fscli controller –reset –controller /CONTROLLER-0X
    
   
   Example:
   
   $ fscli controller -reset -controller /CONTROLLER-01
   
   Command Succeeded
   
   The warmstart takes less than 5 seconds to run. From the step 2, the /CONTROLLER-01 is the master node
   
   
5. Clear failure history again:
   
   
   $ fscli controller –reenable
   
     Command Succeeded
     
   
   
   The failure history and list of excluded Controllers is kept in /var/lib/pillar/pcp/node-info.xml on the Active Pilot.
   After issuing "fscli controller -reenable", none of the nodes in this file should have a status of "true" for either excluded or disabled and the failure_count should be 0.

   Example:
   [root@pilot2 ~]# more /var/lib/pillar/pcp/node-info.xml

   <?xml version="1.0" encoding="UTF-8" ?>
   <node_list>
   <cold_start_failure_count>0</cold_start_failure_count>
   <node>
   <wuName>WNxxxx0</wuName>
   <excluded>false</excluded>
   <disabled>false</disabled>
   <failure_count>0</failure_count>
   </node>
   <node>
   <wuName>WNxxxx1</wuName>
   <excluded>false</excluded>
   <disabled>false</disabled>
   <failure_count>0</failure_count>
   </node>
   </node_list>
   [root@pilot2 ~]#

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References

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