Revision 271baf11 README.admin

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The administrator can trigger reconciliation manually, by issuing a Ganeti
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OP_INSTANCE_QUERY_DATA command, using gnt-instance info.
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Alternatively, the reconciliation process can be triggered for all VMs using


  		





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the command


  		





  
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Alternatively, the reconciliation process can be triggered for all VMs using the


  		





  
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command


  		





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  ./manage.py reconcile --all


  		





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It is advised, though not strictly necessary, to run the reconciliation process


  		





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periodically, through cron. To avoid overloading the Ganeti master, the


  		





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periodic reconciliation process takes a staggered approach to updating the VMs,


  		





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which is configured through the following parameters:


  		





  
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periodically, through cron. To avoid overloading the Ganeti master, the periodic


  		





  
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reconciliation process takes a staggered approach to updating the VMs, which is


  		





  
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configured through the following parameters:


  		





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* The settings.py RECONCILIATION_MIN parameter, which specifies the


  		





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  maximum time a VM can remain ``non-reconciled''. (default: 30 mins)


  		





  
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* The settings.py RECONCILIATION_MIN parameter, which specifies the maximum time


  		





  
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  a VM can remain ``non-reconciled''. (default: 30 mins)


  		





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* The --interval option to the reconcile command, which declares the


  		





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  interval time between reconciliation attempts (default: 1 min)


  		





  
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* The --interval option to the reconcile command, which declares the interval


  		





  
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  time between reconciliation attempts (default: 1 min)


  		





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On each invocation of the reconcile command, the system will trigger a


  		





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reconciliation for ((num_all_vms/RECONCILIATION_MIN) * interval)


  		





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machines. Obviously the lower the interval value and the higher the


  		





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setting of RECONCILIATION_MIN, the less load is going to be put on Ganeti.


  		





  
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reconciliation for ((num_all_vms/RECONCILIATION_MIN) * interval) machines.


  		





  
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Obviously the lower the interval value and the higher the setting of


  		





  
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RECONCILIATION_MIN, the less load is going to be put on Ganeti.


  		





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