SWAP drive Alerts in vROps

In our MS SQL environment we use dedicated swap drive wich almost is full becouse of we set it up Custom size. Despite of it is a normal behavior, vROps generate “Guest file system space usage” Alert. In this article I would like to show you how to manage this situation in vRealize Operation Manager and avoid unnecessary alerts.

In this example we have two similar VM with three drive: C: for OS, H: for Kernel and S: for SWAP. From Kernel drive you could figure out, it is a SAP environemt 🙂

SWAP_Alert_vRealize_Operation_001

We want to keep alert to C: and H: drive, but we don’t get alert from S: (swap) drive, unless it is full.

First of all we can create new symptoms to this VMs. You can see the table below. Create Warning (85%) , Immediate (90%) and Critical (95%) symptom to C: and H: drive too. As you can see in table.

For S: drive enough Info level and condition will be “is greather than or equal to” with value 100 (precent). So the swap drive is full, vROps will create an Alert. 100% is just an advice, you can change the value as you wish, customize your environment.

SWAP_Alert_vRealize_Operation_003

We can use “Guest File System stats / Guest File System Usage (%)” metric under effected drive. As you can see, in this list we don’t see S:\ drive.

In the interest of we see our VM’s S:\ drive click the little grey icon next to Metrics select list form.

In the new window you can find a list of all VMs, select that VM wich want to configure, and click OK, than you can see the all drive under Guest File System stats.

Choose drive eg. C:\ and under the drive letter you will find the “Guest File System Usage (%)” metric. Drag and drop to right side of window.

Create all symptoms from list of below.

 

 

 

 

SWAP_Alert_vRealize_Operation_004

Create this Symptomes

Base Object Type Metrics Threshold Name Level Condition Value
vCenter Adapter / Virtual Machine Guest File System stats / C:\ Guest File System Usage (%) Static C Drive space usage at Warning level Warning is greather than or equal to 85
vCenter Adapter / Virtual Machine Guest File System stats / C:\ Guest File System Usage (%) Static C Drive space usage at Immediate level Immediate is greather than or equal to 90
vCenter Adapter / Virtual Machine Guest File System stats / C:\ Guest File System Usage (%) Static C Drive space usage at Critical level Critical is greather than or equal to 95
vCenter Adapter / Virtual Machine Guest File System stats / H:\ Guest File System Usage (%) Static H Drive space usage at Warning level Warning is greather than or equal to 85
vCenter Adapter / Virtual Machine Guest File System stats / H:\ Guest File System Usage (%) Static H Drive space usage at Immediate level Immediate is greather than or equal to 90
vCenter Adapter / Virtual Machine Guest File System stats / H:\ Guest File System Usage (%) Static H Drive space usage at Critical level Critical is greather than or equal to 95
vCenter Adapter / Virtual Machine Guest File System stats / S:\ Guest File System Usage (%) Static S Drive space usage at Info level (SWAP) Info is greather than or equal to 100

From this symptoms we can create new Alert.

Create new Alert

Name Base Object Type Impact Criticality Alert Type and Subtype Wait Cycle Cancel Cycle
SAP LFP Apps virtual machine guest file systems are running out of disk space vCenter Adapter/Virtual Machine Health Symptom Based Virtualization/Hypervisor: Capacity 1 1

If you did everything right, you will see similar things as picture below.

SWAP_Alert_vRealize_Operation_002

Create new Custom Group

Ok, now you can create a new Custom group under Environement / Environment overview menu. Hit the green cross on top of the menu, and configure membership criteria. Part of Policy leave empty for now. In this eximpe I add exact VMs to this group. The name of the new group: “Disable SWAP drive alert”

SWAP_Alert_vRealize_Operation_005

Create new Policy

Go Administration / Policies / Policy Library and add new one. In the “6. Alert / Symptom Definitions” menu disable “One or more virtual machine guest file systems are running out of disk space” default alert, and Enable the newly created alert, in this case “SAP LFP Apps virtual machine guest file systems are running out of disk space”

SWAP_Alert_vRealize_Operation_006

In “8. Apply Policy to Groups” part select the custom group wich was created before, and click OK.

SWAP_Alert_vRealize_Operation_007

If you have any question pls. leave comment.

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