sara2000
asked on
OS alert and Vcentre alert
We have a monitoring tool to monitor our servers for cpu , memory, disk ect. This tool uses wmi and monitor the servers at os level.
This monitoring tool is throwing an alert for a server's cpu recently. This server is a VM.
I do not see any alarm on the vcenter for esxi host or for the vm.
I believe that the esxi host has enough resources to give its vm since i do not receive any alert fro vcentre, i might be wrong.
Should I have to increase the cpu core/memory to avoid the alert?
This monitoring tool is throwing an alert for a server's cpu recently. This server is a VM.
I do not see any alarm on the vcenter for esxi host or for the vm.
I believe that the esxi host has enough resources to give its vm since i do not receive any alert fro vcentre, i might be wrong.
Should I have to increase the cpu core/memory to avoid the alert?
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Sandeep
I agree with above comment where the Monitoring tool could go wrong while collecting data and due to which alert is getting trigger wrongly.
ASKER
Thank you for your reply, Andrew thank you for the link.
Here is something I noticed, hope you can help me on this.
I enabled memory alert at vcenter for both Hosts and VMs for 90%. I get alerts for both esxi and vm.
I enabled DRS and DRS setting is at full automation.
Here I was expecting the vm to move from the esxi which has higher memory utilization(90%) to another, but I do not see any vm migration.
Does this mean that other esxi hosts do not have enough memory to take this vm?
I know the DRS functions because I set the rule to few vms to stay at few esxi only , they were migrated to those esxi hosts.
Here is something I noticed, hope you can help me on this.
I enabled memory alert at vcenter for both Hosts and VMs for 90%. I get alerts for both esxi and vm.
I enabled DRS and DRS setting is at full automation.
Here I was expecting the vm to move from the esxi which has higher memory utilization(90%) to another, but I do not see any vm migration.
Does this mean that other esxi hosts do not have enough memory to take this vm?
I know the DRS functions because I set the rule to few vms to stay at few esxi only , they were migrated to those esxi hosts.
DRS is not a load balancer, it will move VMs automatically, when the hosts are under pressure.
Also you may want to change the DRS settings to Aggressive. (and move the slider to the end!)
Also you may want to change the DRS settings to Aggressive. (and move the slider to the end!)
ASKER
I am confused with ballooning and DRS. hope you can explain?
For an example we allocate 4GB for a vm, the vm will get that amount from its hosting esxi host, in the meantime other vms will try to get their memory from its host. if there is not enough memory at the esxi
Will the DRS move a vm to another host
or
VM will go into ballooning?
For an example we allocate 4GB for a vm, the vm will get that amount from its hosting esxi host, in the meantime other vms will try to get their memory from its host. if there is not enough memory at the esxi
Will the DRS move a vm to another host
or
VM will go into ballooning?
I think this question, is going off topic.
Please post a new question, and myself or other experts will be glad to assist.
Please post a new question, and myself or other experts will be glad to assist.