How to reset vCenter SSO admin password from shell

1. Get a putty session to vCenter appliance

2. Run belwo command

3. Select Option 03 and it will generate new password for SSO admin

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Some useful commands for troubleshoot vCenter appliances

Gather perofrmance details from Powercli

ESXi configure ssh time out

Some useful power cli commands

Some useful commands for ESXi

We can use df -h command to get the file system usage.

When can we use it-Most of the time I had to use it to check the file system usage on vCenter appliance.

We can use find command to find files in the ESXi or vCenter file system

In my below example I have used it to find all the vmx files

Ex

find / -name *.vmx

We can use cat command to open a file and read the data

In my below example I have opened one of the main log file(vmkernel.log) using cat viewer

We can use grep command to search something inside the file

In my below example I used grep commands to find logged errors in the vmkernel.log

We can use ps command to fine running vm’s process

Integrate VMware log insight with vCenter

Login to log insight page

Click on Administration

How to configure iSCSI on vSAN

iSCCI is one of the best option where we can use our vSAN datastore from outside. We an configure our vSAN enabled ESXi hosts as iSCSI target.This help us to configure guest level clustering also.

Login to vCenter

Select the cluster

Select Configure

Click on edit button which in line with vSAN iSCSI Target Server option under vSAN services configuration

Select vmk0 adapter from Default iSCSI net(Here I have selected my default management network)

I’m using default port(3260)

I’m not using authentication for this lab setup.

Also I have selected default vSAN policy

How to use VMDK sharing for Guest OS clustering

Operating system clustering is one of the major and popular high availability mechanism in system infrastructure products. Advantage of the os clustering is it can identify the application level failure.

As a systems administrators most of the time we may need to work with MS windows failover clusters. Most of the file servers and SQL clusters are depend on this failover cluster technology. Most of the situation one of the main requirement is this failover cluster is shared lus/disk. Earlier most of the time we sued to have minimum two physical servers for this cluster operation which is directly connect to SAN device(Shared storage). But to get the benefits of virtualization platform and reduce the cost , now we have to use same cluster features on top of the virtualization platform.

1. In my below example Im using two test virtual machines.

2. Now we need to add new scsi controller per this vm

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