Login to the VM console from webclient
Login to the appliance with maintance username and password
sudo su
chattr -i /etc/passwd /etc/shadow
enable password with "password root" command
Enable root ssh with making "PermitRootLogin Yes" in /etc/ssh/sshd_config file
restart ssh service by "service ssh restart"
Error:
SSH or WinSCP connection to ESXi host or vCenter Server Appliance fails a message similar to:
Couldn't agree a key exchange algorithm (available: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521, diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,)
Solution:
To resolve this issue, upgrade PuTTy to a version to 0.65 or later from http://www.putty.org/.
Netapp VSC /OTV will lock maint user after 3 unsuccessful login attempts.
Solution:
The maint account is locked after 3 failed attempts, to prevent brute force attacks.
It will get unlocked after 15 minutes, since the last login attempt
If you see the boot options under the VMware VM that already enabled and want to switch legacy follow the below steps.
Note:The process to make the VM bootable again after changing the firmware is quite a pain.You need to create a new boot partition on an MBR-partitioned disk.Then you need to boot from a Windows-installer ISO and run a bunch of commands to create a new BCDstore, add a new boot-option and stuff like that.
From vCenter Webclient:
Power Off the VM
Edit VM settings ->VM Option->Boot Options
The vSphere Clustering Service (vCLS) is a new feature from vCenter 7.0u1 onwards.
vCLS uses agent virtual machines to maintain cluster services health.
vCLS ensures that if vCenter Server becomes unavailable, cluster services remain available to maintain the resources and health of the workloads
The vCLS agent virtual machines (vCLS VMs) are created when you add hosts to clusters.
Up to three vCLS VMs are required to run in each vSphere cluster, distributed within a cluster. vCLS is also enabled on clusters which contain only one or two hosts. In these clusters the number of vCLS VMs is one and two, respectively.
| Number of Hosts in a Cluster | Number of vCLS Agent VMs |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 or more | 3 |
For Extracting the OVA config parameters follow below steps:
1) From vSphere PowerCLI connect to vCenter
Connect-VIServer <Vcenter IP>
2) Define $ovfPath as the .OVA file PATH
3) Get Get-OvfConfiguration :$ovfConfig = Get-OvfConfiguration -Ovf $ovfPath
4) Now from $ovfConfig we can extract by converting to hash table as below.
$ovfconfigHashTable = $ovfconfig.ToHashTable()
$ovfconfigHashTable.Keys | Sort-Object