Skip to main content

Unable to See and add new ESXi hosts in Nexus 1000v


After the VMWare upgrade from 5.x to 6.x and Nexus 1000v upgrade from 4.2 to 5.2 you are unable to add new hosts into the Nexus 1000v distributed switch, although the older hosts are seed added to the N1Kv distributed switch and running fine without any issues.

This happens because Nexus 1000v has no knowledge of new versions of vCenter Server in its postgress database.

You have to manually add the new version in the vCenter database to support the new Version.

First you need to log in the the VCDB on command line, and for that you need to find the userID and password.

To get the userID and password, open C:\ProgramData\VMware\vCenterServer\cfg\vmware-vpx\vcdb.properties

vcdb.properties file contents should look like this

driver = org.postgresql.Driverdbtype = PostgreSQLurl = jdbc:postgresql://localhost:5432/VCDB
username = vcpassword = {FNr2Aad>ws8Xo<Qpassword.encrypted = false

Grab the username and password (default userID happend to be "vc" and the password

To add the new version

Go to this Path on DOS Prompot
C:\Program Files\VMware\vCenter Server\vPostgres\bin\

Run Command
C:\Program Files\VMware\vCenter Server\vPostgres\bin>psql -U vc VCDB
Enter password as found above in the the file at C:\ProgramData\VMware\vCenterServer\cfg\vmware-vpx\vcdb.properties
Password for user vc:

Show database
SELECT * FROM VPX_DVS_COMPATIBLE;

Insert the new version into the database with follwoing command
insert into VPX_DVS_COMPATIBLE VALUES
(42,'esx','6.0+');
(42,'embeddedEsx','6.0+');

Here 42 is the device ID and can be seen in the first column of the output of command
SELECT * FROM VPX_DVS_COMPATIBLE;

Again show the database bases, it should now list the support for vCenter 6.0+ version.

Show database
SELECT * FROM VPX_DVS_COMPATIBLE;

You should see the New vCenter version has been added to the database.

Exit the Database command prompt by typing \q

Restart the vCenter Server and add the hosts to Nexus 1000v normally.

Comments

Popular posts from this blog

a file I/O error has occurred while accessing vmware converter

While converting physical Windows 7 machine to Virtual machine of infrastructure type, I got this error. The error seems it is unable to read/write source or destination datastore.

I have installed VMware-converter-en-6.2.0-8466193 on Windows 7 physical machine with option locally selected. (not at server/client option)

All of my ESXi servers are connected to the vCenter Server, so I had to use vCenter Server's IP address to send this physical machine to the virtual world.

The issue i found was with the dns resolution to the vCenter Server's hostname. Since I am not using the same dns server on the Windows 7 client machine. So I updated the host entries manually for the vCenter Server's hosname to it IP address.

After adding dns eteries to the hostfile of windows 7, I am not getting this "a file I/O error has occurred while accessing vmware converter" and the migration has started.

Connection control operation failed for disk 'ide1:0'

I was getting this error while removing Operating System ISO image mounted on the Virtual Machine.

What worked for me, is
1. Uncheck the "Connected and Connect at power on" from Device Status.
2. Then Change the Device type from "Datastore ISO File to Client Device" Radio Button
3. and press OK to save the changes.

Note:- I was able to remove the mounted ISO only by directly logging to the ESXi at https://esxi-ip-address/ui

where it asks

"The guest operating system has locked the CD-ROM door and is probably using the CD-ROM, which can prevent the guest from recognizing media changes. If possible, eject the CD-ROM from inside the guest before disconnecting. Disconnect anyway and override the lock?"

You need to select yes to eject the CD-ROM and then remove the ISO file successfully.

GNS3 Docker Error while creating node: Docker has returned an error: Cannot connect to host docker:80

Error while creating node: Docker has returned an error: Cannot connect to host docker:80 ssl:False [No such file or directory]

After adding docker template for Alpine Linux in gns3, you get above mentioned message when you want to use alpine linux in GNS3.

To get rid of this message you have to install Docker by following below link
curl -fsSL https://get.docker.com/ | sh

If you do not have curl installed then instal curl first with below command.apt-get install curl
After installing Docker you need to add your user name in the docker group with the following command. $ sudo usermod -aG docker your_username

Verify if the docker service is started with following command$ service docker status
If docker is not started then start with following command $ sudo service docker start
Logout from GNS3 Virtual Machines and log back. Start gns3 and use alpine linux.