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By Pranay Jha | Jan 24, 2020 | In Articles | Update: Jan 24, 2020 | Full Views [ 31708 ]

Trouble

All hosts in vCenter server are showing Red Alert and notification is "ESXi Host Certificate Status"

Error: ESXi Host Certificate Status

Solution

This issue is related to certificate being used for vSphere environment. To attain to a conclude of this trouble, we have to look into Self-Signed VMCA root certificate.

Please note that Certificates are managed by PSC server. If you are using external PSC, then you accept to login to PSC server. If PSC and vCenter is running on aforementioned server, then you lot will use same server to login. Follow below steps to find PSC server if yous don't know.

Step 1: To find PSC server, login to vCenter server using web client.

· Select vCenter Server Name > Configure > Avant-garde Settings

· In right side, you will get Search option. Type SSO in search choice.

· Cheque the value of config.vpxd.sso.admin.uri

· This is your PSC Server.

Step ii: Check Existing Self-Signed Certificate Status

· Login to PSC server using Web Customer. (https://vi-psc-01/psc)

· Nether Certificates tab, Click on Certificate Shop > At correct console under, driblet downward Store > Select TRUSTED_ROOTS. All existing certificates will exist in this list.

· Select Certificate and Click on Show Details. You can run into that certificate is not valid.

Step 3: Check Threshold for Document Elapse Notification

Now yous might have question that if above certificate is valid till February 08, so why its showing error notification now (twenty^thursday Jan – in our case)?

This is considering of threshold value set for the notification. When this threshold is reached, the vCenter Server system displays red alert about the certificates which is almost to expire.

· Login to vCenter Server. Click on vCenter Server > Configure > Avant-garde Settings > Check value for vpxd.cert.threshold

Step 4: Regenerate the VMCA Root Certificate with a new self-signed certificate

· Open up Putty and SSH to PSC server. Utilize root credentials to login.

login equally: root

VMware vCenter Server Appliance 6.5.0.32000

Blazon: VMware Platform Services Controller

root@half-dozen-psc-01'due south password:

Connected to service

* List APIs: "help api list"

* List Plugins: "help pi list"

* Launch BASH: "shell"

Command> shell

Shell access is granted to root

· Type below control to open document-manager for vCenter Server Apparatus(VCSA)

o root@vi-psc-01 [ ~ ]# /usr/lib/vmware-vmca/bin/certificate-director

· Select Option 4 to regenerate a new VMCA Root Document and supplant all certificates

o Option[1 to 8]: 4

o Do you wish to generate all certificates using configuration file : Option[Y/N] ? : Y

· Please provide valid SSO and VC priviledged user credential to perform certificate operations.

o Enter username [Administrator@vsphere.local]: administrator@vsphere.local

o Enter countersign:

· Please configure certool.cfg with proper values before proceeding to next footstep.

When inquire for values, you tin simply press ENTER key to get out default value for default Self-Signed certificate. However, if you want to use your own values, that's your selection as per requirement.

o Press Enter key to skip optional parameters or use Default value.

o Enter proper value for 'Land' [Default value : US] : United states

o Enter proper value for 'Proper noun' [Default value : CA] : CA

o Enter proper value for 'Organization' [Default value : VMware] : VMware

o Enter proper value for 'OrgUnit' [Default value : VMware Engineering science] : VMware Engineering

o Enter proper value for 'State' [Default value : California] : California

o Enter proper value for 'Locality' [Default value : Palo Alto] : Palo Alto

o Enter proper value for 'IPAddress' (Provide comma separated values for multiple IP addresses) [optional] : 127.0.0.ane

o Enter proper value for 'Email' [Default value : email@pinnacle.com] : email@acme.com

o Enter proper value for 'Hostname' (Provide comma separated values for multiple Hostname entries) [Enter valid Fully Qualified Domain Name(FQDN), For Example : instance.domain.com] : six-psc-01.vinsight.com

o Enter proper value for VMCA 'Name' : six-psc-01.vinsight.com

· You are going to regenerate Root Certificate and all other certificates using VMCA

o Continue operation : Option[Y/Due north] ? : Y

· End vCenter services using below command.

o root@vi-psc-01 [ ~ ]# service-command --stop –all

· Showtime vCenter services using below control.

o root@six-psc-01 [ ~ ]# service-control --start –all

Step v: Verify Certificate in PSC Server

· Login to PSC server using Web Client. (https://vi-psc-01/psc)

· Under Certificates tab, Click on Certificate Store > At right panel under, drib down Store > Select TRUSTED_ROOTS. All existing certificates volition exist in this list.

· Select Certificate and Click on Show Details. You can run into that certificate is valid.

Step 6: Enforce New Generated Certificate to all ESXi hosts

· Login to vCenter Server using Web Client.

· Click on each ESXi hosts > Configure > Certificate

· Click on Renew Option.

Thanks for visiting my profile. I am Pranay Jha, bring forth a total of 11+ years of all-encompassing experience with me in It sector for organizations from small business to big enterprises, wherein my current assignment I am associated with IBM as a Technical Solution Builder for Virtualization platform. I am vExpert x 3 (16/17/18), VCIX-DCV, VCAP5/6-DCD, VCAP5-DCA, VCP7-CMA, VCP5/6-DCV, VCA-DCV, VCA-Deject, VSP, VCE-CIA, MCITP, MCSE, MCSA(Messaging). I am also an Independent blogger and founder of http://vmwareinsight.com and https://cloudpathshala.com. I can be reached via e-mail at pranay1988jha@gmail.com or Directly Message via Contact Us form.

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Source: http://vmwareinsight.com/Articles/2020/1/5802978/Regenerate-Self-Signed-Certificate-in-vSphere-6-5