Replace Solution User Certificates (Intermediate CA)

After you replace the machine SSL certificates, you can replace the solution user certificates.

Many VMware customers do not replace solution user certificates. They replace only the machine SSL certificates with custom certificates. This hybrid approach satisfies the requirements of their security teams.

Certificates either sit behind a proxy, or they are custom certificates.
No intermediate CAs are used.

You replace the machine solution user certificate and the solution user certificate on each vCenter Server system.

Note: When you list solution user certificates in large deployments, the output of /usr/lib/vmware-vmafd/bin/dir-cli list includes all solution users from all nodes. Run /usr/lib/vmware-vmafd/bin/vmafd-cli get-machine-id --server-name localhost to find the local machine ID for each host. Each solution user name includes the machine ID.

Prerequisites

Each solution user certificate must have a different Subject. Consider, for example, including the solution user name (such as vpxd) or other unique identifier.

Procedure

Make one copy of certool.cfg, remove the Name, IP address, DNS name, and email fields, and rename the file, for example, to sol_usr.cfg.
You can name the certificates from the command line as part of generation. The other information is not needed for solution users. If you leave the default information, the certificates that are generated are potentially confusing.
Generate a public/private key file pair and a certificate for each solution user, passing in the configuration file that you just customized.
For example:
```
certool --genkey --privkey=vpxd.priv --pubkey=vpxd.pub
certool --gencert --privkey=vpxd.priv --cert vpxd.crt --Name=VPXD_1 --config sol_usr.cfg
```
Find the name for each solution user.
```
/usr/lib/vmware-vmafd/bin/dir-cli service list 
```
You can use the unique ID that is returned when you replace the certificates. The input and output might look as follows.
```
/usr/lib/vmware-vmafd/bin/dir-cli service list
Enter password for [email protected]:
1. machine-623bef28-0311-436e-b21f-6e0d39aa5179
2. vsphere-webclient-623bef28-0311-436e-b21f-6e0d39aa5179
3. vpxd-623bef28-0311-436e-b21f-6e0d39aa5179
4. vpxd-extension-623bef28-0311-436e-b21f-6e0d39aa5179
5. hvc-623bef28-0311-436e-b21f-6e0d39aa5179
6. wcp-1cbe0a40-e4ce-4378-b5e7-9460e2b8200e
```
In a deployment of multiple vCenter Server instances connected in Enhanced Linked Mode configuration, the output of /usr/lib/vmware-vmafd/bin/dir-cli service list includes all solution users from all nodes. Run /usr/lib/vmware-vmafd/bin/vmafd-cli get-machine-id --server-name localhost to find the local machine ID for each host. Each solution user name includes the machine ID.

Stop all services and start the services that handle certificate creation, propagation, and storage.

service-control --stop --all
service-control --start vmafdd
service-control --start vmdird
service-control --start vmcad

Replace the existing certificate in vmdir and then in VECS.
For solution users, you must add the certificates in that order. For example:
```
dir-cli service update --name <vpxd-xxxx-xxx-7c7b769cd9f4> --cert ./vpxd.crt
vecs-cli entry delete --store vpxd --alias vpxd
vecs-cli entry create --store vpxd --alias vpxd --cert vpxd.crt --key vpxd.priv
```
Note: Solution users cannot log in to vCenter Single Sign-On if you do not replace the certificate in vmdir.
Restart all services.
```
service-control --start --all
```

Example: Replacing Solution User Certificates (Intermediate CA)

Generate a public/private key pair for each solution user on each vCenter Server node in an Enhanced Linked Mode configuration. That includes a pair for the machine solution and a pair for each additional solution user (vpxd, vpxd-extension, vsphere-webclient, wcp).
1. Generate a key pair for the machine solution user.
```
/usr/lib/vmware-vmca/bin/certool --genkey --privkey=machine-key.priv --pubkey=machine-key.pub
```
2. Generate a key pair for the vpxd solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --genkey --privkey=vpxd-key.priv --pubkey=vpxd-key.pub
```
3. Generate a key pair for the vpxd-extension solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --genkey --privkey=vpxd-extension-key.priv --pubkey=vpxd-extension-key.pub
```
4. Generate a key pair for the vsphere-webclient solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --genkey --privkey=vsphere-webclient-key.priv --pubkey=vsphere-webclient-key.pub
```
5. Generate a key pair for the wcp solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --genkey --privkey=wcp-key.priv --pubkey=wcp-key.pub
```
Generate solution user certificates that are signed by the new VMCA root certificate for the machine solution user and for each additional solution user (vpxd, vpxd-extension, vsphere-webclient, wcp) on each vCenter Server node.
Note: The --Name parameter has to be unique. Including the name of the solution user store name makes it easy to see which certificate maps to which solution user. The example includes the name, for example vpxd or vpxd-extension in each case.
1. Make one copy of the /usr/lib/vmware-vmca/share/config/certool.cfg file, then modify or remove the Name, IP address, DNS name, and email fields as required, and rename the file, for example, to sol_usr.cfg.
2. Generate a certificate for the machine solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --gencert --cert=new-machine.crt --privkey=machine-key.priv --Name=machine --config sol_usr.cfg
```
3. Generate a certificate for the vpxd solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --gencert --cert=new-vpxd.crt --privkey=vpxd-key.priv --Name=vpxd --config sol_usr.cfg
```
4. Generate a certificate for the vpxd-extensions solution user on each node.
```
/usr/lib/vmware-vmca/bin/certool --gencert --cert=new-vpxd-extension.crt --privkey=vpxd-extension-key.priv --Name=vpxd-extension --config sol_usr.cfg
```
5. Generate a certificate for the vsphere-webclient solution user on each node by running the following command.
```
/usr/lib/vmware-vmca/bin/certool --gencert --cert=new-vsphere-webclient.crt --privkey=vsphere-webclient-key.priv --Name=vsphere-webclient --config sol_usr.cfg
```
6. Generate a certificate for the wcp solution user on each node by running the following command.
```
/usr/lib/vmware-vmca/bin/certool --gencert --cert=new-wcp.crt --privkey=wcp-key.priv --Name=wcp --config sol_usr.cfg
```

Replace the solution user certificates in VECS with the new solution user certificates.

Note: The --store and --alias parameters have to exactly match the default names for services.

Replace the machine solution user certificate on each node:

/usr/lib/vmware-vmafd/bin/vecs-cli entry delete --store machine --alias machine
/usr/lib/vmware-vmafd/bin/vecs-cli entry create --store machine --alias machine --cert new-machine.crt --key machine-key.priv

Replace the vpxd solution user certificate on each node.

/usr/lib/vmware-vmafd/bin/vecs-cli entry delete --store vpxd --alias vpxd
/usr/lib/vmware-vmafd/bin/vecs-cli entry create --store vpxd --alias vpxd --cert new-vpxd.crt --key vpxd-key.priv

Replace the vpxd-extension solution user certificate on each node.

/usr/lib/vmware-vmafd/bin/vecs-cli entry delete --store vpxd-extension --alias vpxd-extension
/usr/lib/vmware-vmafd/bin/vecs-cli entry create --store vpxd-extension --alias vpxd-extension --cert new-vpxd-extension.crt --key vpxd-extension-key.priv

Replace the vsphere-webclient solution user certificate on each node.

/usr/lib/vmware-vmafd/bin/vecs-cli entry delete --store vsphere-webclient --alias vsphere-webclient
/usr/lib/vmware-vmafd/bin/vecs-cli entry create --store vsphere-webclient --alias vsphere-webclient --cert new-vsphere-webclient.crt --key vsphere-webclient-key.priv

Replace the wcp solution user certificate on each node.

/usr/lib/vmware-vmafd/bin/vecs-cli entry delete --store wcp --alias wcp
/usr/lib/vmware-vmafd/bin/vecs-cli entry create --store wcp --alias wcp --cert new-wcp.crt --key wcp-key.priv

Update VMware Directory Service (vmdir) with the new solution user certificates. You are prompted for a vCenter Single Sign-On administrator password.
1. Run /usr/lib/vmware-vmafd/bin/dir-cli service list to get the unique service ID suffix for each solution user. You run this command on a vCenter Server system.
```
/usr/lib/vmware-vmafd/bin/dir-cli service list
output:
1. machine-623bef28-0311-436e-b21f-6e0d39aa5179
2. vsphere-webclient-623bef28-0311-436e-b21f-6e0d39aa5179
3. vpxd-623bef28-0311-436e-b21f-6e0d39aa5179
4. vpxd-extension-623bef28-0311-436e-b21f-6e0d39aa5179
5. hvc-623bef28-0311-436e-b21f-6e0d39aa5179
6. wcp-1cbe0a40-e4ce-4378-b5e7-9460e2b8200e
```
  Note: When you list solution user certificates in large deployments, the output of /usr/lib/vmware-vmafd/bin/dir-cli list includes all solution users from all nodes. Run /usr/lib/vmware-vmafd/bin/vmafd-cli get-machine-id --server-name localhost to find the local machine ID for each host. Each solution user name includes the machine ID.
2. Replace the machine certificate in vmdir on each vCenter Server node. For example, if machine-6fd7f140-60a9-11e4-9e28-005056895a69 is the machine solution user on the vCenter Server, run this command:
```
/usr/lib/vmware-vmafd/bin/dir-cli service update --name machine-6fd7f140-60a9-11e4-9e28-005056895a69 --cert new-machine.crt
```
3. Replace the vpxd solution user certificate in vmdir on each node. For example, if vpxd-6fd7f140-60a9-11e4-9e28-005056895a69 is the vpxd solution user ID, run this command:
```
/usr/lib/vmware-vmafd/bin/dir-cli service update --name vpxd-6fd7f140-60a9-11e4-9e28-005056895a69 --cert new-vpxd.crt
```
4. Replace the vpxd-extension solution user certificate in vmdir on each node. For example, if vpxd-extension-6fd7f140-60a9-11e4-9e28-005056895a69 is the vpxd-extension solution user ID, run this command:
```
/usr/lib/vmware-vmafd/bin/dir-cli service update --name vpxd-extension-6fd7f140-60a9-11e4-9e28-005056895a69 --cert new-vpxd-extension.crt
```
5. Replace the vsphere-webclient solution user certificate on each node. For example, if vsphere-webclient-6fd7f140-60a9-11e4-9e28-005056895a69 is the vsphere-webclient solution user ID, run this command:
```
/usr/lib/vmware-vmafd/bin/dir-cli service update --name vsphere-webclient-6fd7f140-60a9-11e4-9e28-005056895a69 --cert new-vsphere-webclient.crt
```
6. Replace the wcp solution user certificate on each node. For example, if wcp-1cbe0a40-e4ce-4378-b5e7-9460e2b8200e is the wcp solution user ID, run this command:
```
/usr/lib/vmware-vmafd/bin/dir-cli service update --name wcp-1cbe0a40-e4ce-4378-b5e7-9460e2b8200e --cert new-wcp.crt
```