Refresh Cluster CA

The cluster CA cannot be rotated without an upgrade to LTS2. On LTS1, the only way is to adjust the TTL of the certs that the CA signs to be less than the expiry of the CA.

Please run the following steps inside the DU VM as root:

Open /etc/pf9-vault.d/server-config.hcl . It would look something like below:

storage "mysql" {

    database = "qbert"

    table = "vault"

    username = "qbert"

    password = "*************"

    address = "localhost:3306"

}

​

listener "tcp" {

    address = "localhost:8200"

    tls_disable = 1

}

​

default_lease_ttl = "26280h"

max_lease_ttl = "26280h"

Adjust the default_lease_ttl and max_lease_ttl to a time lesser than remaining CA time.

Once this is done, restart the pf9-vault service:

systemctl restart pf9-vault

After the vault service is restarted on the DU, the nodelet phases needs to be restarted on all nodes to generate new certificates with the updated TTL value.

Given that this involves a stack restart - workloads will be affected. Please run this within a maintenance window.

Run this command on all nodes:

systemctl stop pf9-hostagent pf9-nodeletd

/opt/pf9/nodelet/nodeletd phases restart --regen-certs

systemctl start pf9-hostagent