Updating Passwords in Vault

This guide demonstrates the process of updating the passwords in the Vault.

Step 1: Log In To the Vault

To update the secret in vault, follow below steps

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kubectl -n vault exec -it vault-0 -- sh

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vault login

Input the token that was generated during the vault initialization to login.

Step 2: Patch the Secret In the Vault

Use the following command to update the value in the secret.

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vault kv patch secret/<secret name> <key>=<value>

an example is given below:-

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vault kv patch secret/postgresql postgres-password=postgresql464
/ $ vault kv patch secret/postgresql postgres-password=postgresql464
===== Secret Path =====
secret/data/postgresql

======= Metadata =======
Key                Value
---                -----
created_time       2024-09-16T08:49:51.954215622Z
custom_metadata    <nil>
deletion_time      n/a
destroyed          false
version            2

Step 2: Reflect The Changes In Namespace

Changes in the secret will be reflected by following these steps:-

Delete the secret in namespace:-

Follow this command to delete secret:-

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kubectl get secret -n <namespace>
kubectl delete secret -n <namespace> <secret-name>

Example is given below:-

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kubectl get secret -n ef-external
root@efcx:~# kubectl get secrets -n ef-external
NAME                                  TYPE                             DATA   AGE
ef-postgresql-crt                     kubernetes.io/tls                3      3d9h
expertflow-reg-cred                   kubernetes.io/dockerconfigjson   1      3d9h
minio                                 Opaque                           2      3d9h
minio-crt                             kubernetes.io/tls                3      3d9h
mongo-mongodb-ca                      Opaque                           3      3d9h
mongodb                               Opaque                           1      3d9h
postgresql                            Opaque                           2      3d9h
redis                                 Opaque                           1      3d9h
redis-crt                             kubernetes.io/tls                3      3d9h
sh.helm.release.v1.ef-postgresql.v1   helm.sh/release.v1               1      3d9h
sh.helm.release.v1.keycloak.v1        helm.sh/release.v1               1      3d9h
sh.helm.release.v1.minio.v1           helm.sh/release.v1               1      3d9h
sh.helm.release.v1.mongo.v1           helm.sh/release.v1               1      3d9h
sh.helm.release.v1.redis.v1           helm.sh/release.v1               1      3d9h
vault-external                        Opaque                           2      3d9h

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kubectl delete secret -n ef-external postgresql

root@efcx:~# kubectl delete secret -n ef-external postgresql
secret "postgresql" deleted

Restart Pods in the namespace:-

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kubectl get pod -n ef-external
root@efcx:~# k get pods -n ef-external
NAME                     READY   STATUS    RESTARTS       AGE
ef-amq-0                 1/1     Running   1 (122m ago)   7h31m
ef-postgresql-0          0/1     Unknown   0              34h
keycloak-0               0/1     Unknown   0              34h
minio-84cfcdbd48-8n6g2   0/1     Unknown   0              34h
mongo-mongodb-0          0/1     Unknown   0              34h
redis-master-0           0/1     Unknown   0              34h

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kubectl delete pod -n ef-external ef-postgresql-0
root@efcx:~# k delete pod -n ef-external ef-postgresql-0
pod "ef-postgresql-0" deleted

Pods will now be using the updated secrets.