Update content

Author: MikeRayMSFT

docs/linux/sql-server-linux-kubernetes-failover-job.md

@@ -27,12 +27,12 @@ After you run the job, delete it. This also delets Kubernetes logs. If you do no
 
 * `MSSQL_K8S_NEW_PRIMARY`
   * Optional
-  * **Description**: The target of the failover. Accepts the target SQL Server pod name, IP address, StatefulSet name, server name, or host name. Additionally the `!` prefix will prevent failover to a  specified target. Example `!sql-1`.
+  * **Description**: The target of the failover. Accepts the target SQL Server pod name, IP address, StatefulSet name, server name, or host name. Additionally the `!` prefix prevents failover to a  specified target. Example `!sql-1`.
 
 * `FORCE_FAILOVER_ALLOW_DATA_LOSS` 
   * Optional
   * **Description**: Boolean to force the failover with potential data loss.
 
 * `MSSQL_K8S_NAMESPACE`
   * Optional
-  * **Description**: Kubernetes namespace of the availability group
+  * **Description**: Kubernetes namespace of the availability group.

docs/linux/sql-server-linux-kubernetes-rotate-credentials.md

@@ -0,0 +1,45 @@
+---
+title: SQL Server Always On availability group Kubernetes rotate credentials environment variables
+description: This article explains the environment variables to rotate credentials for a SQL Server Kubernetes Always On availability group on Kubernetes.
+author: MikeRayMSFT
+ms.author: mikeray
+manager: craigg
+ms.date: 7/16/2018
+ms.topic: article
+ms.prod: sql
+ms.component: ""
+ms.suite: "sql"
+ms.custom: "sql-linux"
+ms.technology: linux
+---
+
+# SQL Server Always On availability group Kubernetes environment variables to rotate credentials
+
+Rotate credentials on a SQL Server Always On availability group in Kubernetes to update the SQL Server instance `sa` password, set a new master key password, or rotate the database mirroring endpoint certificates. 
+
+## Rotate credentials environment variables
+
+* `MSSQL_K8S_SA_PASSWORD`
+  * Required
+  * **Description**: The current `sa` password of the SQL Server instance.
+
+* `MSSQL_K8S_STATEFULSET_NAME `
+  * Required
+  * **Description**: The name of the SQL Server StatefulSet, the same as the custom resource name .
+
+* `MSSQL_K8S_NAMESPACE`
+  * Optional
+  * **Description**: Kubernetes namespace of the availability group.
+
+* `MSSQL_ROTATE_CERT` 
+  * Optional
+  * **Description**: Boolean to rotate the database mirroring endpoint certificate.
+
+* `MSSQL_K8S_MASTER_KEY_PASSWORD`
+  * Optional
+  * **Description**: The master key password.
+
+* `MSSQL_K8S_NEW_SA_PASSWORD`
+  * Optional
+  * **Description**: The new `sa` password the SQL Server instance. 
+