# Core Billing

### Backup the current version artifacts

* Stop the Billing agent service
* Take a back up of the Billing agent service and API config file
  * API - C:\inetpub\MgmtSvc-CloudAssertBilling\bin\Web.config
  * Agent config file - C:\Program Files\CloudAssertBilling\CloudAssert.WAP.Billing.AgentService\CloudAssert.WAP.Billing.AgentService.exe.config
* Back up the Templates from C:\inetpub\MgmtSvc-CloudAssertBilling\Templates and C:\Program Files\CloudAssertBilling\CloudAssert.WAP.Billing.AgentService\Templates
* Back up the Billing database

### Install the new build

* Make sure IIS\_USR has access to the “C:\inetpub\MgmtSvc-CloudAssertBilling” folder
* Uninstall the existing version of the Billing agent service and API
* Install the latest Billing API
* Install latest Billing Agent
* Stop the Billing Agent
* Replace the respective backed up templates to C:\inetpub\MgmtSvc-CloudAssertBilling\Templates and C:\Program Files\CloudAssertBilling\CloudAssert.WAP.Billing.AgentService\Templates
* Refer the previous version's of the API and Agent config file and change the current ones
* Update the billing database using Billing Tool

```
BILLING.EXE UpdateDatabase /ApiEndpoint:fillHere /Username:fillHere /Password:fillHere
```

* Start the agent service

### Post-deployment validation

* Check for the version details in the About Page in Admin Portal, it should have the latest versions installed
* Make sure all the pages loaded properly in Admin and Tenant portal