Instantiating a Cloudera Manager Image

Complete the following steps to create a new Cloudera Manager instance from a virtual machine image.

Instantiate the Cloudera Manager image.
If the Cloudera Manager database will be hosted on a remote host, also instantiate the database host image.
Ensure that the cloudera-scm-server service is not running by running the following command on the Cloudera Manager host:
```
service cloudera-scm-server status
```
If it is running, stop it using the following command:
```
service cloudera-scm-server stop
```
On the Cloudera Manager host, create a file named uuid in the /etc/cloudera-scm-server directory. Add a globally unique identifier to this file using the following command:
```
cat /proc/sys/kernel/random/uuid > /etc/cloudera-scm-server/uuid
```
The existence of this file informs Cloudera Manager to reinitialize its own unique identifier when it starts.
Run the following command to start the Cloudera Manager service:
```
service cloudera-scm-server start
```
Run the following command to enable automatic restart for the cloudera-scm-server:
- RHEL 7.x /CentOS 7.x.x:
```
systemctl enable cloudera-scm-server.service
```
- Ubuntu:
```
update-rc.d -f cloudera-scm-server defaults
```