Step 3: Before you upgrade the Operating System to a new Major Version

My Environment

Fill in the following form to create a customized set of instructions for your environment.

Current Cloudera Manager Version

Host runs Database Server?

Database

Current Operating System

New Operating System

Refreshing ContentFill out the form above before you proceed. Content Updated

To share this environment with others, click the icon next to My Environment to copy a link specific for this environment to the clipboard.

7.13.1 7.11.3 7.7.3 7.7.1 7.6.7 7.6.1 7.4.4 7.3.1 7.1.9.1000 7.1.9 7.1.8 7.1.7.3000 7.1.7.2000 7.1.7.1000 7.1.7 7.1.6 7.3.1 7.1.9.1000 7.1.9 7.1.8 7.1.7.3000 7.1.7.2000 7.1.7.1000 7.1.7

This topic describes steps you must perform before upgrading the operating system on all hosts managed by Cloudera Manager.

Stop Running Clusters🔗

Log in to the Cloudera Manager Admin Console.
On the Home > Status tab, click the options menu to the right of each Cluster and select Stop to stop all the services in the cluster.
Do one of the following to stop the Cloudera Management Service:
- 1. Select Clusters > Cloudera Management Service.
  2. Select Actions > Stop.
- On the Home > Status tab, click the options menu to the right of Cloudera Management Service and select Stop.

Stop Cloudera Manager Server🔗

On the Cloudera Manager Server host, stop the Cloudera Manager Service by running the following command:
```
sudo systemctl stop cloudera-scm-server
```

Remove Packages & Parcels🔗

Packages and parcels for the older operating system will not be able to start on the new operating system. Perform the following steps on every host in the cluster:

Run the following command to remove old packages from the host:

RHEL / CentOS

sudo yum remove cloudera-manager-server cloudera-manager-daemons cloudera-manager-agent

sudo rm /etc/yum.repos.d/cloudera*manager.repo*

SLES

sudo zypper remove cloudera-manager-server cloudera-manager-daemons cloudera-manager-agent

sudo rm /etc/zypp/repos.d/cloudera*manager.repo*

Ubuntu

sudo apt-get remove cloudera-manager-server cloudera-manager-daemons cloudera-manager-agent

sudo rm /etc/apt/sources.list.d/cloudera*.list*

Remove old parcels from the host.

Empty the contents of the following directories. These are the defaults for parcel storage - if you use other directories, please change accordingly.
```
sudo rm -rf /opt/cloudera/parcels/*
```
```
sudo rm -rf /opt/cloudera/parcel-cache/*
```

Upgrade the Operating System🔗

Use the operating system upgrade procedures provided by your operating system vendor (for example: RedHat or Ubuntu) to download their software and perform the operating system upgrade.