Uninstall R Server on Linux to upgrade to a newer version

Article
05/01/2017

This article explains how to uninstall Microsoft R Server on Linux. Unless you are upgrading from 9.0.1 to the the latest version 9.1, upgrade requires that you first uninstall the existing deployment before installing a new distribution.

For 9.0.1-to-9.1, the install script automatically removes previous versions of R Server or Microsoft R Open 3.3.2 if they are detected so that setup can install newer versions.

Program version and file locations

As a first step, use your package manager to list the currently installed R Server packages. Typically, CentOS and Red Hat systems use yum, Ubuntu systems use apt-get, and SLES systems use zypper:

List the packages from Microsoft.
- On RHEL: yum list \*microsoft\*
- On Ubuntu: apt list --installed | grep microsoft
- On SUSE: zypper search \*microsoft-r\*
On a 9.1 installation, you will see about 9 packages. Since multiple major versions can coexist, the package list could be much longer. Given a list of packages, you can get verbose version information for particular packages in the list. The following examples are for Microsoft R Open version 3.3.3:
- On RHEL: rpm -qi microsoft-r-open-mro-3.3.x86_64
- On Ubuntu: dpkg --status microsoft-r-open-mro-3.3.x86_64
- On SUSE: zypper info microsoft-r-open-mro-3.3.x86_64

If R Server was installed on Cloudera using parcel installation, program information looks like this:

/opt/cloudera/parcels/MRO-3.3.3 and /opt/cloudera/parcels/MRS-9.0.1 (applies to 9.0.1)
/opt/cloudera/parcels/MRO-3.3.2 and /opt/cloudera/parcels/MRS-8.0.5 (applies to 8.0.5)
/opt/cloudera/parcels/MRO-3.2.2-1 and /opt/cloudera/parcels/MRS-8.0.0-1 (applies to 8.0)

General instructions for all versions

Packages are registered in a database that tracks all package installations in the cluster. To update the database, use a package manager to remove the package: yum for Red Hat and CentOS, apt for Ubuntu, or zypper for SUSE.

Log in as root or a user with sudo privileges. If you are using sudo, precede commands requiring root privileges with sudo.

The Revo64 program runs on demand so stopping and disabling the server is not required.

How to uninstall 9.x

Uninstall Microsoft R Open (MRO) and remove any dependent packages used only by MRO:
- On RHEL: yum erase microsoft-r-open-mro-3.3.x86_64
- On Ubuntu: apt-get purge microsoft-r-open-mro-3.3
- On SUSE: zypper remove microsoft-r-open-mro-3.3
Most packages are uninstalled, including Microsoft R Server. List the remaining packages to see what's left. On a 9.1. installation, you should see only those packages used for operationalizing R Server analytics. On a 9.0.1 install, you might see just mrsdeploy. Using the syntax from the previous step, uninstall remaining packages. For 9.1, uninstall packages in the following order:
- Microsoft-r-server-adminutil-9.1.x86_64
- Microsoft-r-server-webnode-9.1.x86_64
- Microsoft-r-server-computenode-9.1.x86_64
- Microsoft-r-server-config-rserve-9.1.x86_64
After packages are removed, you can remove remaining files. On the root node, verify the location of other files that need to be removed:
- $ ls /usr/lib64/microsoft-r
Remove the entire directory:
- $ rm -fr /usr/lib64/microsoft-r

RM removes the folder. Parameter "f" is for force and "r" for recursive, deleting everything under microsoft-r. This command is destructive and irrevocable, so be sure you have the correct directory before you press Enter.

How to uninstall 8.0.5

Uninstall Microsoft R Open (MRO) and remove any dependent packages used only by MRO:
```
 yum erase microsoft-r-server-mro-3.0
```
On the root node, verify the location of other files that need to be removed: `
```
 ls /usr/lib64/microsoft-r/8.0
```
Remove the entire directory:
```
 rm -fr /usr/lib64/microsoft-r
```

How to uninstall 8.0.0

Uninstall the Microsoft R Open for Microsoft R Server (MRO-for-MRS) package:
```
 yum erase MRO-for-MRS-8.0.0
```

Remove directories of MRS and MRO, in this order:

 rm -rf /usr/lib64/MRS-8.0       
 rm -rf /usr/lib64/MRO-for-MRS-8.0.0

Remove symlinks:

 rm -f /usr/bin/Revo64 /usr/bin/Revoscript

How to uninstall individual packages

If you remove Microsoft R Open (microsoft-r-server-mro-8.0-8.0.5-1.x86_64), you will also remove any dependent packages used only by R Open.

Uninstall order is important. Due to package dependencies, be sure to remove the packages in the order given below.

    rpm -e microsoft-r-server-packages-8.0-8.0.5-1.x86_64   
    rpm -e microsoft-r-server-intel-mkl-8.0-8.0.5-1.x86_64  
    rpm -e microsoft-r-server-mro-8.0-8.0.5-1.x86_64

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