Removing RUEI From Systems

H Removing RUEI From Systems

This appendix describes the procedure for uninstalling RUEI from Reporter and Collector systems.

To uninstall RUEI from each Reporter and Collector system, do the following:

Log in to the required system as the RUEI_USER user, and clear all crontab entries by running the following command:
```
echo "" | crontab
```
Stop all processing on the Reporter systems by running the following command as the RUEI_USER user:
```
project -stop
```
In the case of Collector systems, stop data collection by running the following command:
```
appsensor stop wg
```
Remove the installed RUEI RPMs by running the following command as the root user:
```
rpm -qa | grep ˆux- | xargs rpm -e
```
If parts of the installed RPMs were removed manually or corrupted, errors might be encountered in the above step. In this case, you should run the following command:
```
rpm -qa | grep ˆux- | xargs rpm -e --noscripts
```
Part of the installation may remain after running the above command.
On the Reporter system, unistall the php-oci8 module, Oracle database Instant client, PHP configuration, and SQLplus extension by running the following commands as the root user:
```
rm /etc/php.d/ruei.ini
rpm -e php-oci8-11gR2
rpm -e oracle-instantclient11.2-sqlplus
rpm -e oracle-instantclient11.2-basic
```
Ensure that all RUEI daemons are deactivated by running the following commands as the root user:
```
. /etc/ruei.conf
killall -u $RUEI_USER
```
Remove all RUEI data files by running the following commands as the root user:
```
rm -rf $RUEI_HOME
rm -rf $RUEI_DATA
```
Remove each database instance by logging into the required database server(s) as the oracle user, and running the following commands:
```
. /etc/ruei.conf
. oraenv
dbca -silent -deleteDatabase -sourceDB ${RUEI_DB_INST}
```
When prompted for the Oracle SID, you should specify the same value as that for the RUEI_DB_INST setting in the /etc/ruei.conf file.
For Reporter and Collector systems, remove the Java Runtime Environment (JRE) by running the following commands as the root user:
```
rm -fr /usr/java/jre1.8.0_241
rm -fr /usr/java/jre
```
On the Reporter system, edit the /etc/sysconfig/httpd file, and remove the following line that loads the RUEI environment:
```
source /etc/ruei.conf
```

Revert the changes made to user and group settings by running the following commands as the root user:

. /etc/ruei.conf
/usr/sbin/userdel $RUEI_USER
/usr/sbin/groupdel $RUEI_GROUP
/usr/sbin/usermod -G apache apache

Remove the RUEI configuration file /etc/ruei.conf running the following command as the root user:
```
rm /etc/ruei.conf
```

During the installation procedure, you may have installed several additional RPMs. Which of these can safely be removed depends on the original Linux installation. A database installation will remain on each database server. The procedure for uninstalling the Oracle database is fully described in the product documentation. See Removing Database Software for more information about database deinstallation.