Chapter 3. Installing Red Hat Application Stack

Chapter 3. Installing Red Hat Application Stack

Chapter 3. Installing Red Hat Application Stack

To install Red Hat Application Stack V.1.2:

If you have an existing database, back up your data and shut down the database:

If you are using PostgreSQL:
- Back-up your database. For example, run:
```
su -
rm -rf /tmp/pg.backup
su - postgres
/usr/bin/pg_dumpall > /tmp/pg.backup
exit
```
  Note
  
  If you have large objects in the database, you need to use pg_dump instead of pg_dumpall. See http://www.postgresql.org/docs/8.1/static/largeobjects.html and http://www.postgresql.org/docs/8.1/static/app-pg-dumpall.html
  
  For more information, see http://www.postgresql.org/docs/8.1/static/install-upgrading.html
If you are using MySQL:
- Backing-up your database is optional but recommended. Run as root:
```
mysqldump --all-databases -p > /tmp/mysqldumpfile.sql
```

Stop the daemons:

```
/sbin/service httpd stop
```
To shut down MySQL:
```
/sbin/service mysqld stop
```
To shut down PostgreSQL:
```
/sbin/service postgresql stop
```

Install the software:
- Option 1. To install from RHN, which is the preferable option to avoid dependency issues, run as root:
```
up2date --installall rhel-i386-as-4-appstk-1 --exclude jbossas-core --exclude jbossas-ejb3
```
  where rhel-i386-as-4-appstk-1 is the channel name for Red Hat Application Stack
  
  The channel names are as follows:
  
  rhel-arch-variant-4-appstk-1
  
  where:
  
  arch = i386 or x86_64 variant = as, or es
- Option 2. To install from RPMs on Disk:
  
  Follow the instructions in Section 2.2.2, “ Using up2date / DVD ” to mount the DVD and set up the local RHN channel (steps 1-3). Then as root run:
```
up2date --installall RedHat-Application-Stack-V1
```
  Note
  
  If you are upgrading from Stacks V.1.1, and have installed the jbossas-ejb3 package, before running the above command, you need to first remove jbossas-ejb3 manually by running as root:
```
rpm -e jbossas-ejb3
```
  Note
  
  You may need to install the following packages to satisfy dependencies before executing the above command, if they are not already installed:
  apr-devel
  
  apr-util-devel
  
  libc-client
  
  mx
  
  pcre-devel

Restore your database:

For PostgreSQL:

Move (or remove) the database directory:

mv /var/lib/pgsql/data /var/lib/pgsql/data.backup

Start the new PostgreSQL service:
```
/sbin/service postgresql start
```
Restore your data from back-up
```
psql -U username < /tmp/pg.backup
```
Start the http daemon:
```
/sbin/service httpd start
```

For MySQL:

Start MySQL:
```
/sbin/service mysqld start
```
Update MySQL:
```
mysql_upgrade
```
Restore your data:
```
mysql -p < /tmp/mysqldumpfile.sql
```
Start the http daemon:
```
/sbin/service httpd start
```

The installation is now complete.