## Backups
Take backups (snapshots of all disks), prior to carrying out this work, as there is a risk of data loss.
## Disable access to the site
Stop httpd on both web servers:
```
sudo systemctl stop httpd
```
## Upgrade process for web 1
Su to root:
```
su root
```
Stop the services:
```
sudo systemctl stop glusterd
```
Kill any running processes:
```
killall glusterfs glusterfsd glusterd
```
Unmount the drives:
```
umount /mnt/gluster/gvol0
```
Remove any centos release gluster repos:
```
yum remove centos-release-gluster*
```
Remove glusterfs
```
yum remove glusterfs*
```
Install version 7.0
```
yum install centos-release-gluster7
yum install glusterfs glusterfs-fuse glusterfs-server
```
Start and enable gluster
```
sudo systemctl start glusterd.service
sudo systemctl enable glusterd.service
```
Finally, mount the drive:
```
sudo mount -a
```
## Repeat the process above for web 2
See notes int he section above
## Final checks
Check gluster status
```
gluster volume status
```
Check version
```
gluster —version
```
Start httpd to allow access
```
systemctl start httpd
```
Check everything is working as expected by logging into Claromentis, download a file from the DMS (which require the data directory)