# Upgrading to 7.5

Upgrading NetObserv Flow Collector to version 7.5 requires installation changes only for Docker users. For Linux users, no changes are required.

### Linux (Debian/RPM) Installation

For Linux installations, no changes are required.

### Docker Installation

For Docker installations, an additional volume mount point has been added to support data persistence. This enables the NetObserv Flow Collector to retain its data across container restarts.

#### New Volume Mount Point

The following new volume mount point is required for Docker installation of the NetOberserv Flow Collector:

```yaml
/var/lib/elastiflow/flowcoll
```

This path is used by the container to persist data across container restarts.

#### Updating `docker-compose.yml`

When upgrading, update the `docker-compose.yml` file to include the new mount:

```yaml
volumes:
  - /path/on/host:/var/lib/elastiflow/flowcoll
```

Replace `/path/on/host` with the desired path on your host system where the data should be persisted.

For an example:

```yaml
volumes:
  - /var/lib/elastiflow/flowcoll:/var/lib/elastiflow/flowcoll
```

#### Setting Permissions

After adding the volume mount, ensure the directory on the host system has the correct permissions so the process inside the container can access it. Run the following commands, substituting `/path/on/host` with the actual path:

```bash
mkdir -p /path/on/host
chown -R 1000:1000 /path/on/host
chmod -R 755 /path/on/host
```

This ensures the container user (UID 1000) can read and write to the mounted path.


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