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Update instructions for upgrading NGINX Agent #648

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Update instructions for upgrading NGINX Agent
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57 changes: 30 additions & 27 deletions content/agent/installation-upgrade/upgrade.md
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Expand Up @@ -12,9 +12,7 @@ type:

Learn how to upgrade NGINX Agent.

## Upgrade NGINX Agent from version v2.31.0 or greater

{{< note >}} Starting from version v2.31.0, NGINX Agent will automatically restart itself during an upgrade. {{< /note >}}
## Upgrade NGINX Agent

To upgrade NGINX Agent, follow these steps:

Expand All @@ -41,43 +39,48 @@ To upgrade NGINX Agent, follow these steps:
sudo apt-get install -y --only-upgrade nginx-agent -o Dpkg::Options::="--force-confold"
```

## Upgrade NGINX Agent to a Specific Version

To upgrade NGINX Agent to a specific **v2.x version**, follow these steps:

## Upgrade NGINX Agent from a version less than v2.31.0

To upgrade NGINX Agent, take the following steps:
#### Steps to Upgrade:

1. Open an SSH connection to the server where you’ve installed NGINX Agent and log in.
1. Open an SSH connection to the server running NGINX Agent and log in.

1. Make a backup copy of the following locations to ensure that you can successfully recover if the upgrade has issues:
1. Back up the following files and directories to ensure you can restore the environment in case of issues during the upgrade:

- `/etc/nginx-agent`
- `config_dirs` values for any configuration specified in `/etc/nginx-agent/nginx-agent.conf`

1. Stop NGINX Agent:
- Any `config_dirs` directory specified in `/etc/nginx-agent/nginx-agent.conf`.

```shell
sudo systemctl stop nginx-agent
```

1. Install the updated version of NGINX Agent:

- CentOS, RHEL, RPM-Based
1. Perform the version-controlled upgrade.

- Debian, Ubuntu, Deb-Based

```shell
sudo yum -y makecache
sudo yum update -y nginx-agent
sudo apt-get update
sudo apt-get install -y nginx-agent=<specific-version> -o Dpkg::Options::="--force-confold"
```

- Debian, Ubuntu, Deb-Based

Example (to upgrade to version 2.41.1~noble):
```shell
sudo apt-get update
sudo apt-get install -y --only-upgrade nginx-agent -o Dpkg::Options::="--force-confold"
sudo apt-get install -y nginx-agent=2.41.1~noble -o Dpkg::Options::="--force-confold"
```

1. Start NGINX Agent:
- CentOS, RHEL, RPM-Based

```shell
sudo yum install -y nginx-agent-<specific-version>
```

Example (to upgrade to version `2.41.1`):

```shell
sudo yum install -y nginx-agent-2.41.1
```

1. Verify the installed version:

```shell
sudo systemctl start nginx-agent
sudo nginx-agent --version
```
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