> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/resilience-testing/chaos-testing/infrastructure/linux/upgrade.md).

# Upgrade Linux infrastructure

Run the commands on the VM where the Linux chaos infrastructure is installed. The path differs between SaaS and self-managed platform (SMP).

### SaaS <a href="#saas" id="saas"></a>

1. Fetch `INFRA_ID` and `ACCESS_KEY` from the existing config:

   ```bash
   INFRA_ID=$(sed -n 's/^infraID: "\(.*\)"/\1/p' /etc/linux-chaos-infrastructure/config.yaml)
   ACCESS_KEY=$(sed -n 's/^accessKey: "\(.*\)"/\1/p' /etc/linux-chaos-infrastructure/config.yaml)
   ```
2. Uninstall the current version:

   ```bash
   /etc/linux-chaos-infrastructure/uninstall.sh
   ```
3. Install the new version. Get the binary URL from the Linux infrastructure page in the Harness UI, then run:

   ```bash
   sudo https://app.harness.io/public/shared/tools/chaos/linux/1.50.0/install.sh \
     | bash /dev/stdin \
       --infra-id "$INFRA_ID" \
       --access-key "$ACCESS_KEY" \
       --server-url https://<YOUR_IP>/chaos/lserver/api
   ```

   Replace `1.50.0` with the target version and `<YOUR_IP>` with your cluster address.

### SMP <a href="#smp" id="smp"></a>

1. Raise a [Harness support](https://support.harness.io) ticket to get the `offline-linux-installer` tarball.
2. Copy and extract the tarball on the target VM, then `cd` into the extracted directory.
3. Fetch `INFRA_ID` and `ACCESS_KEY` from the existing config:

   ```bash
   INFRA_ID=$(sed -n 's/^infraID: "\(.*\)"/\1/p' /etc/linux-chaos-infrastructure/config.yaml)
   ACCESS_KEY=$(sed -n 's/^accessKey: "\(.*\)"/\1/p' /etc/linux-chaos-infrastructure/config.yaml)
   ```
4. Uninstall the current version with `/etc/linux-chaos-infrastructure/uninstall.sh`.
5. Install the new version:

   ```bash
   sudo ./install.sh \
     --infra-id "$INFRA_ID" \
     --access-key "$ACCESS_KEY" \
     --server-url https://<YOUR_IP>/chaos/lserver/api
   ```

This same command works in air-gapped environments once the installer is on the VM.