--- title: Linux or macOS --- :::important This documentation page applies to deploying your own open source ClearML Server. It does not apply to ClearML Hosted Service users. :::
Important: Upgrading from v0.14 or older
For Linux only, if upgrading from Trains Server v0.14 or older, configure the ClearML Agent Services. * If ``CLEARML_HOST_IP`` is not provided, then **ClearML Agent Services** will use the external public address of the **ClearML Server**. * If ``CLEARML_AGENT_GIT_USER`` / ``CLEARML_AGENT_GIT_PASS`` are not provided, then **ClearML Agent Services** will not be able to access any private repositories for running service tasks. export CLEARML_HOST_IP=server_host_ip_here export CLEARML_AGENT_GIT_USER=git_username_here export CLEARML_AGENT_GIT_PASS=git_password_here :::note For backwards compatibility, the environment variables ``TRAINS_HOST_IP``, ``TRAINS_AGENT_GIT_USER``, and ``TRAINS_AGENT_GIT_PASS`` are supported. :::

**To upgrade ClearML Server Docker deployment:** 1. Shutdown **ClearML Server**. Execute the following command (which assumes the configuration file is in the environment path). docker-compose -f docker-compose.yml down 1. If upgrading from **Trains Server** version 0.15 or older to **ClearML Server**, a data migration is required before upgrading. First follow these [data migration instructions](clearml_server_es7_migration.md), and then continue this upgrade. 1. We recommend [backing up data](clearml_server_linux_mac.md#backing-up-and-restoring-data-and-configuration) and, if the configuration folder is not empty, backing up the configuration. 1. If upgrading from **Trains Server** to **ClearML Server**, rename `/opt/trains` and its subdirectories to `/opt/clearml`. sudo mv /opt/trains /opt/clearml 1. Download the latest `docker-compose.yml` file. curl https://raw.githubusercontent.com/allegroai/clearml-server/master/docker/docker-compose.yml -o /opt/clearml/docker-compose.yml 1. Startup **ClearML Server**. This automatically pulls the latest **ClearML Server** build. docker-compose -f /opt/clearml/docker-compose.yml pull docker-compose -f /opt/clearml/docker-compose.yml up -d If issues arise during your upgrade, see the FAQ page, [How do I fix Docker upgrade errors?](../faq.md#common-docker-upgrade-errors).