Docker
This guide walks you through installing the Infrastructure Agent (Infra Agent) on a machine deployed through Docker. These instructions can also be found on the Installation page in the Middleware application.
The Docker Infra Agent is a containerized version of the Infra Agent. Upon installation, the Infra Agent collects host level details from host network mode and uses volume binding for reading logs.
Install
Step 1: Access Docker Installation
Log in to Middleware, navigate to the Installation Page in the bottom left corner and select Docker from the Infrastructure section
Step 2: Run Docker Install Command
Copy and run the installation command. Copy the command directly from the Installation page to ensure your API key and UID are correct
MW_API_KEY="<MW_API_KEY>" MW_TARGET=https://<MW_UID>.middleware.io:443 bash -c "$(curl -L https://install.middleware.io/scripts/docker-install.sh)"
Step 3: Add Host Tags [Optional]
Create filterable custom tags by adding the MW_HOST_TAGS environment variable to the installation command as comma-separated key-value pairs. Use the tag name to create an alias for the host (e.g. production).
Check your host tags have been embedded by navigating to Infrastructure -> Your Desired Host -> System Information
MW_HOST_TAGS=key1:value1,key2:value2,... MW_API_KEY="<MW_API_KEY>"
Step 4: Verify Installation
Verify the status of the Infra Agent. If status is UP or Exited, the installation was successful. If status is blank, installation was unsuccessful. Run the following command to verify the Infra Agent status:
Shell
docker ps -a --filter ancestor=ghcr.io/middleware-labs/mw-host-agent:master
Step 5: Check Your Dashboard
Navigate to Middleware and ensure metrics are appearing in the Unified Dashboard. It can take up to a few minutes for metrics to appear. If metrics do not appear after this time head to our troubleshooting page for some common issues.
Troubleshooting
Run only one Infra Agent per host. Multiple agents will cause unexpected behavior.
Once the Infra Agent is installed metrics should appear in the Middleware Application within a few minutes. If metrics do not appear, confirm that the machine has access to the internet, either directly or through a proxy, and that only one Infra Agent per container is running.
Uninstall
To uninstall the Infra Agent use the following commands:
Shell
docker stop `docker ps -a -q --filter ancestor=ghcr.io/middleware-labs/mw-host-agent:master` docker rm `docker ps -a -q --filter ancestor=ghcr.io/middleware-labs/mw-host-agent:master`
Need assistance or want to learn more about Middleware? Contact our support team in Slack.