> ## Documentation Index > Fetch the complete documentation index at: https://docs-xcor.paloaltonetworks.com/llms.txt > Use this file to discover all available pages before exploring further. # Linux environment variables > Configure environment variables to use Palo Alto Networks Telemetry Pipeline on Linux. This information is for Palo Alto Networks Telemetry Pipeline, which is a standalone product separate from Palo Alto Networks Cortex XCOR. To [create a Core Instance](/ingest/pipeline/v2/install/create-instance) on Linux, you must configure the following environment variables. Palo Alto Networks Telemetry Pipeline provides these environment variables as part of the systemd service, using the `/opt/calyptia/etc/calyptia-custom.conf` file. | Name | Description | | - | - | | `CALYPTIA_CLOUD_PROJECT_TOKEN` | The token used to manage the Core Instance. | | `CALYPTIA_CORE_INSTANCE_NAME` | Optional: Sets a specific name, otherwise selects a random name. | | `CALYPTIA_CORE_INSTANCE_NAME_PREFIX` | Optional: The prefix to use for a randomly generated Core Instance name. | | `CALYPTIA_CLOUD_URL` | The URL of the Palo Alto Networks Telemetry Pipeline backend. Default: `cloud-api.calyptia.com`. | | `CALYPTIA_CORE_ADDITIONAL_FLAGS` | Optional: Custom flags to assign to the Core Instance. These arguments are passed to [Pipeline CLI](/ingest/pipeline/pipeline-cli) when creating the Core Instance. | ## Related topics - [Create a Core Instance](/ingest/pipeline/v2/install/create-instance.md) - [Discover Kubernetes scrape targets with the CXDOT Collector](/ingest/xcor/collector/discover/kubernetes.md) - [Chronosphere Collector optimizations](/ingest/metrics-traces/collector/configure/optimizations.md) - [Troubleshoot Palo Alto Networks Telemetry Pipeline installations on Linux](/ingest/pipeline/v2/install/troubleshooting.md) - [Install the CXDOT Collector on Linux](/ingest/xcor/collector/install/linux.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.