Skip to main content
Version: 3.5.0

Environment Variables

Here we cover environment variables used to configure the Server, Agent and CLI.

note

Some configuration and/or startup options do not have environment variable equivalents. Use --help for additional parameters on the relevant CLI commands.

Server

Settings here apply to hotrod run server and hotrod run stand-alone. Options without environment variables are omitted:

CLI/Environment VariableDefaultDescription
--staging-dir
HOTROD_STAGING_DIR
~/.local/hotrodThe data/working directory
--auto-enrollment-key
HOTROD_AUTO_ENROLLMENT_KEY
noneThe shared secret for Agent enrollments
--bind-address
HOTROD_BIND_ADDRESS
127.0.0.1:3000The Server HTTP API will be served on this address and port. Use 0.0.0.0:3000 for all network interfaces
--disk-usage-max-percentage
HOTROD_DB_DISK_USE_MAX_PERCENT
80Logs and metric data will be removed when the staging directory volume exceeds this threshold
--jwt-expiry-mins
HOTROD_JWT_EXPIRY_MINS
60JWT expiry time in minutes
--jwt-psk
HOTROD_JWT_PSK
Auto-generatedPreshared JWT signing key
--log-retention-days
HOTROD_LOG_RETENTION_DAYS
30The maximum number of days that logs should be retained
--tls-cert
HOTROD_TLS_CERT
nonePath to TLS certificate file (if using TLS)
--tls-key
HOTROD_TLS_KEY
nonePath to TLS key (if using TLS)
--whitelist
HOTRODD_WHITELIST
noneAllow unauthenticated access to metrics/logs from these IP addresses
--auth-db
HOTROD_AUTH_DB
--staging-dirPath to authentication DB. The recommended default is best used
n/a
HOTROD_LICENSE
noneUsed to provide the Server with a license key. If present, it will override existing licenses on every startup

Agent

Settings here apply to Agents. Options without environment variables are omitted:

CLI/Environment VariableDefaultDescription
--hotrod-agent-api-key
HOTROD_AGENT_API_KEY
n/aAPI key for this Agent
--hotrod-agent-id
HOTROD_AGENT_ID
auto-generatedUnique ID. Used to identify this Agent
--hotrod-agent-listener
HOTROD_AGENT_LISTENER
127.0.0.1:4040
127.0.0.1:3040
Listening address for internal pipe-agent protocol.
Don't bind on external address!
Port 3040 by default on the Server's built-in Agent.
Otherwise 4040
--agent-api-bind-address
HOTROD_AGENT_API_BIND_ADDRESS
127.0.0.1:4041
127.0.0.1:3041
Listening address for new internal pipe-agent protocol.
Port 3041 by default on the Server's built-in Agent.
Otherwise 4041
--hotrod-agent-name
HOTROD_AGENT_NAME
n/aName for this Agent
--hotrod-url
HOTROD_URL
http://localhost:3000URL where the Server API can be reached
--auto-enrollment-key
HOTROD_AUTO_ENROLLMENT_KEY
n/aEnrollment secret if auto-enrollment is enabled on the Server
--pipes-dir
HOTROD_PIPES_DIR
n/aDirectory where pipes are stored, defaulting to user cache directory
--poll-interval
HOTROD_AGENT_POLL_INTERVAL
15Poll Server for updates at this interval (seconds). 0 disables updates
--metrics-interval
HOTROD_AGENT_METRICS_INTERVAL
60Send metrics to Server at this interval (seconds)
--logs-interval
HOTROD_AGENT_LOGS_INTERVAL
5Send logs to Server at this interval (seconds)
--tags
HOTROD_AGENT_TAGS
n/aTags to attach to Agent system information

CLI

Settings here apply to administrative commands. These commands are a CLI wrapper to the Server HTTP API:

Environment VariableDefaultDescription
HOTROD_URLhttp://localhost:3000Server URL