Configuring ECK

ECK can be configured using either command line flags or environment variables.

Flag	Default	Description
`auto-port-forward`	`false`	Enables automatic port forwarding to allow running the operator outside the cluster. For dev use only as it exposes k8s resources on ephemeral ports to localhost.
`ca-cert-rotate-before`	`24h`	Duration representing how long before expiration CA certificates should be re-issued.
`ca-cert-validity`	`8760h`	Duration representing the validity period of a generated CA certificate.
`cert-rotate-before`	`24h`	Duration representing how long before expiration TLS certificates should be re-issued.
`cert-validity`	`8760h`	Duration representing the validity period of a generated TLS certificate.
`debug-http-listen`	`localhost:6060`	Listen address for the debug HTTP server. Only available in development mode.
`development`	`false`	Enable developmenet mode. Only available as a CLI flag.
`log-verbosity`	`0`	Verbosity level of logs. `-2`=Error, `-1`=Warn, `0`=Info, `0` and above=Debug
`manage-webhook-certs`	`true`	Enables automatic webhook certificate management.
`metrics-port`	`0`	Prometheus metrics port. Set to 0 to disable the metrics endpoint.
`namespaces`	`""`	Namespaces in which this operator should manage resources. Accepts multiple comma-separated values. Defaults to all namespaces if empty or unspecified.
`operator-namespace`	`""`	Namespace the operator runs in. Required.
`operator-roles`	`all`	Roles this operator should assume. Valid values are `namespace`, `global`, `webhook` or `all`. Accepts multiple comma separated values.
`webhook-pods-label`	`""`	Label used to select pods running the webhook server.
`webhook-secret`	`""`	Kubernetes secret containing the webhook certificates.

Unless noted otherwise, environment variables can be used instead of flags to configure the operator as well. Simply convert the flag name to upper case and replace any dashes (-) with underscores (_). For example, the log-verbosity flag can be set by an environment variable named LOG_VERBOSITY.

Duration values should be specified as numeric values suffixed by the time unit. For example, a duration of 10 hours should be specified as 10h. Acceptable time unit suffixes are:

Suffix	Unit
`ms`	Milliseconds
`s`	Seconds
`m`	Minutes
`h`	Hours

Edit the elastic-operator StatefulSet to change any of the flag values. Enable ECK debug logs illustrates how to change the log level of the operator using this method.

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