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Version: 0.26

Configuration

Introduction#

Operate is a Spring Boot application. That means all ways to configure a Spring Boot application can be applied. By default the configuration for Operate is stored in a YAML file application.yml. All Operate related settings are prefixed with camunda.operate. The following parts are configurable:

Configurations#

Webserver#

Operate supports customizing the context-path by using default spring configuration.

Example for application.yml: server.servlet.context-path: /operate

Example for environment variable: SERVER_SERVLET_CONTEXT_PATH=/operate

Default context-path is /

Elasticsearch#

Operate stores and reads data in/from Elasticsearch.

Settings to connect#

Operate supports basic authentication for elasticsearch. Set the appropriate username/password combination in the configuration to use it.

Either set host and port (deprecated) or url (recommended)

NameDescriptionDefault value
camunda.operate.elasticsearch.clusterNameClustername of Elasticsearchelasticsearch
camunda.operate.elasticsearch.hostHostname where Elasticsearch is runninglocalhost
camunda.operate.elasticsearch.portPort of Elasticsearch REST API9200
camunda.operate.elasticsearch.urlURL of Elasticsearch REST APIhttp://localhost:9200
camunda.operate.elasticsearch.usernameUsername to access Elasticsearch REST API-
camunda.operate.elasticsearch.passwordPassword to access Elasticsearch REST API-

A snippet from application.yml:#

camunda.operate:  elasticsearch:    # Cluster name    clusterName: elasticsearch    # Url    url: http://localhost:9200

Zeebe broker connection#

Operate needs a connection to Zeebe broker to start the import and to execute user operations.

Settings to connect#

NameDescriptionDefault value
camunda.operate.zeebe.brokerContactPointBroker contact point to zeebe as hostname and portlocalhost:26500

A snippet from application.yml:#

camunda.operate:  zeebe:    # Broker contact point    brokerContactPoint: localhost:26500

Zeebe Elasticsearch exporter#

Operate imports data from Elasticsearch indices created and filled in by Zeebe Elasticsearch Exporter. Therefore settings for this Elasticsearch connection must be defined and must correspond to the settings on Zeebe side.

Settings to connect and import:#

NameDescriptionDefault value
camunda.operate.zeebeElasticsearch.clusterNameCluster name of Elasticsearchelasticsearch
camunda.operate.zeebeElasticsearch.hostHostname where Elasticsearch is runninglocalhost
camunda.operate.zeebeElasticsearch.portPort of Elasticsearch REST API9200
camunda.operate.zeebeElasticsearch.urlURL of Zeebe Elasticsearch REST APIhttp://localhost:9200
camunda.operate.zeebeElasticsearch.prefixIndex prefix as configured in Zeebe Elasticsearch exporterzeebe-record
camunda.operate.zeebeElasticsearch.usernameUsername to access Elasticsearch REST API-
camunda.operate.zeebeElasticsearch.passwordPassword to access Elasticsearch REST API-

A snippet from application.yml:#

camunda.operate:  zeebeElasticsearch:    # Cluster name    clusterName: elasticsearch    # Url    url: localhost:9200    # Index prefix, configured in Zeebe Elasticsearch exporter    prefix: zeebe-record

Operation executor#

Operations are user operations like Cancellation of workflow instance(s) or Updating the variable value. Operations are executed in multi-threaded manner.

NameDescriptionDefault value
camunda.operate.operationExecutor.threadsCountHow many threads should be used3

A snippet from application.yml#

camunda.operate:  operationExecutor:    threadsCount: 3

Monitoring Operate#

Operate includes Spring Boot Actuator inside, that provides number of monitoring possibilities.

Operate uses following Actuator configuration by default:

# enable health check and metrics endpointsmanagement.endpoints.web.exposure.include: health,prometheus# enable Kubernetes health groups:# https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html#production-ready-kubernetes-probesmanagement.health.probes.enabled: true

With this configuration following endpoints are available for use out of the box:

<server>:8080/actuator/prometheus Prometheus metrics

<server>:8080/actuator/health/liveness Liveness probe

<server>:8080/actuator/health/readiness Readiness probe

Versions before 0.25.0#

In versions before 0.25.0 management endpoints look differently, therefore we recommend to reconfigure for next versions.

NameBefore 0.25.0Starting with 0.25.0
Readiness/api/check/actuator/health/readiness
Liveness/actuator/health/actuator/health/liveness

Logging#

Operate uses Log4j2 framework for logging. In distribution archive as well as inside a Docker image config/log4j2.xml logging configuration files is included, that can be further adjusted to your needs:

<?xml version="1.0" encoding="UTF-8"?><Configuration status="WARN" monitorInterval="30">  <Properties>    <Property name="LOG_PATTERN">%clr{%d{yyyy-MM-dd HH:mm:ss.SSS}}{faint} %clr{%5p} %clr{${sys:PID}}{magenta} %clr{---}{faint} %clr{[%15.15t]}{faint} %clr{%-40.40c{1.}}{cyan} %clr{:}{faint} %m%n%xwEx</Property>  </Properties>  <Appenders>    <Console name="Console" target="SYSTEM_OUT" follow="true">      <PatternLayout pattern="${LOG_PATTERN}"/>    </Console>    <Console name="Stackdriver" target="SYSTEM_OUT" follow="true">      <StackdriverJSONLayout/>    </Console>  </Appenders>  <Loggers>    <Logger name="org.camunda.operate" level="info" />    <Root level="info">      <AppenderRef ref="${env:OPERATE_LOG_APPENDER:-Console}"/>    </Root>  </Loggers></Configuration>

By default Console log appender will be used.

JSON logging configuration#

You can choose to output logs in JSON format (Stackdriver compatible). To enable it, define the environment variable OPERATE_LOG_APPENDER like this:

OPERATE_LOG_APPENDER=Stackdriver

An example of application.yml file#

The following snippet represents the default Operate configuration, which is shipped with the distribution. It can be found inside the config folder (config/application.yml) and can be used to adjust Operate to your needs.

# Operate configuration file
camunda.operate:  # Set operate username and password.  # If user with <username> does not exists it will be created.  # Default: demo/demo  #username:  #password:  # ELS instance to store Operate data  elasticsearch:    # Cluster name    clusterName: elasticsearch    # Host    host: localhost    # Transport port    port: 9200  # Zeebe instance  zeebe:    # Broker contact point    brokerContactPoint: localhost:26500  # ELS instance to export Zeebe data to  zeebeElasticsearch:    # Cluster name    clusterName: elasticsearch    # Host    host: localhost    # Transport port    port: 9200    # Index prefix, configured in Zeebe Elasticsearch exporter    prefix: zeebe-record