Configuration
As a Spring Boot application, Operate supports any standard Spring configuration method.
By default, the configuration for Operate is stored in a YAML file (application.yml). All Operate-related settings are prefixed with camunda.operate.
Configuration properties can be defined as environment variables using Spring Boot conventions. To define an environment variable, convert the configuration property to uppercase, remove any dashes, and replace any delimiters (.) with _.
For example, the property camunda.operate.elasticsearch.clustername is represented by the environment variable CAMUNDA_OPERATE_ELASTICSEARCH_CLUSTERNAME.
The following parts are configurable:
Webserver
Operate supports customizing the context-path using default Spring configuration.
Example for application.yml:
server.servlet.context-path: /operate
Example for environment variable:
SERVER_SERVLET_CONTEXT_PATH=/operate
The default context-path is /.
Security
To change the values for http header for security reasons, you can use the configuration parameters:
| Name | Description | Default value |
|---|---|---|
| camunda.operate.websecurity.contentSecurityPolicy | See Spring description | base-uri 'self'; default-src 'self' 'unsafe-inline' 'unsafe-eval' cdn.jsdelivr.net;img-src * data:; block-all-mixed-content; form-action 'self'; frame-ancestors 'none'; object-src 'none'; font-src 'self' fonts.camunda.io cdn.jsdelivr.net; sandbox allow-forms allow-scripts allow-same-origin allow-popups |
| camunda.operate.websecurity.httpStrictTransportSecurityMaxAgeInSeconds | See Spring description | 63,072,000 (two years) |
| camunda.operate.websecurity.httpStrictTransportSecurityIncludeSubDomains | See Spring description | true |
Multi-tenancy
Multi-tenancy in the context of Camunda 8 refers to the ability of Camunda 8 to serve multiple distinct tenants or clients within a single installation.
From version 8.3 onwards, Operate has been enhanced to support multi-tenancy for Self-Managed setups. More information about the feature can be found in the multi-tenancy documentation.
The following configuration is required to enable multi-tenancy in Operate:
| YAML path | Environment variable | Description | Default value |
|---|---|---|---|
| camunda.operate.multiTenancy.enabled | CAMUNDA_OPERATE_MULTITENANCY_ENABLED | Activates the multi-tenancy feature within Operate. | false |
The same rules apply to the Operate API.
To ensure seamless integration and functionality, the multi-tenancy feature must also be enabled across all associated components if not configured in Helm so users can view any data from tenants for which they have authorizations configured in Identity.
Find more information (including links to individual component configuration) on the multi-tenancy concepts page.
Securing Operate - Zeebe interaction
While executing user operations, Operate communicates with Zeebe using the Zeebe Java client. For Zeebe to know whether operations are allowed to be executed in terms of tenant assignment, Operate - Zeebe connection must be secured. Check the list of environment variables to be provided in the Zeebe documentation.
Troubleshooting multi-tenancy in Operate
If users can view data from the <default> tenant only and no data from other tenants (and you have not configured multi-tenancy using Helm), multi-tenancy is not enabled in Operate. Refer to the configuration instructions above.
If multi-tenancy is enabled in Operate but disabled in Identity, users will not have any tenant authorizations in Operate and will not be able to access the data of any tenants in Operate.
Elasticsearch or OpenSearch
Operate stores and reads data from Elasticsearch or OpenSearch.
Set the camunda.operate.database to the appropriate database.
Valid values are elasticsearch (default) and opensearch.
Example as environment variable: CAMUNDA_OPERATE_DATABASE=opensearch.
As of the 8.4 release, Operate is now compatible with Amazon OpenSearch 2.5.x. Note that using Amazon OpenSearch requires setting up a new Camunda installation. A migration from previous versions or Elasticsearch environments is currently not supported.
Settings to connect
Operate supports basic authentication for Elasticsearch and OpenSearch
Set the appropriate username/password combination in the configuration to use it.
Settings for Elasticsearch
Settings to connect to a secured Elasticsearch instance
To connect to a secured (https) Elasticsearch instance, you normally need to only set the URL protocol
part to https instead of http. A secured Elasticsearch instance also needs username and password.
The other SSL settings should only be used in case of connection problems; for example, in disabling
host verification.
You may need to import the certificate into JVM runtime.
Either set host and port (deprecated), or url (recommended).
| Name | Description | Default value |
|---|---|---|
| camunda.operate.elasticsearch.indexPrefix | Prefix for index names | operate |
| camunda.operate.elasticsearch.clusterName | Cluster name of Elasticsearch | elasticsearch |
| camunda.operate.elasticsearch.url | URL of Elasticsearch REST API | http://localhost:9200 |
| camunda.operate.elasticsearch.username | Username to access Elasticsearch REST API | - |
| camunda.operate.elasticsearch.password | Password to access Elasticsearch REST API | - |
| camunda.operate.elasticsearch.ssl.certificatePath | Path to certificate used by Elasticsearch | - |
| camunda.operate.elasticsearch.ssl.selfSigned | Certificate was self-signed | false |
| camunda.operate.elasticsearch.ssl.verifyHostname | Should the hostname be validated | false |
Settings for shards and replicas
Operate creates the template with index settings named operate-<version>_template that Elasticsearch uses for all Operate indices. These settings can be changed.
The following configuration parameters define the settings:
| Name | Description | Default value |
|---|---|---|
| camunda.operate.elasticsearch.numberOfShards | How many shards Elasticsearch uses for all Operate indices | 1 |
| camunda.operate.elasticsearch.numberOfReplicas | How many replicas Elasticsearch uses for all Operate indices | 0 |
These values are applied only on first startup of Operate or during version update. After the Operate schema is created, settings may be adjusted directly in the Elasticsearch template, and the new settings are applied to indices created after adjustment.
A snippet from application.yml
camunda.operate:
elasticsearch:
# Cluster name
clusterName: elasticsearch
# Url
url: https://localhost:9200
ssl:
selfSigned: true
Settings for OpenSearch
Settings to connect to a secured OpenSearch instance
To connect to a secured (https) OpenSearch instance, you normally need to only set the URL protocol
part to https instead of http. A secured OpenSearch instance also needs username and password.
The other SSL settings should only be used in case of connection problems; for example, in disabling host verification.
You may need to import the certificate into JVM runtime.
Either set host and port (deprecated), or url (recommended).
| Name | Description | Default value |
|---|---|---|
| camunda.operate.opensearch.indexPrefix | Prefix for index names | operate |
| camunda.operate.opensearch.clusterName | Cluster name of OpenSearch | opensearch |
| camunda.operate.opensearch.url | URL of Elasticsearch REST API | http://localhost:9200 |
| camunda.operate.opensearch.username | Username to access Elasticsearch REST API | - |
| camunda.operate.opensearch.password | Password to access Elasticsearch REST API | - |
| camunda.operate.opensearch.ssl.certificatePath | Path to certificate used by Elasticsearch | - |
| camunda.operate.opensearch.ssl.selfSigned | Certificate was self-signed | false |
| camunda.operate.opensearch.ssl.verifyHostname | Should the hostname be validated | false |
Settings for shards and replicas
Operate creates the template with index settings named operate-<version>_template that OpenSearch uses for all Operate indices. These settings can be changed.
The following configuration parameters define the settings:
| Name | Description | Default value |
|---|---|---|
| camunda.operate.opensearch.numberOfShards | How many shards OpenSearch uses for all Operate indices | 1 |
| camunda.operate.opensearch.numberOfReplicas | How many replicas OpenSearch uses for all Operate indices | 0 |
These values are applied only on first startup of Operate or during version update. After the Operate schema is created, settings may be adjusted directly in the OpenSearch template, and the new settings are applied to indices created after adjustment.
A snippet from application.yml
camunda.operate:
opensearch:
# Cluster name
clusterName: opensearch
# Url
url: https://localhost:9200
ssl:
selfSigned: true
Zeebe broker connection
Operate needs a connection to the Zeebe broker to start the import and execute user operations.
Settings to connect
| Name | Description | Default value |
|---|---|---|
| camunda.operate.zeebe.gatewayAddress | Gateway address that points to Zeebe as hostname and port. | localhost:26500 |
| camunda.operate.zeebe.secure | Connection should be secure via Transport Layer Security (TLS). | false |
| camunda.operate.zeebe.certificatePath | Path to certificate used by Zeebe. This is necessary when the certificate isn't registered in the operating system | - |
Additionally, visit Zeebe Secure Client Communication for more details.
A snippet from application.yml
camunda.operate:
zeebe:
# Gateway host and port
gatewayAddress: localhost:26500
Zeebe Elasticsearch or OpenSearch exporter
Please refer to Supported Environments to find out which versions of Elasticsearch or OpenSearch are supported in a Camunda 8 Self-Managed setup.
For Elasticsearch, Operate imports data from indices created and filled in by the Zeebe Elasticsearch exporter.
For OpenSearch, Operate imports data from indices created and filled in by the Zeebe OpenSearch exporter.
Therefore, settings for this Elasticsearch or OpenSearch connection must be defined and must correspond to the settings on the Zeebe side.
Settings to connect and import
See also settings to connect to a secured Elasticsearch or OpenSearch instance.
You may need to import the certificate keystore into the JVM runtime.
# Kubernetes example:
zeebe:
…
javaOpts: >-
…
-Djavax.net.ssl.trustStore=/path/to/certificates/elasticsearch.jks
| Name | Description | Default value |
|---|---|---|
| camunda.operate.zeebeElasticsearch.clusterName | Cluster name of Elasticsearch | elasticsearch |
| camunda.operate.zeebeElasticsearch.url | URL of Zeebe Elasticsearch REST API | http://localhost:9200 |
| camunda.operate.zeebeElasticsearch.prefix | Index prefix as configured in Zeebe Elasticsearch exporter | zeebe-record |
| camunda.operate.zeebeElasticsearch.username | Username to access Elasticsearch REST API | - |
| camunda.operate.zeebeElasticsearch.password | Password to access Elasticsearch REST API | - |
| camunda.operate.zeebeElasticsearch.ssl.certificatePath | Path to certificate used by Elasticsearch | - |
| camunda.operate.zeebeElasticsearch.ssl.selfSigned | Certificate was self-signed | false |
| camunda.operate.zeebeElasticsearch.ssl.verifyHostname | Should the hostname be validated | false |
Snippet from application.yml for Elasticsearch
camunda.operate:
zeebeElasticsearch:
# Cluster name
clusterName: elasticsearch
# Url
url: https://localhost:9200
# Index prefix, configured in Zeebe Elasticsearch exporter
prefix: zeebe-record
Example for OpenSearch:
| Name | Description | Default value |
|---|---|---|
| camunda.operate.zeebeOpensearch.clusterName | Cluster name of OpenSearch | opensearch |
| camunda.operate.zeebeOpensearch.url | URL of Zeebe OpenSearch REST API | http://localhost:9200 |
| camunda.operate.zeebeOpensearch.prefix | Index prefix as configured in Zeebe OpenSearch exporter | zeebe-record |
| camunda.operate.zeebeOpensearch.username | Username to access OpenSearch REST API | - |
| camunda.operate.zeebeOpensearch.password | Password to access OpenSearch REST API | - |
| camunda.operate.zeebeOpensearch.ssl.certificatePath | Path to certificate used by OpenSearch | - |
| camunda.operate.zeebeOpensearch.ssl.selfSigned | Certificate was self-signed | false |
| camunda.operate.zeebeOpensearch.ssl.verifyHostname | Should the hostname be validated | false |
Snippet from application.yml for OpenSearch
camunda.operate:
zeebeOpensearch:
# Cluster name
clusterName: opensearch
# Url
url: https://localhost:9200
# Index prefix, configured in Zeebe OpenSearch exporter
prefix: zeebe-record
Operation executor
Operations are user operations, like cancellation of process instance(s) or updating the variable value.
Operations are executed in a multi-threaded manner.
| Name | Description | Default value |
|---|---|---|
| camunda.operate.operationExecutor.threadsCount | How many threads should be used. | 3 |
Snippet from application.yml
camunda.operate:
operationExecutor:
threadsCount: 3
Monitoring Operate
Operate includes Spring Boot Actuator inside. This provides the number of monitoring possibilities.
Operate uses the following Actuator configuration by default:
# Disable default health indicators
# https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html#production-ready-health-indicators
management.health.defaults.enabled: false
# enable Kubernetes health groups:
# https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html#production-ready-kubernetes-probes
management.health.probes.enabled: true
# enable several Actuator endpoints
management.endpoints.web.exposure.include: health, prometheus, loggers, usage-metrics, backup
With this configuration, the 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
This configuration may be overwritten by changing the corresponding configuration parameters values.
Versions before 0.25.0
In versions before 0.25.0, management endpoints look different. Therefore, we recommend reconfiguring for next versions.
| Name | Before 0.25.0 | Starting with 0.25.0 |
|---|---|---|
| Readiness | /api/check | /actuator/health/readiness |
| Liveness | /actuator/health | /actuator/health/liveness |
Logging
Operate uses the Log4j2 framework for logging. In the distribution archive, as well as inside a Docker image, config/log4j2.xml logging configuration files are included and 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="io.camunda.operate" level="info" />
<Root level="info">
<AppenderRef ref="${env:OPERATE_LOG_APPENDER:-Console}"/>
</Root>
</Loggers>
</Configuration>
By default, ConsoleAppender is 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
Change logging level at runtime
Operate supports the default scheme for changing logging levels as provided by Spring Boot.
The log level for Operate can be changed by following the Setting a Log Level section.
Set all Operate loggers to DEBUG
curl 'http://localhost:8080/actuator/loggers/io.camunda.operate' -i -X POST \
-H 'Content-Type: application/json' \
-d '{"configuredLevel":"debug"}'
Example of application.yml file
The following snippet represents the default Operate configuration, which is shipped with the distribution. This 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 userId, displayName and password.
# If user with <userId> does not exists it will be created.
# Default: demo/demo/demo
userId: anUserId
displayName: nameShownInWebpage
password: aPassword
roles:
- OWNER
- USER
# ELS instance to store Operate data
elasticsearch:
# Cluster name
clusterName: elasticsearch
# Url
url: http://localhost:9200
# Zeebe instance
zeebe:
# Gateway address to zeebe
gatewayAddress: localhost:26500
# ELS instance to export Zeebe data to
zeebeElasticsearch:
# Cluster name
clusterName: elasticsearch
# url
url: http://localhost:9200
# Index prefix, configured in Zeebe Elasticsearch exporter
prefix: zeebe-record