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---
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description: "Deploy Conductor as a self-hosted workflow engine in production — architecture overview, horizontal scaling, database, queue, indexing, and lock configuration, workflow monitoring, and recommended production deployment settings for this open source workflow orchestration platform."
|
||||
---
|
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|
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# Self-hosted deployment guide
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||||
|
||||
Conductor is a self-hosted, open source workflow engine that you deploy on your own infrastructure. This production deployment guide covers everything you need to run Conductor at scale: architecture, backend configuration, horizontal scaling, workflow monitoring, and tuning.
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|
||||
## Architecture overview
|
||||
|
||||
A Conductor deployment consists of these components:
|
||||
|
||||

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||||
|
||||
**What each component does:**
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||||
|
||||
| Component | Role |
|
||||
|:--|:--|
|
||||
| **API Server** | Exposes REST and gRPC endpoints for workflow and task operations. |
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||||
| **Decider** | The core state machine. Evaluates workflow state and schedules the next set of tasks. |
|
||||
| **Sweeper** | Background process that polls for running workflows and triggers the decider to evaluate them. Required for progress on long-running workflows. |
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||||
| **System Task Workers** | Execute built-in task types (HTTP, Event, Wait, Inline, JSON_JQ, etc.) within the server JVM. |
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||||
| **Event Processor** | Listens to configured event buses and triggers workflows or completes tasks based on incoming events. |
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| **Database** | Persists workflow definitions, execution state, task state, and poll data. |
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| **Queue** | Manages task scheduling — pending tasks, delayed tasks, and the sweeper's own work queue. |
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| **Index** | Powers workflow and task search in the UI and via the search API. |
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| **Lock** | Distributed lock that prevents concurrent decider evaluations of the same workflow. **Required in production.** |
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||||
|
||||
---
|
||||
|
||||
## Quick start with Docker Compose
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||||
|
||||
For local development and evaluation:
|
||||
|
||||
```shell
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||||
git clone https://github.com/conductor-oss/conductor
|
||||
cd conductor
|
||||
docker compose -f docker/docker-compose.yaml up
|
||||
```
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||||
|
||||
This starts Conductor with Redis (database + queue), Elasticsearch (indexing), and the server with UI on port **8080**.
|
||||
|
||||
| URL | Description |
|
||||
|:----|:---|
|
||||
| `http://localhost:8080` | Conductor UI |
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||||
| `http://localhost:8080/swagger-ui/index.html` | REST API docs |
|
||||
| `http://localhost:8080/api/` | API base URL |
|
||||
|
||||
Pre-built compose files for other backend combinations:
|
||||
|
||||
| Compose file | Database | Queue | Index |
|
||||
|:--|:--|:--|:--|
|
||||
| `docker-compose.yaml` | Redis | Redis | Elasticsearch 7 |
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||||
| `docker-compose-es8.yaml` | Redis | Redis | Elasticsearch 8 |
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||||
| `docker-compose-postgres.yaml` | PostgreSQL | PostgreSQL | PostgreSQL |
|
||||
| `docker-compose-postgres-es7.yaml` | PostgreSQL | PostgreSQL | Elasticsearch 7 |
|
||||
| `docker-compose-mysql.yaml` | MySQL | Redis | Elasticsearch 7 |
|
||||
| `docker-compose-redis-os2.yaml` | Redis | Redis | OpenSearch 2 |
|
||||
| `docker-compose-redis-os3.yaml` | Redis | Redis | OpenSearch 3 |
|
||||
|
||||
```shell
|
||||
# Example: PostgreSQL for everything
|
||||
docker compose -f docker/docker-compose-postgres.yaml up
|
||||
|
||||
# Example: Redis + Elasticsearch 8
|
||||
docker compose -f docker/docker-compose-es8.yaml up
|
||||
|
||||
# Example: Redis + OpenSearch 3
|
||||
docker compose -f docker/docker-compose-redis-os3.yaml up
|
||||
```
|
||||
|
||||
For Elasticsearch 8, set `conductor.indexing.type=elasticsearch8` and use
|
||||
`config-redis-es8.properties` or an equivalent custom config.
|
||||
|
||||
---
|
||||
|
||||
## Production configuration
|
||||
|
||||
All configuration is done via Spring Boot properties in `application.properties` or environment variables. Properties can also be mounted as a Docker volume.
|
||||
|
||||
### Database
|
||||
|
||||
The database stores workflow definitions, execution state, task state, and event handler definitions.
|
||||
|
||||
```properties
|
||||
conductor.db.type=postgres
|
||||
```
|
||||
|
||||
**Supported database backends:**
|
||||
|
||||
| Backend | Property value | When to use | Notes |
|
||||
|:--|:--|:--|:--|
|
||||
| PostgreSQL | `postgres` | **Recommended for production.** ACID, battle-tested, supports indexing too. | Requires `spring.datasource.*` config. |
|
||||
| MySQL | `mysql` | Production alternative if your team already runs MySQL. | Requires `spring.datasource.*` config. Needs separate queue backend (Redis). |
|
||||
| Redis | `redis_standalone` | Fast, simple. Good for moderate scale. | Requires `conductor.redis.*` config. |
|
||||
| Cassandra | `cassandra` | High write throughput, multi-region. | Requires `conductor.cassandra.*` config. |
|
||||
| SQLite | `sqlite` | **Local development only.** Single-file, zero config. | Default. Not for production. |
|
||||
|
||||
#### PostgreSQL
|
||||
|
||||
```properties
|
||||
conductor.db.type=postgres
|
||||
conductor.external-payload-storage.type=postgres
|
||||
|
||||
spring.datasource.url=jdbc:postgresql://db-host:5432/conductor
|
||||
spring.datasource.username=conductor
|
||||
spring.datasource.password=<password>
|
||||
|
||||
# Optional tuning
|
||||
conductor.postgres.deadlockRetryMax=3
|
||||
conductor.postgres.taskDefCacheRefreshInterval=60s
|
||||
conductor.postgres.asyncMaxPoolSize=12
|
||||
conductor.postgres.asyncWorkerQueueSize=100
|
||||
```
|
||||
|
||||
#### MySQL
|
||||
|
||||
```properties
|
||||
conductor.db.type=mysql
|
||||
|
||||
spring.datasource.url=jdbc:mysql://db-host:3306/conductor
|
||||
spring.datasource.username=conductor
|
||||
spring.datasource.password=<password>
|
||||
|
||||
# Optional tuning
|
||||
conductor.mysql.deadlockRetryMax=3
|
||||
conductor.mysql.taskDefCacheRefreshInterval=60s
|
||||
```
|
||||
|
||||
#### Redis
|
||||
|
||||
```properties
|
||||
conductor.db.type=redis_standalone
|
||||
|
||||
# Format: host:port:rack (semicolon-separated for multiple hosts)
|
||||
conductor.redis.hosts=redis-host:6379:us-east-1c
|
||||
conductor.redis.workflowNamespacePrefix=conductor
|
||||
conductor.redis.queueNamespacePrefix=conductor_queues
|
||||
conductor.redis.taskDefCacheRefreshInterval=1s
|
||||
|
||||
# Connection pool
|
||||
conductor.redis.maxIdleConnections=8
|
||||
conductor.redis.minIdleConnections=5
|
||||
|
||||
# SSL
|
||||
conductor.redis.ssl=false
|
||||
|
||||
# Auth (password is taken from the first host entry: host:port:rack:password)
|
||||
# Or set conductor.redis.username and conductor.redis.password directly
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
### Queue
|
||||
|
||||
The queue backend manages task scheduling — it tracks which tasks are pending, delayed, or ready for execution. The sweeper and system task workers all depend on it.
|
||||
|
||||
```properties
|
||||
conductor.queue.type=postgres
|
||||
```
|
||||
|
||||
**Supported queue backends:**
|
||||
|
||||
| Backend | Property value | When to use |
|
||||
|:--|:--|:--|
|
||||
| PostgreSQL | `postgres` | Use when database is also PostgreSQL. Simplest stack. |
|
||||
| Redis | `redis_standalone` | Use when database is Redis or MySQL. Fast, low-latency. |
|
||||
| SQLite | `sqlite` | Local development only. |
|
||||
|
||||
!!! tip "Match your queue backend to your database"
|
||||
PostgreSQL database + PostgreSQL queue is the simplest production stack — one fewer dependency. If you use MySQL for the database, pair it with Redis for the queue.
|
||||
|
||||
---
|
||||
|
||||
### Indexing
|
||||
|
||||
The indexing backend powers workflow and task search in the UI and via the `/api/workflow/search` and `/api/tasks/search` endpoints.
|
||||
|
||||
```properties
|
||||
conductor.indexing.enabled=true
|
||||
conductor.indexing.type=postgres
|
||||
```
|
||||
|
||||
**Supported indexing backends:**
|
||||
|
||||
| Backend | Property value | When to use | Notes |
|
||||
|:--|:--|:--|:--|
|
||||
| PostgreSQL | `postgres` | Simplest stack when database is also PostgreSQL. | Set `conductor.elasticsearch.version=0` to disable ES client. |
|
||||
| Elasticsearch 7 | `elasticsearch` | Best search performance at scale. Full-text search. | Set `conductor.elasticsearch.version=7`. |
|
||||
| Elasticsearch 8 | `elasticsearch8` | Use when running the ES8 persistence module. | Set `conductor.elasticsearch.version=8`. |
|
||||
| OpenSearch 2 | `opensearch2` | Open-source ES alternative. | Compatible with ES 7 queries. |
|
||||
| OpenSearch 3 | `opensearch3` | Latest OpenSearch. | |
|
||||
| SQLite | `sqlite` | Local development only. | |
|
||||
| Disabled | N/A | Set `conductor.indexing.enabled=false`. UI search won't work. | |
|
||||
|
||||
#### PostgreSQL indexing
|
||||
|
||||
```properties
|
||||
conductor.indexing.enabled=true
|
||||
conductor.indexing.type=postgres
|
||||
# Disable Elasticsearch client
|
||||
conductor.elasticsearch.version=0
|
||||
```
|
||||
|
||||
#### Elasticsearch 7
|
||||
|
||||
```properties
|
||||
conductor.indexing.enabled=true
|
||||
conductor.elasticsearch.url=http://es-host:9200
|
||||
conductor.elasticsearch.version=7
|
||||
conductor.elasticsearch.indexName=conductor
|
||||
conductor.elasticsearch.clusterHealthColor=yellow
|
||||
|
||||
# Performance tuning
|
||||
conductor.elasticsearch.indexBatchSize=1
|
||||
conductor.elasticsearch.asyncMaxPoolSize=12
|
||||
conductor.elasticsearch.asyncWorkerQueueSize=100
|
||||
conductor.elasticsearch.asyncBufferFlushTimeout=10s
|
||||
conductor.elasticsearch.indexShardCount=5
|
||||
conductor.elasticsearch.indexReplicasCount=1
|
||||
|
||||
# Auth (if using security)
|
||||
conductor.elasticsearch.username=elastic
|
||||
conductor.elasticsearch.password=<password>
|
||||
```
|
||||
|
||||
#### Elasticsearch 8
|
||||
|
||||
```properties
|
||||
conductor.indexing.enabled=true
|
||||
conductor.indexing.type=elasticsearch8
|
||||
conductor.elasticsearch.url=http://es-host:9200
|
||||
conductor.elasticsearch.version=8
|
||||
conductor.elasticsearch.indexName=conductor
|
||||
conductor.elasticsearch.clusterHealthColor=yellow
|
||||
```
|
||||
|
||||
#### OpenSearch
|
||||
|
||||
```properties
|
||||
conductor.indexing.enabled=true
|
||||
conductor.indexing.type=opensearch2 # or opensearch3
|
||||
conductor.opensearch.url=http://os-host:9200
|
||||
conductor.opensearch.indexPrefix=conductor
|
||||
conductor.opensearch.clusterHealthColor=yellow
|
||||
conductor.opensearch.indexReplicasCount=0
|
||||
```
|
||||
|
||||
#### Async indexing
|
||||
|
||||
For high-throughput deployments, enable async indexing to decouple the indexing path from the workflow execution path:
|
||||
|
||||
```properties
|
||||
conductor.app.asyncIndexingEnabled=true
|
||||
conductor.app.asyncUpdateShortRunningWorkflowDuration=30s
|
||||
conductor.app.asyncUpdateDelay=60s
|
||||
```
|
||||
|
||||
#### Indexing toggles
|
||||
|
||||
Control what gets indexed:
|
||||
|
||||
```properties
|
||||
conductor.app.taskIndexingEnabled=true
|
||||
conductor.app.taskExecLogIndexingEnabled=true
|
||||
conductor.app.eventMessageIndexingEnabled=true
|
||||
conductor.app.eventExecutionIndexingEnabled=true
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
### Locking
|
||||
|
||||
!!! warning "Required for production"
|
||||
Distributed locking prevents race conditions when multiple server instances evaluate the same workflow concurrently. **Always enable locking in production with a distributed lock provider** (Redis or Zookeeper).
|
||||
|
||||
```properties
|
||||
conductor.workflow-execution-lock.type=redis
|
||||
conductor.app.workflowExecutionLockEnabled=true
|
||||
```
|
||||
|
||||
**Supported lock providers:**
|
||||
|
||||
| Provider | Property value | When to use |
|
||||
|:--|:--|:--|
|
||||
| Redis | `redis` | **Recommended.** Use when Redis is already in the stack. |
|
||||
| Zookeeper | `zookeeper` | Use when Zookeeper is available (e.g. Kafka deployments). |
|
||||
| Local | `local_only` | Single-instance development only. **Not safe for multi-instance.** |
|
||||
|
||||
#### Redis lock
|
||||
|
||||
```properties
|
||||
conductor.workflow-execution-lock.type=redis
|
||||
conductor.app.workflowExecutionLockEnabled=true
|
||||
conductor.app.lockLeaseTime=60000 # lock held for max 60s
|
||||
conductor.app.lockTimeToTry=500 # wait up to 500ms to acquire
|
||||
|
||||
conductor.redis-lock.serverType=SINGLE # SINGLE, CLUSTER, or SENTINEL
|
||||
conductor.redis-lock.serverAddress=redis://redis-host:6379
|
||||
# conductor.redis-lock.serverPassword=<password>
|
||||
# conductor.redis-lock.serverMasterName=master # for Sentinel
|
||||
# conductor.redis-lock.namespace=conductor # key prefix
|
||||
conductor.redis-lock.ignoreLockingExceptions=false
|
||||
```
|
||||
|
||||
> **Sentinel with multiple endpoints:** When using `SENTINEL` server type, you can provide
|
||||
> multiple sentinel addresses separated by semicolons for improved high availability:
|
||||
> ```properties
|
||||
> conductor.redis-lock.serverType=SENTINEL
|
||||
> conductor.redis-lock.serverAddress=redis://sentinel-0:26379;redis://sentinel-1:26379
|
||||
> conductor.redis-lock.serverMasterName=mymaster
|
||||
> ```
|
||||
> This ensures the lock client can discover the master even if one sentinel node is down.
|
||||
|
||||
#### Zookeeper lock
|
||||
|
||||
```properties
|
||||
conductor.workflow-execution-lock.type=zookeeper
|
||||
conductor.app.workflowExecutionLockEnabled=true
|
||||
conductor.app.lockLeaseTime=60000
|
||||
conductor.app.lockTimeToTry=500
|
||||
|
||||
conductor.zookeeper-lock.connectionString=zk1:2181,zk2:2181,zk3:2181
|
||||
# conductor.zookeeper-lock.sessionTimeoutMs=60000
|
||||
# conductor.zookeeper-lock.connectionTimeoutMs=15000
|
||||
# conductor.zookeeper-lock.namespace=conductor
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
### Sweeper
|
||||
|
||||
The sweeper is a background process that monitors running workflows. It polls the queue for workflows that need evaluation and triggers the decider. Without the sweeper, long-running workflows will not make progress.
|
||||
|
||||
The sweeper runs automatically as part of the Conductor server. Tune the thread count based on your workflow volume:
|
||||
|
||||
```properties
|
||||
# Number of sweeper threads (default: availableProcessors * 2)
|
||||
conductor.app.sweeperThreadCount=8
|
||||
|
||||
# How long to wait when polling the sweep queue (default: 2000ms)
|
||||
conductor.app.sweeperWorkflowPollTimeout=2000
|
||||
|
||||
# Batch size per sweep poll (default: 2)
|
||||
conductor.app.sweeper.sweepBatchSize=2
|
||||
|
||||
# Queue pop timeout in ms (default: 100)
|
||||
conductor.app.sweeper.queuePopTimeout=100
|
||||
```
|
||||
|
||||
!!! tip "Sweeper sizing"
|
||||
Start with `sweeperThreadCount = 2 * CPU cores`. If you see workflows stuck in RUNNING state, increase it. If CPU usage is high on idle, decrease it.
|
||||
|
||||
---
|
||||
|
||||
### System task workers
|
||||
|
||||
System task workers execute built-in task types (HTTP, Event, Wait, Inline, JSON_JQ_TRANSFORM, etc.) inside the Conductor server JVM. They poll internal queues for scheduled system tasks and execute them.
|
||||
|
||||
```properties
|
||||
# Number of system task worker threads (default: availableProcessors * 2)
|
||||
conductor.app.systemTaskWorkerThreadCount=20
|
||||
|
||||
# Max number of tasks to poll at once (default: same as thread count)
|
||||
conductor.app.systemTaskMaxPollCount=20
|
||||
|
||||
# Poll interval (default: 50ms)
|
||||
conductor.app.systemTaskWorkerPollInterval=50ms
|
||||
|
||||
# Callback duration — how often to re-check async system tasks (default: 30s)
|
||||
conductor.app.systemTaskWorkerCallbackDuration=30s
|
||||
|
||||
# Queue pop timeout (default: 100ms)
|
||||
conductor.app.systemTaskQueuePopTimeout=100ms
|
||||
```
|
||||
|
||||
#### Running system task workers separately
|
||||
|
||||
In large deployments, you may want to run system task workers on dedicated instances, separate from the API server. Use the **execution namespace** to isolate which instance handles system tasks:
|
||||
|
||||
```properties
|
||||
# On API-only instances — set a namespace that no system task worker listens on
|
||||
conductor.app.systemTaskWorkerExecutionNamespace=api-only
|
||||
conductor.app.systemTaskWorkerThreadCount=0
|
||||
|
||||
# On dedicated system task worker instances — match the namespace
|
||||
conductor.app.systemTaskWorkerExecutionNamespace=worker-pool-1
|
||||
conductor.app.systemTaskWorkerThreadCount=40
|
||||
conductor.app.systemTaskMaxPollCount=40
|
||||
```
|
||||
|
||||
#### Isolated system task workers
|
||||
|
||||
For task domain isolation (routing specific tasks to specific worker groups):
|
||||
|
||||
```properties
|
||||
# Threads per isolation group (default: 1)
|
||||
conductor.app.isolatedSystemTaskWorkerThreadCount=4
|
||||
```
|
||||
|
||||
#### Postpone threshold
|
||||
|
||||
When a system task has been polled many times without completing (e.g. a Join waiting for branches), Conductor progressively delays re-evaluation to avoid busy-polling:
|
||||
|
||||
```properties
|
||||
# After this many polls, begin exponential backoff (default: 200)
|
||||
conductor.app.systemTaskPostponeThreshold=200
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
### Event processing
|
||||
|
||||
The event processor listens to configured event buses and triggers workflows or completes tasks based on incoming events.
|
||||
|
||||
```properties
|
||||
# Thread count for event processing (default: 2)
|
||||
conductor.app.eventProcessorThreadCount=4
|
||||
|
||||
# Event queue polling
|
||||
conductor.app.eventQueueSchedulerPollThreadCount=4 # default: CPU cores
|
||||
conductor.app.eventQueuePollInterval=100ms
|
||||
conductor.app.eventQueuePollCount=10
|
||||
conductor.app.eventQueueLongPollTimeout=1000ms
|
||||
```
|
||||
|
||||
See the [Event-driven recipes](../cookbook/event-driven.md) for configuring Kafka, NATS, AMQP, and SQS event queues.
|
||||
|
||||
---
|
||||
|
||||
### Payload size limits
|
||||
|
||||
Conductor enforces payload size limits to prevent oversized data from degrading performance. When a payload exceeds the threshold, it is automatically stored in external payload storage (S3, PostgreSQL, or Azure Blob).
|
||||
|
||||
```properties
|
||||
# Workflow input/output — threshold to move to external storage (default: 5120 KB)
|
||||
conductor.app.workflowInputPayloadSizeThreshold=5120KB
|
||||
conductor.app.workflowOutputPayloadSizeThreshold=5120KB
|
||||
|
||||
# Workflow input/output — hard limit, fails the workflow (default: 10240 KB)
|
||||
conductor.app.maxWorkflowInputPayloadSizeThreshold=10240KB
|
||||
conductor.app.maxWorkflowOutputPayloadSizeThreshold=10240KB
|
||||
|
||||
# Task input/output — threshold to move to external storage (default: 3072 KB)
|
||||
conductor.app.taskInputPayloadSizeThreshold=3072KB
|
||||
conductor.app.taskOutputPayloadSizeThreshold=3072KB
|
||||
|
||||
# Task input/output — hard limit, fails the task (default: 10240 KB)
|
||||
conductor.app.maxTaskInputPayloadSizeThreshold=10240KB
|
||||
conductor.app.maxTaskOutputPayloadSizeThreshold=10240KB
|
||||
|
||||
# Workflow variables — hard limit (default: 256 KB)
|
||||
conductor.app.maxWorkflowVariablesPayloadSizeThreshold=256KB
|
||||
```
|
||||
|
||||
For external payload storage configuration, see [External Payload Storage](../../documentation/advanced/externalpayloadstorage.md).
|
||||
|
||||
---
|
||||
|
||||
### Workflow monitoring and observability
|
||||
|
||||
Conductor exposes Prometheus-compatible metrics out of the box for workflow monitoring and observability:
|
||||
|
||||
```properties
|
||||
conductor.metrics-prometheus.enabled=true
|
||||
management.endpoints.web.exposure.include=health,info,prometheus
|
||||
management.metrics.web.server.request.autotime.percentiles=0.50,0.75,0.90,0.95,0.99
|
||||
management.endpoint.health.show-details=always
|
||||
```
|
||||
|
||||
Scrape `http://<conductor-host>:8080/actuator/prometheus` with Prometheus.
|
||||
|
||||
For details on available metrics, see [Server Metrics](../../documentation/metrics/server.md) and [Client Metrics](../../documentation/metrics/client.md).
|
||||
|
||||
---
|
||||
|
||||
## Recommended production configurations
|
||||
|
||||
### PostgreSQL stack (simplest)
|
||||
|
||||
One database for everything — fewest moving parts.
|
||||
|
||||
```properties
|
||||
# Database
|
||||
conductor.db.type=postgres
|
||||
conductor.queue.type=postgres
|
||||
conductor.external-payload-storage.type=postgres
|
||||
spring.datasource.url=jdbc:postgresql://db-host:5432/conductor
|
||||
spring.datasource.username=conductor
|
||||
spring.datasource.password=<password>
|
||||
|
||||
# Indexing (use PostgreSQL, no Elasticsearch needed)
|
||||
conductor.indexing.enabled=true
|
||||
conductor.indexing.type=postgres
|
||||
conductor.elasticsearch.version=0
|
||||
|
||||
# Locking (use Redis — lightweight, fast)
|
||||
conductor.workflow-execution-lock.type=redis
|
||||
conductor.app.workflowExecutionLockEnabled=true
|
||||
conductor.redis-lock.serverAddress=redis://redis-host:6379
|
||||
|
||||
# Sweeper
|
||||
conductor.app.sweeperThreadCount=8
|
||||
|
||||
# System task workers
|
||||
conductor.app.systemTaskWorkerThreadCount=20
|
||||
conductor.app.systemTaskMaxPollCount=20
|
||||
|
||||
# Metrics
|
||||
conductor.metrics-prometheus.enabled=true
|
||||
management.endpoints.web.exposure.include=health,info,prometheus
|
||||
```
|
||||
|
||||
### Redis + Elasticsearch stack (high throughput)
|
||||
|
||||
Best search performance and lowest latency for queue operations.
|
||||
|
||||
```properties
|
||||
# Database + Queue
|
||||
conductor.db.type=redis_standalone
|
||||
conductor.queue.type=redis_standalone
|
||||
conductor.redis.hosts=redis-host:6379:us-east-1c
|
||||
conductor.redis.workflowNamespacePrefix=conductor
|
||||
conductor.redis.queueNamespacePrefix=conductor_queues
|
||||
|
||||
# Indexing
|
||||
conductor.indexing.enabled=true
|
||||
conductor.elasticsearch.url=http://es-host:9200
|
||||
conductor.elasticsearch.version=7
|
||||
conductor.elasticsearch.indexName=conductor
|
||||
conductor.elasticsearch.clusterHealthColor=yellow
|
||||
conductor.app.asyncIndexingEnabled=true
|
||||
|
||||
# Locking
|
||||
conductor.workflow-execution-lock.type=redis
|
||||
conductor.app.workflowExecutionLockEnabled=true
|
||||
conductor.redis-lock.serverAddress=redis://redis-host:6379
|
||||
|
||||
# Sweeper
|
||||
conductor.app.sweeperThreadCount=16
|
||||
|
||||
# System task workers
|
||||
conductor.app.systemTaskWorkerThreadCount=40
|
||||
conductor.app.systemTaskMaxPollCount=40
|
||||
|
||||
# Metrics
|
||||
conductor.metrics-prometheus.enabled=true
|
||||
management.endpoints.web.exposure.include=health,info,prometheus
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Running with Docker
|
||||
|
||||
### Using Docker Compose
|
||||
|
||||
```shell
|
||||
git clone https://github.com/conductor-oss/conductor
|
||||
cd conductor
|
||||
docker compose -f docker/docker-compose.yaml up
|
||||
```
|
||||
|
||||
To use a different backend, swap the compose file:
|
||||
|
||||
```shell
|
||||
docker compose -f docker/docker-compose-postgres.yaml up
|
||||
```
|
||||
|
||||
### Using the standalone image
|
||||
|
||||
```shell
|
||||
docker run -p 8080:8080 conductoross/conductor:latest
|
||||
```
|
||||
|
||||
### Custom configuration via volume mount
|
||||
|
||||
Mount your own properties file to override the defaults without rebuilding the image:
|
||||
|
||||
```shell
|
||||
docker run -p 8080:8080 \
|
||||
-v /path/to/my-config.properties:/app/config/config.properties \
|
||||
conductoross/conductor:latest
|
||||
```
|
||||
|
||||
### Accessing Conductor
|
||||
|
||||
| URL | Description |
|
||||
|:----|:---|
|
||||
| `http://localhost:8080` | Conductor UI |
|
||||
| `http://localhost:8080/swagger-ui/index.html` | REST API docs |
|
||||
|
||||
### Shutting down
|
||||
|
||||
```shell
|
||||
# Ctrl+C to stop, then:
|
||||
docker compose down
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Multi-instance deployment and horizontal scaling
|
||||
|
||||
For high availability and horizontal scaling, run multiple Conductor server instances behind a load balancer. All instances share the same database, queue, index, and lock backends. This architecture enables workflow engine scalability to millions of concurrent executions.
|
||||
|
||||
**Requirements:**
|
||||
|
||||
- **Distributed locking must be enabled** (`redis` or `zookeeper`). Without it, concurrent decider evaluations on the same workflow will cause race conditions.
|
||||
- All instances must point to the same database, queue, and indexing backends.
|
||||
- The load balancer should use round-robin or least-connections routing.
|
||||
|
||||
**Optional: separate API and worker instances:**
|
||||
|
||||
```
|
||||
┌──────────────────┐ ┌──────────────────┐
|
||||
│ API Instance 1 │ │ API Instance 2 │ ← handle REST/gRPC, low system task threads
|
||||
│ (systemTask=0) │ │ (systemTask=0) │
|
||||
└────────┬─────────┘ └────────┬─────────┘
|
||||
│ │
|
||||
┌────┴────────────────────────┴────┐
|
||||
│ Load Balancer │
|
||||
└────┬────────────────────────┬────┘
|
||||
│ │
|
||||
┌────────┴──────────┐ ┌───────┴───────────┐
|
||||
│ Worker Instance │ │ Worker Instance │ ← high system task threads, sweeper
|
||||
│ (systemTask=40) │ │ (systemTask=40) │
|
||||
└───────────────────┘ └───────────────────┘
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
| Issue | Fix |
|
||||
|:--|:--|
|
||||
| Out of memory or slow performance | Check JVM heap usage and adjust `-Xms` / `-Xmx` as necessary. Monitor with `jstat` or the `/actuator/health` endpoint. |
|
||||
| Elasticsearch stuck in yellow health | Set `conductor.elasticsearch.clusterHealthColor=yellow` or add more ES nodes for green. |
|
||||
| Workflows stuck in RUNNING | Check sweeper is running and `sweeperThreadCount > 0`. Check lock provider is reachable. |
|
||||
| System tasks not executing | Verify `systemTaskWorkerThreadCount > 0` and the queue backend is reachable. |
|
||||
| Config changes not taking effect | Properties are baked into the Docker image at build time. Mount a volume instead of rebuilding. |
|
||||
@@ -0,0 +1,20 @@
|
||||
---
|
||||
description: "Hosted Solutions — run Conductor in the cloud with Orkes, offering enterprise-grade hosting and managed infrastructure."
|
||||
---
|
||||
# Hosted Solutions
|
||||
|
||||
## Orkes
|
||||
[Orkes](https://orkes.io) offers a cloud-hosted, enterprise-grade version of Conductor, enabling teams to get started with minimal operational overhead. Besides full compatibility with Conductor OSS, Orkes Conductor provides [additional features](https://www.orkes.io/platform/conductor-oss-vs-orkes) not available in the open source release.
|
||||
|
||||
Here are the options for using Conductor via Orkes:
|
||||
|
||||
- Developer Edition
|
||||
- Cloud Hosting Plans
|
||||
|
||||
Orkes also operates a [Discourse](https://community.orkes.io/) forum for the community to discuss and share how to use Conductor.
|
||||
|
||||
### Developer Edition
|
||||
The free Orkes Developer Edition for Conductor is available at [developer.orkescloud.com](https://developer.orkescloud.com/). The Developer Edition comes with all of Orkes' enterprise features, including a visual workflow editor, AI orchestration suite, event-driven connectors, human-in-the-loop tasks, and more. You can create and execute workflows from the UI or API.
|
||||
|
||||
### Cloud Hosted Conductor
|
||||
Orkes provides multiple options of hosted Conductor clusters in the cloud (AWS, Azure, and GCP, in addition to private clouds) with enterprise support provided by the Orkes team. Learn more about [Orkes Cloud here](https://orkes.io/cloud).
|
||||
@@ -0,0 +1,83 @@
|
||||
---
|
||||
description: "Building from Source — build and run the Conductor server and UI locally from source for development and testing."
|
||||
---
|
||||
# Building from source
|
||||
|
||||
Build and run Conductor server and UI locally from source. The default configuration uses in-memory persistence with no indexing — all data is lost when the server stops. This setup is for development and testing only.
|
||||
|
||||
For persistent backends, use [Docker Compose](deploy.md) or configure a database backend.
|
||||
|
||||
|
||||
## Prerequisites
|
||||
|
||||
- Java (JDK) 21+
|
||||
- (Optional) [Docker](https://www.docker.com/get-started/) for running tests
|
||||
|
||||
|
||||
## Building and running the server
|
||||
|
||||
1. Clone the repository:
|
||||
|
||||
```shell
|
||||
git clone https://github.com/conductor-oss/conductor.git
|
||||
cd conductor
|
||||
```
|
||||
|
||||
2. Run with Gradle:
|
||||
|
||||
```shell
|
||||
cd server
|
||||
../gradlew bootRun
|
||||
```
|
||||
|
||||
To use a custom configuration file:
|
||||
|
||||
```shell
|
||||
CONFIG_PROP=config.properties ../gradlew bootRun
|
||||
```
|
||||
|
||||
3. The server is now running:
|
||||
|
||||
| URL | Description |
|
||||
|:----|:---|
|
||||
| `http://localhost:8080` | Conductor UI |
|
||||
| `http://localhost:8080/swagger-ui/index.html` | REST API docs |
|
||||
| `http://localhost:8080/api/` | API base URL |
|
||||
|
||||
|
||||
## Running from a pre-compiled JAR
|
||||
|
||||
As an alternative to building from source, download and run the pre-compiled JAR:
|
||||
|
||||
```shell
|
||||
export CONDUCTOR_VER=3.21.10
|
||||
export REPO_URL=https://repo1.maven.org/maven2/org/conductoross/conductor-server
|
||||
curl $REPO_URL/$CONDUCTOR_VER/conductor-core-$CONDUCTOR_VER-boot.jar \
|
||||
--output conductor-core-$CONDUCTOR_VER-boot.jar
|
||||
java -jar conductor-core-$CONDUCTOR_VER-boot.jar
|
||||
```
|
||||
|
||||
|
||||
## Running the UI from source
|
||||
|
||||
### Prerequisites
|
||||
|
||||
- A running Conductor server on port 8080
|
||||
- [Node.js](https://nodejs.org) v18+
|
||||
- [Yarn](https://classic.yarnpkg.com/en/docs/install)
|
||||
|
||||
### Steps
|
||||
|
||||
```shell
|
||||
cd ui
|
||||
yarn install
|
||||
yarn run start
|
||||
```
|
||||
|
||||
The UI is accessible at [http://localhost:5000](http://localhost:5000).
|
||||
|
||||
To build compiled assets for production hosting:
|
||||
|
||||
```shell
|
||||
yarn build
|
||||
```
|
||||
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Reference in New Issue
Block a user