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Deploying ToolJet on Kubernetes

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You should setup a PostgreSQL database manually to be used by ToolJet. You can find the system requirements here.

ToolJet runs with built-in Redis for multiplayer editing and background jobs. When running separate worker containers or multi-pod setup, an external Redis instance is required for job queue coordination.

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To use ToolJet AI features in your deployment, make sure to whitelist https://api-gateway.tooljet.com and https://python-server.tooljet.com in your network settings.

Follow the steps below to deploy ToolJet on a Kubernetes cluster.

  1. Setup PostgreSQL databases

    ToolJet requires two separate PostgreSQL databases. We do not have plans to support other databases such as MySQL.

  2. Create a Kubernetes secret with name server

    Configure all required environment variables for ToolJet deployment:

    Application Configuration​

    TOOLJET_HOST=<Endpoint url>
    LOCKBOX_MASTER_KEY=<generate using openssl rand -hex 32>
    SECRET_KEY_BASE=<generate using openssl rand -hex 64>

    Database 1: Application Database (PG_DB)​

    This database stores ToolJet's core application data including users, apps, and configurations.

    PG_USER=<username>
    PG_HOST=<postgresql-database-host>
    PG_PASS=<password>
    PG_DB=tooljet_production # Must be a unique database name (do not reuse across deployments)

    Database 2: ToolJet Database (TOOLJET_DB)​

    ToolJet Database is a built-in feature that allows you to build apps faster and manage data with ease. Learn more about this feature here.

    TOOLJET_DB=tooljet_db # Must be a unique database name (separate from PG_DB and not shared)
    TOOLJET_DB_HOST=<postgresql-database-host>
    TOOLJET_DB_USER=<username>
    TOOLJET_DB_PASS=<password>
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    Critical: TOOLJET_DB and PG_DB must be different database names. Using the same database for both will cause deployment failure.

    Why does ToolJet require two databases?

    ToolJet requires two separate database names for optimal functionality:

    • PG_DB (Application Database): Stores ToolJet's core application data including user accounts, application definitions, permissions, and configurations
    • TOOLJET_DB (Internal Database): Stores ToolJet Database feature data including internal metadata and tables created by users within the ToolJet Database feature

    This separation ensures data isolation and optimal performance for both application operations and user-created database tables.

    Deployment Flexibility:

    • Same PostgreSQL instance (recommended for most use cases): Create both databases within a single PostgreSQL server
    • Separate PostgreSQL instances (optional, for scale): Host each database on different PostgreSQL servers based on your performance and isolation requirements

    PostgREST Configuration (Required)​

    PostgREST provides the REST API layer for ToolJet Database. These variables are mandatory:

    PGRST_HOST=localhost:3001
    PGRST_LOG_LEVEL=info
    PGRST_DB_PRE_CONFIG=postgrest.pre_config
    PGRST_SERVER_PORT=3001
    PGRST_JWT_SECRET=<generate using openssl rand -hex 32>
    PGRST_DB_URI=postgres://TOOLJET_DB_USER:TOOLJET_DB_PASS@TOOLJET_DB_HOST:5432/TOOLJET_DB
    tip

    Use openssl rand -hex 32 to generate a secure value for PGRST_JWT_SECRET. PostgREST will refuse authentication requests if this parameter is not set.

  3. Create a Kubernetes deployment

    kubectl apply -f https://tooljet-deployments.s3.us-west-1.amazonaws.com/kubernetes/deployment.yaml
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    The file given above is just a template and might not suit production environments. You should download the file and configure parameters such as the replica count and environment variables according to your needs.

    If there are self signed HTTPS endpoints that ToolJet needs to connect to, please make sure that NODE_EXTRA_CA_CERTS environment variable is set to the absolute path containing the certificates. You can make use of kubernetes secrets to mount the certificate file onto the containers.

  4. Verify if ToolJet is running

    kubectl get pods

  5. Create a Kubernetes services to publish the Kubernetes deployment that you've created. This step varies with cloud providers. We have a template for exposing the ToolJet server as a service using an AWS loadbalancer.
    Examples:

Workflows​

ToolJet Workflows allows users to design and execute complex, data-centric automations using a visual, node-based interface. This feature enhances ToolJet's functionality beyond building secure internal tools, enabling developers to automate complex business processes.

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For users migrating from Temporal-based workflows, please refer to the Workflow Migration Guide.

Enabling Workflow Scheduling​

To activate workflow scheduling, set the following environment variables in your ToolJet deployment:

# Worker Mode (required)
# Set to 'true' to enable job processing
# Set to 'false' or unset for HTTP-only mode (scaled deployments)
WORKER=true

# Workflow Processor Concurrency (optional)
# Number of workflow jobs processed concurrently per worker
# Default: 5
TOOLJET_WORKFLOW_CONCURRENCY=5

Environment Variable Details:

  • WORKER (required): Enables job processing. Set to true to activate workflow scheduling
  • TOOLJET_WORKFLOW_CONCURRENCY (optional): Controls the number of workflow jobs processed concurrently per worker instance. Default is 5 if not specified
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External Redis Requirement: When running separate worker containers or multiple instances, an external stateful Redis instance is required for job queue coordination. The built-in Redis only works when the server and worker are in the same container instance (single instance deployment).

Deploying Redis for Workflows​

Deploy a stateful Redis instance using the following example configuration:

kubectl apply -f https://tooljet-deployments.s3.us-west-1.amazonaws.com/kubernetes/redis-stateful.yaml
Built-in Redis vs External Redis

ToolJet images include a built-in Redis instance for development. When deploying workflows in production, you must update your deployment configuration to use the external stateful Redis:

Change REDIS_HOST from localhost to redis-service in your deployment YAML:

- name: REDIS_HOST
  value: redis-service # Changed from localhost
- name: REDIS_PORT
  value: "6379"

This example deployment creates:

  • A StatefulSet with persistent storage for Redis
  • A headless Service for stable network identity
  • ConfigMap with production-ready Redis configuration
  • A Secret for optional password authentication
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Update the redis-secret in the Redis deployment YAML with a secure password before deploying to production.

This is an example configuration that you can customize to your needs. However, AOF (Append Only File) persistence and maxmemory-policy noeviction are critical settings that must be maintained for BullMQ job queue reliability.

After deploying Redis, configure ToolJet to connect to it using these environment variables in your deployment:

REDIS_HOST=redis-service.default.svc.cluster.local
REDIS_PORT=6379
REDIS_PASSWORD=your-secure-redis-password-here  # Match the password in redis-secret

Optional Redis Configuration:

  • REDIS_USERNAME= - Redis username (ACL)
  • REDIS_DB=0 - Redis database number (default: 0)
  • REDIS_TLS=false - Enable TLS/SSL (set to 'true')

Note: Ensure that these environment variables are added to your Kubernetes deployment configuration (e.g., in your deployment.yaml file or Kubernetes secret). For additional environment variables, refer to our environment variables documentation.

Upgrading to the Latest LTS Version​

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If this is a new installation of the application, you may start directly with the latest version. This upgrade guide is only for existing installations.

New LTS versions are released every 3-5 months with an end-of-life of atleast 18 months. To check the latest LTS version, visit the ToolJet Docker Hub page. The LTS tags follow a naming convention with the prefix LTS- followed by the version number, for example tooljet/tooljet:ee-lts-latest.

Prerequisites for Upgrading​

Critical: Backup Your PostgreSQL Instance

Before starting the upgrade process, perform a comprehensive backup of your PostgreSQL instance to prevent data loss. Your backup must include both required databases:

  1. PG_DB (Application Database) - Contains users, apps, and configurations
  2. TOOLJET_DB (Internal Database) - Contains ToolJet Database feature data

Ensure both databases are included in your backup before proceeding with the upgrade.

  • Users on versions earlier than v2.23.0-ee2.10.2 must first upgrade to this version before proceeding to the latest LTS version.
  • ToolJet 3.0+ Requirement: Deploying ToolJet Database is mandatory from ToolJet 3.0 onwards. For information about breaking changes, see the ToolJet 3.0 Migration Guide.

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