Binary package installation

Released versions are available at GitHub.

Please note, that while you can install Designer from .tgz with Lite engine configured, you still need configured Kubernetes cluster to actually run scenarios in this mode - we recommend using Helm installation for that mode.

note

While you can install Designer from .tgz and you want to use the Lite engine on production, you will need a configured Kubernetes cluster to have a production setup. Using Helm Installation is recommended in this case.

Prerequisites

We assume that java (recommended version is JDK 11) is on PATH.

Please note that default environment variable configuration assumes that Flink, InfluxDB, Kafka and Schema registry are running on localhost with their default ports configured. See environment variables section for the details. Also, GRAFANA_URL is set to /grafana, which assumes that reverse proxy like NGINX is used to access both Designer and Grafana. For other setups you should change this value to absolute Grafana URL.

WORKING_DIR environment variable is used as base place where Nussknacker stores its data such as:

• logs
• embedded database files
• scenario attachments

Startup script

We provide following scripts:

• run.sh - to run in foreground, it's also suitable to use it for systemd service
• run-daemonized.sh - to run in background, we are using nussknacker-designer.pid to store PID of running process

File structure

Location	Usage in configuration	Description
$NUSSKNACKER_DIR/storage	Configured by STORAGE_DIR property	Location of HSQLDB database
$NUSSKNACKER_DIR/logs		Location of logs
$NUSSKNACKER_DIR/conf/application.conf	Configured by CONFIG_FILE property	Location of Nussknacker configuration. Can be overwritten or used next to other custom configuration. See Configuration document for details
$NUSSKNACKER_DIR/conf/logback.xml	Configured by LOGBACK_FILE property in standalone setup	Location of logging configuration. Can be overwritten to specify other logger logging levels
$NUSSKNACKER_DIR/conf/docker-logback.xml	Configured by LOGBACK_FILE property in docker setup	Location of logging configuration. Can be overwritten to specify other logger logging levels
$NUSSKNACKER_DIR/conf/users.conf	Configured by AUTHENTICATION_USERS_FILE property	Location of Nussknacker Component Providers
$NUSSKNACKER_DIR/model/defaultModel.jar		JAR with generic model (base components library)
$NUSSKNACKER_DIR/model/flinkExecutor.jar		JAR with Flink executor, used by scenarios running on Flink
$NUSSKNACKER_DIR/components		Directory with Nussknacker Component Provider JARS
$NUSSKNACKER_DIR/lib		Directory with Nussknacker base libraries
$NUSSKNACKER_DIR/managers		Directory with Nussknacker Deployment Managers

Logging

We use Logback for logging configuration. By default, the logs are placed in ${NUSSKNACKER_DIR}/logs, with sensible rollover configuration.
Please remember that these are logs of Nussknacker Designer, to see/configure logs of other components (e.g. Flink) please consult their documentation.

Systemd service

You can set up Nussknacker as a systemd service using our example unit file.

1. Download distribution from GitHub
2. Unzip it to /opt/nussknacker
3. sudo touch /lib/systemd/system/nussknacker.service
4. edit /lib/systemd/system/nussknacker.service file and add write content of Systemd unit file
5. sudo systemctl daemon-reload
6. sudo systemctl enable nussknacker.service
7. sudo systemctl start nussknacker.service

You can check Nussknacker logs with sudo journalctl -u nussknacker.service command.

Sample systemd-unit-file

[Unit]
Description=Nussknacker

StartLimitBurst=5
StartLimitIntervalSec=600

[Service]
SyslogIdentifier=%N

WorkingDirectory=/opt/nussknacker
ExecStart=/opt/nussknacker/bin/run.sh
RuntimeDirectory=%N
RuntimeDirectoryPreserve=restart

SuccessExitStatus=143
Restart=always
RestartSec=60

[Install]
WantedBy=default.target

Configuring the Designer with Nginx-http-public-path

Sample nginx proxy configuration serving Nussknacker Designer UI under specified my-custom-path path. It assumes Nussknacker itself is available under http://designer:8080 Don't forget to specify HTTP_PUBLIC_PATH=/my-custom-path environment variable in Nussknacker Designer.

http {
  server {
    location / {
      proxy_pass http://designer:8080;
    }
    location /my-custom-path/ {
      rewrite           ^/my-custom-path/?(.*) /$1;
    }
  }
}