Jelastic automatically performs redirect of the incoming requests to the application hosted within a container.
During a node creation, the platform detects the ports which are listened on the TCP level. The commonly used for standard services (e.g. SSH, mail, databases, etc.) are automatically filtered. The first among the remaining ports becomes the container entry point so that all incoming requests are forwarded to it.
This process is performed on each container launch, so the corresponding application becomes available over the embedded Shared Load Balancer just after being deployed, without any manual intervention required.
However, in case you need to disable or adjust this functionality (e.g. if it exposes application admin panel), you can manually change the auto-redirect settings during the container creation. For that, switch to the Variables
section, add the dedicated JELASTIC_EXPOSE
parameter and set its value based on your needs:
Alternatively, a comma-separated list of ports can be provided via the JELASTIC_PRIORITY_PORTS variable. The platform checks them one by one, configuring the entry point redirect to the first active service discovered. This option can speed up container startup time compared to the all ports analysis during the default auto-redirect flow.
- if the exact port is specified via the JELASTIC_EXPOSE variable, the JELASTIC_PRIORITY_PORTS is ignored
- if no services are discovered on the JELASTIC_PRIORITY_PORTS, the default auto-redirect flow is called
To get even greater flexibility over the node accessibility, you can customize your container firewall