Help Center/ Cloud Container Engine/ User Guide/ Network/ Ingresses/ LoadBalancer Ingresses/ Configuring Multiple Ingresses to Use the Same External ELB Port

Updated on 2025-01-07 GMT+08:00

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Configuring Multiple Ingresses to Use the Same External ELB Port

In a cluster, multiple ingresses can share a listener, allowing them to use the same port on a single load balancer. If two ingresses have different listener configurations, the listener configuration of the earlier ingress (known as the first route) will be used. For details about how to check the first route, see How Can I Determine Which Ingress the Listener Settings Have Been Applied To?

The following table lists listener parameters.

Listener	Annotation	Documentation
Configuring ELB Certificates	kubernetes.io/elb.tls-certificate-ids kubernetes.io/elb.tls-ciphers-policy	Configuring an HTTPS Certificate for a LoadBalancer Ingress
Using HTTP/2	kubernetes.io/elb.http2-enable	Configuring HTTP/2 for a LoadBalancer Ingress
Configuring Timeout for an Ingress	kubernetes.io/elb.keepalive_timeout kubernetes.io/elb.client_timeout kubernetes.io/elb.member_timeout	Configuring Timeout for a LoadBalancer Ingress
Configuring a Blocklist/Trustlist	kubernetes.io/elb.acl-id kubernetes.io/elb.acl-status kubernetes.io/elb.acl-type	Configuring a Blocklist/Trustlist Access Policy for a LoadBalancer Ingress
Configuring an HTTP/HTTPS Header	kubernetes.io/elb.x-forwarded-port kubernetes.io/elb.x-forwarded-for-port kubernetes.io/elb.x-forwarded-host	Configuring an HTTP/HTTPS Header for a LoadBalancer Ingress
Enabling GZIP	kubernetes.io/elb.gzip-enabled	Configuring GZIP Data Compression for a LoadBalancer Ingress

If different listeners are configured for different ingresses, synchronize the listener configurations of these ingresses. To do so, perform the following operations:

Log in to the CCE console and click the cluster name to access the cluster console.
In the navigation pane, choose Services & Ingresses. Then, click the Ingresses tab, and choose More > Update in the Operation column.
Synchronize Configuration is available if the listener configuration of the ingress differs from that of the ELB. Click Synchronize Configuration. Then, the listener configuration will be automatically synchronized.