Deploying Submariner within 2 clusters using Calico

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Aug 21, 2025, 1:17:00 PMAug 21

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Hi,

I am able to connect 2 clusters using submariner but it seems the pod network is not routable.

here is the Output of

sysadmin@controller-0:/var/log$ subctl show all

Cluster "kubernetes"

✓ Detecting broker(s)

NAMESPACE NAME COMPONENTS GLOBALNET GLOBALNET CIDR DEFAULT GLOBALNET SIZE DEFAULT DOMAINS

submariner-k8s-broker submariner-broker service-discovery, connectivity no 242.0.0.0/8 65536

✓ Showing Connections

GATEWAY CLUSTER REMOTE IP NAT CABLE DRIVER SUBNETS STATUS RTT avg.

bp-qemu siteb 10.186.33.156 no libreswan 10.244.0.0/16, 172.18.0.0/16 connected

✓ Showing Endpoints

CLUSTER ENDPOINT IP PUBLIC IP CABLE DRIVER TYPE

sitea 10.190.44.53 165.225.213.76 libreswan local

sitea 10.190.44.54 165.225.213.102 libreswan local

siteb 10.186.33.156 165.225.213.70 libreswan remote

✓ Showing Gateways

NODE HA STATUS SUMMARY

controller-0 passive There are no connections

controller-1 active All connections (1) are established

✓ Showing Network details

Discovered network details via Submariner:

Network plugin: calico

Service CIDRs: [10.96.0.0/12]

Cluster CIDRs: [172.16.0.0/16]

ClustersetIP CIDR: 243.0.0.0/20

✓ Showing versions

COMPONENT REPOSITORY CONFIGURED RUNNING ARCH

submariner-gateway quay.io/submariner 0.21.0 release-0.21-2f0111a4d643 amd64

submariner-routeagent quay.io/submariner 0.21.0 release-0.21-2f0111a4d643 amd64

submariner-metrics-proxy quay.io/submariner 0.21.0 release-0.21-f8d812e114a6 amd64

submariner-operator quay.io/submariner 0.21.0 release-0.21-134dda265e13 amd64

submariner-lighthouse-agent quay.io/submariner 0.21.0 release-0.21-f69bcebac2ed amd64

submariner-lighthouse-coredns quay.io/submariner 0.21.0 release-0.21-f69bcebac2ed amd64

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