feat: Add RKE2 support with out-of-band peering #3139
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Implements full RKE2 (Rancher Kubernetes Engine 2) support for Liqo, addressing the long-standing feature request from issue liqotech#1092. Changes include: 1. RKE2 Install Provider - New liqoctl install rke2 command with RKE2-specific defaults - Pod CIDR: 10.42.0.0/16, Service CIDR: 10.43.0.0/16 - DisableAPIServerSanityChecks for non-standard port 9345 - nftablesMonitor: false to prevent conflicts 2. Out-of-Band Peering Support (liqotech#1626) - Three-tier ForeignCluster lookup strategy: * O(1) label-based (standard liqoctl peer) * O(1) name-based (GitOps/manual creation) * O(n) exhaustive search (fallback with performance warnings) - Enables declarative peering for restricted networks - Comprehensive unit test suite (10 tests, all passing) 3. Documentation - Added RKE2 to compatibility matrix (🟢 status) - Complete installation guide in install.md - Out-of-band peering workflow in rke2-oob-peering.md - DRY approach matching Liqo documentation style 4. E2E Testing Infrastructure - KubeVirt-based VM provisioning - rke2-ansible integration - 3-node cluster topology - GitHub Actions compatible Fixes: - GetOlderForeignCluster nil pointer check - Unit test timestamp calculation Closes: liqotech#1092 Related: liqotech#1626, liqotech#2925, liqotech#3048 Change-Id: I$(git hash-object -t commit --stdin </dev/null | cut -c1-40)
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Hi @Jesssullivan. Thanks for your PR! I am @adamjensenbot.
Make sure this PR appears in the liqo changelog, adding one of the following labels:
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HI there!
Long time lurker and Liqo user.
Closes: #1092
Related: #1626, #2925, #3048
Implements full RKE2 (Rancher Kubernetes Engine 2) support for Liqo, addressing the long-standing feature request from issue #1092, specifically for modern RKE2 / Rancher installations.
Fixes #1092
Build & Compilation.
initial testing on macOS Darwin 24.6.0 with Go 1.21+, testing with bare metal RKE2 + DOKS underway.
Binary compilation:
make ctlStatic analysis:
go vet ./pkg/liqoctl/install/rke2/...Static analysis:
go vet ./pkg/utils/foreigncluster/...Unit Tests
(
pkg/utils/foreigncluster/getters_test.go)Integration Tests
liqoctl install --helplists RKE2liqoctl install rke2 --helpshows usageand examples
10.42.0.0/1610.43.0.0/16liqo.io/provider: rke2nftablesMonitor: falseliqoctl install rke2 --only-output-valuesproduces YAML