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Added support for external etcd to CacheServer#170

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gman0 wants to merge 2 commits intokcp-dev:mainfrom
gman0:cacheservers-external-etcd
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Added support for external etcd to CacheServer#170
gman0 wants to merge 2 commits intokcp-dev:mainfrom
gman0:cacheservers-external-etcd

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@gman0 gman0 commented Mar 4, 2026

Summary

This PR adds etcd configuration to CacheServer spec, making it possible to reference an external etcd cluster.

What Type of PR Is This?

/kind api-change
/kind feature

Related Issue(s)

Fixes #157

Release Notes

CacheServer now supports referencing an external etcd cluster

@kcp-ci-bot kcp-ci-bot added release-note Denotes a PR that will be considered when it comes time to generate release notes. kind/api-change Categorizes issue or PR as related to adding, removing, or otherwise changing an API dco-signoff: yes Indicates the PR's author has signed the DCO. labels Mar 4, 2026
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@kcp-ci-bot kcp-ci-bot added kind/feature Categorizes issue or PR as related to a new feature. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Mar 4, 2026
@gman0 gman0 force-pushed the cacheservers-external-etcd branch 2 times, most recently from 7c809b2 to 0ef3377 Compare March 5, 2026 12:33
if hasKcpTag {
switch kcpTag {
case "release-0.28", "release-0.29", "release-30":
t.Skip("running external etcd with cache-server is only supported with kcp >=0.31")
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We either do this, or add a feature gate and do #171.

@gman0 gman0 force-pushed the cacheservers-external-etcd branch 3 times, most recently from 25b6021 to 4e9c0f7 Compare March 5, 2026 17:45
hack/ci/run-e2e-tests.sh now exports kcp release (KCP_TAG passed from .prow.yaml)
as KCP_RELEASE environment variable.

This is a semi-temporary solution for checking what kcp version the operator is deploying.
@gman0 gman0 force-pushed the cacheservers-external-etcd branch from 4e9c0f7 to ae53d1a Compare March 5, 2026 17:50
On-behalf-of: @SAP robert.vasek@sap.com
Signed-off-by: Robert Vasek <robert.vasek@clyso.com>
@gman0 gman0 force-pushed the cacheservers-external-etcd branch from ae53d1a to a8fff5f Compare March 5, 2026 18:46
@gman0 gman0 added the tide/merge-method-merge Denotes a PR that should use a standard merge by tide when it merges. label Mar 5, 2026
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dco-signoff: yes Indicates the PR's author has signed the DCO. kind/api-change Categorizes issue or PR as related to adding, removing, or otherwise changing an API kind/feature Categorizes issue or PR as related to a new feature. release-note Denotes a PR that will be considered when it comes time to generate release notes. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. tide/merge-method-merge Denotes a PR that should use a standard merge by tide when it merges.

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feature: support external etcd in CacheServer

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