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feat(cluster): Add support for request proxying for scale out (#2385)

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* feat(cluster): initial commit for scale-out cluster

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

* feat(cluster): support shared storage scale out

This change introduces support for shared storage backed
zot cluster scale out.

New feature
Multiple stateless zot instances can run using the same shared
storage backend where each instance looks at a specific set
of repositories based on a siphash of the repository name to improve
scale as the load is distributed across multiple instances.
For a given config, there will only be one instance that can perform
dist-spec read/write on a given repository.

What's changed?
- introduced a transparent request proxy for dist-spec endpoints based on
siphash of repository name.
- new config for scale out cluster that specifies list of
cluster members.

Signed-off-by: Vishwas Rajashekar <vrajashe@cisco.com>

---------

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>
Signed-off-by: Vishwas Rajashekar <vrajashe@cisco.com>
Co-authored-by: Ramkumar Chinchani <rchincha@cisco.com>
This commit is contained in:
Vishwas R
2024-05-20 21:35:21 +05:30
committed by GitHub
parent be5ad66797
commit 5ae7a028d9
30 changed files with 2320 additions and 24 deletions
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@@ -591,6 +591,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dchest/siphash v1.2.3 h1:QXwFc8cFOR2dSa/gE6o/HokBMWtLUaNDVd+22aKHeEA=
github.com/dchest/siphash v1.2.3/go.mod h1:0NvQU092bT0ipiFN++/rXm69QG9tVxLAlQHIXMPAkHc=
github.com/depcheck-test/depcheck-test v0.0.0-20220607135614-199033aaa936 h1:foGzavPWwtoyBvjWyKJYDYsyzy+23iBV7NKTwdk+LRY=
github.com/depcheck-test/depcheck-test v0.0.0-20220607135614-199033aaa936/go.mod h1:ttKPnOepYt4LLzD+loXQ1rT6EmpyIYHro7TAJuIIlHo=
github.com/dgraph-io/badger/v3 v3.2103.5 h1:ylPa6qzbjYRQMU6jokoj4wzcaweHylt//CH0AKt0akg=