Privileged ServiceAccounts without rackAwarness enabled

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Valutazione

Difficoltà
3/5
Tempo stimato
1-2 giorni
Idoneità per principianti
72/100
Tipo di issue
Bug
Chiarezza
Specificata chiaramente
Stato di attività
Attiva
Stack tecnologico
kubernetes, rust
Ambito
backend, security

Direzione di ricerca

Start with hdfs_clusterrolebinding_nodes_controller.rs, where HdfsCluster ServiceAccounts are added to hdfs-clusterrolebinding-nodes, and review the spec.clusterConfig.rackAwareness checks used around core_site.rs. Update the reflector to watch full HdfsCluster objects with DeserializeGuard so invalid clusters do not block reconciliation. The change is done when only rack-awareness-enabled clusters appear as subjects, while existing bindings and unrelated cluster reconciliation remain correct; run the repository's relevant Rust tests if present.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

type/bug
Affected Stackable version

25.7.0, 25.11.0, 26.3.0 and 26.7.0

Affected Apache HDFS version

all

Current and expected behavior

Current

hdfs-operator maintains a single ClusterRoleBinding hdfs-clusterrolebinding-nodes to the ClusterRole hdfs-clusterrole-nodes, which grants cluster-wide get/list/watch on pods, nodes and endpoints (plus listeners and CRDs). It exists for the rack awareness topology provider.

The operator adds the ServiceAccount of every HdfsCluster as a subject, whether or not rackAwareness is set. The topology provider is only configured when rackAwareness is set (core_site.rs), so clusters without it get these rights without using them.

Expected

A HdfsCluster's ServiceAccount is only a subject of hdfs-clusterrolebinding-nodes when that cluster sets rackAwareness.

Fix

In hdfs_clusterrolebinding_nodes_controller.rs, only add clusters with spec.clusterConfig.rackAwareness set. The reflector currently watches PartialObjectMeta (no spec), so it needs to watch full objects, using DeserializeGuard so one broken HdfsCluster doesn't block the binding for all of them.

Out of scope: the ServiceAccount is shared by all roles, but only the NameNode runs the topology provider.

Possible solution

No response

Additional context

No response

Environment

No response

Would you like to work on fixing this bug?

No response

Lingua principale
Rust
Stelle
53
Fork
10
Merge medio
21h 32m
PR unite (30g)
10

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