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ArgoCD 3.3 and 3.4 Bring Cluster Pause, PreDelete Hooks, and OCI Support

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The CNCF-graduated ArgoCD project released versions 3.3 and 3.4 in the first half of 2026, introducing several enterprise-grade features for Kubernetes deployments. Version 3.3 added PreDelete Hooks, allowing jobs such as database backups or IP deregistration to run before resource deletion, making ArgoCD safer for stateful workloads. It also introduced shallow Git cloning at Depth=1, significantly reducing sync times and memory usage for large monorepos, alongside automatic OIDC token refresh to eliminate session timeouts. Version 3.4 addressed a critical operational gap by enabling per-cluster pause of reconciliation, giving SREs time to apply manual hotfixes without ArgoCD immediately reverting changes from Git. Additional updates include advanced UI filters, annotation-based filtering for ApplicationSets, and Microsoft Teams notifications via Adaptive Cards to replace discontinued Office 365 connectors.

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