kubectl describe deployment -A

kubectl describe deployment -A | grep "StrategyType"
StrategyType:       RollingUpdate
StrategyType:       Recreate

kubectl describe deployment -A | grep RollingUpdateStrategy

See also

• Kubernetes deployments, strategies: kind: Deployment, Strategies: Recreate or RollingUpdate, kubectl [ create | describe | get | scale | rollout | deployment/ ], Kubernetes Canary Deployments, deployment.kubernetes.io