kubectl apply

• The declarative approach to create/update kubernetes objects
• If the config file is new, the object gets created
• If the config file is modified, the object gets updated

• If the config file is unchanged, the object does not alter

• The config of the last applied object is stored as json in an annotation at the live object

• metadata.annotations.kubectl.kubernetes.io/last-applied-configuration

# Apply a single config file
kubectl apply -f "manifest.yaml"
kubectl apply -f "manifest1.yaml" -f "manifest2.yaml"

# Apply config files from a whole directory
kubectl apply -f "directory/"

# Apply from a directory containing kustomization.yaml
kubectl apply -k "base/"

# Apply from STDIN
kube apply -f -