mirror of
https://github.com/kyverno/kyverno.git
synced 2025-03-09 17:37:12 +00:00
3cf9141f4d
* initial commit * background policy validation * correct message * skip non-background policy process for add/update * add Generate Request CR * generate Request Generator Initial * test generate request CR generation * initial commit gr generator * generate controller initial framework * add crd for generate request * gr cleanup controller initial commit * cleanup controller initial * generate mid-commit * generate rule processing * create PV on generate error * embed resource type * testing phase 1- generate resources with variable substitution * fix tests * comment broken test #586 * add printer column for state * return if existing resource for clone * set resync time to 2 mins & remove resource version check in update handler for gr * generate events for reporting * fix logs * initial commit * fix trailing quote in patch * remove comments * initial condition (equal & notequal) * initial support for conditions * initial support fo conditions in generate * support precondition checks * cleanup * re-evaluate GR on namespace update using dynamic informers * add status for generated resources * display loaded variable SA * support delete cleanup of generate request main resources * fix log * remove namespace from SA username * support multiple variables per statement for scalar values * fix fail variables * add check for userInfo * validation checks for conditions * update policy * refactor logs * code review * add openapispec for clusterpolicy preconditions * Update documentation * CR fixes * documentation * CR fixes * update variable * fix logs * update policy * pre-defined variables (serviceAccountName & serviceAccountNamespace) * update test
34 lines
No EOL
1 KiB
Markdown
34 lines
No EOL
1 KiB
Markdown
# Default deny all ingress traffic
|
|
|
|
By default, Kubernetes allows communications across all pods within a cluster. Network policies and, a CNI that supports network policies, must be used to restrict communinications.
|
|
|
|
A default `NetworkPolicy` should be configured for each namespace to default deny all ingress traffic to the pods in the namespace. Application teams can then configure additional `NetworkPolicy` resources to allow desired traffic to application pods from select sources.
|
|
|
|
## Policy YAML
|
|
|
|
[add_network_policy.yaml](best_practices/add_network_policy.yaml)
|
|
|
|
````yaml
|
|
apiVersion: kyverno.io/v1
|
|
kind: ClusterPolicy
|
|
metadata:
|
|
name: add-networkpolicy
|
|
spec:
|
|
rules:
|
|
- name: default-deny-ingress
|
|
match:
|
|
resources:
|
|
kinds:
|
|
- Namespace
|
|
name: "*"
|
|
generate:
|
|
kind: NetworkPolicy
|
|
name: default-deny-ingress
|
|
namespace: "{{request.object.metadata.name}}"
|
|
data:
|
|
spec:
|
|
# select all pods in the namespace
|
|
podSelector: {}
|
|
policyTypes:
|
|
- Ingress
|
|
```` |