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security: convert NodePort to ClusterIP for better isolation

On some providers (notably: DigitalOcean) NodePort services are not exposed to
the outside world. But this is not what the Kubernetes spec describes:
https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services-service-types

Thus, there is a risk that NodePort services are exposed to the outside world
in some context. To avoid this, we convert all NodePort to ClusterIP resources.
This commit is contained in:
Régis Behmo 2021-11-29 22:17:12 +01:00 committed by Régis Behmo
parent 3ad68ab782
commit e5b63604de
2 changed files with 8 additions and 7 deletions

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@ -2,6 +2,7 @@
Note: Breaking changes between versions are indicated by "💥".
- [Security] On Kubernetes, convert all NodePort services to ClusterIP to guarantee network isolation from outside the cluster.
- 💥[Improvement] Drop Python 3.5 compatibility.
- [Bugfix] Fix docker-compose project name in development on nightly branch.
- 💥[Bugfix] No longer track the Tutor version number in resource labels (and label selectors, which breaks the update of Deployment resources), but instead do so in resource annotations.

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@ -21,7 +21,7 @@ kind: Service
metadata:
name: cms
spec:
type: NodePort
type: ClusterIP
ports:
- port: 8000
protocol: TCP
@ -35,7 +35,7 @@ kind: Service
metadata:
name: lms
spec:
type: NodePort
type: ClusterIP
ports:
- port: 8000
protocol: TCP
@ -49,7 +49,7 @@ kind: Service
metadata:
name: elasticsearch
spec:
type: NodePort
type: ClusterIP
ports:
- port: 9200
protocol: TCP
@ -63,7 +63,7 @@ kind: Service
metadata:
name: mongodb
spec:
type: NodePort
type: ClusterIP
ports:
- port: 27017
protocol: TCP
@ -77,7 +77,7 @@ kind: Service
metadata:
name: mysql
spec:
type: NodePort
type: ClusterIP
ports:
- port: 3306
protocol: TCP
@ -91,7 +91,7 @@ kind: Service
metadata:
name: redis
spec:
type: NodePort
type: ClusterIP
ports:
- port: {{ REDIS_PORT }}
protocol: TCP
@ -105,7 +105,7 @@ kind: Service
metadata:
name: smtp
spec:
type: NodePort
type: ClusterIP
ports:
- port: 8025
protocol: TCP