chore: lint yaml (#19)

.markdownlint.yml

@@ -1,2 +1,3 @@
+---
 MD013: false # long lines
 MD034: false # bare urls

.yamllint

@@ -0,0 +1,6 @@
+extends: default
+
+rules:
+  line-length: disable
+  comments:
+    min-spaces-from-content: 1

05-pods/01-simple-pod.yml

@@ -1,8 +1,9 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
   name: simple-pod
 spec:
   containers:
-  - name: simple-pod
+    - name: simple-pod
-    image: mhausenblas/simpleservice:0.5.0
+      image: mhausenblas/simpleservice:0.5.0

06-label-annotation/01-simple-pod.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
@@ -7,5 +8,5 @@ metadata:
     tier: backend
 spec:
   containers:
-  - name: simple-pod
+    - name: simple-pod
-    image: mhausenblas/simpleservice:0.5.0
+      image: mhausenblas/simpleservice:0.5.0

06-label-annotation/02-nginx.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
@@ -7,5 +8,5 @@ metadata:
     tier: frontend
 spec:
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx

07-deployment/01-simple-deployment.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -13,7 +14,7 @@ spec:
         app: simple-deployment
     spec:
       containers:
-      - name: simple-pod
+        - name: simple-pod
-        image: mhausenblas/simpleservice:0.4.0
+          image: mhausenblas/simpleservice:0.4.0
-        ports:
+          ports:
-        - containerPort: 9876
+            - containerPort: 9876

08-service/01-simple-deployment.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -7,13 +8,13 @@ spec:
   selector:
     matchLabels:
       app: simple-deployment
-  template:    
+  template:
     metadata:
       labels:
         app: simple-deployment
     spec:
       containers:
-      - name: simple-pod
+        - name: simple-pod
-        image: mhausenblas/simpleservice:0.4.0
+          image: mhausenblas/simpleservice:0.4.0
-        ports:
+          ports:
-        - containerPort: 9876
+            - containerPort: 9876

08-service/02-bash.yml

@@ -1,8 +1,9 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
   name: bash
 spec:
   containers:
-  - name: bash
+    - name: bash
-    image: nginx
+      image: nginx

08-service/03-simple-service.yml

@@ -1,10 +1,11 @@
+---
 apiVersion: v1
 kind: Service
 metadata:
   name: simple-service
 spec:
   ports:
-  - port: 80
+    - port: 80
-    targetPort: 9876
+      targetPort: 9876
   selector:
     app: simple-deployment

08-service/04-ingress.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: extensions/v1beta1
 kind: Ingress
 metadata:
@@ -8,4 +9,3 @@ spec:
   backend:
     serviceName: simple-service
     servicePort: 80
-

09-cronjob/01-simple-cronjob.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1beta1
 kind: CronJob
 metadata:
@@ -10,6 +11,6 @@ spec:
         spec:
           restartPolicy: Never
           containers:
-          - name: pi
+            - name: pi
-            image: perl
+              image: perl
-            command: ["perl",  "-Mbignum=bpi", "-wle", "print bpi(100)"]
+              command: ["perl", "-Mbignum=bpi", "-wle", "print bpi(100)"]

09-cronjob/02-simple-job.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:
@@ -6,7 +7,7 @@ spec:
   template:
     spec:
       containers:
-      - name: c
+        - name: c
-        image: busybox
+          image: busybox
-        command: ["sh", "-c", "echo Processing item $ITEM && sleep 5"]
+          command: ["sh", "-c", "echo Processing item $ITEM && sleep 5"]
-      restartPolicy: Never
+      restartPolicy: Never

10-secrets/01-secrets.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Secret
 metadata:
@@ -5,4 +6,4 @@ metadata:
 type: Opaque
 data:
   username: YWRtaW4=
-  password: MWYyZDFlMmU2N2Rm
+  password: MWYyZDFlMmU2N2Rm

11-probes/01-liveness-probe.yml

@@ -1,15 +1,16 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
   name: liveness-probe-pod
 spec:
   containers:
-  - name: liveness-probe-pod
+    - name: liveness-probe-pod
-    image: nginx
+      image: nginx
-    livenessProbe:
+      livenessProbe:
-      exec:
+        exec:
-        command:
+          command:
-          - exit
+            - exit
-          - "1"
+            - "1"
-      initialDelaySeconds: 5
+        initialDelaySeconds: 5
-      periodSeconds: 5
+        periodSeconds: 5

11-probes/02-readiness-probe.yml

@@ -14,17 +14,17 @@ spec:
         app: readiness-deployment
     spec:
       containers:
-      - name: readiness-probe-pod
+        - name: readiness-probe-pod
-        image: mhausenblas/simpleservice:0.4.0
+          image: mhausenblas/simpleservice:0.4.0
-        ports:
+          ports:
-          - containerPort: 9876
+            - containerPort: 9876
-        readinessProbe:
+          readinessProbe:
-          exec:
+            exec:
-            command:
+              command:
-              - exit
+                - exit
-              - "1"
+                - "1"
-          initialDelaySeconds: 5
+            initialDelaySeconds: 5
-          periodSeconds: 5
+            periodSeconds: 5
 ---
 apiVersion: v1
 kind: Service
@@ -32,7 +32,7 @@ metadata:
   name: readiness-service
 spec:
   ports:
-  - port: 80
+    - port: 80
-    targetPort: 9876
+      targetPort: 9876
   selector:
     app: readiness-deployment

13-affinity-anti-affinity/01-pod-anti-affinity.yml

@@ -17,8 +17,8 @@ spec:
                   - nginx-pod-anti-affinity
           topologyKey: kubernetes.io/hostname
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx
 ---
 apiVersion: v1
 kind: Pod
@@ -38,5 +38,5 @@ spec:
                   - nginx-pod-anti-affinity
           topologyKey: kubernetes.io/hostname
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx

13-affinity-anti-affinity/02-node-affinity.yml

@@ -9,13 +9,13 @@ spec:
       requiredDuringSchedulingIgnoredDuringExecution:
         nodeSelectorTerms:
           - matchExpressions:
-            - key: gpu
+              - key: gpu
-              operator: In
+                operator: In
-              values:
+                values:
-                - "yes"
+                  - "yes"
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx
 ---
 apiVersion: v1
 kind: Pod
@@ -27,10 +27,10 @@ spec:
       requiredDuringSchedulingIgnoredDuringExecution:
         nodeSelectorTerms:
           - matchExpressions:
-            - key: gpu
+              - key: gpu
-              operator: In
+                operator: In
-              values:
+                values:
-                - "no"
+                  - "no"
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx

14-pdb/kind.yml

@@ -1,7 +1,8 @@
+---
 # three node (two workers) cluster config
 kind: Cluster
 apiVersion: kind.sigs.k8s.io/v1alpha3
 nodes:
-- role: control-plane
+  - role: control-plane
-- role: worker
+  - role: worker
-- role: worker
+  - role: worker

15-hpa-vpa/02-hpa.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: autoscaling/v1
 kind: HorizontalPodAutoscaler
 metadata:
@@ -9,4 +10,4 @@ spec:
     apiVersion: extensions/v1beta1
     kind: Deployment
     name: simple-deployment
-targetCPUUtilizationPercentage: 80
+targetCPUUtilizationPercentage: 80

16-sidecar-containers/01-sidecar.yml

@@ -1,21 +1,22 @@
+---
 apiVersion: v1
 kind: Pod
 metadata:
   name: two-containers
 spec:
   volumes:
-  - name: shared-data
+    - name: shared-data
-    emptyDir: {}
+      emptyDir: {}
   containers:
-  - name: nginx
+    - name: nginx
-    image: nginx
+      image: nginx
-    volumeMounts:
+      volumeMounts:
-    - name: data
+        - name: data
-      mountPath: /usr/share/nginx/html
+          mountPath: /usr/share/nginx/html
-  - name: debian
+    - name: debian
-    image: debian
+      image: debian
-    volumeMounts:
+      volumeMounts:
-    - name: data
+        - name: data
-      mountPath: /pod-data
+          mountPath: /pod-data
-    command: ["/bin/sh"]
+      command: ["/bin/sh"]
-    args: ["-c", "echo Hello from the debian container > /pod-data/index.html"]
+      args: ["-c", "echo Hello from the debian container > /pod-data/index.html"]

17-volumes/01-simple-mysql-pv.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: PersistentVolume
 metadata:

17-volumes/02-simple-mysql-pvc.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:

17-volumes/03-simple-mysql-deployment.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -14,18 +15,18 @@ spec:
         app: mysql
     spec:
       containers:
-      - image: mysql:5.6
+        - image: mysql:5.6
-        name: mysql
-        env:
-        - name: MYSQL_ROOT_PASSWORD
-          value: password
-        ports:
-        - containerPort: 3306
           name: mysql
-        volumeMounts:
+          env:
-        - name: mysql-persistent-storage
+            - name: MYSQL_ROOT_PASSWORD
-          mountPath: /var/lib/mysql
+              value: password
+          ports:
+            - containerPort: 3306
+              name: mysql
+          volumeMounts:
+            - name: mysql-persistent-storage
+              mountPath: /var/lib/mysql
       volumes:
-      - name: mysql-persistent-storage
+        - name: mysql-persistent-storage
-        persistentVolumeClaim:
+          persistentVolumeClaim:
-          claimName: mysql-pv-claim
+            claimName: mysql-pv-claim

17-volumes/04-simple-mysql-service.yml

@@ -1,10 +1,11 @@
+---
 apiVersion: v1
 kind: Service
 metadata:
   name: mysql
 spec:
   ports:
-  - port: 3306
+    - port: 3306
   selector:
     app: mysql
-  clusterIP: None
+  clusterIP: None

18-stateful-set/03-statefulset.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
@@ -14,19 +15,19 @@ spec:
         app: nginx # has to match .spec.selector.matchLabels
     spec:
       containers:
-      - name: nginx
+        - name: nginx
-        image: k8s.gcr.io/nginx-slim:0.8
+          image: k8s.gcr.io/nginx-slim:0.8
-        ports:
+          ports:
-        - containerPort: 80
+            - containerPort: 80
-          name: web
+              name: web
-        volumeMounts:
+          volumeMounts:
-        - name: www
+            - name: www
-          mountPath: /usr/share/nginx/html
+              mountPath: /usr/share/nginx/html
   volumeClaimTemplates:
-  - metadata:
+    - metadata:
-      name: www
+        name: www
-    spec:
+      spec:
-      accessModes: [ "ReadWriteOnce" ]
+        accessModes: ["ReadWriteOnce"]
-      resources:
+        resources:
-        requests:
+          requests:
-          storage: 1Gi
+            storage: 1Gi

99-good-practices/yamllint

@@ -3,4 +3,4 @@ extends: default
 rules:
   line-length: disable
   comments:
-min-spaces-from-content: 1
+    min-spaces-from-content: 1