├── secrets.yaml
├── README.md
├── master.yaml
└── workers.yaml


/secrets.yaml:
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1 | apiVersion: v1
2 | kind: Secret
3 | metadata:
4 |   name: citus-secrets
5 | type: Opaque
6 | data:
7 |   password: <base64 encoded password>


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/README.md:
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1 | 1. Set password in secrets.yaml
2 | 2. Create Master node using master.yaml
3 | 3. Create Worker nodes using workers.yaml
4 | 
5 | Tested on Kubernetes 1.8
6 | 


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/master.yaml:
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 1 | kind: PersistentVolumeClaim
 2 | apiVersion: v1
 3 | metadata:
 4 |   name: citus-master-pvc
 5 | spec:
 6 |   accessModes:
 7 |     - ReadWriteOnce
 8 |   resources:
 9 |     requests:
10 |       storage: 50Gi
11 | ---
12 | apiVersion: v1
13 | kind: Service
14 | metadata:
15 |   name: citus-master
16 |   labels:
17 |     app: citus-master
18 | spec:
19 |   selector:
20 |     app: citus-master
21 |   clusterIP: None
22 |   ports:
23 |   - port: 5432
24 | ---
25 | apiVersion: apps/v1beta2
26 | kind: Deployment
27 | metadata:
28 |   name: citus-master
29 | spec:
30 |   selector:
31 |     matchLabels:
32 |       app: citus-master
33 |   replicas: 1
34 |   template:
35 |     metadata:
36 |       labels:
37 |         app: citus-master
38 |     spec:
39 |       containers:
40 |       - name: citus
41 |         image: citusdata/citus:7.3.0
42 |         ports:
43 |         - containerPort: 5432
44 |         env:
45 |         - name: PGDATA
46 |           value: /var/lib/postgresql/data/pgdata
47 |         - name: PGPASSWORD
48 |           valueFrom:
49 |             secretKeyRef:
50 |               name: citus-secrets
51 |               key: password
52 |         - name: POSTGRES_PASSWORD
53 |           valueFrom:
54 |             secretKeyRef:
55 |               name: citus-secrets
56 |               key: password
57 |         volumeMounts:
58 |         - name: storage
59 |           mountPath: /var/lib/postgresql/data
60 |         livenessProbe:
61 |           exec:
62 |             command:
63 |             - ./pg_healthcheck
64 |           initialDelaySeconds: 60
65 |       volumes:
66 |         - name: storage
67 |           persistentVolumeClaim:
68 |             claimName: citus-master-pvc


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/workers.yaml:
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 1 | apiVersion: v1
 2 | kind: Service
 3 | metadata:
 4 |   name: citus-workers
 5 |   labels:
 6 |     app: citus-workers
 7 | spec:
 8 |   selector:
 9 |     app: citus-workers
10 |   clusterIP: None
11 |   ports:
12 |   - port: 5432
13 | ---
14 | apiVersion: apps/v1beta2
15 | kind: StatefulSet
16 | metadata:
17 |   name: citus-worker
18 | spec:
19 |   selector:
20 |     matchLabels:
21 |       app: citus-workers
22 |   serviceName: citus-workers
23 |   replicas: 3
24 |   template:
25 |     metadata:
26 |       labels:
27 |         app: citus-workers
28 |     spec:
29 |       containers:
30 |       - name: citus-worker
31 |         image: citusdata/citus:7.3.0
32 |         lifecycle:
33 |           postStart:
34 |             exec:
35 |               command: 
36 |               - /bin/sh
37 |               - -c
38 |               - if [ ${POD_IP} ]; then psql --host=citus-master --username=postgres --command="SELECT * from master_add_node('${HOSTNAME}.citus-workers', 5432);" ; fi
39 |         ports:
40 |         - containerPort: 5432
41 |         env:
42 |         - name: POD_IP
43 |           valueFrom:
44 |             fieldRef:
45 |               fieldPath: status.podIP
46 |         - name: PGPASSWORD
47 |           valueFrom:
48 |             secretKeyRef:
49 |               name: citus-secrets
50 |               key: password
51 |         - name: POSTGRES_PASSWORD
52 |           valueFrom:
53 |             secretKeyRef:
54 |               name: citus-secrets
55 |               key: password
56 |         - name: PGDATA
57 |           value: /var/lib/postgresql/data/pgdata
58 |         volumeMounts:
59 |         - name: storage
60 |           mountPath: /var/lib/postgresql/data
61 |         livenessProbe:
62 |           exec:
63 |             command:
64 |             - ./pg_healthcheck
65 |           initialDelaySeconds: 60
66 |   volumeClaimTemplates:
67 |   - metadata:
68 |       name: storage
69 |     spec:
70 |       accessModes: [ "ReadWriteOnce" ]
71 |       resources:
72 |         requests:
73 |           storage: 50Gi


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