Couchdb management for docker and k8s

.gitignore

@@ -0,0 +1 @@
+.idea

Taskfile.yml

@@ -4,12 +4,18 @@ includes:
   docker-redis:
     taskfile: ./docker-redis/Taskfile.yml
     dir: ./docker-redis
+  docker-couchdb:
+    taskfile: ./docker-couchdb/Taskfile.yml
+    dir: ./docker-couchdb
   kube-kind:
     taskfile: ./kube-kind/Taskfile.yml
     dir: ./kube-kind
   kube-redis:
     taskfile: ./kube-redis/Taskfile.yml
     dir: ./kube-redis
+  kube-couchdb:
+    taskfile: ./kube-couchdb/Taskfile.yml
+    dir: ./kube-couchdb
 
 tasks:
   default: task --list-all

docker-couchdb/Taskfile.yml

@@ -0,0 +1,94 @@
+version: 3
+
+vars:
+  IMAGE: couchdb:latest
+  CONTAINER_NAME: couchdb-server
+  PORT: "5984"
+  COUCHDB_USER: admin
+  COUCHDB_PASSWORD: admin
+  ENDPOINT: http://{{.COUCHDB_USER}}:{{.COUCHDB_PASSWORD}}@localhost:{{.PORT}}
+
+includes:
+  variables:
+    taskfile: ../variables/Taskfile.yml
+    dir: ../variables
+
+tasks:
+  default: task --list-all
+
+  dbcliprereq:
+    silent: true
+    cmds:
+      - test -x "$(which curl)" || { echo "curl not available"; exit 1; }
+
+  create:
+    desc: Run the Couchdb container
+    cmds:
+      - docker run -d --name {{.CONTAINER_NAME}} -e COUCHDB_USER={{.COUCHDB_USER}} -e COUCHDB_PASSWORD={{.COUCHDB_PASSWORD}} -p {{.PORT}}:{{.PORT}} {{.IMAGE}}
+    silent: true
+
+  stop:
+    desc: Stop the Couchdb container
+    cmds:
+      - docker stop  {{.CONTAINER_NAME}}
+    silent: true
+
+  remove:
+    desc: Remove the Couchdb container
+    cmds:
+      - docker rm -f {{.CONTAINER_NAME}}
+    silent: true
+
+  logs:
+    desc: View the logs of the Couchdb container
+    cmds:
+      - docker logs {{.CONTAINER_NAME}}
+    silent: false
+
+  status:
+    desc: Check the status of the Couchdb container
+    cmds:
+      - docker ps -a --filter "name={{.CONTAINER_NAME}}"
+    silent: true
+
+  start:
+    desc: Start the Couchdb container
+    cmds:
+      - |
+        if docker ps -a --format '{{`{{.Names}}`}}' | grep -q '^{{.CONTAINER_NAME}}$'; then
+          if [ "$(docker inspect -f '{{`{{.State.Status}}`}}' {{.CONTAINER_NAME}})" = "exited" ]; then
+            docker start {{.CONTAINER_NAME}}
+          else
+            echo "Container is already running or in different state"
+          fi
+        else
+          echo "Container does not exist. Use 'task create' first"
+        fi
+    silent: true
+
+  listdbs:
+    desc: List the Couchdb databases
+    cmds:
+      - task: dbcliprereq
+      - curl '{{.ENDPOINT}}/_all_dbs'
+    silent: true
+
+  createdb:
+    desc: Create a couchdb database
+    vars:
+      DB_NAME: '{{.DB_NAME | default ""}}'
+    cmds:
+      - task: dbcliprereq
+      - task: variables:check-var
+        vars: { VAR_NAME: "DB_NAME", VAR_VALUE: "{{.DB_NAME}}" }
+      - curl -XPUT '{{.ENDPOINT}}/{{.DB_NAME}}'
+
+  test:
+    desc: Run a test command in the Couchdb container
+    cmds:
+      - task: create
+      - task: status
+      - task: logs
+      - task: remove
+      - task: status
+    silent: false

kube-couchdb/Taskfile.yml

@@ -0,0 +1,98 @@
+version: 3
+
+vars:
+  COUCHDB_USER: admin
+  COUCHDB_PASSWORD: admin
+  COUCHDB_USER_B64:
+    sh: 'echo -n "{{.COUCHDB_USER}}" | base64'
+  COUCHDB_PASSWORD_B64:
+    sh: 'echo -n "{{.COUCHDB_PASSWORD}}" | base64'
+  IMAGE: couchdb:latest
+  POD_NAME: couchdb-server
+  NAMESPACE: default
+
+tasks:
+
+  default: task --list-all
+
+  render-secret:
+    desc: Generates couchdb secret
+    env:
+      COUCHDB_USER: "{{.COUCHDB_USER_B64}}"
+      COUCHDB_PASSWORD: "{{.COUCHDB_PASSWORD_B64}}"
+      POD_NAME: "{{.POD_NAME}}"
+      NAMESPACE: "{{.NAMESPACE}}"
+    cmds:
+      - envsubst < couchdb-secret.tmpl.yaml > couchdb-secret.yaml
+    internal: true
+
+  render-deployment:
+    desc: Render couchdb deployment manifest
+    env:
+      COUCHDB_USER: "{{.COUCHDB_USER_B64}}"
+      COUCHDB_PASSWORD: "{{.COUCHDB_PASSWORD_B64}}"
+      POD_NAME: "{{.POD_NAME}}"
+      NAMESPACE: "{{.NAMESPACE}}"
+      IMAGE: "{{.IMAGE}}"
+    cmds:
+      - echo "Rendering manifest..."
+      - envsubst < couchdb.tmpl.yaml > couchdb.yaml
+    internal: true
+
+  render-templates:
+    internal: true
+    cmds:
+      - task: render-secret
+      - task: render-deployment
+
+  create:
+    desc: Run the Couchdb pod
+    cmds:
+      - task: render-templates
+      - kubectl --dry-run=server apply -f couchdb-secret.yaml
+      - kubectl --dry-run=server apply -f couchdb.yaml
+    silent: true
+
+  status:
+    desc: Check the status of the Couchdb pod
+    cmds:
+      - kubectl get pods -l app=couchdb
+    silent: true
+
+  wait:
+    desc: Wait for the Couchdb pod to be ready
+    cmds:
+      - kubectl wait --for=condition=Ready pod -l app=couchdb --timeout=60s
+    silent: true
+
+  remove:
+    desc: Remove the Couchdb pod
+    cmds:
+      - kubectl delete -f couchdb.tmpl.yaml
+    silent: true
+
+  logs:
+    desc: View the logs of the Couchdb pod
+    cmds:
+      - kubectl logs -l app=couchdb
+    silent: false
+
+  cli:
+    vars:
+      POD:
+        sh: |
+          kubectl get pods -l app=couchdb -o jsonpath='{.items[0].metadata.name}'
+    desc: Open a shell in the Couchdb pod
+    cmds:
+      - kubectl exec -it {{.POD}} -- couchdb-cli
+    silent: false
+
+  test:
+    desc: Run a test command in the Couchdb pod
+    cmds:
+      - task: create
+      - task: wait
+      - task: status
+      - task: logs
+      - task: remove
+    silent: false

kube-couchdb/couchdb-secret.tmpl.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: ${POD_NAME}-secret
+  namespace: ${NAMESPACE}
+type: Opaque
+data:
+  username: ${COUCHDB_USER}
+  password: ${COUCHDB_PASSWORD}

kube-couchdb/couchdb-secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: couchdb-server-secret
+  namespace: default
+type: Opaque
+data:
+  username: YWRtaW4=
+  password: YWRtaW4=

variables/Taskfile.yml

@@ -0,0 +1,15 @@
+version: 3
+
+tasks:
+  check-var:
+    desc: "Checks if a required variable is set"
+    cmds:
+      - |
+        VAR_NAME="{{.VAR_NAME}}"
+        VAR_VALUE="{{.VAR_VALUE}}"
+
+        if [ -z "$VAR_VALUE" ]; then
+          printf "Error: required variable '%s' is not set or empty.\n" "$VAR_NAME" >&2
+          exit 1
+        fi
+    silent: true