Initial commit

diagnose pod handling

ATM we can't create a cluster b/c the couchdb pods aren't ready

Dockerfile

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+FROM golang:1.9-alpine3.6
+
+RUN apk add --no-cache --update git && \
+ go get -u github.com/golang/dep/cmd/dep
+RUN git clone https://github.com/nicolai86/couchdb-operator /go/src/github.com/nicolai86/couchdb-operator && \
+ cd /go/src/github.com/nicolai86/couchdb-operator && \
+ dep ensure && \
+ go install github.com/nicolai86/couchdb-operator
+
+FROM alpine:3.6
+
+RUN apk --no-cache --update add ca-certificates && update-ca-certificates
+
+COPY --from=0 /go/bin/couchdb-operator /
+
+ENTRYPOINT ["/couchdb-operator"]

Gopkg.toml

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+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+# name = "github.com/user/project"
+# version = "1.0.0"
+#
+# [[constraint]]
+# name = "github.com/user/project2"
+# branch = "dev"
+# source = "github.com/myfork/project2"
+#
+# [[override]]
+# name = "github.com/x/y"
+# version = "2.4.0"
+
+
+[[constraint]]
+ branch = "master"
+ name = "github.com/nicolai86/couchdb-go"
+
+[[override]]
+ name = "k8s.io/apimachinery"
+ branch = "release-1.7"
+
+[[constraint]]
+ name = "k8s.io/client-go"
+ version = "4.0.0"

README.md

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+# couchdb operator
+
+this k8s operator allows you to run a 2.1 couchdb cluster on top of k8s. 
+
+## status
+
+- [ ] operator
+ - [ ] CRD (CouchDB)
+ - [x] definition
+ - [ ] management custom object add (spawn cluster)
+ - [ ] management custom object update (update cluster)
+ - [ ] management custom object delete (delete cluster)
+ - [ ] deployment template (port, readyness, livelyness)
+ - [ ] cluster management
+ - [ ] new pod -> join cluster
+ - [ ] old pod gone -> leave cluster
+ - [x] operator definition
+- [x] README
+
+## guiding notes
+
+see 7 principles taken from coreOS post: https://coreos.com/blog/introducing-operators.html and https://github.com/kubernetes/community/blob/master/contributors/devel/controllers.md
+## prerequisites 
+
+- k8s >= 1.7.0
+
+## usage
+
+```
+$ kubectl apply -f k8s/resource-type.yml
+$ kubectl apply -f k8s/deployment.yml
+```
+
+now, you can deploy a couchdb cluster like this:
+
+```
+apiVersion: "stable.couchdb.org/v1"
+kind: CouchDB
+metadata:
+ name: my-couchdb-cluster
+spec:
+ version: "2.1.0"
+ image: "nicolai86/couchdb"
+ replicas: 3 
+```

example.yml

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+apiVersion: "stable.couchdb.org/v1"
+kind: CouchDB
+metadata:
+ name: my-couchdb-cluster
+ namespace: default
+spec:
+ version: "2.1.0"
+ baseImage: "nicolai86/couchdb"
+ size: 3
+ pod: 
+ labels:
+ app: couchdb
+ nodeSelector:
+ app: couchdb
+ antiAffinity: false
+ couchdbEnv:
+ - { name: COUCHDB_USER, value: admin }
+ - { name: COUCHDB_PASSWORD, value: admin }
+---
+kind: Service
+apiVersion: v1
+metadata:
+ name: couchdb
+spec:
+ selector:
+ cluster: my-couchdb-cluster
+ app: couchdb
+ ports:
+ - protocol: TCP
+ port: 5986
+ name: "node-local"
+ targetPort: 5986
+ nodePort: 31986
+ - protocol: TCP
+ port: 5984
+ name: "standalone"
+ targetPort: 5984
+ nodePort: 31984
+ type: NodePort

k8s/deployment.yml

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+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+ name: couchdb-operator
+spec:
+ replicas: 1
+ template:
+ metadata:
+ labels:
+ name: couchdb-operator
+ spec:
+ containers:
+ - name: couchdb-operator
+ image: nicolai86/couchdb-operator:v0.0.1
+ imagePullPolicy: Always
+ env:
+ - name: OPERATOR_NAMESPACE
+ valueFrom:
+ fieldRef:
+ fieldPath: metadata.namespace
+ - name: OPERATOR_NAME
+ valueFrom:
+ fieldRef:
+ fieldPath: metadata.name