mirror of https://github.com/k3s-io/k3s
97 lines
3.2 KiB
YAML
97 lines
3.2 KiB
YAML
apiVersion: v1
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kind: Service
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metadata:
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annotations:
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service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
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name: cockroachdb
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labels:
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app: cockroachdb
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spec:
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ports:
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# The main port, served by gRPC, serves Postgres-flavor SQL, internode
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# traffic and the cli.
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- port: 26257
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targetPort: 26257
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name: grpc
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# The secondary port serves the UI as well as health and debug endpoints.
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- port: 8080
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targetPort: 8080
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name: http
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clusterIP: None
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selector:
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app: cockroachdb
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---
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apiVersion: apps/v1alpha1
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kind: PetSet
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metadata:
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name: cockroachdb
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spec:
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serviceName: "cockroachdb"
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replicas: 5
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template:
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metadata:
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labels:
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app: cockroachdb
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annotations:
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pod.alpha.kubernetes.io/initialized: "true"
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spec:
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containers:
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- name: cockroachdb
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# Runs the master branch. Not recommended for production, but since
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# CockroachDB is in Beta, you don't want to run it in production
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# anyway. See
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# https://hub.docker.com/r/cockroachdb/cockroach/tags/
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# if you prefer to run a beta release.
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image: cockroachdb/cockroach
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imagePullPolicy: IfNotPresent
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ports:
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- containerPort: 26257
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name: grpc
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- containerPort: 8080
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name: http
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volumeMounts:
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- name: datadir
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mountPath: /cockroach/cockroach-data
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command:
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- "/bin/bash"
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- "-ecx"
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- |
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# The use of qualified `hostname -f` is crucial:
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# Other nodes aren't able to look up the unqualified hostname.
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CRARGS=("start" "--logtostderr" "--insecure" "--host" "$(hostname -f)")
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# TODO(tschottdorf): really want to use an init container to do
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# the bootstrapping. The idea is that the container would know
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# whether it's on the first node and could check whether there's
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# already a data directory. If not, it would bootstrap the cluster.
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# We will need some version of `cockroach init` back for this to
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# work. For now, just do the same in a shell snippet.
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# Of course this isn't without danger - if node0 loses its data,
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# upon restarting it will simply bootstrap a new cluster and smack
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# it into our existing cluster.
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# There are likely ways out. For example, the init container could
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# query the kubernetes API and see whether any other nodes are
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# around, etc. Or, of course, the admin can pre-seed the lost
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# volume somehow (and in that case we should provide a better way,
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# for example a marker file).
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if [ ! "$(hostname)" == "cockroachdb-0" ] || \
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[ -e "/cockroach/cockroach-data/COCKROACHDB_VERSION" ]
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then
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CRARGS+=("--join" "cockroachdb")
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fi
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/cockroach/cockroach ${CRARGS[*]}
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volumes:
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- name: datadir
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persistentVolumeClaim:
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claimName: datadir
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volumeClaimTemplates:
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- metadata:
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name: datadir
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annotations:
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volume.alpha.kubernetes.io/storage-class: anything
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spec:
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accessModes:
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- "ReadWriteOnce"
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resources:
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requests:
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storage: 1Gi
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