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Put initContainers to PodSpec for some statefulset examples.

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This commit is contained in:
Guangya Liu
2017-05-06 17:55:09 +08:00
parent a481a5bca9
commit 49c8ed802a
5 changed files with 142 additions and 219 deletions
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65
examples/cockroachdb/cockroachdb-statefulset.yaml
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@@ -77,46 +77,33 @@ spec:
metadata:
labels:
app: cockroachdb
annotations:
# Init containers are run only once in the lifetime of a pod, before
# it's started up for the first time. It has to exit successfully
# before the pod's main containers are allowed to start.
# This particular init container does a DNS lookup for other pods in
# the set to help determine whether or not a cluster already exists.
# If any other pods exist, it creates a file in the cockroach-data
# directory to pass that information along to the primary container that
# has to decide what command-line flags to use when starting CockroachDB.
# This only matters when a pod's persistent volume is empty - if it has
# data from a previous execution, that data will always be used.
pod.alpha.kubernetes.io/init-containers: '[
{
"name": "bootstrap",
"image": "cockroachdb/cockroach-k8s-init:0.1",
"imagePullPolicy": "IfNotPresent",
"args": [
"-on-start=/on-start.sh",
"-service=cockroachdb"
],
"env": [
{
"name": "POD_NAMESPACE",
"valueFrom": {
"fieldRef": {
"apiVersion": "v1",
"fieldPath": "metadata.namespace"
}
}
}
],
"volumeMounts": [
{
"name": "datadir",
"mountPath": "/cockroach/cockroach-data"
}
]
}
]'
spec:
# Init containers are run only once in the lifetime of a pod, before
# it's started up for the first time. It has to exit successfully
# before the pod's main containers are allowed to start.
# This particular init container does a DNS lookup for other pods in
# the set to help determine whether or not a cluster already exists.
# If any other pods exist, it creates a file in the cockroach-data
# directory to pass that information along to the primary container that
# has to decide what command-line flags to use when starting CockroachDB.
# This only matters when a pod's persistent volume is empty - if it has
# data from a previous execution, that data will always be used.
initContainers:
- name: bootstrap
image: cockroachdb/cockroach-k8s-init:0.1
imagePullPolicy: IfNotPresent
args:
- "-on-start=/on-start.sh"
- "-service=cockroachdb"
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
volumeMounts:
- name: datadir
mountPath: "/cockroach/cockroach-data"
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution: