Openshift Origin 1.5.1 Pod反亲和性在部署配置上不起作用

Question

我有一个奇怪的问题，我正在尝试应用 PodAntiAffinity 以确保特定 deploymentConfig 的 2 个 pod 都不会在同一节点上结束：

我尝试使用以下方法编辑 dc：

spec:
replicas: 1
selector:
app: server-config
deploymentconfig: server-config
strategy:
activeDeadlineSeconds: 21600
resources: {}
rollingParams:
intervalSeconds: 1
maxSurge: 25%
maxUnavailable: 25%
timeoutSeconds: 600
updatePeriodSeconds: 1
type: Rolling
template:
metadata:
creationTimestamp: null
labels:
app: server-config
deploymentconfig: server-config
spec:
affinity:
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: app
operator: In
values:
- server-config
topologyKey: "kubernetes.io/hostname"

但是在保存它时，我得到一个：

"/tmp/oc-edit-34z56.yaml" 106L, 3001C written
deploymentconfig "server-config" skipped

而且变化不会持续下去。我的 openshift/Kubernetes 版本是：

[root@master1 ~]# oc version
oc v1.5.1
kubernetes v1.5.2+43a9be4
features: Basic-Auth GSSAPI Kerberos SPNEGO

提前谢谢。

Answer 1

这似乎有效，语法大不相同，需要添加"scheduler.alpha.kubernetes.io/affinity"注释才能工作：

spec:
replicas: 1
selector:
app: server-config
deploymentconfig: server-config
strategy:
activeDeadlineSeconds: 21600
resources: {}
rollingParams:
intervalSeconds: 1
maxSurge: 25%
maxUnavailable: 25%
timeoutSeconds: 600
updatePeriodSeconds: 1
type: Rolling
template:
metadata:
annotations:
scheduler.alpha.kubernetes.io/affinity: |
{
"podAntiAffinity": {
"requiredDuringSchedulingIgnoredDuringExecution": [{
"labelSelector": {
"matchExpressions": [{
"key": "app",
"operator": "In",
"values":["server-config"]
}]
},
"topologyKey": "kubernetes.io/hostname"
}]
}
}

按预期工作并在节点之间正确分布：

[root@master1 ~]# oc get pods -o wide |grep server-config
server-config-22-4ktvf                      1/1       Running   0          3h        10.1.1.73    10.0.4.101
server-config-22-fz31j                      1/1       Running   0          3h        10.1.0.3     10.0.4.100
server-config-22-mrw09                      1/1       Running   0          3h        10.1.2.64    10.0.4.102