1个节点存在卷节点关联冲突，3个节点与Pod节点关联/选择器不匹配
1个节点存在卷节点关联冲突，3个节点与Pod节点关联/选择器不匹配
提问于 2022-07-08 15:45:28
我试图在特定的node_pool上配置redis状态集，但是当我应用清单时，我会得到以下错误。
0/4 nodes are available: 1 node(s) had volume node affinity conflict, 3 node(s) didn't match Pod's node affinity/selector.我的GKE是区域性的，我在一个区域中创建了一个有一个副本的节点池，因为它足够进行redis的工作。
node_pool位于一个区域内。我的想法是，三个副本生活在这个特定的节点中。
我如何配置这3个node_pool在同一个中？
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: redis
namespace: redis
spec:
serviceName: redis
replicas: 3
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
initContainers:
- name: config
image: redis:6.2.3-alpine
command: [ "sh", "-c" ]
args:
- |
cp /tmp/redis/redis.conf /etc/redis/redis.conf
echo "finding master..."
MASTER_FDQN=`hostname -f | sed -e 's/redis-[0-9]\./redis-0./'`
if [ "$(redis-cli -h sentinel -p 5000 ping)" != "PONG" ]; then
echo "master not found, defaulting to redis-0"
if [ "$(hostname)" == "redis-0" ]; then
echo "this is redis-0, not updating config..."
else
echo "updating redis.conf..."
echo "slaveof $MASTER_FDQN 6379" >> /etc/redis/redis.conf
fi
else
echo "sentinel found, finding master"
MASTER="$(redis-cli -h sentinel -p 5000 sentinel get-master-addr-by-name mymaster | grep -E '(^redis-\d{1,})|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})')"
echo "master found : $MASTER, updating redis.conf"
echo "slaveof $MASTER 6379" >> /etc/redis/redis.conf
fi
volumeMounts:
- name: redis-config
mountPath: /etc/redis/
- name: config
mountPath: /tmp/redis/
containers:
- name: redis
image: redis:6.2.3-alpine
command: ["redis-server"]
args: ["/etc/redis/redis.conf"]
ports:
- containerPort: 6379
name: redis
volumeMounts:
- name: data
mountPath: /data
- name: redis-config
mountPath: /etc/redis/
volumes:
- name: redis-config
emptyDir: {}
- name: config
configMap:
name: redis-config
nodeSelector:
cloud.google.com/gke-nodepool: redis-pool
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "standard"
resources:
requests:
storage: 50Mi
---
apiVersion: v1
kind: Service
metadata:
name: redis
namespace: redis
spec:
clusterIP: None
ports:
- port: 6379
targetPort: 6379
name: redis
selector:
app: redis回答 2
Stack Overflow用户
发布于 2022-07-09 11:18:17
您能否确保node_pool中的节点具有标签redis-pool？根据您的需求，您应该只有一个带有此标签的节点，这将允许将所有3个副本调度到此节点。
从技术上讲，说PVCs in the same node_pool是不正确的。在PVC模板中使用storageClass: default，这将导致PersistentVolumeClaims由Google Persistent Disks (GPDs)支持。它们独立于您的node_pools (计算资源)，不应被视为计算基础结构的一部分。
它们属于GCloud的存储部分。然而，GKE以透明的方式处理存储和计算之间的连接，因此感觉不像是在使用GPD，但是理解这种区别是很重要的。
Stack Overflow用户
发布于 2022-07-11 21:14:11
更新:我找到了一个解决方案，我创建了一个具有"matchLabelExpressions“匹配特定区域的matchLabelExpressions，所以我定义在matchLabelExpressions清单上使用与StorageClass名称与”数据“相匹配的StorageClass。
状态集
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: redis
namespace: redis
spec:
serviceName: redis
replicas: 3
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
initContainers:
- name: config
image: redis:6.2.3-alpine
command: [ "sh", "-c" ]
args:
- |
cp /tmp/redis/redis.conf /etc/redis/redis.conf
echo "finding master..."
MASTER_FDQN=`hostname -f | sed -e 's/redis-[0-9]\./redis-0./'`
if [ "$(redis-cli -h sentinel -p 5000 ping)" != "PONG" ]; then
echo "master not found, defaulting to redis-0"
if [ "$(hostname)" == "redis-0" ]; then
echo "this is redis-0, not updating config..."
else
echo "updating redis.conf..."
echo "slaveof $MASTER_FDQN 6379" >> /etc/redis/redis.conf
fi
else
echo "sentinel found, finding master"
MASTER="$(redis-cli -h sentinel -p 5000 sentinel get-master-addr-by-name mymaster | grep -E '(^redis-\d{1,})|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})')"
echo "master found : $MASTER, updating redis.conf"
echo "slaveof $MASTER 6379" >> /etc/redis/redis.conf
fi
volumeMounts:
- name: redis-config
mountPath: /etc/redis/
- name: config
mountPath: /tmp/redis/
containers:
- name: redis
image: redis:6.2.3-alpine
command: ["redis-server"]
args: ["/etc/redis/redis.conf"]
ports:
- containerPort: 6379
name: redis
volumeMounts:
- name: data
mountPath: /data
- name: redis-config
mountPath: /etc/redis/
volumes:
- name: redis-config
emptyDir: {}
- name: config
configMap:
name: redis-config
nodeSelector:
cloud.google.com/gke-nodepool: redis-pool
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "data"
resources:
requests:
storage: 50MiStorageClass
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
name: data
namespace: redis
provisioner: pd.csi.storage.gke.io
parameters:
type: pd-standard
replication-type: none
volumeBindingMode: WaitForFirstConsumer
allowedTopologies:
- matchLabelExpressions:
- key: topology.gke.io/zone
values:
- europe-west3-a页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72913909
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