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k8s¼¯ÈºÈçºÎÔÚSDSÑÓÕ¹¼¯ÈºÖ®ÉÏÅäÖÃÓëʹÓã¿
k8sÓëXSKY SDSÖ®¼äͨ¹ýCSIÀ´ÊµÏÖ¶Ô½Ó¡£CSI
¹Ù·½ÈÏÖ¤£ºhttps://kubernetes-csi.github.io/docs/drivers.html
XSKY CSI Driver·ÖΪBlock DriverÓë NFS driver¡£¹ÜÀíʹÓÃXMS API¶Ô½Ó¡£IOÃ棬Block
DriverʹÓÃiSCSIÐÒéÓëk8s node½ÚµãͨÐÅ£»NFS driverʹÓÃNFSÐÒéÓëk8s node½ÚµãͨÐÅ¡£Block
volumeÖ§³ÖVIPÓë¶à·¾¶·½Ê½½øÐоí¹ÒÔØ¡£
ÑÓÕ¹¼¯ÈºÖУ¬Ä¿Ç°½¨ÒéCSI iSCSI DriverʹÓöà·¾¶½øÐжԽӡ£
ͨ¹ýÔÚ·ÃÎÊ·¾¶ÖÐÌí¼Ó¶à¸öÊý¾ÝÖÐÐĵĶà¸öÍø¹Ø½ÚµãÀ´±£Ö¤¶à·¾¶Á´Â·ÈßÓà¡£µ±ÔÖÄÑ·¢Éú£¬¶à·¾¶µÄÈßÓà¿ÉÒÔ±£ÕÏÊý¾Ý·ÃÎʵÄÕý³£¡£ CSI iSCSI DriverÅäÖùý³Ì
1¡¢k8sƽ̨¿ªÆô¿ìÕÕ¡¢À©ÈÝ¡¢¿Ë¡¡¢raw¹¦ÄÜ
k8sĬÈÏ먦Æô¿ìÕÕ¡¢À©ÈÝ¡¢¿Ë¡¡¢raw¹¦ÄÜ£¬ÐèÒªÅäÖÃkube-apiserver.yaml¡¢kube-controller-manager.yaml¡¢10-kubeadm.conf
ÖеIJÎÊý¿ªÆô¹¦ÄÜ¡£Èç¹ûk8sа汾¹¦ÄÜGA£¬¾Í²»ÔÙÐèÒªÅäÖá£
°æ±¾ËµÃ÷¼ûk8s¹ÙÍø£ºhttps://kubernetes-csi.github.io/docs/drivers.html
Ìí¼ÓÈçϲÎÊý£º
BlockVolume£º¿ªÆôraw¾í¹¦ÄÜ
CSIBlockVolume£º¿ªÆôraw¾í¹¦ÄÜ
VolumeSnapshotDataSource£º¿ªÆô¿ìÕÕ¹¦ÄÜ
ExpandCSIVolumes£º¿ªÆôÀ©Èݹ¦ÄÜ
ExpandInUsePersistentVolumes£º¿ªÆôÔÚÏßÀ©Èݹ¦ÄÜ
VolumePVCDataSource£º¿ªÆô¿Ë¡¹¦ÄÜ£¨k8s 1.15.0+°æ±¾Ö§³Ö£©
ʹÓÃrancher¶Ô½Óʱ£¬ÐèÒªÔÚrancher¹ÜÀí½çÃæÅäÖÃkube-apiserver¡¢kube-controller¡¢kubeletÈý¸ö·þÎñ£¬ÉÏÒ»²½ÖÐÌáµ½µÄ²ÎÊý¡£
2¡¢SecretÅäÖÃÓë´´½¨
´Ë¹¦ÄÜÓÃÓÚ±£´æSDS¹ÜÀíÓû§µÄÓû§ÃûÓëÃÜÂ룬Ìṩ¸øCSI DriverʹÓá£
3¡¢AccessPath´´½¨
# vi cr-ap.yaml
apiVersion: "sds.xsky.com/v1"
kind: AccessPath
metadata:
name: my-ap #kuberneteÏÔʾµÄ×ÊÔ´Ãû³Æ
spec:
name: myap #SDS´æ´¢ÉÏAccessPathÃû³Æ
type: Kubernetes #accesspathÀàÐÍ£¬Ä¬ÈÏΪKubernetes
cluster_info:
xmsServers: 10.252.90.39 #SDS¼¯Èº¹ÜÀí½ÚµãIPµØÖ·£¬¿ÉÅäÖöà¸ö£¬¶ººÅ¸ô¿ª
secret_name: test-secret #SDS¼¯Èºsecret
secret_namespace: default #secretËùÊôÃüÃû¿Õ¼ä
gateway: vm39,vm40,vm41 #ÅäÖÿéÍø¹Øhostname
vip_group: #ÅäÖÃvip
preempt: false #optional #vipÊÇ·ñ»ØÇÐ
vips: #Èç²»ÐèÒªvip,ÇëÅäÖÃΪvips:
[],²¢Ê¹ÓÃ#ºÅ×¢ÊÍÏÂÃæÈýÐÐ
- vip: 10.252.90.100 #vip ip
mask: 24 #vip×ÓÍø
default_gateway: vm39 #vip´´½¨½Úµã
4¡¢StorageClassÅäÖÃÓë´´½¨
ÃèÊöÈçºÎÅäÖÃStorageClass£¬¼°²ÎÊý½âÊÍ¡¢¶¨ÒåÒ»¸öºó¶Ë´æ´¢¡£
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: my-sc # StorageClassµÄÃû³Æ
parameters:
accessPaths: my-ap # ÉÏÒ»²½Öд´½¨µÄAccessPathÃû³Æ
fsType: ext4 # Îļþϵͳ¸ñʽ¡£Ö§³Öxfs,ext4,ext3
pool: poolB # ´æ´¢³ØÃû³Æ
xmsServers: 10.252.3.179,10.252.3.180,10.252.3.181 #
SDS¹ÜÀí½Úµã¹ÜÀíIP£¬½¨ÒéÅäÖÃ3¸ö£¬ÒÔ¶ººÅ¸ô¿ª,csi iscsi driver˳ÐòʹÓÃip·ÃÎÊ
csi.storage.k8s.io/provisioner-secret-name: test-secret #
secretÃû³Æ
csi.storage.k8s.io/provisioner-secret-namespace: default #
secretÃüÃû¿Õ¼ä
provisioner: iscsi.csi.xsky.com # ĬÈÏΪiscsi.csi.xsky.com
reclaimPolicy: Delete
allowVolumeExpansion: true # ÊÇ·ñÔÊÐí¾íÀ©ÈÝ¡£trueΪÔÊÐí£¬falseΪ²»ÔÊÐí
mountOptions:
- _netdev # Ìí¼Ómount²ÎÊý£¬Ê¹ÓÃiscsiÐÒéʱ£¬ÐèÒª°Ñ¹ÒÔصĿéÉ豸±êʶΪÍøÂçÉ豸¡£
5¡¢PVCÅäÖÃÓë´´½¨
PVC×ÊÔ´£¬ÒÀÀµstorageclass£¬ÓÃÓÚ¶¨Òå¼°×Ô¶¯´´½¨Ò»¸öºó¶Ë¾í¡£
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: my-pvc #name£ºpvcÃû³Æ
namespace: default #´Ëpvc°²×°ÔÚÄĸöÃüÃû¿Õ¼ä
spec:
volumeMode: Filesystem #Filesystem£ºÒÔÎļþϵͳ¹ÒÔØ£¬Îļþϵͳ¸ñʽÔÚstrogeclass¶¨Òå
#Block£ºÒÔÂã¾í·½Ê½¹ÒÔØ
storageClassName: my-sc
accessModes:
- ReadOnlyMany #ReadWriteOnce£ºÖ»ÔÊÐí±¾½Úµã¹ÒÔØ
#ReadOnlyMany£ºÔÊÐí¶à½ÚµãÒÔÖ»¶Á·½Ê½¹ÒÔØ£¬podÖйÒÔؾíÐèÒªÅäÖóÉÖ»¶Á¡£
#ReadWriteMany£ºÔÊÐí¶à½ÚµãÒÔ¶Áд·½Ê½¹ÒÔØ£¨iscsi²»Ö§³Ö£¬NFSÖ§³Ö£©
resources:
requests:
storage: 20Gi
6¡¢PODÅäÖÃÓë´´½¨
PodÊÇk8s»ù±¾×ÊÔ´£¬PodÖпÉÒÔÅÜÒ»¸ö»ò¶à¸öÈÝÆ÷£¬Ò²¿ÉÒÔ¹ÒÔر¾µØ»òºó¶Ë´æ´¢¾í¡£
apiVersion: v1
kind: Pod
metadata:
name: my-pod
spec:
containers:
- name: web-server
image: nginx
volumeMounts: #¹ÒÔØÎļþϵͳ,¶¨Òåpvc¸ñʽ»¯³ÉÎļþϵͳÐÎʽ¹ÒÔص½podÄÚ(¶ÔÓ¦PVCÖеÄvolumeMode:
Filesystem)
- name: pvc-1 #¹ØÁªvolumesµÄÃû³Æ
mountPath: /var/lib/www/html #Ö¸¶¨ÈÝÆ÷ÖйÒÔصã
readOnly: false #readOnly£º¾íÊÇ·ñÖ»¶Á¡£trueΪֻ¶Á£¬falseΪ¶Áд,ÔÚÏÂÃæ¾íÉ϶¨ÒåÒ²¿ÉÒÔ
# volumeDevices:
#¹ÒÔØÂãÉ豸,¶¨ÒåpvcÒÔÂãÉ豸ÐÎʽ¹ÒÔص½podÄÚ£¨¶ÔÓ¦PVCÖеÄvolumeMode: Block£©
# - devicePath: /dev/xda #°ó¶¨µ½ÈÝÆ÷ÅÌ·û
# name: nginx-storage-block #¹ØÁª¾íµÄÃû³Æ
volumes: #¶¨Òå¾íÐÅÏ¢£¬Ö¸¶¨Îªpvc¾í
- name: pvc-1
persistentVolumeClaim:
claimName: my-pvc #Ö¸¶¨PVC
readOnly: false
7¡¢VolumeSnapshotClassÅäÖÃÓë´´½¨
´Ë×ÊÔ´ÓÃÓÚ¶¨Òå¿ìÕÕ¡£
apiVersion: snapshot.storage.k8s.io/v1alpha1
kind: VolumeSnapshotClass
metadata:
name: csi-hostpath-snapclass #
VolumeSnapshotClassÃû³Æ
parameters:
flatten: "true" # restoreʱÊÇ·ñ¶ÏÁ´,trueΪ¶ÏÁ´£¬falseΪ²»¶ÏÁ´
use: "true" # ÊÇ·ñÔÊÐírestore,trueΪÔÊÐí£¬falseΪ²»ÔÊÐí
snapshotter: iscsi.csi.xsky.com
deletionPolicy: Delete # Retain£º±£Áôºó¶Ë¿ìÕÕ Delete£ºÉ¾³ýºó¶Ë¿ìÕÕ CSI NFS DriverÅäÖùý³Ì
1¡¢NFS´´½¨
ʹÓÃchromeä¯ÀÀÆ÷µÇ¼SDS dashboard£¬·Ö±ð´´½¨Îļþ¿Í»§¶Ë&¿Í»§¶Ë×é¡¢ÎļþÍø¹Ø×é¡¢Îļþϵͳ£¬Ìí¼ÓNFS¹²Ïí ¡£
2¡¢StorageClass ÅäÖÃÓë´´½¨
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: csi-nfs-sc
provisioner: com.nfs.csi.xsky
parameters:
xmsServers: 10.252.3.179,10.252.3.180,10.252.3.181 #
SDS¹ÜÀí½Úµã¹ÜÀíIP£¬½¨ÒéÅäÖÃ3¸ö£¬ÒÔ¶ººÅ¸ô¿ª
user: admin # SDS¹ÜÀí½ÚµãÓû§Ãû
password: admin # SDS¹ÜÀí½ÚµãÃÜÂë
shares: 192.168.120.123:/sdsfs/k8s-nfs/ #
NFS¹²ÏíµØÖ·£¬ÅäÖöà¸öÒÔ¶ººÅ¸ô¿ª
clientGroupName: "k8s-cluster" # ¿Í»§¶ËÃû³Æ£¬É¾³ý´Ë×ֶλòÕß×Ö¶ÎֵΪ¿Õ±íʾ¹«¿ª¹²Ïí
reclaimPolicy: Delete # ɾ³ý²ßÂÔ
mountOptions:
- vers=3 # vers£ºÖ§³Öv3,v4¡£Ä¬ÈÏʹÓÃv3
3¡¢PVCÅäÖÃÓë´´½¨
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: csi-nfs-pvc # PVCÃû³Æ
spec:
accessModes:
- ReadWriteOnce # ·ÃÎÊģʽ
# ReadWriteOnce£ºÖ»ÔÊÐíµ¥½Úµã¹ÒÔØ
# ReadOnlyMany£ºÔÊÐí¶à½ÚµãÒÔÖ»¶Á·½Ê½¹ÒÔØ£¬podÖйÒÔؾíÐèÒªÅäÖóÉÖ»¶Á¡£
# ReadWriteMany£ºÔÊÐí¶à½ÚµãÒÔ¶Áд·½Ê½¹ÒÔØ£¨iscsi²»Ö§³Ö£¬NFSÖ§³Ö£©
resources:
requests:
storage: 5Gi
storageClassName: csi-nfs-sc
4¡¢pod ÅäÖÃÓë´´½¨
apiVersion: v1
kind: Pod
metadata:
name: csi-nfs-demopod
spec:
containers:
- name: web-server
image: nginx
volumeMounts:
- name: mypvc # ±¾ÅäÖÃÎļþ¶¨ÒåµÄ¾íÃû³Æ
mountPath: /var/lib/www/html # ¹ÒÔص½ÈÝÆ÷ÖеÄĿ¼
volumes:
- name: mypvc # ±¾ÅäÖÃÎļþ¶¨ÒåµÄ¾íÃû³Æ
persistentVolumeClaim:
claimName: csi-nfs-pvc # pvcÃû³Æ
readOnly: false # trueΪֻ¶Á£¬falseΪ¶Áд ÈÝÔÖ»Ö¸´
µ±XSKYµÄÑÓÕ¹¼¯ÈºÓÃÓÚK8sÈÝÆ÷¼¯ÈºÈÝÔÖ£¬ÈçºÎ½øÐÐpvc»Ö¸´£¿
ÔÚK8sÕâ¶ËÐèҪʹÓõ½Ë«»îÔËά¹¤¾ß£¬¸ºÔؾùºâ×é¼þÖ®¼äҲͨ¹ýHA²¿Êð·½Ê½±£Ö¤Æä¸ß¿ÉÓã¬ÈçʹÓÃKeepalive£¬»òÕßͳһ²ÉÓÃ
pacemaker+corosync ×é¼þ±£Ö¤ÈÝÆ÷µÄ¸ß¿ÉÓúÍÎȶ¨ÐÔ£¬Ö÷ҪĿµÄÊÇͬ²½Á½¸ö¼¯ÈºÖ®¼äµÄ¼ÆËã¶ËÏà¹ØÎļþ¡£Õû¸ök8s¼¯ÈºÈÝÔÖÐèÒª¿½±´ËùÓÐk8s×ÊÔ´£¬´æ´¢Ôò¿ÉÒÔͨ¹ýXSKYÑÓÕ¹¼¯ÈºÀ´ÊµÏÖ¡£
²½ÖèÈçÏ£º
Ö÷Kubernetes¼¯ÈºÓ뱸Kubernetes¼¯Èº²¿ÊðͬһÌ×XSKY CSI Driver£¬²¿Êð·½·¨²Î¿¼×î¼Ñʵ¼ùÊֲᡣ
NFS ¶Ô½Ó£¬Íø¹Ø×éÐèÒªÌí¼ÓÁ½¸öÖÐÐÄÍø¹Ø½Úµã¡£VIPÔËÐÐÔÚÖ÷ÖÐÐĽڵ㡣
iSCSI¶Ô½Ó£¬APÐèÒª¹ØÁªÁ½¸öÖÐÐÄÍø¹Ø½Úµã¡£
ʹÓÃË«»îÔËά¹¤¾ß±¸·ÝÖ÷k8s¼¯ÈºÖеÄsc£¬pv£¬pvc£¬pod£¬configmaps£¬secretÏà¹ØµÄÅäÖÃÐÅÏ¢µ½±¸K8s¼¯ÈºÖÐ
# kubectl get sc iscsi-sc -oyaml > sc.yaml
# kubectl get pv pvname -oyaml > pv.yaml
# kubectl get configmaps csi-iscsi-vid-pvname -oyaml > pv-configmaps.yaml
# kubectl get pvc pvcname -oyaml > pvc.yaml
# kubectl get pod podname -oyaml > pod.yaml
# kubectl get secret secretname -oyaml > secret.yaml #iscsi¶Ô½ÓÐèÒªÓõ½¿½±´secret
ÐÞ¸Äpv.yaml£¬×¢Ê͵ôuidÓëclaimRef£¬persistentVolumeReclaimPolicyÐÞ¸ÄΪRetain¡£
# vim nfs-pv.yaml
apiVersion: v1
kind: PersistentVolume
pv.kubernetes.io/provisioned-by: com.nfs.csi.xsky
creationTimestamp: "2020-05-12T09:41:07Z"
finalizers:
- kubernetes.io/pv-protection
- external-attacher/com-nfs-csi-xsky
name: pvc-a5ff70ef-9434-11ea-a29c-fa8f374b5500
resourceVersion: "64802021"
selfLink: /api/v1/persistentvolumes/pvc-a5ff70ef-9434-11ea-a29c-fa8f374b5500
#uid: b455608e-9434-11ea-a29c-fa8f374b5500
spec:
accessModes:
- ReadWriteMany
capacity:
storage: 5Gi
#claimRef:
# apiVersion: v1
# kind: PersistentVolumeClaim
# name: csi-nfs-pvc
# namespace: default
# resourceVersion: "64801647"
# uid: a5ff70ef-9434-11ea-a29c-fa8f374b5500
csi:
driver: com.nfs.csi.xsky
fsType: ext4
volumeAttributes:
password: admin
shares: 192.168.120.250:/sdsfs/csi-fs-1/
storage.kubernetes.io/csiProvisionerIdentity: 1589276173990-8081-com.nfs.csi.xsky
user: admin
volumeInfo: '{"id":0,"name":"pvc-a5ff70ef-9434-11ea-a29c-fa8f374b5500","sc":{"id":0
,"name":"","xmsServers":"10.252.90.60,10.252.90.101","user":"admin","password":"admin","client_group_name":"","shares":["192.168.120.250:/sdsfs/csi-fs-1/"]},"size":5368709120,"shares":null,"folder_id":11,"quota_tree_id":6,"gateway_group_id":2,"full_share_path":"192.168.120.250:/sdsfs/csi-fs-1/pvc-a5ff70ef-9434-11ea-a29c-fa8f374b5500","share_id":0,"client_group_id":0}' xmsServers: 10.252.90.60,10.252.90.101
volumeHandle: csi-nfs-vid-pvc-a5ff70ef-9434-11ea-a29c-fa8f374b5500
mountOptions:
- vers=3
persistentVolumeReclaimPolicy: Retain
storageClassName: csi-nfs-sc
volumeMode: Filesystem
status:
phase: Bound
±¸k8s¼¯Èº»Ö¸´sc,pv,pvc,pod¡£
# kubectl create -f sc.yaml
# kubectl create -f pv.yaml
# kubectl create -f configmaps.yaml
# kubectl create -f pvc.yaml
# kubectl create -f pod.yaml
µ½´Ë£¬pvc£¬pod»Ö¸´Íê³É¡£ ³É¹¦°¸Àý¡ª¡ªÈÝÆ÷³Ö¾Ã»¯´æ´¢Ë«»îÊý¾ÝÖÐÐÄ·½°¸
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