1、flexvolume概述
FlexVolume 是 Kubernetes v1.8+ 支持的一种存储插件扩展方式。它需要外部插件将二进制文件放到预先配置的路径中（如 /usr/libexec/kubernetes/kubelet-plugins/volume/exec/），并需要在系统中安装好所有需要的依赖。
2、flexvolume部署流程
- 使用flexvolume需要kubelet关闭
--enable-controller-attach-detach选项；- 以Daemonset方式部署flexvolume，确保每个节点上都有对应的可执行二进制文件。
apiVersion: apps/v1 # for versions before 1.8.0 use extensions/v1beta1
kind: DaemonSet
metadata:
name: flexvolume
namespace: kube-system
labels:
k8s-volume: flexvolume
spec:
selector:
matchLabels:
name: acs-flexvolume
template:
metadata:
labels:
name: acs-flexvolume
spec:
hostPID: true
hostNetwork: true
tolerations:
- key: node-role.kubernetes.io/master
operator: Exists
effect: NoSchedule
containers:
- name: acs-flexvolume
image: flexvolume:***
imagePullPolicy: Always
securityContext:
privileged: true
env:
- name: ACS_DISK
value: "true"
- name: ACS_NAS
value: "true"
- name: ACS_OSS
value: "true"
- name: ACCESS_KEY_ID
value: ""
- name: ACCESS_KEY_SECRET
value: ""
- name: SLB_ENDPOINT
value: ""
- name: ECS_ENDPOINT
value: ""
resources:
limits:
memory: 200Mi
requests:
cpu: 100m
memory: 200Mi
volumeMounts:
- name: usrdir
mountPath: /host/usr/
- name: etcdir
mountPath: /host/etc/
- name: logdir
mountPath: /var/log/alicloud/
volumes:
- name: usrdir
hostPath:
path: /usr/
- name: etcdir
hostPath:
path: /etc/
- name: logdir
hostPath:
path: /var/log/alicloud/
updateStrategy:
type: RollingUpdate
