k8s生产中常用的volumes挂载方式有：hostPath、pv，pvc、nfs
1.hostPath挂载
hostPath是将主机节点文件系统上的文件或目录挂载到Pod 中，同时pod中的目录或者文件也会实时存在宿主机上，如果pod删除，hostpath中的文件不会被删除。（生成的pod只能在同一个节点上，调度到其他节点就不会挂载）
配置文件：
[root@master1 k8s-nginx]# cat nginx-test.yaml apiVersion: v1
kind: Service
metadata:
labels:
app: nginx-servie
name: nginx-service
namespace: default
spec:
ports:
#对外暴露端口30003
- nodePort: 30003
port: 8010
protocol: TCP
targetPort: 8010
selector:
app: nginx-web
#NodePort对外暴露端口
type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: nginx-web
name: nginx-web
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: nginx-web
template:
metadata:
labels:
app: nginx-web
namespace: default
spec:
imagePullSecrets:
- name: secret-key
containers:
- image: registry.cn-zhangjiakou.aliyuncs.com/ymku/nginx:v2
name: nginx
imagePullPolicy: Always
ports:
- containerPort: 8010
resources:
requests:
cpu: 100m
memory: 512Mi
limits:
cpu: 1000m
memory: 1Gi
volumeMounts:
- name: nginx-volume-dir
mountPath: /var/log/nginx
- name: nginx-volume-file
mountPath: /var/log/nginx/access2.log
volumes:
- name: nginx-volume-dir
hostPath:
path: /root/k8s-nginx/nginx/log
type: DirectoryOrCreate #如果目录不存在就创建
- name: nginx-volume-file
hostPath:
path: /root/k8s-nginx/nginx/log/access2.log
type: FileOrCreate ## 如果文件不存在则创建这个是master1节点创建的，pod是在node1节点上运行的，所以日志是存储在node1节点上
需要登录到node1节点上查看挂载的情况：
在node1节点上查看是否目录和日志文件：
2.nfs挂载
安装nfs，建立共享服务器（生产环境单独机器安装nfs）我是在node1节点安装的：
[root@node1 ~]# yum -y install nfs-utils
...
创建存储目录：
[root@node1 ~]# mkdir -p /data/nfs
将共享目录以读写权限给nfs机器：10.10.10.24且不用root权限（生产环境需要填写单独安装的nfs机器ip）
[root@node1 ~]# vim /etc/exports
/data/nfs 10.10.10.24(rw,no_root_squash)
启动nfs应用：
[root@node1 ~]# systemctl start nfs
查看进程：
[root@node1 ~]# ps -ef |grep nfs
root 104715 2 0 15:56 ? 00:00:00 [nfsd4_callbacks]
root 104721 2 0 15:56 ? 00:00:00 [nfsd]
root 104722 2 0 15:56 ? 00:00:00 [nfsd]
root 104723 2 0 15:56 ? 00:00:00 [nfsd]
root 104724 2 0 15:56 ? 00:00:00 [nfsd]
root 104725 2 0 15:56 ? 00:00:00 [nfsd]
root 104726 2 0 15:56 ? 00:00:00 [nfsd]
root 104727 2 0 15:56 ? 00:00:00 [nfsd]
root 104728 2 0 15:56 ? 00:00:00 [nfsd]
root 104750 103971 0 15:56 pts/0 00:00:00 grep --color=auto nfs
编写pod的yaml文件：
apiVersion: v1
kind: Service
metadata:
labels:
app: nginx-servie
name: nginx-service
namespace: default
spec:
ports:
#对外暴露端口30003
- nodePort: 30003
port: 8010
protocol: TCP
targetPort: 8010
selector:
app: nginx-web
#NodePort对外暴露端口
type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: nginx-web
name: nginx-web
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: nginx-web
template:
metadata:
labels:
app: nginx-web
namespace: default
spec:
imagePullSecrets:
- name: secret-key
containers:
- image: registry.cn-zhangjiakou.aliyuncs.com/ymku/nginx:v2
name: nginx
imagePullPolicy: Always
ports:
- containerPort: 8010
resources:
requests:
cpu: 100m
memory: 512Mi
limits:
cpu: 1000m
memory: 1Gi
volumeMounts:
- name: nginx-volume-dir
mountPath: /var/log/nginx
#- name: nginx-config
# mountPath: /etc/nginx/conf.d/
volumes:
- name: nginx-volume-dir
nfs:
server: 10.10.10.24
path: /data/nfs
#- name: nginx-config
# nfs:
# server: 10.10.10.24
# path: /data/nfs验证：到安装nfs机器上的/data/nfs目录查看是否有文件（我这个是在node1上安装的nfs）
3.pv、pvc挂载
待续 ...
