K8S部署lnmp項目全過程
更新時間：2024年07月30日 10:29:15 作者：跳躍音符#3712
這篇文章主要介紹了K8S部署lnmp項目全過程,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教
LNMP為什么要遷移到k8s
將LNMP遷移到k8s架構上會使得應用的啟動、遷移、部署變得即簡單又安全。
不必擔心應用遷移后工作出現(xiàn)問題，也不用擔心一臺服務器無法應付突發(fā)的用戶量。
架構設計
MySQL是一種有狀態(tài)服務，MySQL在某些情況下如果發(fā)生故障性退出可能會出現(xiàn)服務無法再次啟動的情況，所以使用StorageClass(NFS)來掛載，并使用Deployments來保證應用的持續(xù),這里設置replicas為1,后期部署主從后再行修改
PVC設置
[root@master lnmp]# kubectl create ns lnmp
namespace/lnmp created
[root@master lnmp]# cat lnmp-pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mysql-pvc
namespace: lnmp
spec:
resources:
requests:
storage: 5Gi
accessModes:
- ReadWriteMany
storageClassName: mysc1
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: php-pvc
namespace: lnmp
spec:
resources:
requests:
storage: 5Gi
accessModes:
- ReadWriteMany
storageClassName: mysc1
[root@master lnmp]# kubectl apply -f lnmp-pvc.yaml
persistentvolumeclaim/mysql created
persistentvolumeclaim/php created
### 已部署sc,這邊狀態(tài)已經(jīng)變更為 Bound
[root@master lnmp]# kubectl get pvc -n lnmp
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
mysql-pvc Bound pvc-bb57ddc7-ae5e-4652-880a-08d8260314bb 5Gi RWX mysc1 29s
php-pvc Bound pvc-53c2880e-c383-41f1-8e09-c7106ea8c18f 5Gi RWX mysc1 29sMysql 配置
1. 創(chuàng)建mysql密碼的認證 (secret)
[root@master lnmp]# kubectl create secret generic mysql-pass --from-literal=password=Aa123456 -n lnmp secret/mysql-pass created # 或者 [root@master ~]# vim mysql-secret.yaml apiVersion: v1 data: password: QWExMjM0NTY= kind: Secret metadata: creationTimestamp: null name: mysql-pass namespace: lnmp [root@master ~]# kubectl apply -f mysql-secret.yaml secret/mysql-pass created
2. 創(chuàng)建mysql的Service、deployment
2.1 這邊使用了自建的harbor鏡像倉庫,配置dockerconfigjson類型的secret
kubectl create secret docker-registry --dry-run=client docker-harbor --docker-server=registry.bianminchang.com:5001 --docker-username=admin --docker-password=li*****4 -o yaml > docker-secret.yaml [root@master lnmp]# vim docker-secret.yaml apiVersion: v1 data: .dockerconfigjson: eyJhdXRocyI6eyJyZWdpc3RyeS5iaWFubWluY2hhbmcuY29tOjUwMDEiOnsidXNlcm5hbWUiOiJhZG1pbiIsInBhc3N3b3JkIjoi************oiWVdSdGFXNDZiR2x3Y0dSd2NEUT0ifX19 kind: Secret metadata: creationTimestamp: null name: docker-harbor type: kubernetes.io/dockerconfigjson [root@master lnmp]# kubectl apply -f docker-secret.yaml secret/docker-harbor created
2.2 mysql的Service、deployment
[root@master lnmp]# cat mysql-deploy.yaml
#apiVersion: v1 # 這邊由于項目數(shù)據(jù)庫連接無法讀取集群內(nèi)的svc,使用服務器的hostPort
#kind: Service
#metadata:
# name: lnmp-mysql
# namespace: lnmp
# labels:
# app: lnmp-mysql
#spec:
# type:
# ports:
# - protocol: TCP
# port: 3306
# nodePort: 3306
# selector:
# app: lnmp-mysql
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: lnmp-mysql
namespace: lnmp
spec:
selector:
matchLabels:
app: lnmp-mysql
strategy:
type: Recreate
template:
metadata:
labels:
app: lnmp-mysql
spec:
nodeName: master
containers:
- name: mysql
image: registry.bianminchang.com:5001/lnmp/mysql:5.6
imagePullPolicy: IfNotPresent
env:
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-pass
key: password
ports:
- containerPort: 3306
hostPort: 3306 # 服務器3306 端口
name: mysql
livenessProbe:
tcpSocket:
port: 3306
initialDelaySeconds: 90
periodSeconds: 15
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
- name: etc-localtime
mountPath: /etc/localtime
imagePullSecrets: # 指定鏡像倉庫拉取信息
- name: docker-harbor
volumes:
- name: etc-localtime
hostPath:
path: /etc/localtime
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: mysql-pvc創(chuàng)建文件并檢測
[root@master lnmp]# kubectl apply -f mysql-deploy.yaml service/lnmp-mysql created deployment.apps/lnmp-mysql created [root@master lnmp]# kubectl get secrets NAME TYPE DATA AGE default-token-2cqf5 kubernetes.io/service-account-token 3 54m docker-harbor kubernetes.io/dockerconfigjson 1 6m16s [root@master lnmp]# kubectl get pod NAME READY STATUS RESTARTS AGE lnmp-mysql-5df7b46bcd-fk76k 1/1 Running 0 6m1s
PHP配置
創(chuàng)建php的service,hpa(水平自動伸縮),deployment
[root@master lnmp]# cat php-deploy.yaml
apiVersion: v1
kind: Service
metadata:
name: lnmp-php
namespace: lnmp
spec:
ports:
- port: 9000
selector:
app: lnmp-php
---
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: lnmp-php
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: lnmp-php
minReplicas: 1
maxReplicas: 10
targetCPUUtilizationPercentage: 85 # 當容器的CPU使用量超過85%時，調(diào)度器創(chuàng)建新的pod
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: lnmp-php
namespace: lnmp
labels:
app: php
spec:
replicas: 1
selector:
matchLabels:
app: lnmp-php
strategy:
type: Recreate
template:
metadata:
labels:
app: lnmp-php
spec:
containers:
- name: php
image: registry.bianminchang.com:5001/lnmp/php-fpm:7.0.4
#image: php:test
imagePullPolicy: IfNotPresent
ports:
- containerPort: 9000
name: php
volumeMounts:
- name: php-persistent-storage
mountPath: /usr/share/nginx/html
- name: etc-localtime
mountPath: /etc/localtime
imagePullSecrets: # 指定鏡像倉庫拉取信息
- name: docker-harbor
volumes:
- name: etc-localtime # docker 時區(qū)掛載
hostPath:
path: /etc/localtime
- name: php-persistent-storage
persistentVolumeClaim:
claimName: php-pvc
[root@master lnmp]# kubectl apply -f php-deploy.yaml
service/lnmp-php unchanged
horizontalpodautoscaler.autoscaling/lnmp-php created
deployment.apps/lnmp-php unchanged
[root@master lnmp]# kubectl get hpa
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
lnmp-php Deployment/lnmp-php <unknown>/85% 1 10 3 17sNginx配置
創(chuàng)建nginx的configmap，service，deployment
api deployment
[root@master nginx]# vim api-deploy.yaml
# HPA Pod 水平自動擴縮
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: nginx-hpa
namespace: lnmp
spec:
maxReplicas: 5
minReplicas: 2
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: api
targetCPUUtilizationPercentage: 80
---
apiVersion: v1
kind: Service
metadata:
name: api
namespace: lnmp
labels:
app: nginx
spec:
ports:
- name: nginx
port: 80
targetPort: 80
selector:
app: api
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: api
labels:
app: nginx
spec:
replicas: 1
selector:
matchLabels:
app: api
strategy:
type: Recreate
template:
metadata:
labels:
app: api
spec:
containers:
- name: nginx
image: registry.bianminchang.com:5001/lnmp/nginx:1.16.1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
name: nginx
livenessProbe:
httpGet:
path: /
port: 80
initialDelaySeconds: 20
periodSeconds: 10
volumeMounts:
- name: nginx-persistent-storage
mountPath: /usr/share/nginx/html
- name: factory-api-config
mountPath: /etc/nginx/conf.d/default.conf
subPath: default.conf
volumes:
- name: nginx-persistent-storage
persistentVolumeClaim:
claimName: php-pvc
- name: factory-api-config
configMap:
name: factory-api-config
factory deployment 項目后臺
[root@master nginx]# cat factory-deploy.yaml
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: factory-hpa
namespace: lnmp
spec:
maxReplicas: 5
minReplicas: 1
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: factory
targetCPUUtilizationPercentage: 80
---
apiVersion: v1
kind: Service
metadata:
name: factory
namespace: lnmp
labels:
app: nginx
spec:
ports:
- name: nginx
port: 80
targetPort: 80
selector:
app: factory
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: factory
labels:
app: nginx
spec:
replicas: 1
selector:
matchLabels:
app: factory
strategy:
type: Recreate
template:
metadata:
labels:
app: factory
spec:
containers:
- name: nginx
image: registry.bianminchang.com:5001/lnmp/nginx:1.16.1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
name: nginx
livenessProbe:
httpGet:
path: /
port: 80
initialDelaySeconds: 20
periodSeconds: 10
volumeMounts:
- name: nginx-persistent-storage
mountPath: /usr/share/nginx/html
- name: factory-config
mountPath: /etc/nginx/conf.d/default.conf
subPath: default.conf
volumes:
- name: nginx-persistent-storage
persistentVolumeClaim:
claimName: php-pvc
- name: factory-config
configMap:
name: factory-configfactory-front. deployment. 項目前端
[root@master nginx]# cat factory-front-deploy.yaml
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: nginx-hpa
namespace: lnmp
spec:
maxReplicas: 5
minReplicas: 1
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: factory-front
targetCPUUtilizationPercentage: 80
---
apiVersion: v1
kind: Service
metadata:
name: factory-front
namespace: lnmp
labels:
app: nginx
spec:
ports:
- name: nginx
port: 80
targetPort: 80
selector:
app: factory-front
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: factory-front
labels:
app: nginx
spec:
replicas: 1
selector:
matchLabels:
app: factory-front
strategy:
type: Recreate
template:
metadata:
labels:
app: factory-front
spec:
containers:
- name: nginx
image: registry.bianminchang.com:5001/lnmp/nginx:1.16.1
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
name: nginx
livenessProbe:
httpGet:
path: /
port: 80
initialDelaySeconds: 20
periodSeconds: 10
volumeMounts:
- name: nginx-persistent-storage
mountPath: /usr/share/nginx/html
- name: factory-front-config
mountPath: /etc/nginx/conf.d/default.conf
subPath: default.conf
volumes:
- name: nginx-persistent-storage
persistentVolumeClaim:
claimName: php-pvc
- name: factory-front-config
configMap:
name: factory-front-confignginx 配置
注意：
php與nginx不在同一個pod內(nèi),集群內(nèi)通訊用svc, fastcgi_pass lnmp-php:9000;
lnmp-php 為php的svc
[root@master nginx]# cat factory-config.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: nginx-wp-config
namespace: lnmp
data:
default.conf: |-
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html;
index index.html index.php;
location ~ \.php$ {
root /usr/local/nginx/html;
fastcgi_pass lnmp-php:9000;
fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html$fastcgi_script_name;
include fastcgi_params;
fastcgi_connect_timeout 60s;
fastcgi_read_timeout 300s;
fastcgi_send_timeout 300s;
}
}
---
apiVersion: v1
kind: ConfigMap
metadata:
name: factory-config
namespace: lnmp
data:
default.conf: |-
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html/jingtai_factory/backend/web;
index index.php index.html index.htm default.php default.htm default.html;
location ~ \.php$ {
root /usr/share/nginx/html/jingtai_factory/backend/web;
fastcgi_pass lnmp-php:9000;
fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html/jingtai_factory/backend/web$fastcgi_script_name;
include fastcgi_params;
fastcgi_connect_timeout 60s;
fastcgi_read_timeout 300s;
fastcgi_send_timeout 300s;
}
location / {
if (!-e $request_filename) {
rewrite ^/(.*) /index.php last;
break;
}
}
access_log /usr/share/nginx/html/factory.log;
error_log /usr/share/nginx/html/factory-err.log;
}
---
apiVersion: v1
kind: ConfigMap
metadata:
name: factory-front-config
namespace: lnmp
data:
default.conf: |-
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html/jingtai_factory_frontend;
index index.php index.html index.htm default.php default.htm default.html;
location ~ \.php$ {
root /usr/share/nginx/html/jingtai_factory_frontend;
fastcgi_pass lnmp-php:9000;
fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html/jingtai_factory_frontend$fastcgi_script_name;
include fastcgi_params;
fastcgi_connect_timeout 60s;
fastcgi_read_timeout 300s;
fastcgi_send_timeout 300s;
}
location / {
if (!-e $request_filename) {
rewrite ^/(.*) /index.html last;
break;
}
}
}
---
apiVersion: v1
kind: ConfigMap
metadata:
name: factory-api-config
namespace: lnmp
data:
default.conf: |-
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html/jingtai_factory/cloud;
index index.php index.html index.htm default.php default.htm default.html;
location ~ \.php$ {
root /usr/share/nginx/html/jingtai_factory/cloud;
fastcgi_pass lnmp-php:9000;
fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html/jingtai_factory/cloud$fastcgi_script_name;
include fastcgi_params;
fastcgi_connect_timeout 60s;
fastcgi_read_timeout 300s;
fastcgi_send_timeout 300s;
}
location / {
if (!-e $request_filename) {
rewrite ^/(.*) /index.html last;
break;
}
}
}
執(zhí)行結(jié)果
[root@master nginx]# kubectl get pod NAME READY STATUS RESTARTS AGE api-59c5b5ddbc-nbcb9 1/1 Running 0 16h factory-574c54f796-qzfnw 1/1 Running 0 16h factory-front-694779bbd8-55tgc 1/1 Running 0 16h lnmp-mysql-57445b5c4b-mpl62 1/1 Running 0 16h lnmp-php-5d7d5896b7-9sqtb 1/1 Running 0 16h
Ingress配置
[root@master ingress]# cat ingress-lnmp.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: lnmp-ingress
namespace: lnmp
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
spec:
ingressClassName: nginx
rules:
- host: backend.k8s.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: factory
port:
number: 80
- host: api.k8s.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: api
port:
number: 80
- host: factory.k8s.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: factory-front
port:
number: 80
[root@master ingress]# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
lnmp-ingress nginx backend.k8s.com,api.k8s.com,factory.k8s.com 10.99.132.137 80 16h
總結(jié)
以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。
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