前言
- appphp(php代码),openresty(nginx webserver),php-fpm(php的运行环境)
- dockerfile 和 yaml文件
- docker iamges仓库
PHP项目在Docker中如何部署运行?
PHP应用的运行方式
PHP应用的运行方式一般有Apache mod_php 模式、Nginx(FastCgi)+PHP-FPM模式、Swoole常驻内存Daemon模式。
Docker单容器
Apache mod_php 模式和Swoole常驻内存Daemon模式本身就是单程序,那么在Docker中入口运行程序直接为应用程序即可。
Nginx(FastCgi)+PHP-FPM模式需要nginx和php-fpm 2个程序,这样Docker中就需要运行多个程序,需要有进程守护类软件来运行多个程序。
Docker Hub中PHP官方镜像包已经包括Apache mod_php 模式的镜像包,Kubernets官方PHP项目实例GuestBook中就是采用这种模式的镜像包。
Docker多容器配合
Docker官方倡导容器单一职责,也就是一个容器只运行一个程序。
kubernets(k8s)部署运行
① appphp(wwek/k8s-php-thinkphp-hello:app-v1)php代码容器、
② php-fpm(wwek/k8s-php-thinkphp-hello:php-fpm-7.2) 、
③ openresty(wwek/k8s-php-thinkphp-hello:openresty)。
apphp、php-fpm、openresty三个容器都在一个Pod(8s-php-thinkphp-hello)中,appphp容器作为initContainers初始化容器使用。
初始化容器的时候会把php代码复制到wwwroot(volume)中php-fpm和openresty都挂载wwwroot(volume)。
openresty的upstream php 使用域名php-fpm。使用hostAliases把域名php-fpm解析为127.0.0.1(在同一个Pod中网络是共享的,所以用127.0.0.1)
# Service apiVersion: v1 kind: Service metadata: name: k8s-php-thinkphp-hello labels: app: k8s-php-thinkphp-hello spec: type: ClusterIP ports: - port: 80 targetPort: http protocol: TCP name: http selector: app: k8s-php-thinkphp-hello --- # deployment apiVersion: apps/v1beta2 kind: Deployment metadata: name: k8s-php-thinkphp-hello labels: app: k8s-php-thinkphp-hello spec: replicas: 1 selector: matchLabels: app: k8s-php-thinkphp-hello template: metadata: labels: app: k8s-php-thinkphp-hello spec: #做一个emptyDir类型,名为wwwroot的volume 用于多个容器共享同一个挂载 volumes: - name: wwwroot emptyDir: {} # 私有docker 镜像仓库 # imagePullSecrets: # - name: registrykey-qlcoud-1 # 自定义设置POD的hosts hostAliases: - ip: "127.0.0.1" hostnames: - "php-fpm" initContainers: #php程序本身 - name: appphp image: "wwek/k8s-php-thinkphp-hello:app-v1" imagePullPolicy: Always # 复制php程序文件到wwwroot volume command: ["sh", "-c", "cp -r /var/www/k8s-php-thinkphp-hello /appdata"] volumeMounts: - mountPath: /appdata name: wwwroot containers: #php-fpm php运行环境 - name: php-fpm image: "wwek/k8s-php-thinkphp-hello:php-fpm-7.2" imagePullPolicy: Always volumeMounts: - mountPath: /var/www name: wwwroot #openrsty webserver - name: openresty image: "wwek/k8s-php-thinkphp-hello:openresty" imagePullPolicy: Always volumeMounts: - mountPath: /var/www name: wwwroot ports: - name: http containerPort: 80 protocol: TCP # livenessProbe: # httpGet: # path: / # port: http # readinessProbe: # httpGet: # path: / # port: http resources: {} --- # Ingress apiVersion: extensions/v1beta1 kind: Ingress metadata: name: k8s-php-thinkphp-hello labels: app: k8s-php-thinkphp-hello spec: rules: - host: k8sphpthinkphp.com http: paths: - path: / backend: serviceName: k8s-php-thinkphp-hello servicePort: http kubectl apply -f k8s-php-thinkphp-hello.yml kubectl get pods |grep k8s-php-thinkphp-hello kubectl get service |grep k8s-php-thinkphp-hello kubectl get ingress |grep k8s-php-thinkphp-hello
把http://k8sphpthinkphp.com hosts解析到Ingress 的ip
访问http://k8sphpthinkphp.com/ ,可以看到thinkphp的欢迎页面。
docker-compose部署运行
version: '2' services: ### Applications Code Container ############################# appphp: image: wwek/k8s-php-thinkphp-hello:app-v1 build: context: ./appphp dockerfile: "Dockerfile" ### PHP-FPM Container ####################################### php-fpm: image: wwek/k8s-php-thinkphp-hello:php-fpm-7.2 build: context: ./php-fpm dockerfile: "Dockerfile" volumes_from: - appphp environment: - RUN_MODE=prd - MYSQL_HOSTNAME= \ - MYSQL_USERNAME= \ - MYSQL_PASSWORD= depends_on: - appphp expose: - "9000" networks: - backend ### OPENRESTY Server Container ################################## openresty: image: wwek/k8s-php-thinkphp-hello:openresty build: context: ./openresty dockerfile: "Dockerfile" volumes_from: - appphp ports: - "80:80" - "443:443" depends_on: - php-fpm networks: - frontend - backend ### Networks Setup ############################################ networks: frontend: driver: "bridge" backend: driver: "bridge" ### Volumes Setup ############################################# volumes: redis: driver: "local"
docker-compose up -d
docker-compose up -d --build
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