打造专属的docker开发环境（二）-centos安装httpd

后面开发环境实际上就是在docker安装的centos8上面安装各类开发使用的软件，即centos8安装httpd

1.用yum安装httpd

命令为：yum install httpd，后续直接输入y确认（当然也可以在install前面加上 -y 不用手动确认），一直到出现Complete!为止

命令：yum install httpd

2.设置httpd服务随系统一起启动

命令：systemctl enable httpd

[root@0f095f9b6160 /]# systemctl enable httpd
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service → /usr/lib/systemd/system/httpd.service.
[root@0f095f9b6160 /]#

3.启动httpd服务

命令：systemctl start httpd
哦哦报错了"System has not been booted with systemd as init system (PID 1). Can't operate.Failed to connect to bus: Host is down",如遇到这个问题是创建镜像和启动容器方式有问题，请参照打造专属的docker开发环境（一）-centos安装

[root@0f095f9b6160 /]# systemctl start httpd
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

正常情况启动成功没有任何报错信息

[root@54aa323af4dd /]# systemctl start httpd
[root@54aa323af4dd /]#

4.查看httpd服务

命令：systemctl status httpd

[root@54aa323af4dd /]# systemctl status httpd
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2021-06-29 03:32:17 UTC; 3min 56s ago
     Docs: man:httpd.service(8)
 Main PID: 189 (httpd)
   Status: "Running, listening on: port 80"
    Tasks: 213 (limit: 42049)
   Memory: 15.7M
   CGroup: /docker/54aa323af4dda02b7af488eacfb237bb81e273b5cec4cdc45c9a97c9361bb0a7/system.slice/httpd.service
           ├─189 /usr/sbin/httpd -DFOREGROUND
           ├─190 /usr/sbin/httpd -DFOREGROUND
           ├─191 /usr/sbin/httpd -DFOREGROUND
           ├─192 /usr/sbin/httpd -DFOREGROUND
           └─193 /usr/sbin/httpd -DFOREGROUND

Jun 29 03:32:17 54aa323af4dd systemd[1]: Starting The Apache HTTP Server...
Jun 29 03:32:17 54aa323af4dd httpd[189]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.2. Set the 'ServerName' dir>
Jun 29 03:32:17 54aa323af4dd systemd[1]: Started The Apache HTTP Server.
Jun 29 03:32:17 54aa323af4dd httpd[189]: Server configured, listening on: port 80
lines 1-19/19 (END)

输入冒号：及q 退出

4.测试在系统中访问服务

命令： curl http://127.0.0.1:80
应该返回html页面

5.在本机访问docker中的centos系统中的httpd服务，需要先把容器创建为镜像再通过80端口映射出来，才可以访问

5.1 找出容器ID

命令：docker ps -a

(base) wangheng@localhost ~ % docker ps -a 
CONTAINER ID   IMAGE                                                   COMMAND                  CREATED         STATUS                      PORTS                                            NAMES
f0404b39ed3f   quay.io/centos/centos                                   "/usr/sbin/init"         4 minutes ago   Up 4 minutes                                                                 centos7-wh-dev

5.2 将容器ID创建为镜像

命令： docker commit -a "wh" -m "centos7+httpd" f0404b39ed3f centos7-wh-dev:v1

(base) wangheng@localhost ~ % docker commit -a "wh" -m "centos7+httpd" f0404b39ed3f  centos7-wh-dev:v1

5.3 查看镜像

命令： docker images

(base) wangheng@localhost ~ %  docker images
REPOSITORY                                       TAG       IMAGE ID       CREATED          SIZE
centos7-wh-dev                                   v1        7f25397cb37b   32 seconds ago   255MB

5.4 从新建的镜像启动容器

新增了run 的-p参数
命令：docker run -p 80:80 -itd --privileged --name centos7-wh-dev-v1 centos7-wh-dev:v1 /usr/sbin/init

(base) wangheng@localhost ~ % docker run -p 80:80  -itd --privileged --name centos7-wh-dev-v1 centos7-wh-dev:v1  /usr/sbin/init
3c9c4cf21c1f18bbfb5a4651df6278dc0f59fee84396b4156c29b887c8b98749
(base) wangheng@localhost ~ %

6.在浏览器中输入http://localhost/ 有centos提供的页面表示httpd服务在启作用

image.png

7.自己建立一个页面通过浏览器访问

进入容器
docker exec -it centos7-wh-dev-v1 /bin/bash

进入 /var/www/html/ 目录创建一个index.html

[root@a2b08ad4465e /]# cd /var/www/html/
[root@a2b08ad4465e html]# vi index.html