Docker镜像实战（ssh、systemctl、nginx、tomcat、mysql）

时间：2024-10-31 21:06:08

Docker镜像实战

1、构建ssh镜像

2、构建systemctl 镜像

3、构建nginx镜像

4、构建tomcat镜像

5、构建mysql镜像

1、构建ssh镜像：

创建镜像目录

mkdir /opt/sshd

cd /opt/sshd

创建编写dockerfile文件　

vim Dockerfile

#第一行必须指明基于的基础镜像

FROM centos:7

#作者信息

MAINTAINER this is ssh image <lv>

#镜像的操作指令

RUN yum -y update

RUN yum -y install openssh* net-tools lsof telnet passwd	#安装一些需要的程序

RUN echo 'abc1234' | passwd --stdin root			#修改root密码

RUN sed -i 's/UsePAM yes/UsePAM no/g' /etc/ssh/sshd_config	#不使用PAM认证

RUN sed -ri '/^session\s+required\s+pam_loginuid.so/s/^/#/' /etc/pam.d/sshd	#取消pam限制

RUN ssh-keygen -t rsa -A					#生成密钥认证文件

RUN mkdir -p /root/.ssh && chown root.root /root && chmod 700 /root/.ssh

EXPOSE 22							#开启22号端口

CMD ["/usr/sbin/sshd" , "-D"]					#指定默认执行的命令　　

生成镜像，启动容器并修改root密码

docker build -t sshd:centos .

docker run -d -P sshd:centos

docker ps -a

ssh localhost -p 49155

　　

2、构建systemctl镜像：

创建镜像目录

mkdir /opt/systemctl

cd /opt/systemctl

创建编写dockerfile文件

vim Dockerfile

FROM sshd:centos

MAINTAINER this is systemctl image <lv>

ENV container docker

#除了systemd-tmpfiles-setup.service，删除其它所有文件

RUN (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \

rm -f /lib/systemd/system/multi-user.target.wants/*; \

rm -f /etc/systemd/system/*.wants/*; \

rm -f /lib/systemd/system/local-fs.target.wants/*; \

rm -f /lib/systemd/system/sockets.target.wants/*udev*; \

rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \

rm -f /lib/systemd/system/basic.target.wants/*;\

rm -f /lib/systemd/system/anaconda.target.wants/*;

VOLUME [ "/sys/fs/cgroup" ]

#CMD ["/usr/sbin/init"]

生成镜像

docker build -t systemd:centos .

//启动容器，并挂载宿主机目录挂载到容器中，和进行初始化

docker run --privileged -it -v /sys/fs/cgroup:/sys/fs/cgroup:ro systemd:centos /sbin/init &

#--privileged：使container内的root拥有真正的root权限。否则，container内的root只是外部的一个普通用户权限。

docker ps -a

进入容器

docker exec -it a0d624d2bfa9 bash

systemctl status sshd

方法二：

docker run -d -P --privileged sshd:centos /usr/sbin/init &

　　

3、构建nginx镜像：

创建镜像目录

mkdir /opt/nginx

cd /opt/nginx/

cp /opt/nginx-1.12.0.tar.gz /opt/nginx

编写dockerfile文件

vim Dockerfile

#基于基础镜像

FROM centos:7

#用户信息

MAINTAINER this is nginx image <lv>

#添加环境包

RUN yum -y update

RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make

RUN useradd -M -s /sbin/nologin nginx

#上传nginx软件压缩包，并解压

ADD nginx-1.12.0.tar.gz /usr/local/src/

#指定工作目录

WORKDIR /usr/local/src/nginx-1.12.0

RUN ./configure \

--prefix=/usr/local/nginx \

--user=nginx \

--group=nginx \

--with-http_stub_status_module && make && make install

ENV PATH /usr/local/nginx/sbin:$PATH

#指定http和https端口

EXPOSE 80

EXPOSE 443

RUN echo "daemon off;" >> /usr/local/nginx/conf/nginx.conf	#关闭 nginx 在后台运行

#添加宿主机中run.sh到容器中

ADD run.sh /run.sh

RUN chmod 755 /run.sh

CMD ["/run.sh"]

编写脚本

vim run.sh

#!/bin/bash

/usr/local/nginx/sbin/nginx

生成镜像

//创建新镜像

docker build -t nginx:centos .  #  记住最后有一个 “.”

docker run -d -P nginx:centos	#由于dockerfile将nginx设为前台启动，所以这里不需要加命令

docker ps -a

5df9e4383b96    nginx:centos        "/run.sh"      15 seconds ago    Up 15 seconds    0.0.0.0:32769->80/tcp, 0.0.0.0:32768->443/tcp   silly_davinci

浏览器访问：

20.0.0.40:32768

　　

4、构建tomcat 镜像：

创建镜像目录

mkdir /opt/tomcat

cd /opt/tomcat

cp /opt/jdk-8u91-linux-x64.tar.gz /opt/tomcat

cp /opt/apache-tomcat-8.5.16.tar.gz /opt/tomcat

编写dockerfile文件

vim Dockerfile

FROM centos:7

MAINTAINER this is tomcat image <clj>

ADD jdk-8u91-linux-x64.tar.gz /usr/local/

WORKDIR /usr/local/

RUN mv jdk1.8.0_91 /usr/local/java

ENV JAVA_HOME /usr/local/java

ENV JRE_HOME ${JAVA_HOME}/jre

ENV CLASSPATH .:${JAVA_HOME}/lib:${JRE_HOME}/lib

ENV PATH $JAVA_HOME/bin:$PATH

ADD apache-tomcat-8.5.16.tar.gz /usr/local/

WORKDIR /usr/local/

RUN mv apache-tomcat-8.5.16 /usr/local/tomcat

EXPOSE 8080

#CMD ["/usr/local/tomcat/bin/catalina.sh","run"]

ENTRYPOINT ["/usr/local/tomcat/bin/catalina.sh","run"]

生成镜像

docker build -t tomcat:centos .

docker run -d --name tomcat01 -p 1216:8080 tomcat:centos

浏览器访问测试：

20.0.0.40：1216

　　

5、构建mysql镜像：

创建镜像目录

mkdir /opt/mysqld

cd /opt/mysqld

创建编写dockerfile文件

vim Dockerfile

FROM centos:7

MAINTAINER this is mysql image <clj>

RUN yum -y install gcc gcc-c++ ncurses ncurses-devel bison cmake make

RUN useradd -M -s /sbin/nologin  mysql

ADD mysql-boost-5.7.20.tar.gz /usr/local/src/

WORKDIR /usr/local/src/mysql-5.7.20/

RUN cmake \

-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \

-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \

-DSYSCONFDIR=/etc \

-DSYSTEMD_PID_DIR=/usr/local/mysql \

-DDEFAULT_CHARSET=utf8  \

-DDEFAULT_COLLATION=utf8_general_ci \

-DWITH_INNOBASE_STORAGE_ENGINE=1 \

-DWITH_ARCHIVE_STORAGE_ENGINE=1 \

-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \

-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \

-DMYSQL_DATADIR=/usr/local/mysql/data \

-DWITH_BOOST=boost \

-DWITH_SYSTEMD=1 && make && make install

RUN chown -R mysql:mysql /usr/local/mysql/

RUN rm -rf /etc/my.cnf

ADD my.cnf /etc/

RUN chown mysql:mysql /etc/my.cnf

ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH

WORKDIR /usr/local/mysql/

RUN bin/mysqld \

--initialize-insecure \

--user=mysql \

--basedir=/usr/local/mysql \

--datadir=/usr/local/mysql/data

RUN cp /usr/local/mysql/usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/

EXPOSE 3306

ADD run.sh /usr/local/src

RUN chmod 755 /usr/local/src/run.sh

RUN sh /usr/local/src/run.sh

#CMD ["/usr/sbin/init"]

编写my.cnf 脚本

vim my.cnf

[client]

port = 3306

default-character-set=utf8

socket = /usr/local/mysql/mysql.sock

[mysql]

port = 3306

default-character-set=utf8

socket = /usr/local/mysql/mysql.sock

[mysqld]

user = mysql

basedir = /usr/local/mysql

datadir = /usr/local/mysql/data

port = 3306

character_set_server=utf8

pid-file = /usr/local/mysql/mysqld.pid

socket = /usr/local/mysql/mysql.sock

server-id = 1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES

编写run.sh 脚本

vim run.sh

#!/bin/bash

/usr/local/mysql/bin/mysqld

systemctl enable mysqld

创建新镜像，启动容器，并初始化

docker build -t mysql:centos .

#启动容器，并进行初始化

docker run --name=mysql_server -d -P --privileged mysql:centos /usr/sbin/init &

进容器给权限

docker ps -a

CONTAINER ID   IMAGE          COMMAND             CREATED          STATUS          PORTS                     NAMES

f9a4d8f6c65f   mysql:centos   "/usr/sbin/init"    17 seconds ago   Up 16 seconds   0.0.0.0:49153->3306/tcp   mysql_server

进入容器，授权远程连接mysql

docker exec -it f9a4d8f6c65f /bin/bash

mysql -u root -p

grant all privileges on *.* to 'root'@'%' identified by 'abc123';

grant all privileges on *.* to 'root'@'localhost' identified by 'abc123';

flush privileges;

在客户端连接mysql容器

mysql -h 20.0.0.40 -u root -P 49153 -pabc123

　　

　　

　　

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