[系统运维]Dockerfile镜像部署

一、环境部署

构建SSH镜像

1、创建镜像目录方便管理

mkdir /opt/sshd
cd /opt/sshd

2、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 <jzm 2022-3-9>
#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登录码
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  这保存在/etc/ssh/sshd_config 中的hostkey #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"] -D指的是守护进程 #指定默认执行的命令

3、生成镜像

docker build -t sshd:centos .

4、启动容器并修改root登录码

docker run -d -P sshd:centos
docker ps -a
ssh localhost -p 49163

构建Systemctl镜像

1、创建镜像目录方便管理

mkdir /opt/systemctl
cd /opt/systemctl

2、创建编写dockerfile文件

vim Dockerfile
 
FROM sshd:centos
MAINTAINER this is systemctl image <jzm 2022-03-09>
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" ] #创建挂载点

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

3、 生成镜像



1、进入容器

docker exec -it 559830faa751 bash
systemctl status sshd
方法二：
docker run -d -P --privileged sshd:centos /usr/sbin/init &
#前提在dockerfile中把CMD命令注释掉

构建tomcat镜像

1、构建tomcat镜像

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

3、生成镜像

1、 浏览器访问测试

http://192.168.80.3:8080

1、关闭防火墙

[root@localhost ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@localhost ~]# setenforce 0
setenforce: SELinux is disabled

2、拉取centos:7镜像

[root@localhost ~]# docker pull centos:7
7: Pulling from library/centos
2d473b07cdd5: Pull complete
Digest: sha256:9d4bcbbb213dfd745b58be38b13b996ebb5ac315fe75711bd618426a630e0987
Status: Downloaded newer image for centos:7
docker.io/library/centos:7
[root@localhost ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
nginx        latest    d3efa07f874b   3 days ago    132MB
centos       7         eeb6ee3f44bd   4 weeks ago   204MB

3、自定义网络

二、部署nginx（容器IP 为 172.18.0.10）

mkdir /opt/nginx
cd /opt/nginx/
 
上传 nginx-1.12.0.tar.gz、wordpress-4.9.4-zh_CN.tar.gz 到 /opt/nginx/ 目录中
mkdir /opt/nginx/html
tar zxvf wordpress-4.9.4-zh_CN.tar.gz -C /opt/nginx/html
 
vim Dockerfile
 
FROM centos:7
MAINTAINER this is nginx image <wl>
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make
RUN useradd -M -s /sbin/nologin nginx
ADD nginx-1.12.0.tar.gz /usr/local/src/
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
ADD nginx.conf /usr/local/nginx/conf/
#ADD wordpress-4.9.4-zh_CN.tar.gz /usr/local/nginx/html/
RUN chmod 777 -R /usr/local/nginx/html/
EXPOSE 80
EXPOSE 443
ENTRYPOINT [ "/usr/local/nginx/sbin/nginx", "-g", "daemon off;" ]
 
 
docker build -t nginx:lnmp .
 
docker run -d --name nginx -p 80:80 -v /opt/nginx/html:/usr/local/nginx/html --net mynetwork --ip 172.18.0.10 nginx:lnmp　　

三、部署mysql（容器IP 为 172.18.0.20）

mkdir /opt/mysqld
cd /opt/mysqld
 
上传 mysql-boost-5.7.20.tar.gz 到 /opt/mysqld 目录中
 
vim Dockerfile
 
FROM centos:7

MAINTAINER this is mysql image <jzm 2022-03-09>
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 -j4 && make install
RUN chown -R mysql:mysql /usr/local/mysql/
ADD my.cnf /etc/my.cnf
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
RUN systemctl enable mysqld
VOLUME [ "/usr/local/mysql" ]
CMD /usr/sbin/init

vim my.cnf
[client]
port = 3306
socket = /usr/local/mysql/mysql.sock

[mysql]
port = 3306
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

docker build -t mysql:lnmp .

docker run --name=mysql -d --privileged -v /usr/local/mysql --net mynetwork --ip 172.18.0.20 mysql:lnmp /usr/sbin/init

未完待续