docker下载地址:
https://get.docker.com/builds/Linux/x86_64/docker-1.13.1.tgz
docker的rpm包下载网址:
http://yum.dockerproject.org/repo/main/centos/7/Packages/
##docker中文网址:
http://www.docker.org.cn/thread/126.html
##docker官网文档库:
https://docs.docker.com/engine/installation/linux/centos/
##dockerfile官网 命令解释:
https://docs.docker.com/engine/reference/builder/#cmd
##docker-compose官网 命令解释:
https://docs.docker.com/compose/compose-file/
##docker官网 docker run命令解释:
https://docs.docker.com/engine/reference/run/
##docker官网: 使用Docker容器启动应用程序
http://hadoop.apache.org/docs/r3.1.0/hadoop-yarn/hadoop-yarn-site/DockerContainers.html
##docker官方镜像仓库
https://hub.docker.com/search/
centos镜像下载地址:
https://hub.docker.com/_/centos
lsb_release -a ##查看系统版本
uname -r ##查看内核版本
yum list installed | grep docker ##查看是否已安装docker列表
yum install -y docker ##yum命令安装
docker -v ##查看docker版本
systemctl start docker ##启动docker
systemctl status docker ##查看docker状态
systemctl enable docker ##设置开机自启
docker --help ##查看docker命令帮助
##docker下载地址:
https://get.docker.com/builds/Linux/x86_64/docker-1.13.1.tgz
##解压docker
tar --strip-components=1 -zxvf docker-1.13.1.tgz -C /usr/local/bin
##查看docker版本
docker -v
##设置docker开机启动
vi /usr/lib/systemd/system/docker.service ##添加如下内容:
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network.target
[Service]
Type=notify
ExecStart=/usr/local/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
##启动docker
systemctl start docker.service ##启动docker
systemctl enable docker.service ##设置开机启动
systemctl status docker.service ##查看docker运行情况
docker --help ##查看命令帮助
docker search centos ##搜索官方仓库的centos镜像(需要访问外网)
docker pull centos ##拉取官方仓库最新版本的centos
docker images ##查看本地镜像
##启动本地镜像,生成容器并查看centos版本
docker run -it 300e315adb2f /bin/bash
cat /etc/redhat-release
##下载指定版本的centos
docker pull centos:centos7.9.2009
##首先使用tag命令打标签对镜像重命令
docker tag 8652b9f0cb4c centos7.9:v1
docker rmi -f centos:centos7.9.2009
docker images
##编辑Dockerfile文件
vi Dockerfile
FROM centos7.9:v1
MAINTAINER bonc
USER root
# install dev tools
RUN yum install -y autoconf make automake wget httpd-tools zip vim
RUN yum install -y curl tar unzip which sudo initscripts openssh-server openssh-clients rsync
RUN yum install -y gcc-c++
RUN yum install -y pcre pcre-devel
RUN yum install -y zlib zlib-devel
RUN yum install -y openssl openssl-devel
# clock sync
RUN rm -f /etc/localtime
RUN ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# passwordless ssh
RUN echo "root"| passwd --stdin root
RUN ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_dsa_key
RUN ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key
RUN ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_ecdsa_key
RUN ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_ed25519_key
RUN ssh-keygen -q -N "" -t rsa -f /root/.ssh/id_rsa
RUN cp /root/.ssh/id_rsa.pub /root/.ssh/authorized_keys
WORKDIR /root
EXPOSE 22
USER root
##构建基础镜像
docker build --help ##查看docker build命令提示
docker build -t centos7.9:20210106 -f Dockerfile . ##使用Dockerfile生成镜像
docker images ##查看刚生成的镜像
##启动基础镜像,直接在生成的容器里面进行操作
docker run --name httpd001 -it centos7.9:20210106 /bin/bash
yum install -y httpd ##容器里面yum安装httpd
echo "2021 hello world" >/var/www/html/index.html
##退出容器并使用commit保存容器的状态为新镜像httpd001:v1
exit
docker commit e18d811e46b8 httpd001:v1
##启动commit方式生成的镜像httpd001:v1,并启动httpd服务
docker run --name httpd001 -it -p 10080:80 httpd001:v1 /bin/bash
/usr/sbin/httpd -DFOREGROUND
##web查看
http://192.168.30.1:10080/
##准备相关文件
其中,
beh_env 为环境变量文件
my.repo 为本地yum源
jdk,tomcat 为原始解压包后重命名
start_tomcat.sh 为tomact启动脚本
Dockerfile_tomcat 为生成tomcat镜像的Dockerfile文件
cat start_tomcat.sh
#!/bin/bash
source /etc/profile
/usr/local/tomcat/bin/startup.sh
ps -ef | grep -v $0 | grep -v grep > /dev/null
while [[ $? -eq 0 ]]
do
sleep 20
ps -ef | grep -v $0 | grep -v grep > /dev/null
done
cat beh_env
export JAVA_HOME=/usr/local/jdk
export CLASSPATH=$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$CLASSPATH
export TOMCAT_HOME=/usr/local/tomcat
export PATH=$JAVA_HOME/bin:$TOMCAT_HOME/bin:$PATH
cat Dockerfile_tomcat
FROM centos7.9:20210106
MAINTAINER bonc
USER root
# install dev tools
RUN rm -rf /etc/yum.repos.d/*
ADD my.repo /etc/yum.repos.d
RUN yum install -y ftp lrzsz
# Set password
RUN echo "root"| passwd --stdin root
# Add files
ADD jdk /usr/local/jdk
ADD tomcat /usr/local/tomcat
ADD beh_env /usr/local/beh_env
ADD start_tomcat.sh /usr/local/start_tomcat.sh
#Set env
RUN echo "source /usr/local/beh_env" >> /etc/profile
WORKDIR /usr/local/tomcat/bin
EXPOSE 8080
CMD /usr/local/start_tomcat.sh
##创建并查看生成的tomcat镜像
docker build -t tomcat:v1 -f Dockerfile_tomcat .
docker images
##启动tomcat容器
docker run --name tomcat18080 -itd -p 18080:8080 tomcat:v1
docker ps -a ##查看当前的所有容器
##web访问验证:
http://192.168.30.1:18080/
##使用save命令将docker01节点上的镜像打包成文件
docker save tomcat:v1 > tomcat.tar
##将打包文件传输到docker02节点;
##使用load命令将docker02节点的打包文件加载为镜像
docker load < tomcat.tar