制做docker镜像

1、制做JAVA运行环境镜像

我的基础镜像是基于官网centos 7.2版本制作，没有可以提前下载好

#docker pull docker.io/centos

[root@R210 ~]# mkdir -p /opt/Dockerfile/JRE1.7

[root@R210 ~]# cd /opt/Dockerfile/JRE1.7

[root@R210 jre1.7]# ls

Dockerfile server-jre-7u80-linux-x64.tar.gz

[root@R210 jre1.7]# cat Dockerfile

FROM centos:latest

MAINTAINER yy ENV JAVA_VERSION "7u80"ENV JDK_VERSION "1.7.0_80"RUN rpm --rebuilddb \    && yum --setopt=tsflags=nodocs -y install \    net-tools \    && rm -rf /var/cache/yum/* && yum clean all#RUN rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-7 \#    && yum update && yum install net-tools -y \RUN mkdir -p /usr/lib/jvm COPY server-jre-${JAVA_VERSION}-linux-x64.tar.gz /usr/lib/jvm/server-jre-${JAVA_VERSION}-linux-x64.tar.gz RUN cd /usr/lib/jvm \    && tar -zxvf server-jre-${JAVA_VERSION}-linux-x64.tar.gz \    && rm -rf /usr/lib/jvm/server-jre-${JAVA_VERSION}-linux-x64.tar.gz \    && ln -s /usr/lib/jvm/jdk${JDK_VERSION}/bin/java /bin/ \    && cd /usr/lib/jvm/jdk${JDK_VERSION} \    && find . -type f -name '*.html' -delete \    && find . -type f -name 'COPYRIGHT' -delete \    && find . -type f -name 'LICENSE' -delete \    && find . -type f -name 'NOTICE' -delete \    && find . -type f -name '3RDPARTY' -delete \    && find . -type f -name '*.txt' -delete \    && find . -type f -name '*.bat' -delete \    #jre包可以再做精简

2.制作生产环境Tomcat镜像

[root@R210 ~]# mkdir -p /opt/Dockerfile/tomcat7

[root@R210 ~]# cd /opt/Dockerfile/tomcat7

[root@R210 tomcat7]# ls

apache-tomcat-7.0.70.tar.gz Dockerfile

[root@R210 tomcat7]# cat Dockerfile

FROM java7:7u80MAINTAINER yyENV TOMCAT_VERSION 7.0.70ENV CATALINA_HOME /tomcatENV APP_DIR ${CATALINA_HOME}/webapps/RUN rpm --rebuilddb \    && yum --setopt=tsflags=nodocs -y install \    apr tomcat-native \    && rm -rf /var/cache/yum/* && yum clean all#RUN wget -q https://archive.apache.org/dist/tomcat/tomcat-${TOMCAT_MAJOR_VERSION}/v${TOMCAT_MINOR_VERSION}/bin/apache-tomcat-${TOMCAT_MINOR_VERSION}.tar.gz#https://archive.apache.org/dist/tomcat/tomcat-7/v7.0.70/bin/apache-tomcat-7.0.70.tar.gzCOPY apache-tomcat-${TOMCAT_VERSION}.tar.gz apache-tomcat-{TOMCAT_VERSION}.tar.gzRUN tar zxf apache-tomcat-*.tar.gz && \    rm apache-tomcat-*.tar.gz && \    mv apache-tomcat* tomcat && \    rm -rf tomcat/webapps/* && \    sed -i '/protocol="AJP\/1.3"/d' /tomcat/conf/server.xml    EXPOSE 8080 ENTRYPOINT ["/tomcat/bin/catalina.sh","run"]ONBUILD ADD . ${APP_DIR}

制作镜像

[root@R210 tomcat7]#docker build -t tomcat7:7.0.70 .

从镜像启动一个tomcat容器，把测试程序部署到/www/app1/webapps下从浏览器访问

[root@R210 ]# docker run -d -p 8002:8080 --name mytomcat7 -v /www/app1/webapps/:/tomcat/webapps tomcat7:7.0.70

3.制作数据库mariadb镜像

[root@XSMM mk_mariadb]# ls

Dockerfile  mariadb-func.sh  mariadb.repo  run.sh

[root@XSMM-WEB mk_mariadb]# cat Dockerfile

FROM centos:latestMAINTAINER yyENV TZ "Asia/Shanghai"ENV TERM xtermCOPY mariadb.repo /etc/yum.repos.d/ RUN \    yum update -y && \    yum install -y epel-release && \    yum install -y MariaDB-server hostname net-tools pwgen && \    yum clean all && \    rm -rf /var/lib/mysql/* && \    rm -rf /var/cache/yum/*COPY mariadb-func.sh   /COPY run.sh /RUN chmod 755 *.shVOLUME ["/var/lib/mysql"]EXPOSE 3306CMD ["/run.sh"]

[root@XSMM-WEB mk_mariadb]# cat mariadb-func.sh

#!/bin/sh########################################################## 循环检测数据库进程是否正常启动、服务是否可用          ##########################################################function wait_for_db() {  set +e    echo "等待数据库启动..."  while true; do    if grep "ready for connections" $ERROR_LOG; then      break;    else      echo "继续等待数据库启动完成..." && sleep 1    fi  done    set -e}########################################################## 关闭数据库进程#########################################################function terminate_db() {  local pid=$(cat $VOLUME_HOME/mysql.pid)  echo "捕获进程信号&关闭数据库进程..."  kill -TERM $pid    while true; do    if tail $ERROR_LOG | grep -s -E "mysqld .+? ended" $ERROR_LOG; then         break;    else sleep 0.5;    fi  done}

##########################################################如果数据目录为空,调用 mysql_install_db 脚本生成默认库# 全局变量:#   $VOLUME_HOME#   $ERROR_LOG#########################################################function install_db() {  if [ ! -d $VOLUME_HOME/mysql ]; then    echo "=> 数据目录 $VOLUME_HOME为空,数据库未初始化..."    echo "=> 正在安装 MariaDB..."    mysql_install_db --user=mysql > /dev/null 2>&1    echo "=> MariaDB 安装完成!"  else    echo "=> 使用已经存在数据目录文件."  fi  ########################################################## 移除之前容器运行留下的日志文件,保留当前容器生成的日志#########################################################    if [ -f $ERROR_LOG ]; then    echo "----------------- Previous error log -----------------"    tail -n 20 $ERROR_LOG    echo "----------------- Previous error log ends -----------------" && echo    mv -f $ERROR_LOG "${ERROR_LOG}.old";  fi  touch $ERROR_LOG && chown mysql $ERROR_LOG}

########################################################## 创建用户# 变量:#   $MARIADB_USER#   $MARIADB_PASS#########################################################function create_mysql_user() {  echo "Creating DB admin user..." && echo  local users=$(mysql -s -e "SELECT count(User) FROM mysql.user WHERE User='$MARIADB_USER'")  if [[ $users == 0 ]]; then    echo "=> Creating MariaDB user '$MARIADB_USER' with '$MARIADB_PASS' password."    mysql -uroot -e "CREATE USER '$MARIADB_USER'@'%' IDENTIFIED BY '$MARIADB_PASS'"  else    echo "=> User '$MARIADB_USER' exists, updating its password to '$MARIADB_PASS'"    mysql -uroot -e "SET PASSWORD FOR '$MARIADB_USER'@'%' = PASSWORD('$MARIADB_PASS')"  fi;    mysql -uroot -e "GRANT ALL PRIVILEGES ON *.* TO '$MARIADB_USER'@'%' WITH GRANT OPTION"  echo "========================================================================"  echo "    可以使用以下命令连接 MariaDB Server:                                "  echo "    mysql -u$MARIADB_USER -p$MARIADB_PASS -h                      "  echo "                                                                        "  echo "    出于安全考虑,应该修改上述密码,root可以在本地无密码登陆建议设置密码  "  echo "========================================================================"}

########################################################## 显示数据库状态#########################################################function show_db_status() {  echo "Showing DB status..." && echo  mysql -uroot -e "status"}########################################################## 清理数据库,删除test库和无密码用户#########################################################function secure_and_tidy_db() {  echo "删除test库和无密码用户..."  mysql -uroot -e "DROP DATABASE IF EXISTS test"  mysql -uroot -e "DELETE FROM mysql.user where User = ''"  ########################################################## 设置root用户只能从本地登陆#########################################################  mysql -uroot -e "DELETE FROM mysql.user where User = 'root' AND Host NOT IN ('127.0.0.1','::1')"  mysql -uroot -e "DELETE FROM mysql.proxies_priv where User = 'root' AND Host NOT IN ('127.0.0.1','::1')"  echo "设置root用户只能从本地登陆完成!"}

[root@XSMM-WEB mk_mariadb]# cat run.sh

#!/bin/bashset -eset -usource ./mariadb-func.sh# 用户指定数据库用户名,不提供默认为mysql,并随机生成密码MARIADB_USER=${MARIADB_USER:="mysql"}MARIADB_PASS=${MARIADB_PASS:-$(pwgen -s 12 1)}# 指定其它必要环境变量 VOLUME_HOME="/var/lib/mysql"ERROR_LOG="$VOLUME_HOME/$HOSTNAME.err"MYSQLD_PID_FILE="$VOLUME_HOME/$HOSTNAME.pid"# Trap INT and TERM signals to do clean DB shutdowntrap terminate_db SIGINT SIGTERM#调用install_db函数install_db# 输出所有信息到终端tail -F $ERROR_LOG &  #将数据库启动到后台运行并记录PID/usr/bin/mysqld_safe & MYSQLD_SAFE_PID=$!wait_for_dbsecure_and_tidy_dbshow_db_statuscreate_mysql_user#不在终止这个脚本直到数据库进程mysqld_safe正常退出wait $MYSQLD_SAFE_PID

[root@XSMM-WEB mk_mariadb]# cat mariadb.repo

# MariaDB 10.1 CentOS repository list - created 2016-01-06 02:19 UTC# http://mariadb.org/mariadb/repositories/[mariadb]name = MariaDBbaseurl = http://yum.mariadb.org/10.1/centos7-amd64gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDBgpgcheck=1

#创建镜像

[root@XSMM mk_mariadb]# docker build -t mariadb10 .

#docker run --name mydb -d -p 3306:3306 -v /mydata/mysql/:/var/lib/mysql mariadb10

... ---> Running in 35b0398fbeb8 ---> d353c6e1e33bRemoving intermediate container 35b0398fbeb8Step 12 : CMD /run.sh ---> Running in 7248c5e14559 ---> 538b64e6987dRemoving intermediate container 7248c5e14559Successfully built 538b64e6987d

[root@XSMM]# docker p_w_picpaths

REPOSITORY                    TAG                 IMAGE ID            CREATED             SIZEmariadb10                     latest              538b64e6987d        4 minutes ago       1.111 GBcentos7-ssh                   latest              104c3f5a710c        7 days ago          504.1 MBcentos6                       latest              ba7961b610e2        7 days ago          194.6 MBdocker.io/tomcat              latest              3c90608ca58a        8 days ago          357.4 MBdocker.io/centos/redis        latest              a4b79297fc55        2 weeks ago         405.6 MBdocker.io/centos              latest              970633036444        5 weeks ago         196.7 MB

#从镜像生成一个mariadb容器

[root@XSMM]# docker run --name mydb -d -p 3306:3306 -v /mydata/mysql/:/var/lib/mysql mariadb10

7eb4b284406bfb497ee0addf8cda153ab91013f3f9fc3357d856c68ea8a6e658

#查看容器日志

[root@XSMM]# docker logs mydb

=> 使用已经存在数据目录文件.等待数据库启动...继续等待数据库启动完成...160910 01:07:05 mysqld_safe Logging to '/var/lib/mysql/7eb4b284406b.err'.160910 01:07:05 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql...2016-09-10  1:07:06 139756268353664 [Note] /usr/sbin/mysqld: ready for connections.Version: '10.1.17-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server2016-09-10  1:07:06 139756268353664 [Note] /usr/sbin/mysqld: ready for connections.删除test库和无密码用户...设置root用户只能从本地登陆完成!Showing DB status...Creating DB admin user...=> Creating MariaDB user 'mysql' with 'tMEpSbAy0lIK' password.========================================================================    可以使用以下命令连接 MariaDB Server:                                    mysql -umysql -ptMEpSbAy0lIK -h                                                                                                  出于安全考虑,应该修改上述密码,root可以在本地无密码登陆建议设置密码  ========================================================================

[root@XSMM]# mysql -umysql -ptMEpSbAy0lIK

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

#连接数据测试

[root@XSMM]# mysql --protocol=tcp -umysql -ptMEpSbAy0lIK

Welcome to the MariaDB monitor.  Commands end with ; or \g.Your MariaDB connection id is 10Server version: 10.1.17-MariaDB MariaDB ServerCopyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]> show databases;+--------------------+| Database        |+--------------------+| information_schema || mysql          || performance_schema |+--------------------+3 rows in set (0.01 sec)MariaDB [(none)]>