1、制做JAVA运行环境镜像
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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 java7:7u80
MAINTAINER yy
ENV TOMCAT_VERSION 7.0.70
ENV CATALINA_HOME /tomcat
ENV 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.gz
COPY apache-tomcat-${TOMCAT_VERSION}.tar.gz apache-tomcat-{TOMCAT_VERSION}.tar.gz
RUN 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:latest MAINTAINER yy ENV TZ "Asia/Shanghai" ENV TERM xterm COPY 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 *.sh VOLUME ["/var/lib/mysql"] EXPOSE 3306 CMD ["/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/bash
set -e
set -u
source ./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 shutdown
trap 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_db
secure_and_tidy_db
show_db_status
create_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 = MariaDB baseurl = http://yum.mariadb.org/10.1/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=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 ---> d353c6e1e33b Removing intermediate container 35b0398fbeb8 Step 12 : CMD /run.sh ---> Running in 7248c5e14559 ---> 538b64e6987d Removing intermediate container 7248c5e14559 Successfully built 538b64e6987d
[root@XSMM]# docker p_w_picpaths
REPOSITORY TAG IMAGE ID CREATED SIZE mariadb10 latest 538b64e6987d 4 minutes ago 1.111 GB centos7-ssh latest 104c3f5a710c 7 days ago 504.1 MB centos6 latest ba7961b610e2 7 days ago 194.6 MB docker.io/tomcat latest 3c90608ca58a 8 days ago 357.4 MB docker.io/centos/redis latest a4b79297fc55 2 weeks ago 405.6 MB docker.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 Server 2016-09-10 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 10 Server version: 10.1.17-MariaDB MariaDB Server Copyright (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)]>
