Docker 一步一步 搭建开源 CMDB平台 第二步： DockerFile 构建mariadb

Posted 2020-10-11 Linux Dream

整理了一下文档  今天来构建mariadb    

                                 

主机还是 centos  172.16.0.200 构建第二个images 

  直接shell.sh 完成 

 

#!/bin/bash
echo "----------------demo------------------"
#--------------------new--mysql--dockerfile----------
if [[ ! -e ./Dockerfile ]]; then
   cat  > ./Dockerfile <<\\EOF
FROM docker.io/centos
MAINTAINER Mrchen  <[e-mail]>

ENV DATA_DIR /var/lib/mysql

# Install Mariadb
RUN yum install -y mariadb mariadb-server 
RUN yum clean all

ADD mysqld_charset.cnf /etc/my.cnf.d/

COPY scripts /scripts
RUN chmod +x /scripts/start

EXPOSE 3306

VOLUME ["/var/lib/mysql"]
CMD ["/bin/bash"]
ENTRYPOINT ["/scripts/start"]
EOF
else
echo "Docker 已经存在"
fi
#---------------new-mysql.config--------------------
if [[ ! -e ./mysqld_charset.cnf ]]; then
cat > ./mysqld_charset.cnf <<\\EOF
[mysqld]
character_set_server=utf8
character_set_filesystem=utf8
collation-server=utf8_general_ci
init-connect=\'SET NAMES utf8\'
init_connect=\'SET collation_connection = utf8_general_ci\'
EOF
else
echo "mysqld.config 已存在！"
fi
#--------------new-start脚本---------------------
if [[ ! -d ./scripts  ]]; then
mkdir ./scripts && touch ./scripts/firstrun
cat > ./scripts/start <<\\EOF
#!/bin/bash

ROOT_USER=${ROOT_USER:-admin}
ROOT_PASS=${ROOT_PASS:-237356573}
#DB  user password
SQL_DB=${SQL_DB:-opsmanage}
DB_USER=${DB_USER:-chen}
DB_PASS=${DB_PASS:-237356573}

MARIADB_NEW=true



run_maria() {

        # First install mariadb
        if [[ ! -d ${DATA_DIR}/mysql ]]; then
            echo "===> MariaDB not install..."
             echo "===> Initializing maria database... "
           mysql_install_db --user=mysql --ldata=${DATA_DIR}
        echo "===> System databases initialized..."

           # Start mariadb
        /usr/bin/mysqld_safe --user mysql > /dev/null 2>&1 &
       
         echo "===> Waiting for MariaDB to start..."
                STA=1
        while [[ STA -ne 0 ]]; do
            printf "."
                        sleep 3
                        mysql -uroot -e "status" > /dev/null 2>&1
                        STA=$?
                done
        echo "===> Start OK..."

                # 1. Create a localhost-only admin account
        mysql -u root -e "CREATE USER \'$ROOT_USER\'@\'%\' IDENTIFIED BY \'$ROOT_PASS\'"
      mysql -u root -e "CREATE USER \'$ROOT_USER\'@\'localhost\' IDENTIFIED BY \'$ROOT_PASS\'"
       mysql -u root -e "CREATE USER \'$ROOT_USER\'@\'127.0.0.1\' IDENTIFIED BY \'$ROOT_PASS\'"
       mysql -u root -e "GRANT ALL PRIVILEGES ON *.* TO \'$DB_USER\'@\'%\' WITH GRANT OPTION"
                
                mysql -u root -e "CREATE DATABASE $SQL_DB"
    mysql -u root -e "grant all privileges on $SQL_DB.* TO \'$DB_USER\'@\'%\' identified by \'$DB_PASS\'"  
        echo "===> Create localhost completed..."

                # shutdown mariadb to wait for supervisor
                mysqladmin -u root shutdown

        else
        if [[ -e ${DATA_DIR}/mysql.sock ]]; then
            rm -f ${DATA_DIR}/mysql.sock
        fi

        MARIADB_NEW=false

                echo "===> Using an existing volume of MariaDB"
        fi
}


#
# When Startup Container script
#

if [[ -e /scripts/firstrun ]]; then
        # config mariadb
        run_maria
        rm /scripts/firstrun
else
        # Cleanup previous mariadb sockets
        if [[ -e ${DATA_DIR}/mysql.sock ]]; then
                rm -f ${DATA_DIR}/mysql.sock
        fi
fi

exec /usr/bin/mysqld_safe

EOF
else
echo "Dir scripts 已存在！"
fi
echo "----------mkdir----mysql-----DB----------------"
mkdir -p  /data/mysql
echo "------------------run_build--Dockerfile-----------------"
docker build -t python-mariadb:sql-v2  .
echo "------------------run_docker-Images-Mriadb---------------------------------"
docker   run  --name python-mariadb-v2   --privileged=true  -v /data/mysql:/var/lib/mysql   -p 3306:3306      -d  python-mariadb:sql-v2

 

 

说明： 该脚本会在当前目录下检测是否有dockerfile 文件 没完创建  后又生成mariadb 配置文件 并开始 build 得mariadb  images  run 启

重点在start.sh 该脚本内   会copy（scripts 目录）进容器内为 容器启动时运行脚本  初始化 mariadb 并创建 SQL 库   ’opsmanage‘     ‘DBname’    ‘userName’   ’passwordName‘  可以在run容器时  用   -e  参数 传进 环境变量 进行修改

并可在宿主机  ll   /data/mysql   下查看到 容器是否   有创建opsmanage库    和有没有运行成功!     运行时所生成得   mysql.sock 

查看一下运行状态：

 

 

连续测试一下：