1. DM7镜像制作

DM7镜像制作，主要分为3个步骤：

  • 添加安装包
  • dminit执行初始化
  • 启动dmserver

1. 添加安装包

DM7镜像制作时，只需要dm7安装包解压缩后的bin目录文件。

文件 dmdbms.tar.gz 内的目录结果如下：

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--dmdbms
    |-- bin
	     |-- ...
	|-- data
	|-- log

data和log为空目录

Dockerfile

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FROM base-alpine:latest AS build
LABEL maintainer="zxb@dameng.com"
ADD ./dmdbms.tar.gz /opt
COPY entrypoint.sh switchDmLog.sh /opt/

FROM base-alpine:latest
ENV DM7_INSTANCE_NAME instance \
    BUFFER 100 \
    MAX_BUFFER 100
COPY --from=build /opt /opt
RUN apk add --no-cache tini && \
    rm -rf /var/cache/apk/* && \
    mv /opt/entrypoint.sh /bin/entrypoint.sh && \
    mv /opt/switchDmLog.sh /bin/switchDmLog.sh
EXPOSE 5236
VOLUME [ "/opt/dmdbms/data" ]
CMD ["/bin/entrypoint.sh"]
ENTRYPOINT ["/sbin/tini", "--"]

2. 执行初始化

entrypoint.sh

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#!/bin/bash
INSTANCE_NAME=${DM7_INSTANCE_NAME}
DEM_FLAG=${DM7_DEM_FLAG}
ADMIN_PWD=${SYSDBA_PWD}
INSTANCE_BUFFER=${BUFFER}
INSTANCE_MAX_BUFFER=${MAX_BUFFER}
export LANG=en_US.UTF-8

if [ ! -d "/opt/dmdbms/data/DAMENG" ]; then
   cd /opt/dmdbms/bin
   ./dminit PATH=/opt/dmdbms/data PAGE_SIZE=16 CASE_SENSITIVE='N' UNICODE_FLAG=1 SYSDBA_PWD=${ADMIN_PWD}
   echo "Init DM7 success!"
   sed -i.bak "s/MAX_SESSIONS                    =  100/MAX_SESSIONS                    =  1000/g; \
               s/KEEP                            =  8/KEEP                            =  64/g; \
               s/SORT_BUF_SIZE                   =  2/SORT_BUF_SIZE                   =  50/g; \
               s/BUFFER                          =  100/BUFFER                          =  ${INSTANCE_BUFFER}/g; \
               s/MAX_BUFFER                      =  100/MAX_BUFFER                      =  ${INSTANCE_MAX_BUFFER}/g" \
               /opt/dmdbms/data/DAMENG/dm.ini;
   echo "Finished config dm.ini."
fi

current_year_month=`date +%Y%m`
DM_LOG=dm_DMSERVER_${current_year_month}.log
ln -s /opt/dmdbms/log/${DM_LOG} /opt/dmdbms/log/dm_DMSERVER.log
echo "Finished soft link DM7 current ${DM_LOG} to dm_DMSERVER.log"
echo "5 0 1 * * root /bin/switchDmLog.sh" > /opt/switchDmLogCron
/usr/bin/crontab /opt/switchDmLogCron
echo "Start Cron Service"
/usr/sbin/crond

echo "Start DM7 Service"
cd /opt/dmdbms/bin
exec ./dmserver /opt/dmdbms/data/DAMENG/dm.ini

上述脚本中，当数据目录不存在时，会执行 dminit 程序完成数据库初始化工作。

switchDmLog.sh

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#!/bin/bash
current_year_month=`date +%Y%m`
DM_LOG=dm_DMSERVER_${current_year_month}.log
rm -rf /opt/dmdbms/log/dm_DMSERVER.log
ln -s /opt/dmdbms/log/${DM_LOG} /opt/dmdbms/log/dm_DMSERVER.log
echo "Finished switch DM7 current ${DM_LOG} to dm_DMSERVER.log"

switchDmLog.sh脚本主要用于完成软链接的切换，其实用途不大，可以删除掉。

3. 启动服务

在 entryponit.sh 最后一行，前台方式启动了 dmserver

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exec ./dmserver /opt/dmdbms/data/DAMENG/dm.ini

因为 DM7 是数据库系统，所以文件盘建议是通过挂载的方式将宿主机的目录挂载到容器中，避免容器重新创建后数据丢失。

2. MySQL镜像

MySQL 镜像直接采用的官方镜像，该镜像主要需要设置2个环境变量：

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MYSQL_ROOT_PASSWORD=xxx
MYSQL_ROOT_HOST=%

docker-compose：

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version: '2.4'
services:  
  mysql:
    image: mysql:5
    command: --default-authentication-plugin=mysql_native_password
    environment:
      - MYSQL_ROOT_PASSWORD=xxxxxx
      - MYSQL_ROOT_HOST=%
    volumes:
      - /data/mysql:/var/lib/mysql
    ports:
      - 3306:3306

3. vsftpd镜像

使用容器搭建 ftp 时，不要采用默认的主动模式，应采用被动模式。

主动模式和被动模式的区别（需梯子访问）

Dockerfile

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FROM base-alpine:latest

RUN apk add --no-cache vsftpd \    
  && adduser -h /home/admin -s /bin/false -D admin

COPY vsftpd.conf /etc/vsftpd/
COPY docker-entrypoint.sh /
VOLUME /home/admin

EXPOSE 20 21 10090-10100

CMD /docker-entrypoint.sh

vsftpd.conf

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anonymous_enable=YES
local_enable=YES
write_enable=YES
local_umask=002
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_file=/var/log/xferlog
xferlog_std_format=NO
log_ftp_protocol=YES
use_localtime=YES
max_clients=5000
max_per_ip=1000
accept_timeout=120
connect_timeout=120
data_connection_timeout=600
pam_service_name=vsftpd
dual_log_enable=YES
seccomp_sandbox=NO
vsftpd_log_file=/var/log/vsftpd.log
allow_writeable_chroot=YES
passwd_chroot_enable=YES
chroot_local_user=YES
pasv_enable=YES
pasv_max_port=10100
pasv_min_port=10090

docker-entrypoint.sh

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#!/bin/sh
if [ -z ${PASSWORD} ]; then
  PASSWORD=$(< /dev/urandom tr -dc A-Za-z0-9 | head -c${1:-8};echo;)
  echo "Generated password for user 'admin': ${PASSWORD}"
fi
# set ftp user password
echo "admin:${PASSWORD}" |/usr/sbin/chpasswd
chown admin:admin /home/admin/ -R

# set ip
echo -e "\npasv_address=${HOST_IP}" >> /etc/vsftpd/vsftpd.conf

if [ -z $1 ]; then
  /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
else
  $@
fi

docker-compose

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version: '2.4'
services:  
  vsftpd:
    build: ./vsftpd
    image: vsftpd:latest
    ports:
      - "20:20"
      - "21:21"
      - "10090-10100:10090-10100"
    environment:
      PASSWORD: "xxxxxx"
      HOST_IP: "192.168.52.10"
    volumes:
      - /data/ftp:/home/admin