【docker】基于Dockerfile构建monogdb服务镜像

erwewwe

① 查看内容，包括写好的Dockerfile和若干脚本等。
从GitHub Dockerpool社区账户下载Mongodb镜像项目：
git clone https://github.com/DockerPool/Mongodb.git 并修改文件
[iyunv@docker1 Mongodb]# ls
Dockerfile  mongodb-3.2.repo  mongodb-linux-x86_64-rhel70-3.6.0.tgz  run.sh  set_mongodb_password.sh

其中Dockerfile内容为：
[iyunv@docker1 Mongodb]# vi Dockerfile
#设置从我们之前创建的sshd镜像继承
FROM sshd:centos

MAINTAINER waitfish from dockerpool.com

ADD mongodb-3.2.repo /etc/yum.repos.d/

RUN \
  yum update -y && \
  yum install -y mongodb-org && \         #这里不推荐使用yum安装monodb，实在下载速度太慢
  yum clean all

# 创建mongodb存放数据文件的文件夹
RUN mkdir -p /data/db
VOLUME /data/db

ENV AUTH yes

# Add run scripts 添加脚本
ADD run.sh /run.sh
ADD set_mongodb_password.sh /set_mongodb_password.sh
RUN chmod 755 ./*.sh

EXPOSE 27017
EXPOSE 28017

CMD ["/run.sh"]
————————————————————————————————————————————————
[iyunv@docker1 Mongodb]# cat run.sh
#!/bin/bash
if [ ! -f /.mongodb_password_set ]; then
        /set_mongodb_password.sh
fi

if [ "$AUTH" == "yes" ]; then
    export mongodb='/usr/bin/mongod --nojournal --auth --httpinterface --rest'
else
    export mongodb='/usr/bin/mongod --nojournal --httpinterface --rest'
fi

if [ ! -f /data/db/mongod.lock ]; then
    eval $mongodb
else
    export mongodb=$mongodb' --dbpath /data/db'
    rm /data/db/mongod.lock
    mongod --dbpath /data/db --repair && eval $mongodb
fi
——————————————————————————————————————————————————
[iyunv@docker1 Mongodb]# cat set_mongodb_password.sh
#!/bin/bash

if [ -f /.mongodb_password_set ]; then
        echo "MongoDB password already set!"
        exit 0
fi

/usr/bin/mongod --smallfiles --nojournal &

PASS=${MONGODB_PASS:-$(pwgen -s 12 1)}
_word=$( [ ${MONGODB_PASS} ] && echo "preset" || echo "random" )

RET=1
while [[ RET -ne 0 ]]; do
    echo "=> Waiting for confirmation of MongoDB service startup"
    sleep 5
    mongo admin --eval "help" >/dev/null 2>&1
    RET=$?
done

echo "=> Creating an admin user with a ${_word} password in MongoDB"
mongo admin --eval "db.addUser({user: 'admin', pwd: '$PASS', roles: [ 'userAdminAnyDatabase', 'dbAdminAnyDatabase' ]});"
mongo admin --eval "db.shutdownServer();"

echo "=> Done!"
touch /.mongodb_password_set

echo "========================================================================"
echo "You can now connect to this MongoDB server using:"
echo ""
echo "    mongo admin -u admin -p $PASS --host <host> --port <port>"
echo ""
echo "Please remember to change the above password as soon as possible!"
echo "========================================================================"