docker 静默安装mysql

debconf-set-selections命令

1.功能作用

在debconf database中插入默认值

2.位置

/usr/bin/debconf-set-selections


3.格式用法

debconf-set-selections [-vcu] [file]

4.主要参数

1 2 3

-v,--verbose    显示运行过程信息   -c,--checkonly  只检查输入文件的格式   -u,--unseen      在预置参数时，不设置'seen'标识

5.应用实例

1、命令行输入设置参数
sudo debconf-set-selections <<< 'mysql-server-5.5 mysql-server/root_password password your_password'
sudo debconf-set-selections <<< 'mysql-server-5.5 mysql-server/root_password_again password your_password'
sudo apt-get -y install mysql-server


2、先输入文件，再一次性添入设置参数
echo "mysql-server-5.5 mysql-server/root_password password $MYSQL_ROOT_PASS" > /tmp/mysql.preseed
echo "mysql-server-5.5 mysql-server/root_password_again password $MYSQL_ROOT_PASS" >> /tmp/mysql.preseed
cat /tmp/mysql.preseed | sudo debconf-set-selections
rm /tmp/mysql.preseed
sudo apt-get install -y mysql-server


3、使用echo方式输入设置参数
echo 'mysql-server-5.5 mysql-server/root_password password your_password' | sudo debconf-set-selections
echo 'mysql-server-5.5 mysql-server/root_password_again password your_password' | sudo debconf-set-selections
sudo apt-get install -y mysql-server

4、直接从文件中读取设置参数
sudo debconf-set-selections mysql-passwd
sudo apt-get install -y mysql-server

5.docker 中静默安装mysql

ENV DEBIAN_FRONTEND  #设置静默安装，即非交互

RUN apt-get update && apt-get install debconf-utils -y
RUN echo "mysql-server mysql-server/root_password password root" | debconf-set-selections
RUN echo "mysql-server mysql-server/root_password_again password root" | debconf-set-selections
RUN apt-get install -y mysql-server

或者

ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update && \
apt-get -yq install mysql-server-5.6 pwgen && \
rm -rf /var/lib/apt/lists/*