Docker学习之Dockerfile
制作ubunt-ssh-supervisor镜像
a、Dockerfile 文件
FROM ubuntu
MAINTAINER salman ([email protected])
RUN DEBIAN_FRONTEND=noninteractive apt-get update \
&& apt-get install -y openssh-server sudo \
&& mkdir -p /var/run/sshd \
&&useradd salman \
&& echo "salman:123456" | chpasswd \
&& echo "salman ALL=(ALL) ALL" >> /etc/sudoers \
#### 改变用户shell ###########
&& usermod -s /bin/bash salman \
&& apt-get install -y supervisor \
&& mkdir -p /var/log/supervisor
###### add supervisord config file #########
ADD supervisord.conf /etc/supervisor/conf.d/
EXPOSE 22
CMD [ "/usr/bin/supervisord" ]
b、supervisord.conf 文件内容
[supervisord]
nodaemon=true
[program:sshd]
command=/usr/sbin/sshd -D
c、创建镜像
cd /mnt/ubuntu-ssh-supervisor ##一个镜像创建一个目录
docker build -t="ubuntu-ssh-supervisor" . ##注意不要漏掉最后面的"."
docker images ##查看本地镜像
docker run -t -d --name "my1" -p 55:22 ubuntu-ssh-supervisor ##启动容器
制作tomcat镜像
创建一个新的目录放Dockerfile文件,jdk和tomcat从官网下载，打包成tar包，ADD不支持解压ZIP格式
root@ubuntu:/mnt/tomcat# ll
total 190604
drwxr-xr-x 2 root root 4096 Nov 8 16:29 ./
drwxr-xr-x 6 root root 4096 Nov 8 10:49 ../
-rw-r--r-- 1 root root 254 Nov 7 17:47 Dockerfile
-rw-r--r-- 1 root root 185516936 Nov 7 17:19 jdk.tar.gz
-rw-r--r-- 1 root root 263 Nov 7 17:26 supervisord.conf
-rw-r--r-- 1 root root 9638216 Nov 7 17:19 tomcat.tar.gz
a 、 Dockerfile 文件
FROM ubuntu-ssh-supervisor
MAINTAINER salman ([email protected])
ENV DEBIAN_FRONTEND noninteractive
ADD tomcat.tar.gz /opt/
ADD jdk.tar.gz /opt/
ADD supervisord.conf /etc/supervisor/conf.d/
EXPOSE 22 8080
CMD [ "/usr/bin/supervisord" ]
b、supervisord.conf 文件
[supervisord]
nodaemon=true
[program:sshd]
command=/usr/sbin/sshd -D
[program:tomcat]
command=/opt/tomcat/bin/catalina.sh run
####指定jdk环境变量####
environment=JAVA_HOME="/opt/jdk/",JAVA_BIN="/opt/jdk/bin"
directory=/opt/tomcat
autostart = true
autorestart= true
redirect_stderr= true
c、创建镜像
cd /mnt/tomcat
docker build -t="tomcat" . ##注意不要漏掉最后面的"."
docker images ##查看本地镜像
docker run -t -d --name "my1" -p 22:22 -p 8080:8080 tomcat ##启动容器
制作mysql 镜像
准备：mysql的编译安装之后的完整包。mysql的安装目录/opt/mysql
a、Dockerfile 文件
FROM ubuntu-ssh-supervisor
MAINTAINER salman ([email protected])
######add mysql ########
ADD mysql.tar.gz /opt/
ADD supervisord.conf /etc/supervisor/conf.d/
EXPOSE 22 3306
CMD [ "/usr/bin/supervisord" ]
b、supervisor文件
[supervisord]
nodaemon=true
[program:sshd]
command=/usr/sbin/sshd -D
[program:mysql]
####mysqld_safe安全模式默认是不允许root用户启动，加--user=root强制使用root ###
### 为了节省安装步骤，没有加mysql用户
command=/opt/mysql/bin/mysqld_safe --defaults-file=/opt/mysql/my.cnf --user=root
autostart=true
startretries=5
autorestart=true
user=root
c 、创建镜像
docker build -t="salman/mysql" .
docker启动mysql 把数据文件挂载到本地
##解压 mysql.tar.gz 将 mysql/data 目录拷贝到/data/mysql/data下
###将本地目录挂载到容器下，需要保证本地目录和容器目录内容一致。不一致容器中看到的data目录为空，数据库无法启动
docker run -t -d --name "mysql" -p 3306:3306 -v /data/mysql/data:/opt/mysql/data salman/mysql
###登录容器添加远程权限
root@ubuntu:/mnt/mysql# docker exec -it mysqlTest /bin/bash
root@66a9c2fb0545:/opt# /opt/mysql/bin/mysql
mysql> use mysql
Database changed
mysql> update user set Password=PASSWORD('cwits123') where User='root' ;
Query OK, 4 rows affected (0.00 sec)
Rows matched: 5 Changed: 4 Warnings: 0
mysql> grant all privileges on *.* to root@"%" identified by "cwits123" with grant option;
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
###验证远程登录
Hbase3:~ # mysql -uroot -p -h192.168.1.142
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.42-debug lq-edition
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
附录：
ubuntu 安装mysql
（1）安装编译源码需要的包
sudo apt-get install make cmake gcc g++ bison libncurses5-dev build-essential
（2）下载并解压缩
mysql-5.6.42.tar.gz
tar -zxvf mysql-5.6.42.tar.gz
cd mysql-5.6.42
（3）编译安装
编译配置：
cmake . -DCMAKE_INSTALL_PREFIX=/opt/mysql -DMYSQL_DATADIR=/opt/mysql/data -DSYSCONFDIR=/opt/mysql -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 -DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 -DWITHOUT_FEDERATED_STORAGE_ENGINE=1 -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=all -DENABLED_LOCAL_INFILE=1 -DWITH_READLINE=1 -DMYSQL_UNIX_ADDR=/opt/mysql/mysql.sock -DMYSQL_TCP_PORT=3306 -DMYSQL_USER=mysql -DCOMPILATION_COMMENT="lq-edition" -DENABLE_DTRACE=0 -DOPTIMIZER_TRACE=1 -DWITH_DEBUG=1
编译安装：
make && make install
配置MySQL
（1）新建运行Mysql的用户和组
groupadd mysql
useradd -g mysql mysql
（2）设置Mysql安装目录的权限
chown -R mysql:mysql /opt/mysql
（3）建立配置文件
cp /opt/mysql/support-files/my-default.cnf /opt/mysql/my.cnf
修改配置文件：
cat /etc/my.cnf
[client]
port = 3306
socket = /opt/data/mysql.sock
[mysqld]
port = 3306
socket = /opt/data/mysql.sock
basedir = /opt
datadir = /opt/data
（4）初始化数据库
/opt/mysql/scripts/mysql_install_db --user=mysql --basedir=/opt/mysql --datadir=/opt/mysql/data/
（5）启动mysql服务
启动
/opt/mysql/bin/mysqld_safe --defaults-file=/opt/mysql/my.cnf --user=mysql &
关闭
/usr/bin/mysqladmin -u root -p shutdown
（7）修改root密码（因为默认密码为空）
/opt/mysql/bin/mysql -u root -p
mysql> UPDATE user SET Password=PASSWORD('你想要的密码') where USER='root';
mysql> FLUSH PRIVILEGES;
（8）授权root账户远程登录
/opt/mysql/bin/mysql
mysql> grant ALL PRIVILEGES ON *.* to root@"%" identified by "root" WITH GRANT OPTION;
mysql> FLUSH PRIVILEGES;