docker-compose单机容器编排

Dockerfile:先配置好文件，然后build，镜像-------->容器。
docker-conpose 既可以基于dockerfile,也可以基于镜像，一键式拉起镜像和容器。
docker-compose核心就是yml文件，可以定义容器的一切。通过yml配置，直接运行容器。docker：单节点。docker没有统一对外提供服务的端口和配置。docker一般都是内部访问。无需使用https。
如果要对外以集群和分布式的方式提供统一访问的端口，k8s+ingress.

Docker Compose的解决方案

提供工具用于定义和运行多个docker容器应用；

使用yaml文件来配置应用服务(docker-compse.yml)；

可以通过一个简单的命令docker-compse up可以按照依赖关系启动所有服务；

可以通过一个简单的命令docker-compose down停止所有服务；

当一个服务需要的时候，可以很简单地通过--scale进行扩容;

Compose的特征 

更高的可移植性，Docker Compose仅需一个docker-compse up可以完成按照依赖关系启动所有服务，然后使用docker-compose down轻松将其拆解。帮助我们更轻松地部署复杂的应用程序；

单个主机上的多个隔离环境，Compose可以使用项目名称将环境彼此隔离，这带可以在一台计算机上运行同一环境的多个副本，它可以防止不同的项目和服务相互干扰；

Docker Compose配置常用字段:

docker-compose的常用命令：

build:构建服务
ps:列出由docker-compose编排出来的容器
up:创建和启动容器
top:显示容器的进程
logs:查看容器的输出日志
down:删除容器，网络，数据卷。
exec：在容器中执行命令。
stop/start/retart:停止，启动，重启容器。
scale: 指定启动的容器数量

docker-compose编译安装lnmp

安装docker-compose
#下载
curl -L https://github.com/docker/compose/releases/download/1.21.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
#安装
chmod +x /usr/local/bin/docker-compose
#查看版本
docker-compose --version

或者

cd /opt  拖入安装包

mv docker-compose-linux-x86_64 docker-compose
mv docker-compose  /usr/local/bin/
chmod 777 /usr/local/bin/docker-compose

[root@localhost opt]# mkdir lnmp
[root@localhost opt]# cd lnmp
[root@localhost lnmp]# mkdir nginx mysql php

nginx

[root@localhost lnmp]# cd nginx

安装包

[root@localhost nginx]# ls
nginx-1.22.0.tar.gz  wordpress-6.4.2-zh_CN.tar.gz

[root@localhost nginx]# vim nginx.conf

worker_processes 1;
events {
      worker_connections 1024;
}
http {
       include           mime.types;
       default_type    application/octet-stream;
       sendfile                on;
       keepalive_timeout    65;
       server {
                   listen      80;
                   server_name   localhost;
                   charset utf-8;
                    location / {
                            root    html;
                            index  index.html index.php;
 }
 error_page   500 502 503 504   /50x.html;
 location = /50x.html  {
        root    html;
}

location ~ \.php$ {
                 root           html;
                 fastcgi_pass   172.111.0.30:9000;
                 fastcgi_index  index.php;
                 fastcgi_param  SCRIPT_FILENAME  /usr/local/nginx/html$fastcgi_script_name;
                 include        fastcgi_params;  
              }  
}             
}

[root@localhost nginx]# vim Dockerfile
FROM centos:7
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make && useradd -M -s /sbin/nologin nginx
ADD nginx-1.22.0.tar.gz /usr/local/src/
WORKDIR /usr/local/src/nginx-1.22.0
RUN ./configure \
--prefix=/usr/local/nginx \
--user=nginx \
--group=nginx \
--with-http_stub_status_module && make -j 4 && make install
ENV PATH /usr/local/nginx/sbin:$PATH
COPY nginx.conf /usr/local/nginx/conf/
ADD wordpress-6.4.2-zh_CN.tar.gz /usr/local/nginx/html
RUN chmod 777 -R /usr/local/nginx/html/
EXPOSE 80
VOLUME ["/usr/local/nginx/html/"]
CMD ["/usr/local/nginx/sbin/nginx","-g","daemon off;"]

MySQL

[root@localhost nginx]# cd ..
[root@localhost lnmp]# cd mysql/
[root@localhost mysql]# rz -E
rz waiting to receive.
[root@localhost mysql]# ls
mysql-boost-5.7.20.tar.gz

[root@localhost mysql]# vim my.cnf

[client]
port = 3306
socket=/usr/local/mysql/mysql.sock

[mysqld]
user = mysql
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
port = 3306
character-set-server=utf8
pid-file = /usr/local/mysql/mysqld.pid
socket=/usr/local/mysql/mysql.sock
bind-address = 0.0.0.0
skip-name-resolve
max_connections=2048
default-storage-engine=INNODB
max_allowed_packet=16M
server-id = 1
general_log=ON
general_log_file=/usr/local/mysql/data/mysql_general.log

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES
 

[root@localhost mysql]# vim Dockerfile

FROM centos:7
MAINTAINER this is mysql image
RUN yum -y install ncurses ncurses-devel bison cmake pcre-devel zlib-devel gcc gcc-c++ make && useradd -M -s /sbin/nologin mysql
ADD mysql-boost-5.7.20.tar.gz /usr/local/src/
WORKDIR /usr/local/src/mysql-5.7.20/
RUN cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \
-DSYSCONFDIR=/etc \
-DSYSTEMD_PID_DIR=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DMYSQL_DATADIR=/usr/local/mysql/data \
-DWITH_BOOST=boost \
-DWITH_SYSTEMD=1 && make -j 4 && make install
COPY my.cnf /etc/my.cnf
EXPOSE 3306
RUN chown -R mysql:mysql /usr/local/mysql/ && chown mysql:mysql /etc/my.cnf
WORKDIR /usr/local/mysql/bin/
RUN ./mysqld \
--initialize-insecure \
--user=mysql \
--basedir=/usr/local/mysql \
--datadir=/usr/local/mysql/data && cp /usr/local/mysql/usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/;systemctl enable mysqld
ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
VOLUME ["/usr/local/mysql"]
ENTRYPOINT ["/usr/sbin/init"]

PHP

[root@localhost mysql]# cd ..
[root@localhost lnmp]# ls
mysql  nginx  php
[root@localhost lnmp]# cd php
[root@localhost php]# rz -E
rz waiting to receive.
[root@localhost php]# rz -E
rz waiting to receive.
[root@localhost php]# rz -E
rz waiting to receive.
[root@localhost php]# rz -E
rz waiting to receive.
[root@localhost php]# ls
php-7.1.10.tar.bz2  php-fpm.conf  php.ini  www.conf
[root@localhost php]# vim Dockerfile

FROM centos:7
MAINTAINER this is php image
RUN yum -y install gd \
libjpeg libjpeg-devel \
libpng libpng-devel \
freetype freetype-devel \
libxml2 libxml2-devel \
zlib zlib-devel \
curl curl-devel \
openssl openssl-devel \
gcc gcc-c++ make pcre-devel && useradd -M -s /sbin/nologin nginx
ADD php-7.1.10.tar.bz2 /usr/local/src/
WORKDIR /usr/local/src/php-7.1.10
RUN ./configure \
--prefix=/usr/local/php \
--with-mysql-sock=/usr/local/mysql/mysql.sock \
--with-mysqli \
--with-zlib \
--with-curl \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-openssl \
--enable-fpm \
--enable-mbstring \
--enable-xml \
--enable-session \
--enable-ftp \
--enable-pdo \
--enable-tokenizer \
--enable-zip && make -j 4 && make install
ENV PATH /usr/local/php/bin:/usr/local/php/sbin:$PATH
COPY php.ini /usr/local/php/lib/
COPY php-fpm.conf /usr/local/php/etc/
COPY www.conf /usr/local/php/etc/php-fpm.d/
EXPOSE 9000
ENTRYPOINT ["/usr/local/php/sbin/php-fpm","-F"]

docker.compose
 

cd ..

[root@localhost lnmp]# vim docker-compose.yml

version: '3'
services:
  nginx:
    hostname: nginx
    bulid:
      context: /opt/lnmp/nginx/
      dockerfile: Dockerfile
    ports:
      - 1314:80
    container_name: nginx_server
    networks:
      lnmp:
        ipv4_address: 172.111.0.10
    volumes:
      - "nginx-data:/usr/local/nginx/html"

  mysql:
    hostname: mysql
    build:
      context: /opt/lnmp/mysql/
      dockerfile: Dockerfile
    ports:
      - 3306:3306
    container_name: mysql_server
    networks:
      lnmp:
        ipv4_address: 172.111.0.20
    privileged: true
    volumes:
      - "mysql-data:/usr/local/mysql/"

 php:
    hostname: php
    build:
      context: /opt/lnmp/php/
      dockerfile: Dockerfile
    ports:
      - 9000:9000
    container_name: php_server
    networks:
      lnmp:
        ipv4_address: 172.111.0.30
    volumes:
      - "nginx-data:/usr/local/nginx/html/"
      - "mysql-data:/usr/local/mysql/"
 

networks:
  lnmp:
    driver: bridge
    ipam:
      config:
        - subnet: 172.111.0.0/16

volumes:
  nginx-data:
  mysql-data:

[root@localhost lnmp]# docker-compose -f docker-compose.yml up -d
yum安装出现错误 systemctl restart docker

出现 ✘ Network lnmp_lnmp  Error                                                                                                                                                                                 0.0s 
failed to create network lnmp_lnmp: Error response from daemon: Pool overlaps with other one on this address space

网卡冲突，更改docker-compose.yml的IPv4地址

[root@localhost lnmp]# docker exec -it mysql_server bash
[root@mysql bin]# mysql -u root -p
默认无密码

mysql> create database wordpress;
Query OK, 1 row affected (0.00 sec)
 
mysql> grant all privileges on wordpress.* to 'wordpress'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
 
mysql> grant all privileges on *.* to 'root'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
 
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)