Docker Compose

　   Compose是什么

　　Compose是一个定义和管理多容器的工具，也是一种容器编排工具，前身是Pig，使用Python语言编写。使用Compose配置文件描述多个容器应用的构架，比如使用什么镜像，数据卷，网络，映射端口等；然后用一条命令管理所有服务，比如启动，停止，重启等 

　　系统为ubuntu18.04 切换root用户使用命令 sudo -i

　　安装（也可以github下载二进制包安装）

sudo apt-get install python-pip
sudo pip install docker-compose

　　查看版本

docker-compose --version

　　安装docker

apt install docker.io

　　查看版本

docker info

　　docker-compose读取文件夹下面的yml文件

　　编辑文件docker-compose.yml

version: '3'
services:
  web:
    build: .
    ports:
      - "8888:80"

　　version：定义版本有1,2,3版本

      services：定义服务

      web：服务名是web

     build：在本目录构建

     ports：端口映射8888映射容器的80端口

　　编辑Dockerfile

FROM centos:6
MAINTAINER liuyueming
RUN yum install -y httpd php php-gd php-mysql
RUN echo "<?php phpinfo()?>" > /var/www/html/index.php
CMD ["/usr/sbin/httpd","-D","FOREGROUND"]
EXPOSE 80

　　PS:参数D要加- 否则启动失败

　　文件目录如下

　　构建

docker-compose up

　　构建后会生成名为php_web的镜像（镜像默认命名规则为文件夹_服务名）

　　完毕查看

docker-compose ps
docker ps

　　web页面访问 http://ip:8888 

　　一键配置LNMP环境

　　配置文件如下

　　docker-compose.yml

version: '3'
services:
  nginx:
    hostname: nginx
    build:
      context: ./nginx
      dockerfile: Dockerfile
    ports:
      - 80:80
    links:
      - php:php-cgi
    volumes:
      - ./wwwroot:/usr/local/nginx/html

  php:
    hostname: php
    build: ./php
    links:
      - mysql:mysql-db
    volumes:
      - ./wwwroot:/usr/local/nginx/html

  mysql:
    hostname: mysql
    image: mysql:5.6
    ports:
      - 3306:3306
    volumes:
      - ./mysql/conf:/etc/mysql/conf.d
      - ./mysql/data:/var/lib/mysql
    # command: --character-set-server=utf8
    environment:
      MYSQL_ROOT_PASSWORD: 123456
      MYSQL_DATABASE: wordpress
      MYSQL_USER: user
      MYSQL_PASSWORD: user123

　　mysql/conf/my.cnf

[mysqld]
user=mysql
port=3306
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
pid-file=/var/run/mysqld/mysql.pid
log_error=/var/log/mysql/error.log
character_set_server = utf8
max_connections=3600

　　nginx/Dockerfile

FROM centos:6
MAINTAINER liuyueming
RUN yum install -y gcc gcc-c++ make openssl-devel pcre-devel
ADD nginx-1.12.1.tar.gz /tmp
RUN cd /tmp/nginx-1.12.1 && ./configure --prefix=/usr/local/nginx && make -j 2 && make install
RUN rm -f /usr/local/nginx/conf/nginx.conf 
COPY nginx.conf /usr/local/nginx/conf

EXPOSE 80
CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]

　　nginx/nginx.conf

user  root; 
worker_processes  auto; 

error_log  logs/error.log  info;

pid        logs/nginx.pid; 


events {
    use epoll; 
}

http {

    include       mime.types;
    default_type  application/octet-stream;

    log_format  main '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log logs/access.log main;
    sendfile        on;
    keepalive_timeout  65;

    server {
        listen 80;
        server_name localhost;
        root html;
        index index.html index.php;

        location ~ .php$ {
            root html;
            fastcgi_pass php-cgi:9000;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; 
            include fastcgi_params;
        }
    }
}

　　php/Dockerfile

FROM centos:6
MAINTAINER lizhenliang
RUN yum install -y gcc gcc-c++ gd-devel libxml2-devel libcurl-devel libjpeg-devel libpng-devel openssl-devel
ADD php-5.6.31.tar.gz /tmp/
RUN cd /tmp/php-5.6.31 && 
    ./configure --prefix=/usr/local/php 
    --with-config-file-path=/usr/local/php/etc 
    --with-mysql --with-mysqli 
    --with-openssl --with-zlib --with-curl --with-gd 
    --with-jpeg-dir --with-png-dir --with-iconv 
    --enable-fpm --enable-zip --enable-mbstring && 
    make -j 4 && make install && 
    cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf && 
    sed -i "s/127.0.0.1/0.0.0.0/" /usr/local/php/etc/php-fpm.conf && 
    cp ./sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm && 
    chmod +x /etc/init.d/php-fpm 
COPY php.ini /usr/local/php/etc

EXPOSE 9000
CMD /etc/init.d/php-fpm start && tail -F /var/log/messages

　　php/php.ini

[PHP]
engine = On
short_open_tag = Off
asp_tags = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = 17
disable_functions =
disable_classes =
zend.enable_gc = On
expose_php = On
max_execution_time = 30
max_input_time = 60
memory_limit = 128M
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
display_errors = Off
display_startup_errors = Off
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
track_errors = Off
html_errors = On
variables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On
post_max_size = 8M
auto_prepend_file =
auto_append_file =
default_mimetype = "text/html"
default_charset = "UTF-8"
doc_root =
user_dir =
enable_dl = Off
file_uploads = On
upload_max_filesize = 2M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
[CLI Server]
cli_server.color = On
[Date]
date.timezone = Asia/Shanghai
[filter]
[iconv]
[intl]
[sqlite3]
[Pcre]
[Pdo]
[Pdo_mysql]
pdo_mysql.cache_size = 2000
pdo_mysql.default_socket=
[Phar]
[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = On
[SQL]
sql.safe_mode = Off
[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1
[Interbase]
ibase.allow_persistent = 1
ibase.max_persistent = -1
ibase.max_links = -1
ibase.timestampformat = "%Y-%m-%d %H:%M:%S"
ibase.dateformat = "%Y-%m-%d"
ibase.timeformat = "%H:%M:%S"
[MySQL]
mysql.allow_local_infile = On
mysql.allow_persistent = On
mysql.cache_size = 2000
mysql.max_persistent = -1
mysql.max_links = -1
mysql.default_port =
mysql.default_socket =
mysql.default_host =
mysql.default_user =
mysql.default_password =
mysql.connect_timeout = 60
mysql.trace_mode = Off
[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.cache_size = 2000
mysqli.default_port = 3306
mysqli.default_socket =
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = Off
[OCI8]
[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0
[Sybase-CT]
sybct.allow_persistent = On
sybct.max_persistent = -1
sybct.max_links = -1
sybct.min_server_severity = 10
sybct.min_client_severity = 10
[bcmath]
bcmath.scale = 0
[browscap]
[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.serialize_handler = php
session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.hash_function = 0
session.hash_bits_per_character = 5
url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"
[MSSQL]
mssql.allow_persistent = On
mssql.max_persistent = -1
mssql.max_links = -1
mssql.min_error_severity = 10
mssql.min_message_severity = 10
mssql.compatibility_mode = Off
mssql.secure_connection = Off
[Assertion]
[COM]
[mbstring]
[gd]
[exif]
[Tidy]
tidy.clean_output = Off
[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5
[sysvshm]
[ldap]
ldap.max_links = -1
[mcrypt]
[dba]
[opcache]
[curl]
[openssl]

　　wwwroot/test.php

<?php phpinfo()?>

　　构建

docker-compose up

　　成功后查看

　　页面访问