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Docker-Compose 容器集群的快速编排方法

2024-04-02 19:55

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目录

Docker-Compose 容器集群的快速编排

Docker-compose 简介

compose 部署

Docker Compose 环境安装

Docker Compose 是 Docker 的独立产品,因此需要安装 Docker 之后在单独安装 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 

#或者已下载过直接从宿主机传入到/opt目录下 
mv docker-compose /usr/local/bin/ 
#安装 
chmod +x /usr/local/bin/docker-compose 
#查看版本
docker-compose --version 

YAML 文件格式及编写注意事项

Docker Compose配置常用字段

字段描述
build指定Dockerfile文件名(要指定的Dockerfile文件需要在build标签的子级标签中用dockerfile标签指定)
dockerfile构建镜像上下文路径
context可以是dockerfile路径,或者是执行git 仓库的url地址
image指定镜像(已存在)
command执行命令,会覆盖容器启动后默认执行的命令(会覆盖Dockerfile的CMD指令)
container_name指定容器名称,由于容器名称是唯一的,如果指定自定义名称,则无法scale
deploy指定部署和运行服务相关配置,只能在Swarm模式使用
enviroment添加环境变量
networks加入网络,引用顶级networks下条目
networks-mode设置容器的网络模式,host、bridge.....
ports暴露容器端口,与-p 相同,但是端口不能低于60
volumes挂载一个宿主机目录或命令卷到容器,命名卷要在顶级volumes 定义卷名称
volumes_from从另一个服务或容器挂载卷,可选参数 :ro 和 :rw,仅版本'2'支持
hostname容器主机名
sysctls在容器内设置内核参数
links连接到另一个容器,- 服务名称[ :服务别名 ]
privilcgcd用来给容器root权限,注意是不安全的,truc|false(开启|关闭)
restart重启策略,定义是否重启容器; no(默认,不重启), always(总是重启), on-failure,(退出状态非0时重启), on-failure:3 ,在容器非正常退出时重启容器,最多重启3次, unless-stoped 在容器退出时总是重启容器,但是不考虑在Docker 守护进程启动时就已经停止了的容器
depends_on此标签用于解决容器的依赖,启动先后问题。如启动应用容器,需要先启动数据库容器php: depends_on: - apache - mysql

Docker compose 常用命令字段

字段描述
build重新构建服务
ps列出容器
up创建和启动容器
exec在容器里面执行命令
scale指定一个服务容器启动数量
top显示正在运行的容器进程
logs查看服务容器的输出
down删除容器、网络、数据卷和镜像
stop/start/restart停止/启动/重启服务

编写Docker Compose搭建lnmp论坛

部署前准备
vim /etc/sysctl.conf
net.ipv4.ip_forward = 1           #末行添加
sysctl -p                         #刷新配置
systemctl restart docker          #重启docker服务

配置nginx
编写dockerfile文件
FROM centos:7
MAINTAINER this is nginx images<gb>
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make
RUN useradd -M -s /sbin/nologin nginx
ADD nginx-1.12.0.tar.gz /opt/
WORKDIR /opt/nginx-1.12.0/
RUN ./configure \
--prefix=/usr/local/nginx \
--user=nginx \
--group=nginx \
--with-http_stub_status_module && make -j4 &&  make install
ENV PATH $PATH:/usr/local/nginx/sbin
ADD nginx.conf /usr/local/nginx/conf/
RUN chmod 777 -R /usr/local/nginx/html/
EXPOSE 80
EXPOSE 443
CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]

准备配置好nginx配置文件(添加支持php解析配置)

#user  nobody;
worker_processes  1;
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
#pid        logs/nginx.pid;
events {
    worker_connections  1024;
}
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;
#tcp_nopush     on;
#keepalive_timeout  0;
keepalive_timeout  65;
#gzip  on;
server {
    listen       80;
    server_name  localhost;
    charset utf-8;
    #access_log  logs/host.access.log  main;
    
        location / {
            root   html;
            index  index.html index.php;
        }
        #error_page  404              /404.html;
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
            root           html;
            fastcgi_pass   172.18.0.30:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /usr/local/nginx/html$fastcgi_script_name;
            include        fastcgi_params;
        }
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;
    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
}
    
折叠 

配置mysql

准备配置文件
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
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
编写dockerfile文件
FROM centos:7
MAINTAINER this is mysql image <lnmp>
RUN yum -y install gcc gcc-c++ ncurses ncurses-devel bison cmake 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
ADD 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" ]
CMD ["/usr/sbin/init"]

配置php

编写Dockerfile文件

FROM centos:7
MAINTAINER this is php image <lnmp>
RUN yum install -y 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
ADD php.ini /usr/local/php/lib/
ADD php-fpm.conf /usr/local/php/etc/
RUN rm -rf /usr/local/php/etc/php-fpm.d/www.conf.default
ADD www.conf /usr/local/php/etc/php-fpm.d/
EXPOSE 9000
CMD /usr/local/php/sbin/php-fpm -F

将所需的三个配置文件修改后写入

vim php-fpm.conf
[global]
pid = run/php-fpm.pid
include=/usr/local/php/etc/php-fpm.d/*.conf
vim php.ini
[PHP]
engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
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
display_errors = On
display_startup_errors = On
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
track_errors = On
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"
[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.cache_size = 2000
mysqli.default_port = 3306
mysqli.default_socket = /usr/local/mysql/mysql.sock
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = On
[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
[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.sid_length = 26
session.trans_sid_tags = "a=href,area=href,frame=src,form="
session.sid_bits_per_character = 5
[Assertion]
zend.assertions = 1
[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]

vim php-fpm.conf
[global]
pid = run/php-fpm.pid
include=/usr/local/php/etc/php-fpm.d/*.conf
折叠 
vim www.conf
[www]
user = nginx
group = nginx
listen = 172.18.0.30:9000
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3

编写docker-compose.yml文件

version: '2'
services:
  nginx:
    container_name: nginx
    build:
      context: ./nginx
      dockerfile: Dockerfile
    ports:
    - 80:80
    networks:
      lnmp:
        ipv4_address: 172.18.0.10

  mysql:
    container_name: mysql
    privileged: true
    build:
      context: ./mysql
      dockerfile: Dockerfile
    ports:

   - 3306:3306
     networks:
          lnmp:
     ipv4_address: 172.18.0.20
       php:
         depends_on:
     - nginx
     - mysql
       build:
       context: ./php
       dockerfile: Dockerfile
       container_name: php
       ports:
     - 9000:9000
       networks:
       lnmp:
       ipv4_address: 172.18.0.30
         volumes_from:
     - nginx
     - mysql
networks:
  lnmp:
    driver: bridge
    ipam:
      config:
      - subnet: 172.18.0.0/16
折叠 
#启动容器

docker-compose -f docker-compose.yml up -d
docker ps -a

到此这篇关于Docker-Compose 容器集群的快速编排的文章就介绍到这了,更多相关Docker Compose 容器集群内容请搜索编程界以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程界!

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