docker建立lnmp映象
阿新 • • 發佈：2018-12-26
docker是一個輕量級的虛擬化技術，而lnmp是一個強大、開源的web執行環境，這裡我們就演示用Docker來構建一個lnmp映象。
PS：為了保持輕量化和可伸縮，Docker鼓勵我們 “one process per container”，也就是不要在一個映象中整合太多的功能，我們這裡主要是為了學習研究，所以違背了這個準則，更好的方案是Nginx、Mysql、PHP各自建立映象，在單獨的容器裡執行，然後通過容器間的互聯實現通訊。
1、拉取官方的 centos:6.9 作為基礎映象，安裝好基礎環境
[[email protected] ~]# docker pull centos:6.9 6.9: Pulling from centos 055b9989266a: Pull complete f1070d829305: Pull complete e071bce628ba: Pull complete Digest: sha256:e7bdc458659b6e644ae85694f2baaf3727c06ad82186fca80f4e3a8e88907cc3 Status: Downloaded newer image for centos:6.9 [[email protected] ~]# [roo[email protected] ~]# docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE httpd 2.4.29 91199e851c7a 4 weeks ago 177.3 MB centos 6.9 e071bce628ba 4 weeks ago 194.7 MB ubuntu 14.04 b44ce450cb60 11 weeks ago 188 MB [[email protected] ~]# [[email protected] ~]# docker run -it centos:6.9 /bin/bash [[email protected] /]# ls bin dev etc home lib lib64 lost+found media mnt opt proc root sbin selinux srv sys tmp usr var [[email protected] ~]# [[email protected] /]# yum install -y epel-release .......
2、安裝PHP
[[email protected] /]# yum install -y php php-fpm php-mysql
.........
.........
[[email protected] /]# php -v
PHP 5.3.3 (cli) (built: Mar 22 2017 12:27:09)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
[[email protected] /]# php-fpm -v
PHP 5.3.3 (fpm-fcgi) (built: Mar 22 2017 12:28:05)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
[[email protected] /]#
[[email protected] /]# php -m
[PHP Modules]
bz2
calendar
Core
ctype
curl
date
ereg
exif
fileinfo
filter
ftp
gettext
gmp
hash
iconv
json
libxml
mysql
mysqli
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_sqlite
Phar
readline
Reflection
session
shmop
SimpleXML
sockets
SPL
sqlite3
standard
tokenizer
xml
zip
zlib
[Zend Modules]
3、安裝Nginx並配置PHP fastcgi
[[email protected] /]# yum install -y nginx
.......
配置Nginx以支援PHP，修改 /etc/nginx/conf.d/default.conf 如下：
#
# The default server
#
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
root /www; #change document_root to /www
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
}
#support php access
location ~ .*\.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
建立 /www 目錄，並且修改使用者和使用者組為 apache （php-fpm預設執行使用者和組為apache）
[[email protected] /]# mkdir /www
[[email protected] /]# chown apache:apache /www
[[email protected] /]# ll / | grep www
drwxr-xr-x. 2 apache apache 4096 Dec 4 08:21 www[[email protected] /]# yum install -y mysql mysql-server
......
......
[[email protected] /]# /etc/init.d/mysqld start
Starting mysqld: [ OK ]
[[email protected] /]# /usr/bin/mysqladmin -u root password '123456'
[[email protected] /]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]5、編寫啟動命令
[[email protected] /]# touch /bin/startup.sh
[[email protected] /]# chmod +x /bin/startup.sh
然後向startup.sh寫入如下內容：
#!/bin/sh
/etc/init.d/mysqld start
/etc/init.d/php-fpm start
/etc/init.d/nginx start
#dead loop
while ((1))
do
sleep 1h
done
6、清理不再需要的資料以縮減映象的尺寸，然後docker commit生成新映象
[[email protected] /]# yum remove -y epel-release
[[email protected] /]# yum clean all
Loaded plugins: fastestmirror, ovl
Cleaning repos: base extras updates
Cleaning up Everything
Cleaning up list of fastest mirrors
[[email protected] /]# exit
exit
[[email protected] ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
df040eea8088 centos:6.9 "/bin/bash" 2 hours ago Exited (0) 31 seconds ago sleepy_yalow
[[email protected] ~]# docker commit df0 centos:lnmp
efa371fe9b0ede828fe1999e7831491d1dd24cda26f1a27092a9565f4c781e06
[[email protected] ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos lnmp efa371fe9b0e 57 seconds ago 453.4 MB
httpd 2.4.29 91199e851c7a 4 weeks ago 177.3 MB
centos 6.9 e071bce628ba 4 weeks ago 194.7 MB
ubuntu 14.04 b44ce450cb60 11 weeks ago 188 MB
7、測試映象，啟動容器
[[email protected] ~]# docker run -d -p 8848:80 -v /www:/www centos:lnmp /bin/startup.sh
[[email protected] www]# cd /www
[[email protected] www]# echo "<?php echo time() . PHP_EOL;" > index.php
[[email protected] www]# cat index.php
<?php echo time() . PHP_EOL;
[[email protected] www]# curl '127.0.0.1:8848/index.php'
1512380042
再測試mysql是否正常
[[email protected] www]# touch /www/db.php
程式碼內容：
<?php
$db = new mysqli('127.0.0.1', 'root', '123456', 'mysql');
if ($db->connect_errno)
{
die("連線資料庫失敗". $db->connect_error);
}
echo "連線成功";
$db->close();
訪問 127.0.0.1:8848/db.php
[[email protected] www]# curl '127.0.0.1:8848/db.php'
連線成功[[email protected] www]#
That's it ^^