最近 123systems http://goo.gl/2Q0X2 又推出一年$10的便宜 VPS,128M内存,可以用来学习。在这样的vps 上放一个博客或做反向代理绰绰有余,买下后尝试配一个mysql+Tornado+Nginx 环境。
因为在小内存的VPS 上安装东西比较麻烦,动不动的内存超出导致安装失败或程序启动不了,在这里记下个人的配置过程,供初学者参考。
VPS配置
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Linux-128-Yearly
Guaranteed RAM 128MB
Burstable RAM 128MB
Disk Space 5GB
Bandwidth 250GB/Month
$10.00 USD/Annually
Instant Setup!
1vCPU
1 IP Address
SolusVM Control Panel
选择系统
建议选择debian 或ubuntu 这两个占用的资源少,我安装了debian-6.0-x86,python的版本是2.6.6。
卸载Apache2
卸载Apache2 的命令
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apt-get --purge remove apache2
apt-get --purge remove apache2.2-common
安装mysql
首先更新apt-get
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apt-get update
一行命令简单安装mysql
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apt-get install mysql-server
中间需要提示设置mysql root 用户密码,记住不要跟登录系统root 用户的密码相同,避免不必要的麻烦。
安装比较顺利,但在启动mysql 时失败!
需要修改mysql 配置文件才能启动,以下是我的一份配置。 配置文件: /etc/mysql/my.cnf
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[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 16K
max_allowed_packet = 1M
thread_stack = 64K
thread_cache_size = 4
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
max_connections = 16
table_cache = 8
thread_concurrency = 2
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 64K
#
# * Query Cache Configuration
#
query_cache_limit = 256k
query_cache_size = 4M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
#expire_logs_days = 2
#max_binlog_size = 10M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#important
#skip-innodb
innodb = OFF
default_storage_engine = MyISAM
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 8M
sort_buffer_size = 8M
[myisamchk]
key_buffer = 8M
sort_buffer_size = 8M
[mysqlhotcopy]
interactive-timeout
保存后尝试启动mysql
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service mysql restart
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mysqladmin -u root -p var | grep have_innodb
| have_innodb | DISABLED |
没出意外可以在top 里看到mysqld 进程。
debian 下安装Tornado
一行命令简单安装Tornado
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apt-get install python-tornado
debian 下安装Nginx
一行命令简单安装Nginx
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apt-get install nginx
测试
好了,就这样全部搞定。建立一个Tornado 测试脚本:tornado_test.py
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# -*- coding: utf-8 -*-
from tornado import httpserver
from tornado import ioloop
def handle_request(request):
message = "You requested %s\n" % request.uri
request.write("HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s" % (
len(message), message))
request.finish()
http_server = httpserver.HTTPServer(handle_request)
http_server.listen(8080)
ioloop.IOLoop.instance().start()
运行tornado_test.py
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python tornado_test.py
在浏览器输入你的VPS ip就可以看到:
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You requested /
再输入 你的vps ip/test 就可以看到:
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You requested /test
最后查看一下内存:
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free
把free 结果输出到一个文件
free > freefile
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total used free shared buffers cached
Mem: 131072 34128 99944 0 0 0
-/+ buffers/cache: 34128 99944
Swap: 0 0 0
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