[文章作者:张宴 本文版本:v1.2 最后修改:2008.01.02 转载请注明出处:http://blog.zyan.cc]
我曾经写过一篇文章──《初步试用Squid的替代产品──Varnish Cache网站加速器》,但当时仅仅是用着玩,没做深入研究。
今天写的这篇关于Varnish的文章,已经是一篇可以完全替代Squid做网站缓存加速器的详细解决方案了。网上关于Varnish的资料很少,中文资料更是微乎其微,希望本文能够吸引更多的人研究、使用Varnish。
在我看来,使用Varnish代替Squid的理由有三点:
1、Varnish采用了“Visual Page Cache”技术,在内存的利用上,Varnish比Squid具有优势,它避免了Squid频繁在内存、磁盘中交换文件,性能要比Squid高。
2、Varnish的稳定性还不错,我管理的一台图片服务器运行Varnish已经有一个月,没有发生过故障,而进行相同工作的Squid服务器就倒过几次。
3、通过Varnish管理端口,可以使用正则表达式快速、批量地清除部分缓存,这一点是Squid不能具备的。
下面来安装Varnish网站缓存加速器(Linux系统):
1、创建www用户和组,以及Varnish缓存文件存放目录(/var/vcache):
2、创建Varnish日志目录(/var/logs/):
3、编译安装varnish:
4、创建Varnish配置文件:
输入以下内容:
这里,我对这段配置文件解释一下:
(1)、Varnish通过反向代理请求后端IP为192.168.0.5,端口为80的web服务器;
(2)、Varnish允许localhost、127.0.0.1、192.168.0.***三个来源IP通过PURGE方法清除缓存;
(3)、Varnish对域名为blog.zyan.cc的请求进行处理,非blog.zyan.cc域名的请求则返回“Zhang Yan Cache Server”;
(4)、Varnish对HTTP协议中的GET、HEAD请求进行缓存,对POST请求透过,让其直接访问后端Web服务器。之所以这样配置,是因为POST请求一般是发送数据给服务器的,需要服务器接收、处理,所以不缓存;
(5)、Varnish对以.txt和.js结尾的URL缓存时间设置1小时,对其他的URL缓存时间设置为30天。
5、启动Varnish
6、启动varnishncsa用来将Varnish访问日志写入日志文件:
7、配置开机自动启动Varnish
在末尾增加以下内容:
8、优化Linux内核参数
在末尾增加以下内容:
再看看如何管理Varnish:
1、查看Varnish服务器连接数与命中率:
2、通过Varnish管理端口进行管理:
用help看看可以使用哪些Varnish命令:
3、通过Varnish管理端口,使用正则表达式批量清除缓存:
(1)、例:清除类似http://blog.zyan.cc/a/zhangyan.html的URL地址):
(2)、例:清除类似http://blog.zyan.cc/tech的URL地址:
(3)、例:清除所有缓存:
4、一个清除Squid缓存的PHP函数(清除Varnish缓存同样可以使用该函数,无需作任何修改,十分方便):
附1:Varnish官方网站:http://www.varnish-cache.org/
附2:2007年12月10日,我写了一个每天0点运行,按天切割Varnish日志,生成一个压缩文件,同时删除上个月旧日志的脚本(/var/logs/cutlog.sh):
/var/logs/cutlog.sh文件内容如下:
设置在每天00:00定时执行:
我曾经写过一篇文章──《初步试用Squid的替代产品──Varnish Cache网站加速器》,但当时仅仅是用着玩,没做深入研究。
今天写的这篇关于Varnish的文章,已经是一篇可以完全替代Squid做网站缓存加速器的详细解决方案了。网上关于Varnish的资料很少,中文资料更是微乎其微,希望本文能够吸引更多的人研究、使用Varnish。
在我看来,使用Varnish代替Squid的理由有三点:
1、Varnish采用了“Visual Page Cache”技术,在内存的利用上,Varnish比Squid具有优势,它避免了Squid频繁在内存、磁盘中交换文件,性能要比Squid高。
2、Varnish的稳定性还不错,我管理的一台图片服务器运行Varnish已经有一个月,没有发生过故障,而进行相同工作的Squid服务器就倒过几次。
3、通过Varnish管理端口,可以使用正则表达式快速、批量地清除部分缓存,这一点是Squid不能具备的。
下面来安装Varnish网站缓存加速器(Linux系统):
1、创建www用户和组,以及Varnish缓存文件存放目录(/var/vcache):
/usr/sbin/groupadd www -g 48
/usr/sbin/useradd -u 48 -g www www
mkdir -p /var/vcache
chmod +w /var/vcache
chown -R www:www /var/vcache
/usr/sbin/useradd -u 48 -g www www
mkdir -p /var/vcache
chmod +w /var/vcache
chown -R www:www /var/vcache
2、创建Varnish日志目录(/var/logs/):
mkdir -p /var/logs
chmod +w /var/logs
chown -R www:www /var/logs
chmod +w /var/logs
chown -R www:www /var/logs
3、编译安装varnish:
wget http://blog.zyan.cc/soft/linux/varnish/varnish-1.1.2.tar.gz
tar zxvf varnish-1.1.2.tar.gz
cd varnish-1.1.2
./configure --prefix=/usr/local/varnish
make && make install
tar zxvf varnish-1.1.2.tar.gz
cd varnish-1.1.2
./configure --prefix=/usr/local/varnish
make && make install
4、创建Varnish配置文件:
vi /usr/local/varnish/vcl.conf
输入以下内容:
引用
backend myblogserver {
set backend.host = "192.168.0.5";
set backend.port = "80";
}
acl purge {
"localhost";
"127.0.0.1";
"192.168.1.0"/24;
}
sub vcl_recv {
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
lookup;
}
if (req.http.host ~ "^blog.zyan.cc") {
set req.backend = myblogserver;
if (req.request != "GET" && req.request != "HEAD") {
pipe;
}
else {
lookup;
}
}
else {
error 404 "Zhang Yan Cache Server";
lookup;
}
}
sub vcl_hit {
if (req.request == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
sub vcl_miss {
if (req.request == "PURGE") {
error 404 "Not in cache.";
}
}
sub vcl_fetch {
if (req.request == "GET" && req.url ~ "\.(txt|js)$") {
set obj.ttl = 3600s;
}
else {
set obj.ttl = 30d;
}
}
set backend.host = "192.168.0.5";
set backend.port = "80";
}
acl purge {
"localhost";
"127.0.0.1";
"192.168.1.0"/24;
}
sub vcl_recv {
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
lookup;
}
if (req.http.host ~ "^blog.zyan.cc") {
set req.backend = myblogserver;
if (req.request != "GET" && req.request != "HEAD") {
pipe;
}
else {
lookup;
}
}
else {
error 404 "Zhang Yan Cache Server";
lookup;
}
}
sub vcl_hit {
if (req.request == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
sub vcl_miss {
if (req.request == "PURGE") {
error 404 "Not in cache.";
}
}
sub vcl_fetch {
if (req.request == "GET" && req.url ~ "\.(txt|js)$") {
set obj.ttl = 3600s;
}
else {
set obj.ttl = 30d;
}
}
这里,我对这段配置文件解释一下:
(1)、Varnish通过反向代理请求后端IP为192.168.0.5,端口为80的web服务器;
(2)、Varnish允许localhost、127.0.0.1、192.168.0.***三个来源IP通过PURGE方法清除缓存;
(3)、Varnish对域名为blog.zyan.cc的请求进行处理,非blog.zyan.cc域名的请求则返回“Zhang Yan Cache Server”;
(4)、Varnish对HTTP协议中的GET、HEAD请求进行缓存,对POST请求透过,让其直接访问后端Web服务器。之所以这样配置,是因为POST请求一般是发送数据给服务器的,需要服务器接收、处理,所以不缓存;
(5)、Varnish对以.txt和.js结尾的URL缓存时间设置1小时,对其他的URL缓存时间设置为30天。
5、启动Varnish
ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
6、启动varnishncsa用来将Varnish访问日志写入日志文件:
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/varnish.log &
7、配置开机自动启动Varnish
vi /etc/rc.local
在末尾增加以下内容:
引用
ulimit -SHn 51200
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &
/usr/local/varnish/sbin/varnishd -n /var/vcache -f /usr/local/varnish/vcl.conf -a 0.0.0.0:80 -s file,/var/vcache/varnish_cache.data,1G -g www -u www -w 30000,51200,10 -T 127.0.0.1:3500 -p client_http11=on
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &
8、优化Linux内核参数
vi /etc/sysctl.conf
在末尾增加以下内容:
引用
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 5000 65000
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 5000 65000
再看看如何管理Varnish:
1、查看Varnish服务器连接数与命中率:
/usr/local/varnish/bin/varnishstat
2、通过Varnish管理端口进行管理:
用help看看可以使用哪些Varnish命令:
/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 help
引用
Available commands:
ping [timestamp]
status
start
stop
stats
vcl.load
vcl.inline
vcl.use
vcl.discard
vcl.list
vcl.show
param.show [-l] []
param.set
help [command]
url.purge
dump.pool
ping [timestamp]
status
start
stop
stats
vcl.load
vcl.inline
vcl.use
vcl.discard
vcl.list
vcl.show
param.show [-l] []
param.set
help [command]
url.purge
dump.pool
3、通过Varnish管理端口,使用正则表达式批量清除缓存:
(1)、例:清除类似http://blog.zyan.cc/a/zhangyan.html的URL地址):
/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge /a/
(2)、例:清除类似http://blog.zyan.cc/tech的URL地址:
/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge w*$
(3)、例:清除所有缓存:
/usr/local/varnish/bin/varnishadm -T 127.0.0.1:3500 url.purge *$
4、一个清除Squid缓存的PHP函数(清除Varnish缓存同样可以使用该函数,无需作任何修改,十分方便):
附1:Varnish官方网站:http://www.varnish-cache.org/
附2:2007年12月10日,我写了一个每天0点运行,按天切割Varnish日志,生成一个压缩文件,同时删除上个月旧日志的脚本(/var/logs/cutlog.sh):
/var/logs/cutlog.sh文件内容如下:
引用
#!/bin/sh
# This file run at 00:00
date=$(date -d "yesterday" +"%Y-%m-%d")
pkill -9 varnishncsa
mv /var/logs/youvideo.log /var/logs/${date}.log
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &
mkdir -p /var/logs/youvideo/
gzip -c /var/logs/${date}.log > /var/logs/youvideo/${date}.log.gz
rm -f /var/logs/${date}.log
rm -f /var/logs/youvideo/$(date -d "-1 month" +"%Y-%m*").log.gz
# This file run at 00:00
date=$(date -d "yesterday" +"%Y-%m-%d")
pkill -9 varnishncsa
mv /var/logs/youvideo.log /var/logs/${date}.log
/usr/local/varnish/bin/varnishncsa -n /var/vcache -w /var/logs/youvideo.log &
mkdir -p /var/logs/youvideo/
gzip -c /var/logs/${date}.log > /var/logs/youvideo/${date}.log.gz
rm -f /var/logs/${date}.log
rm -f /var/logs/youvideo/$(date -d "-1 month" +"%Y-%m*").log.gz
设置在每天00:00定时执行:
/usr/bin/crontab -e
或者 vi /var/spool/cron/root
输入以下内容:引用
0 0 * * * /bin/sh /var/logs/cutlog.sh
Cryptocurrency Exchange Development Services
2019-5-30 15:53
The array of Oodles cryptocurrency exchange application development services encompasses various exchange business area like cryptocurrency exchange solution, decentralized exchanges, and asset exchange platform. We are a leading cryptocurrency exchange development company in India. We provide cryptocurrency exchange software solutions that meet secific requirements of investors and enable them with global exchange platfrom adoption https://blockchain.oodles.io/cryptocurrency-exchange-development/
chaucha
2019-5-30 16:03
excellent site
anniejamesja
2019-5-30 16:26
Thanks for posting such a great blog or article. It contains wonderful and helpful information. Keep up the good work![url ="http://go-mcafeecomsactivate.com"] mcafee.com/activate [/url]|[url ="http://www.hp-customer-service.net/hp-printer-assistant"] hp printer assistant [/url] | [url ="http://www.hp-customer-service.net/hp-printer-support-number"] Hp printer support number [/url]
office.com/setup
2019-5-31 02:34
<a href="https://setupoffize.com/">office.com/setup</a><a href="https://setupoffize.com/">office.com/setup</a><a href="https://setupoffize.com/">office.com/setup</a>
www.office.com/setup | office.com/setup
2019-5-31 13:22
office.com/setup, Office Setup with product key Visit office.com/setup and follow the on-screen instructions for Office 2019, Office 365, Step by Step.
www.office.com/setup | office.com/setup
2019-5-31 13:23
Let's Get Started gone Office Setup Online atwww.office.com/setup and Setup Your Office Subscription taking into consideration than Office.com/setup.
avawilliam
2019-5-31 16:52
Great job! I am really inspired from archive of post and big fan of outlook Support emailing service. You can establish the fine connection with our expert through dialing Outlook Support Phone Number +1-888-777-2832. Our site is open 24 hours in a day. Visit here:- http://www.microsoftoutlookoffice.com/ Read More:- Outlook Tech supportOutlook Technical Support phone numberOutlook helpOutlook support NumberOutlook tech supportoutlook customer serviceMicrosoft outlook supportMicrosoft 365 supportOffice 365 supportOffice 365 helphttps://microsoftoutlookoffice.tumblr.com/ https://customerserviceshelps.blogspot.com/ https://myspace.com/avaavawilliam https://www.pinterest.com/outlooksupport0093/ https://twitter.com/ServiceOutlook
Office 365 Support
2019-5-31 16:58
Thanks for sharing this useful information..You can take assistance from the expert of Office 365 support team. These experts are available 24/7 to provide you the best possible resolutions to get rid of your queries in an efficient manner.Office 365 helpMicrosoft 365 supportOutlook support
officecomsetupeu
2019-5-31 18:44
Microsoft Office suite is one of the best software developed by the company. You do not require any technical knowledge to download or install the product due to its user-friendly interface.
Outlookhelp
2019-6-1 15:10
At that moment, you need not waste your precious time in looking for the service. Just give a single ring at Outlook Support Phone Number and connect hassle-freely to the tech-specialists. <a href="https://www.microsoft-supportnumber.com/microsoft-outlook-support">outlook support phone number</a><a href="https://www.microsoft-supportnumber.com/microsoft-outlook-support">outlook support number</a><a href="https://www.microsoft-supportnumber.com/microsoft-outlook-support">outlook customer service phone number</a><a href="https://www.microsoft-supportnumber.com/microsoft-outlook-support">outlook tech support phone number</a>
office.com/setup
2019-6-1 16:23
Office setup expert has been working in the technology industry from the last 5 year. As a technical expert, he has written technical blogs, manuals, white papers, and reviews for many websites such as office.com/setup.http://officecom-officecom.comhttp://officecom-officecom.comOffice setup
office.com/setup
2019-6-1 16:25
office setup Over the appendix couple of quarterly outcomes, Microsoft has been reclassifying its privileged circumstances by its developing numbers in cloud-associated administrations. While Windows authorizing still records for big segments of what Microsoft puts in the bank, items and administrations, for example, Azure and Office 365 have been standing out as truly newsworthy starting late.http://office-office-com.com http://office-office-com.com
Jones Wilson
2019-6-1 18:22
我在你的博客中发现了很多有趣的东西,特别是它的讨论。从你对文章的大量评论来看,我想我并不是唯一一个在这里享受所有乐趣的人!保持良好的工作…www.office.com/setup
office.com/setup
2019-6-1 20:17
Microsoft Office Setup is the full package of Microsoft limitation programming which joins a mix of employments, affiliations, and host like Excel, PowerPoint, Word, OneNote, Publisher and Access. Close by the working frameworks, these jobs are Microsoft's key things that are everything seen as utilized programming on Earth. Microsoft Office Setup bundles all the very best programming which Microsoft moves on to the table.
office.com/setup
2019-6-1 20:18
Microsoft Office Setup is the full package of Microsoft limitation programming which joins a mix of employments, affiliations, and host like Excel, PowerPoint, Word, OneNote, Publisher and Access. Close by the working frameworks, these jobs are Microsoft's key things that are everything seen as utilized programming on Earth. Microsoft Office Setup bundles all the very best programming which Microsoft moves on to the table.
roy120rahul
2019-6-1 20:19
Microsoft Office Setup is the full package of Microsoft limitation programming which joins a mix of employments, affiliations, and host like Excel, PowerPoint, Word, OneNote, Publisher and Access. Close by the working frameworks, these jobs are Microsoft's key things that are everything seen as utilized programming on Earth. Microsoft Office Setup bundles all the very best programming which Microsoft moves on to the table.
roy120rahul
2019-6-1 20:23
Microsoft Office Setup is the full package of Microsoft limitation programming which joins a mix of employments, affiliations, and host like Excel, PowerPoint, Word, OneNote, Publisher and Access. Close by the working frameworks, these jobs are Microsoft's key things that are everything seen as utilized programming on Earth. Microsoft Office Setup bundles all the very best programming which Microsoft moves on to the table. office.com/setup | TomTom Update | Norton.com/setup | TomTom Update
مباراة
2019-6-2 23:14
thanks for this funny topicIt is a nice topic
رسائل
2019-6-2 23:17
thanks for this funny topicIt is a nice topic
office setup
2019-6-3 13:59
Let's Get Started gone Office Setup Online at www.office.com/setup and Setup Your Office Subscription taking into consideration than office.com/setup.
分页: 53/438 48 49 50 51 52 53 54 55 56 57