Posted innginx
Nginx Reverse Proxying Multiple Domains Using map Module
Instead of writing multiple server blocks repeatedly in configuration, we can simplified configuration using nginx map module ie: source: taken from nginx mailinglist
Nginx As Reverse Proxy IPV6 to IPV4 Website
Like many other reverse proxying mechanism, the configuration is quite simple. All we need is just website that's lived in ipv4, and Nginx with IPv6 capabled network.
Posted innginx
nginx mod_strip module and textarea
I was asking to Evan Miller if his nginx mod_strip module can honour <textarea> tag. i got quick responses from him.
previous mod_strip module eliminates newline characters within <textarea> list contents. here’s examples with latest mod_strip. I’ve tested it using postfixadmin.
configuration:
server {
listen xxx.xxx.xxx.xxx:80;
server_name www.example.com;
strip on;
access_log /var/log/nginx/www.example.com-access.log main;
location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://127.0.0.1:80;
}
}
Posted innginx
Nginx Configuration SyntaxHighlighting
Feel bored with black and white display nginx configuration? Evan Miller create Syntax highlighting for the world's best text editor, vim. Here's the tutorial http://www.vim.org/scripts/script.php?script_id=1886, or this how i've made it work on mine. First change to .vim directory on home directory, then create directory called syntax. example: [bash] # cd .vim…
Nginx + Vlc Streaming Cheap Webcam
I was experimenting with cheap webcam, vlc on my windows xp workstation. Playing directly using vlc, performance was adequate. but when it came accross network/WAN, delay started increasing between 4-5 seconds(video/audio). i suspect, transcoding are behind these streaming lag. i don’t know what is the best tuning. but here’s the final setting.
start /high vlc.exe --logo-file avatar.png dshow:// :dshow-vdev="VideoCAM Eye" :dshow-adev="SigmaTel Audio" :dshow-caching="0" :sout=#transcode{vcodec=h264{keyint=15,vbv-maxrate=160,vbv-bufsize=160},acodec=mp3,deinterlace,samplerate=44100,sfilter=logo}:std{access=http{mime=video/x-flv},mux=ffmpeg{mux=flv},dst=0.0.0.0:8088/stream.flv,sdp=sap://,name="Webcam 3G"} --ttl 12
Build Nginx RPM With ngx_cache_purge module
I’m not going have much words to say, here we go..
first download nginx source rpm from this excellent contributor/packager and install the source
$ wget http://centos.alt.ru/pub/nginx/0.9/RHEL/SRPMS/nginx-0.9.5-1.el5.src.rpm $ rpm -Uvh nginx-0.9.5-1.el5.src.rpm
Change to /path/rpm/SOURCE and download ngx_cache_purge
$ cd `rpm --eval '%{_sourcedir}'`
$ wget http://labs.frickle.com/files/ngx_cache_purge-1.2.tar.gz
Now we need to modified nginx.spec a bit, so it will include ngx_cache_purge module when compiled
$ cd `rpm --eval '%{_specdir}' `
$ vi nginx.spec
Add ngx_cache_source-1.2.tar.gz module to source list as Source20
Source11: nginx_mod_h264_streaming-2.2.7.tar.gz Source20: ngx_cache_purge-1.2.tar.gz
In %prep section add this line %setup -T -D -a 20
%setup -T -D -a 11 %setup -T -D -a 20 %setup -T -D -a 21
In %build section add this line –add-module=%{_builddir}/nginx-%{version}/ngx_cache_purge-1.2 \
...
--add-module=%{_builddir}/nginx-%{version}/nginx_upload_module-2.2.0 \
--add-module=%{_builddir}/nginx-%{version}/ngx_cache_purge-1.2 \
--add-module=%{_builddir}/nginx-%{version}/nginx_mod_h264_streaming-2.2.7
...
Posted innginx
Nginx worker_cpu_affinity
By Default, without setting worker_cpu_affinity directive in nginx.conf, linux kernel will spread all nginx’s worker all over CPUs.
I have 4 logical CPUs on my server, which is CPU0 – CPU3
Cpu0 : 2.9%us, 0.9%sy, 0.0%ni, 88.9%id, 7.2%wa, 0.0%hi, 0.2%si, 0.0%st Cpu1 : 1.8%us, 0.6%sy, 0.0%ni, 95.3%id, 2.2%wa, 0.0%hi, 0.1%si, 0.0%st Cpu2 : 2.4%us, 0.7%sy, 0.0%ni, 94.3%id, 2.5%wa, 0.0%hi, 0.1%si, 0.0%st Cpu3 : 1.9%us, 0.7%sy, 0.0%ni, 96.7%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st
Using default setting, nginx’s worker always bind to those 4 logical CPUs. which is has “f” bitmask
# taskset -p 12348 pid 25748's current affinity mask: f # taskset -p 12349 pid 25749's current affinity mask: f # taskset -p 12351 pid 25751's current affinity mask: f # taskset -p 12352 pid 25752's current affinity mask: f # taskset -p 12353 pid 25753's current affinity mask: f
CPU affinity is represented as a bitmask (given in hexadecimal), with the lowest order bit corresponding to the first logical CPU and the highest order bit corresponding to the last logical CPU.
Examples:
How To Make php-fpm Listen On Both Tcp And Unix Socket?
I need to make php-fpm listeing on both tcp/unix socket, and this is how it done.
(this was not pretty workarround i guess, but it work 😀 )
first download php rpm source
$ wget http://centos.alt.ru/pub/php-fpm/5.3.3-2/SRPMS/php-5.3.3-2.el5.src.rpm
Compile and install
$ rpmbuild --rebuild php-5.3.3-2.el5.src.rpm $ sudo rpm -Uvh /path/to/RPMS/php-*
Configuring the default php-fpm for using tcp socket
Edit www.conf
$ sudo vi /etc/php-fpm.d/www.conf
Find line containing
listen = 127.0.0.1:9000
We can make it listening to port what ever we desire, ie 9001 etc
Start php-fpm first instance
$ sudo service php-fpm start
Configuring php-fpm for using unix socket
$ sudo cp /etc/php-fpm.conf /etc/php-fpm2.conf $ sudo cp -rp /etc/php-fpm.d /etc/php-fpm2.d
Edit /etc/php-fpm2.conf
include=/etc/php-fpm2.d/*.conf pid = /var/run/php-fpm/php-fpm2.pid error_log = /var/log/php-fpm/error2.log
Edit /etc/php-fpm2.d/www.conf
listen = /tmp/php-fpm.sock php_admin_value[error_log] = /var/log/php-fpm/www-error2.log
Posted innginx
Nginx, Subdirs Without Trailing Slash
If you set [xml] location /mail/ { fastcgi_pass localhost:8888; ... } [/xml] and request "/mail" then nginx will return external redirect to "/mail/". If you do not want the redirect, then [xml] location = /mail { fastcgi_pass localhost:8888; fastcgi_param SCRIPT_FILENAME $document_root/index.php; fastcgi_param SCRIPT_NAME /index.php; root /var/www; } location /mail/ {…
Nginx, Geo IP and Distributed Server
When you have many networks, which are located far apart and in different location. You want users to access the server closest to their network. town1 users when accessing the main server, the server will diredirect town1.example.com, and the town2's users will be redirected to town2.example.com. [xml] http { geo…