Nginx installation
Yum info nginx View version
Yum install nginx - y installation
Nginx startup
Nginx - s stop
Nginx - s reload (reload takes effect after changing the configuration file)
Nginx - t Check syntax
performance optimization
1.worker_ processes number | auto
Number of worker processes; Usually, it should be the number of CPU cores
ps aux
2.worker_ cpu_ Affinity cpumask... (This option is not available in the default nginx. conf document and needs to be added manually)
worker_ cpu_ Affinity auto [apumask] improves cache hit ratio, which is conducive to faster CPU loading cache
Because the worker is bound to a fixed CPU core, it is more convenient for the worker to access the cache occupied by the CPU next time
Example: The server has a 4-core CPU, which is bound as:
00000001: CPU No. 0 First CPU
00000010: CPU 1 Second CPU
00000 100: CPU 2 The third CPU 0 is the starting CPU core, representing the first
00001000:3 CPU Fourth CPU
worker_ cpu_ Affinity 0001 0010 Bind two workers to two fixed CPU cores
If there are more CPUs, add the bindings in turn, such as three, four, five, and six
worker_ cpu_ affinity 00000001 00000010 00000100 00001000 00010000 00100000
Command to view the number of corresponding cpu cores
Ps axo pid, cmd, psr, nice | grep nginx View nginx process priority, pid process number, and cpu core number
Watch - n0.5 'ps axio pid, cmd, psr, nice | grep nginx' Grab the command executed above every 0.5 seconds and the results
- In the events option
worker_ connections 1024; The default upper limit of a work is 1024, which can be increased. RMB 20000
For worker_ connections 20000;
- Configure the format content to be filled in for a website. Edit the text location/etc/nginx/nginx Conf in the http module
option
server {
listen 80 default_ server; Website port default 80 Add default_ The server is set as the default page. If the default page is not added, it will be in order
listen [::]:80; The default value of ipv6 address is enough
server_ name _; Website domain name, fill in the format server_ name www.baidu.com;
root /usr/share/nginx/html; Website data storage directory
}
If there are multiple websites, continue to add the server option according to the above format
Or to/etc/nginx/conf. d/* Conf Edit a file with conf as the suffix to fill in the server content
Example:
Hide client query nginx version
Add a server in the http module_ tokens off;
