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Http2.0 已经发布很久了，其优点前篇文章已经介绍过了 HTTP2- 0 原理解析，今天我们来配置 Nginx 使其支持 Http2.0
安装前必读：
Nginx1.10.0 以上版本才支持 Http2.0，如果使用的是 Tengine，版本需要大于 2.2.1
Http2.0 只支持 Https 协议的网站，且 openssl 版本需要高于 1.0.2
一、查看当前 Nginx 安装了哪些模块（如果事先没有安装 Nginx，请忽略此步骤）
> /usr/sbin/nginx -V
nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC)
built with OpenSSL 1.0.2k-fips 26 Jan 2017
TLS SNI support enabled
configure arguments: –prefix=/usr/share/nginx –sbin-path=/usr/sbin/nginx –modules-path=/usr/lib64/nginx/modules –conf-path=/etc/nginx/nginx.conf –error-log-path=/var/log/nginx/error.log –http-log-path=/var/log/nginx/access.log –http-client-body-temp-path=/var/lib/nginx/tmp/client_body –http-proxy-temp-path=/var/lib/nginx/tmp/proxy –http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi –http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi –http-scgi-temp-path=/var/lib/nginx/tmp/scgi –pid-path=/run/nginx.pid –lock-path=/run/lock/subsys/nginx –user=nginx –group=nginx –with-file-aio –with-ipv6 –with-http_ssl_module –with-http_v2_module –with-http_realip_module –with-http_addition_module –with-http_xslt_module=dynamic –with-http_image_filter_module=dynamic –with-http_geoip_module=dynamic –with-http_sub_module –with-http_dav_module –with-http_flv_module –with-http_mp4_module –with-http_gunzip_module –with-http_gzip_static_module –with-http_random_index_module –with-http_secure_link_module –with-http_degradation_module –with-http_slice_module –with-http_stub_status_module –with-http_perl_module=dynamic –with-mail=dynamic –with-mail_ssl_module –with-pcre –with-pcre-jit –with-stream=dynamic –with-stream_ssl_module –with-google_perftools_module –with-debug –with-cc-opt=’-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong –param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic’ –with-ld-opt=’-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-E’
可以看到 http2.0 模块 –with-http_v2_module 已经存在了，方便演示就重新执行一遍
二、安装，升级这里以最新版的 Tengine 为例
> wget http://tengine.taobao.org/download/tengine-2.2.3.tar.gz
> cd tengine-2.2.3
> ./configure –prefix=/usr/share/nginx –with-http_stub_status_module –with-http_ssl_module –with-http_v2_module –with-http_gzip_static_module –with-ipv6 –with-http_sub_module
# 执行 make 编译
> make
# 如果是首次安装 Nginx，执行 make install；如果是升级，执行 make upgrade
> make upgrade
# 完成后查看已经安装的模块，可以发现已经有 http2（–with-http_v2_module）模块了
> nginx -V
三、配置 NginxNginx 配置 http2 很简单，只需要在 listen 的端口后新增 http2 标识即可，如下
server {
listen 443 ssl http2;
server_name hostname.com;
ssl_certificate cert/214547145790616.pem;
ssl_certificate_key cert/214547145790616.key;
location / {
proxy_pass http://localhost:12345;
}
}
四、检查 http2 是否生效打开 chrome 控制台，在 Name 一栏右键把 Protocol 勾选上
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