Ubuntu 20.04 安装 nginx 1.21.6

卸载旧版本

视情况是否需要执行此步骤：没有安装过，或者旧版本配置无需保留

sudo apt-get --purge remove nginx-common 

sudo apt-get --purge remove nginx*

sudo apt-get autoremove

添加源

echo "deb http://nginx.org/packages/mainline/ubuntu `lsb_release -cs` nginx" \
    | sudo tee /etc/apt/sources.list.d/nginx.list
curl -o /tmp/nginx_signing.key https://nginx.org/keys/nginx_signing.key
sudo mv /tmp/nginx_signing.key /etc/apt/trusted.gpg.d/nginx_signing.asc

sudo apt update
sudo apt install nginx

安装后的配置和原来的会有点不同，不再使用 sites-enabled目录，而是使用 conf.d

使用了 nginx用户，而原来的用户是 www-data

user  nginx;

查看版本

# nginx -V
nginx version: nginx/1.21.6
built by gcc 9.3.0 (Ubuntu 9.3.0-10ubuntu2) 
built with OpenSSL 1.1.1f  31 Mar 2020
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx-1.21.6/debian/debuild-base/nginx-1.21.6=. -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie'