A
nginx -V 2>&1 | grep -i upstr
configure arguments: --prefix=/opt/nginx --sbin-path=/opt/bin/nginx --conf-path=/opt/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/pid/nginx.pid --lock-path=/var/lock/nginx.lock --user=www-data --group=www-data --without-dso --without-procs --without-http-upstream-rbtree --without-poll_module --without-select_module --without-mail_pop3_module --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module --without-http_ssi_module --without-http_userid_module --without-http_trim_filter_module --without-http_split_clients_module --without-http_referer_module --without-http_uwsgi_module --without-http_scgi_module --without-http_fastcgi_module --without-http_memcached_module --without-http_limit_conn_module --without-http_empty_gif_module --without-http_browser_module --without-http_upstream_dynamic_module --without-http_upstream_hash_module --without-http_upstream_ip_hash_module --without-http_upstream_consistent_hash_module --without-http_user_agent_module --without-http_reqstat_module --with-cc-opt='-Wimplicit-fallthrough=0 -march=corei7 -mtune=corei7 -O3' --with-cpu-opt=amd64 --with-pcre --with-pcre=/opt/src/pcre-8.40 --with-pcre-opt='-march=corei7 -mtune=corei7' --with-pcre-jit --with-ipv6 --with-threads --with-file-aio --with-jemalloc --with-zlib-asm=pentium --with-libatomic --with-http_geoip_module --with-http_lua_module --with-http_v2_module --with-http_realip_module --add-module=/opt/build/modules/testcookie-nginx-module --add-module=/opt/build/modules/naxsi/naxsi_src --add-module=/opt/build/modules/nginx-module-vts
nginx: ngx_http_upstream_module (static)
nginx: ngx_http_upstream_check_module (static)
nginx: ngx_http_upstream_least_conn_module (static)
nginx: ngx_http_upstream_keepalive_module (static)
nginx: ngx_http_upstream_session_sticky_module (static)
