版本信息
nginx -v
Tengine version: Tengine/2.3.2
nginx version: nginx/1.17.3

nginx -m
Tengine version: Tengine/2.3.2
nginx version: nginx/1.17.3
nginx: loaded modules:
nginx: ngx_core_module (static)
nginx: ngx_errlog_module (static)
nginx: ngx_conf_module (static)
nginx: ngx_openssl_module (static)
nginx: ngx_regex_module (static)
nginx: ngx_events_module (static)
nginx: ngx_event_core_module (static)
nginx: ngx_epoll_module (static)
nginx: ngx_procs_module (static)
nginx: ngx_proc_core_module (static)
nginx: ngx_http_module (static)
nginx: ngx_http_core_module (static)
nginx: ngx_http_log_module (static)
nginx: ngx_http_upstream_module (static)
nginx: ngx_http_v2_module (static)
nginx: ngx_http_static_module (static)
nginx: ngx_http_gzip_static_module (static)
nginx: ngx_http_autoindex_module (static)
nginx: ngx_http_index_module (static)
nginx: ngx_http_mirror_module (static)
nginx: ngx_http_try_files_module (static)
nginx: ngx_http_auth_request_module (static)
nginx: ngx_http_auth_basic_module (static)
nginx: ngx_http_access_module (static)
nginx: ngx_http_limit_conn_module (static)
nginx: ngx_http_limit_req_module (static)
nginx: ngx_http_realip_module (static)
nginx: ngx_http_geo_module (static)
nginx: ngx_http_map_module (static)
nginx: ngx_http_split_clients_module (static)
nginx: ngx_http_referer_module (static)
nginx: ngx_http_rewrite_module (static)
nginx: ngx_http_ssl_module (static)
nginx: ngx_http_proxy_module (static)
nginx: ngx_http_fastcgi_module (static)
nginx: ngx_http_uwsgi_module (static)
nginx: ngx_http_scgi_module (static)
nginx: ngx_http_grpc_module (static)
nginx: ngx_http_memcached_module (static)
nginx: ngx_http_empty_gif_module (static)
nginx: ngx_http_browser_module (static)
nginx: ngx_http_upstream_hash_module (static)
nginx: ngx_http_upstream_ip_hash_module (static)
nginx: ngx_http_upstream_least_conn_module (static)
nginx: ngx_http_upstream_random_module (static)
nginx: ngx_http_upstream_keepalive_module (static)
nginx: ngx_http_upstream_zone_module (static)
nginx: ngx_http_stub_status_module (static)
nginx: ngx_http_cache_purge_module (static)
nginx: ngx_http_write_filter_module (static)
nginx: ngx_http_header_filter_module (static)
nginx: ngx_http_chunked_filter_module (static)
nginx: ngx_http_v2_filter_module (static)
nginx: ngx_http_range_header_filter_module (static)
nginx: ngx_http_gzip_filter_module (static)
nginx: ngx_http_postpone_filter_module (static)
nginx: ngx_http_ssi_filter_module (static)
nginx: ngx_http_charset_filter_module (static)
nginx: ngx_http_sub_filter_module (static)
nginx: ngx_http_gunzip_filter_module (static)
nginx: ngx_http_userid_filter_module (static)
nginx: ngx_http_headers_filter_module (static)
nginx: ngx_http_echo_module (static)
nginx: ngx_http_concat_module (static)
nginx: ngx_http_copy_filter_module (static)
nginx: ngx_http_range_body_filter_module (static)
nginx: ngx_http_not_modified_filter_module (static)
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

配置
upstream go_backend {
#这个报错，下面被注解的那行是OK的
consistent_hash $request_uri;
#hash $request_uri consistent;
keepalive 99999;
keepalive_requests 99999999;
keepalive_timeout 65s;
server 10.35.27.241:80;
server 10.35.27.241:81;
}

输出日志：
nginx -s stop
nginx: [emerg] unknown directive "consistent_hash" in /usr/local/nginx/conf/nginx.conf:170

问题反馈：
我是默认安装的，我看文档写的 也是会默认安装，为啥我这个不行呢？
http://tengine.taobao.org/document_cn/http_upstream_consistent_hash_cn.html