在Azure VM上使用Nginx和Varnish在ERR_EMPTY_RESPONSE上发出

介绍 – 场景

我对Linux服务器configuration和Microsoft Azure云服务相对较新。

我有一个虚拟机，在Ubuntu 16.04之上，有一个由Nginx，Varnish，PHP7-FPM，MariaDB，FAIL2BAN组成的堆栈。

WordPress的多站点安装。 据我所知，在Nginx和Varnish .conf文件以及Wordpress安装中，所有configuration都是正确的。

港口80和443都打开。 主domaind和联网站点域都parsing为虚拟机的IP。

• 我怎样才能读旧漆日志？
• 作为reverse_proxy在nginx中从HTTPSredirect到HTTP
• 有关清漆文件存储引擎的问题
• 清漆：根据url使用多个后端
• nginx + varnish + apache在VirtualHost Apache中的不同IP地址

所有这些都是使用debops-wordpress（Ansible项目的扩展）部署的。

问题

问题是主站点工作正常，但所有networking站点导致ERR_EMPTY_RESPONSE错误。 据我所知，这些请求没有生成日志。 例如， varnishlog会在我请求主域时报告所有预期的清漆活动（批）。 当我请求联网的网站域时，它根本不会产生任何活动。 我从这里得出结论，这个请求甚至从来没有通过清漆。

日志文件

当我为联网网站（Wordpress多站点）发出http请求时，会将基本条目写入光油访问日志。 （见下文）。 但Nginx日志中没有条目。 并且在Varnish或Nginx错误日志中没有条目。

::ffff:122.57.253.24 - - [17/Jul/2017:01:58:35 +0000] "GET /favicon.ico HTTP/1.1" 204 0 "http://www.sewalunafoundation.nz/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36"

所以域请求至less要通过堆栈，但是会以空的响应错误中止。

我在想，也许我忽视了Azure方面的一些东西，那就是阻止任何联网站点域的请求实际到达服务器堆栈。 虽然我不太确定，但由于必要的端点（80和443）是开放的，并且对于主要域名工作良好，而且现在我看到次级（WP联网）域名至less足以创build清漆一个日志条目的事实，这是我认为这是不可能的networking相关。

组态

漆

 server { listen [::]:80 default_server ipv6only=off; server_name www.primarydomain.nz; server_name primarydomain.nz; server_name www.2nd-domain.org.uk; server_name 2nd-domain.org.uk; server_name www.3rd-domain.org.za; server_name 3rd-domain.org.za; server_name 4th-domain.ca; server_name www.4th-domain.ca; include snippets/acme-challenge.conf; keepalive_timeout 60; access_log /var/log/nginx/varnish.www.primarydomain.nz_access.log; error_log /var/log/nginx/varnish.www.primarydomain.nz_error.log; client_max_body_size 32M; if ($host != $server_name) { return 444; } location = /nginx_status { stub_status on; access_log on; allow 127.0.0.1/32; allow ::1/128; allow 10.0.0.8; deny all; } include /etc/nginx/sites-default.d/*.conf; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_set_header X-Forwarded-Port 80; proxy_pass http://varnish; } } 

Nginx的

 server { listen 8080 default_server ipv6only=off; server_name www.primarydomain.nz; server_name primarydomain.nz; server_name www.2nd-domain.org.uk; server_name 2nd-domain.org.uk; server_name www.3rd-domain.org.za; server_name 3rd-domain.org.za; server_name 4th-domain.ca; server_name www.4th-domain.ca; root /var/www/www.primarydomain.nz; keepalive_timeout 60; access_log /var/log/nginx/www.primarydomain.nz_access.log; error_log /var/log/nginx/www.primarydomain.nz_error.log; index index.html index.htm index.php; client_max_body_size 32M; gzip_comp_level 5; gzip_min_length 256; gzip_proxied any; gzip_vary on; gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rdf+xml application/rss+xml application/schema+json application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-javascript application/x-web-app-manifest+json application/xhtml+xml application/xml font/eot font/opentype image/bmp image/svg+xml image/vnd.microsoft.icon image/x-icon text/cache-manifest text/css text/javascript text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy text/xml; rewrite /wp-admin$ $scheme://$host$uri/ permanent; # Disallow access to hidden files and directories location ~ /\. { return 404; } location = /favicon.ico { try_files /favicon.ico =204; access_log off; log_not_found off; } location = /nginx_status { stub_status on; access_log off; allow 127.0.0.1/32; allow ::1/128; allow 10.0.0.8; deny all; } include /etc/nginx/sites-default.d/*.conf; location ~ /(\.|wp-config.php|readme.html|license.txt|wp-cli.local.yml|wp-cli.yml) { return 404; } location ~* ^.+\.(css|js|ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ { access_log off; expires max; add_header Cache-Control "public"; } location = /robots.txt { access_log off; log_not_found off; try_files /robots.txt /index.php; } location / { try_files $uri $uri/ /index.php?$args; } location ~ ^(?!.+\.php/)(?<script_name>.+\.php)$ { limit_except GET HEAD POST { deny all; } try_files $script_name =404; include fastcgi.conf; set $php_https off; if ($http_x_forwarded_proto = "https") { set $php_https on; } fastcgi_param HTTPS $php_https; fastcgi_next_upstream error timeout invalid_header http_500; # Mitigate HTTPOXY attacks (https://httpoxy.org/) fastcgi_param HTTP_PROXY ""; fastcgi_index index.php; fastcgi_pass php-wordpress; } location ~ ^(?<script_name>.+\.php)(?<path_info>/.*)$ { limit_except GET HEAD POST { deny all; } try_files $script_name =404; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$script_name; fastcgi_param PATH_INFO $path_info; #fastcgi_param PATH_TRANSLATED $document_root$path_info; set $php_https off; if ($http_x_forwarded_proto = "https") { set $php_https on; } fastcgi_param HTTPS $php_https; fastcgi_next_upstream error timeout invalid_header http_500; # Mitigate HTTPOXY attacks (https://httpoxy.org/) fastcgi_param HTTP_PROXY ""; fastcgi_index index.php; fastcgi_pass php-wordpress; } } 

/etc/default/varnish

（删除了所有评论）

 START=yes NFILES=131072 MEMLOCK=82000 DAEMON_OPTS="-a :6081 \ -T localhost:6082 \ -f /etc/varnish/default.vcl \ -S /etc/varnish/secret \ -s malloc,256m" 

/etc/varnish/default.vcl内容

（删除了所有评论）

 vcl 4.0; import std; import directors; backend wordpress { .host = "127.0.0.1"; .port = "8080"; .max_connections = 300; .first_byte_timeout = 300s; .connect_timeout = 5s; .between_bytes_timeout = 2s; } acl purge { "10.0.0.8"; "127.0.0.1"; "::1"; } sub vcl_init { new vdir = directors.round_robin(); vdir.add_backend(wordpress); } sub vcl_recv { set req.backend_hint = vdir.backend(); # send all traffic to the vdir director set req.http.Host = regsub(req.http.Host, ":[0-9]+", ""); unset req.http.proxy; if (req.method == "PURGE") { if (!std.ip(req.http.X-Real-IP, "0.0.0.0") ~ purge) { return (synth(405, "This IP is not allowed to send PURGE requests.")); } return (purge); } if (req.method != "GET" && req.method != "HEAD" && req.method != "PUT" && req.method != "POST" && req.method != "TRACE" && req.method != "OPTIONS" && req.method != "PATCH" && req.method != "DELETE") { /* Non-RFC2616 or CONNECT which is weird. */ return (pipe); } if (req.http.Upgrade ~ "(?i)websocket") { return (pipe); } if (req.method != "GET" && req.method != "HEAD") { return (pass); } if (req.url ~ "(\?|&)(utm_(campaign|medium|source|term)|gclid|cx|ie|cof|siteurl)=") { set req.url = regsuball(req.url, "&(utm_(campaign|medium|source|term)|gclid|cx|ie|cof|siteurl)=([A-z0-9_\-\.%25]+)", ""); set req.url = regsuball(req.url, "\?(utm_(campaign|medium|source|term)|gclid|cx|ie|cof|siteurl)=([A-z0-9_\-\.%25]+)", "?"); set req.url = regsub(req.url, "\?&", "?"); set req.url = regsub(req.url, "\?$", ""); } if (req.url ~ "\#") { set req.url = regsub(req.url, "\#.*$", ""); } if (req.url ~ "\?$") { set req.url = regsub(req.url, "\?$", ""); } set req.http.Cookie = regsuball(req.http.Cookie, "wordpress-settings-[0-9]+?=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "wordpress-settings-time-[0-9]+?=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "wordpress_test_cookie=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "has_js=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "__utm.=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "_ga=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "_gat=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "utmctr=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "utmcmd.=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "utmccn.=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "__gads=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "__qc.=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "__atuv.=[^;]+(; )?", ""); set req.http.Cookie = regsuball(req.http.Cookie, "^;\s*", ""); if (req.http.cookie ~ "^\s*$") { unset req.http.cookie; } if (req.http.Cache-Control ~ "(?i)no-cache") { if (! (req.http.Via || req.http.User-Agent ~ "(?i)bot" || req.http.X-Purge)) { return(purge); # Couple this with restart in vcl_purge and X-Purge header to avoid loops } } if (req.url ~ "^[^?]*\.(7z|avi|bz2|flac|flv|gz|mka|mkv|mov|mp3|mp4|mpeg|mpg|ogg|ogm|opus|rar|tar|tgz|tbz|txz|wav|webm|xz|zip)(\?.*)?$") { unset req.http.Cookie; return (hash); } if (req.url ~ "^[^?]*\.(7z|avi|bmp|bz2|css|csv|doc|docx|eot|flac|flv|gif|gz|ico|jpeg|jpg|js|less|mka|mkv|mov|mp3|mp4|mpeg|mpg|odt|otf|ogg|ogm|opus|pdf|png|ppt|pptx|rar|rtf|svg|svgz|swf|tar|tbz|tgz|ttf|txt|txz|wav|webm|webp|woff|woff2|xls|xlsx|xml|xz|zip)(\?.*)?$") { unset req.http.Cookie; return (hash); } if (req.http.Cookie ~ "wordpress_" || req.http.Cookie ~ "comment_") { return (pass); } if (req.url ~ "wp-(admin|cron|login)" || req.url ~ "preview=true" || req.url ~ "xmlrpc.php") { return (pass); } set req.http.Surrogate-Capability = "key=ESI/1.0"; if (req.http.Authorization) { return (pass); } return (hash); } sub vcl_pipe { if (req.http.upgrade) { set bereq.http.upgrade = req.http.upgrade; } return (pipe); } sub vcl_pass { } sub vcl_hash { hash_data(req.url); if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); } if (req.http.Cookie) { hash_data(req.http.Cookie); } } sub vcl_hit { if (obj.ttl >= 0s) { return (deliver); } if (!std.healthy(req.backend_hint) && (obj.ttl + obj.grace > 0s)) { return (deliver); } else { return (fetch); } if (std.healthy(req.backend_hint)) { if (obj.ttl + 10s > 0s) { return (deliver); } else { return(fetch); } } else { if (obj.ttl + obj.grace > 0s) { return (deliver); } else { return (fetch); } } return (fetch); # Dead code, keep as a safeguard } sub vcl_miss { return (fetch); } sub vcl_backend_response { if (beresp.http.Surrogate-Control ~ "ESI/1.0") { unset beresp.http.Surrogate-Control; set beresp.do_esi = true; } if (bereq.url ~ "^[^?]*\.(bmp|bz2|css|doc|eot|flv|gif|gz|ico|jpeg|jpg|js|less|mp[34]|pdf|png|rar|rtf|swf|tar|tgz|txt|wav|woff|xml|zip|webm)(\?.*)?$") { unset beresp.http.set-cookie; } if (bereq.url ~ "^[^?]*\.(mp[34]|rar|tar|tgz|gz|wav|zip|bz2|xz|7z|avi|mov|ogm|mpe?g|mk[av]|webm)(\?.*)?$") { unset beresp.http.set-cookie; set beresp.do_stream = true; # Check memory usage it'll grow in fetch_chunksize blocks (128k by default) if the backend doesn't send a Content-Length header, so only enable it for big objects set beresp.do_gzip = false; # Don't try to compress it for storage } if (beresp.status == 301 || beresp.status == 302) { set beresp.http.Location = regsub(beresp.http.Location, ":[0-9]+", ""); } if (beresp.http.Set-Cookie && bereq.url !~ "wp-(login|admin)") { unset beresp.http.Set-Cookie; } if (beresp.ttl <= 0s || beresp.http.Set-Cookie || beresp.http.Vary == "*") { set beresp.ttl = 120s; set beresp.uncacheable = true; # Flags the response as hit-for-pass return (deliver); } if (beresp.status == 500 || beresp.status == 502 || beresp.status == 503 || beresp.status == 504) { return (abandon); } set beresp.grace = 6h; return (deliver); } sub vcl_deliver { if (obj.hits > 0) { # Add debug header to see if it's a HIT/MISS and the number of hits, disable when not needed set resp.http.X-Cache = "HIT"; } else { set resp.http.X-Cache = "MISS"; } set resp.http.X-Cache-Hits = obj.hits; unset resp.http.X-Powered-By; unset resp.http.Server; unset resp.http.X-Drupal-Cache; unset resp.http.X-Varnish; unset resp.http.Via; unset resp.http.Link; unset resp.http.X-Generator; unset resp.http.X-Clacks-Overhead; return (deliver); } sub vcl_purge { if (req.method != "PURGE") { set req.http.X-Purge = "Yes"; return(restart); } } sub vcl_synth { if (resp.status == 720) { set resp.http.Location = resp.reason; set resp.status = 301; return (deliver); } elseif (resp.status == 721) { set resp.http.Location = resp.reason; set resp.status = 302; return (deliver); } return (deliver); } sub vcl_fini { return (ok); } 

netstat -ant|grep 80

 $ netstat -ant|grep 80 tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN tcp 0 0 10.0.0.8:58972 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58912 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58888 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:44180 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:58948 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58984 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58828 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58998 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58840 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58900 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58924 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58960 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:59014 168.63.129.16:80 TIME_WAIT tcp 1 0 10.0.0.8:58972 169.254.169.254:80 CLOSE_WAIT tcp 0 0 10.0.0.8:58872 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58936 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58816 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58852 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:54180 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:58804 168.63.129.16:80 TIME_WAIT tcp 0 0 10.0.0.8:58874 168.63.129.16:80 TIME_WAIT tcp6 0 0 :::80 :::* LISTEN 

netstat -ant|grep 443

 tcp 0 0 10.0.0.8:54514 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54622 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54626 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44560 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54480 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:50576 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:44576 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54660 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44528 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54504 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44636 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54502 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44478 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:50572 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:44468 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54466 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44610 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54482 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54578 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44466 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44672 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54646 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54454 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54662 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:50570 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:54456 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54506 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44624 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44598 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54636 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54492 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44526 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:50666 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:50682 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:54648 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44660 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44492 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54548 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54470 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54650 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44538 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54658 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54610 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44540 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44658 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54638 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44586 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54562 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54458 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44514 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54574 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44490 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44562 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54634 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54600 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44504 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54614 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:50660 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:54526 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54612 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54550 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:50662 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:54490 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54598 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54590 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54602 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54552 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44480 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54468 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54518 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54588 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54528 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44502 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54576 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44622 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44646 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54564 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44588 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44612 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54530 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54624 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54478 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:54516 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44600 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44670 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:44648 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54566 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:50668 13.66.176.26:443 TIME_WAIT tcp 0 0 10.0.0.8:44574 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54494 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44516 52.239.148.164:443 TIME_WAIT tcp 0 0 10.0.0.8:54586 13.77.184.72:443 TIME_WAIT tcp 0 0 10.0.0.8:44634 52.239.148.164:443 TIME_WAIT 

公共IP

该服务器的公共IP为52.183.115.144

问题

我的问题是：

1. 如何解决这个问题，find原因？
2. 有什么事情可以想到，在Azure上访问虚拟机需要额外的域名吗？
3. 以上的细节是否可以说明这个问题的原因可能是什么？