Google App Engine Docker容器502错误网关 _docker容器

君不见长松卧壑困风霜，时来屹立扶明堂。这篇文章主要讲述Google App Engine Docker容器502错误网关相关的知识，希望能为你提供帮助。
我正在尝试将docker映像部署到google app引擎，我成功地管理了该映像并将其推送到GCR。并使用gcloud app deploy --image 'link-to-image-on-gcr'
进行部署但是访问应用程序时，我得到了502错误的网关。我ssh进入服务器，并在docker中检查了nginx容器的日志，发现以下日志

2020/05/04 00:52:50 [error] 33#33: *127 connect() failed (111: Connection refused) while connecting to upstream, client: 74.125.24.153, server: , request: "GET /wp-login.php HTTP/1.1", upstream: "http://172.17.0.1:8080/wp-login.php", host: "myappengineservice-myrepo.ue.r.appspot.com"

默认情况下，我的docker映像只有一个容器（它的Wordpress映像），当我部署到应用程序引擎时，我想默认情况下，应用程序引擎将在docker中启动我的docker容器并通过Nginx代理公开前端，因此所有请求通过Nginx代理路由。
玩了一会儿之后，我编辑了Nginx配置文件并遇到了这一行

location / { proxy_pass http://app_server;

我对此进行了编辑，并用我的Wordpress docker容器的内部IP地址替换了它。

(proxy_pass http://172.17.0.6;
)

瞧，它似乎已经奏效了，请求现在被路由到了我的docker容器中。显然，这是暂时的解决方案，我如何才能使它永久化，以及关于发生这种情况的任何想法？
app.yaml

runtime: custom service: my-wordpress env: flex

nginx.conf（在Nginx容器内部）

daemon off; worker_processes auto; events { worker_connections 4096; multi_accept on; }http { include mime.types; server_tokens off; variables_hash_max_size 2048; # set max body size to 32m as appengine supports. client_max_body_size 32m; tcp_nodelay on; tcp_nopush on; underscores_in_headers on; # GCLB uses a 10 minutes keep-alive timeout. Setting it to a bit more here # to avoid a race condition between the two timeouts. keepalive_timeout 650; # Effectively unlimited number of keepalive requests in the case of GAE flex. keepalive_requests 4294967295; upstream app_server { keepalive 192; server gaeapp:8080; }geo $source_type { default ext; 127.0.0.0/8 lo; 169.254.0.0/16 sb; 35.191.0.0/16 lb; 130.211.0.0/22 lb; 172.16.0.0/12 do; }map $http_upgrade $ws_connection_header_value { default ""; websocket upgrade; } # ngx_http_realip_module gets the second IP address from the last of the X-Forwarded-For header # X-Forwarded-For: [USER REQUEST PROVIDED X-F-F.]USER-IP.GCLB_IP set_real_ip_from0.0.0.0/0; set_real_ip_from0::/0; real_ip_headerX-Forwarded-For; iap_jwt_verify off; iap_jwt_verify_project_number 96882395728; iap_jwt_verify_app_id my-project-id; iap_jwt_verify_key_file /iap_watcher/iap_verify_keys.txt; iap_jwt_verify_iap_state_file /iap_watcher/iap_state; iap_jwt_verify_state_cache_time_sec 300; iap_jwt_verify_key_cache_time_sec 43200; iap_jwt_verify_logs_only on; server { iap_jwt_verify on; # self signed ssl for load balancer traffic listen 8443 default_server ssl; ssl_certificate /etc/ssl/localcerts/lb.crt; ssl_certificate_key /etc/ssl/localcerts/lb.key; ssl_protocols TLSv1.2; ssl_ciphers EECDH+AES256:!SHA1; ssl_prefer_server_ciphers on; ssl_session_timeout 3h; proxy_pass_header Server; gzip on; gzip_proxied any; gzip_types text/html text/plain text/css text/xml text/javascript application/json application/javascript application/xml application/xml+rss application/protobuf application/x-protobuf; gzip_vary on; # Allow more space for request headers. large_client_header_buffers 4 32k; # Allow more space for response headers. These settings apply for response # only, not requests which buffering is disabled below. proxy_buffer_size 64k; proxy_buffers 32 4k; proxy_busy_buffers_size 72k; # Explicitly set client buffer size matching nginx default. client_body_buffer_size 16k; # If version header present, make sure it's correct.if ($http_x_appengine_version !~ '(?:^$)|(?:^my-wordpress:20200504t053100(?:..*)?$)') { return 444; }set $x_forwarded_for_test ""; # If request comes from sb, lo, or do, do not care about x-forwarded-for header. if ($source_type !~ sb|lo|do) { set $x_forwarded_for_test $http_x_forwarded_for; }# For local health checks only. if ($http_x_google_vme_health_check = 1) { set $x_forwarded_for_test ""; }location / {proxy_pass http://app_server; proxy_redirect off; proxy_http_version 1.1; proxy_set_header Connection ""; proxy_set_header Host $host; proxy_set_header X-Forwarded-Host $server_name; proxy_send_timeout 3600s; proxy_read_timeout 3600s; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection $ws_connection_header_value; proxy_set_header X-AppEngine-Api-Ticket $http_x_appengine_api_ticket; proxy_set_header X-AppEngine-Auth-Domain $http_x_appengine_auth_domain; proxy_set_header X-AppEngine-BlobChunkSize $http_x_appengine_blobchunksize; proxy_set_header X-AppEngine-BlobSize $http_x_appengine_blobsize; proxy_set_header X-AppEngine-BlobUpload $http_x_appengine_blobupload; proxy_set_header X-AppEngine-Cron $http_x_appengine_cron; proxy_set_header X-AppEngine-Current-Namespace $http_x_appengine_current_namespace; proxy_set_header X-AppEngine-Datacenter $http_x_appengine_datacenter; proxy_set_header X-AppEngine-Default-Namespace $http_x_appengine_default_namespace; proxy_set_header X-AppEngine-Default-Version-Hostname $http_x_appengine_default_version_hostname; proxy_set_header X-AppEngine-Federated-Identity $http_x_appengine_federated_identity; proxy_set_header X-AppEngine-Federated-Provider $http_x_appengine_federated_provider; proxy_set_header X-AppEngine-Https $http_x_appengine_https; proxy_set_header X-AppEngine-Inbound-AppId $http_x_appengine_inbound_appid; proxy_set_header X-AppEngine-Inbound-User-Email $http_x_appengine_inbound_user_email; proxy_set_header X-AppEngine-Inbound-User-Id $http_x_appengine_inbound_user_id; proxy_set_header X-AppEngine-Inbound-User-Is-Admin $http_x_appengine_inbound_user_is_admin; proxy_set_header X-AppEngine-QueueName $http_x_appengine_queuename; proxy_set_header X-AppEngine-Request-Id-Hash $http_x_appengine_request_id_hash; proxy_set_header X-AppEngine-Request-Log-Id $http_x_appengine_request_log_id; proxy_set_header X-AppEngine-TaskETA $http_x_appengine_tasketa; proxy_set_header X-AppEngine-TaskExecutionCount $http_x_appengine_taskexecutioncount; proxy_set_header X-AppEngine-TaskName $http_x_appengine_taskname; proxy_set_header X-AppEngine-TaskRetryCount $http_x_appengine_taskretrycount; proxy_set_header X-AppEngine-TaskRetryReason $http_x_appengine_taskretryreason; proxy_set_header X-AppEngine-Upload-Creation $http_x_appengine_upload_creation; proxy_set_header X-AppEngine-User-Email $http_x_appengine_user_email; proxy_set_header X-AppEngine-User-Id $http_x_appengine_user_id; proxy_set_header X-AppEngine-User-Is-Admin $http_x_appengine_user_is_admin; proxy_set_header X-AppEngine-User-Nickname $http_x_appengine_user_nickname; proxy_set_header X-AppEngine-User-Organization $http_x_appengine_user_organization; proxy_set_header X-AppEngine-Version ""; add_header X-AppEngine-Flex-AppLatency $request_time always; }include /var/lib/nginx/extra/*.conf; } server { # expose /nginx_status but on a different port (8090) to avoid # external visibility / conflicts with the app. listen 8090; location /nginx_status { stub_status on; access_log off; } location / { root /dev/null; } }server { # expose health checks on a different port to avoid # external visibility / conflicts with the app. listen 10402 ssl; ssl_certificate /etc/ssl/localcerts/lb.crt; ssl_certificate_key /etc/ssl/localcerts/lb.key; ssl_protocols TLSv1.2; ssl_ciphers EECDH+AES256:!SHA1; ssl_prefer_server_ciphers on; ssl_session_timeout 3h; location = /liveness_check { if ( -f /tmp/nginx/lameducked ) {return 503 'lameducked'; }if ( -f /var/lib/google/ae/unhealthy/sidecars ) {return 503 'unhealthy sidecars'; }if ( !-f /var/lib/google/ae/disk_not_full ) {return 503 'disk full'; }if ( -f /tmp/nginx/app_lameducked ) {return 200 'ok'; }return 200 'ok'; }location = /readiness_check { if ( -f /tmp/nginx/lameducked ) {return 503 'lameducked'; }if ( -f /var/lib/google/ae/unhealthy/sidecars ) {return 503 'unhealthy sidecars'; }if ( !-f /var/lib/google/ae/disk_not_full ) {return 503 'disk full'; }if ( -f /tmp/nginx/app_lameducked ) {return 503 'app lameducked'; }return 200 'ok'; } }# Add session affinity entry to log_format line i.i.f. the GCLB cookie # is present. map $cookie_gclb $session_affinity_log_entry { '' ''; default sessionAffinity=$cookie_gclb; }# Output nginx access logs in the standard format, plus additional custom # fields containing "X-Cloud-Trace-Context" header, the current epoch # timestamp, the request latency, and "X-Forwarded-For" at the end. # If you make changes to the log format below, you MUST validate this against # the parsing regex at: # GoogleCloudPlatform/appengine-sidecars-docker/fluentd_logger/managed_vms.conf # (In general, adding to the end of the list does not require a change if the # field does not need to be logged.)log_format custom '$remote_addr - $remote_user [$time_local] ' '"$request" $status $body_bytes_sent ' '"$http_referer" "$http_user_agent" ' 'tracecontext="$http_x_cloud_trace_context" ' 'timestampSeconds="${msec}000000" ' 'latencySeconds="$request_time" ' 'x-forwarded-for="$http_x_forwarded_for" ' 'uri="$uri" ' 'appLatencySeconds="$upstream_response_time" ' 'appStatusCode="$upstream_status" ' 'upgrade="$http_upgrade" ' 'iap_jwt_action="$iap_jwt_action" ' '$session_affinity_log_entry'; access_log /var/log/nginx/access.log custom; error_log /var/log/nginx/error.log warn; }

/ etc / hosts（在Nginx容器内部）

root@f9c9cb5df8e2:/etc/nginx# cat /etc/hosts 127.0.0.1localhost ::1localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters 172.17.0.1gaeapp 172.17.0.5f9c9cb5df8e2

docker ps结果