Nginx Errors

41 error notes

nginxintermediate

Nginxで実際の訪問者IPではなくプロキシIPが表示される問題を修正する

Nginx access logs display internal IPs (like 127.0.0.1 or 10.0.0.x) instead of the actual visitor's public IP address.
nginxdevopscloudflarenetworking
nginxintermediate

Nginxの「Internal Redirection Cycle」(try_filesループ)の解決方法

nginxbeginner

Nginx 431: Request Header Fields Too Large の修正 (JWT と肥大化した Cookie)

431 Request Header Fields Too Large
nginx431large-client-header-buffersheaders
nginxintermediate

Nginx CORSエラー修正: 'Access-Control-Allow-Origin'ヘッダーが存在しない

Access to XMLHttpRequest at '...' from origin '...' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
nginxcorshttp-headersreverse-proxy
nginxintermediate

Nginx add_header の継承:消えるセキュリティヘッダーの謎を解く

X-Frame-Options/Content-Security-Policy header không xuất hiện trong response dù đã khai báo ở server block
nginxwebセキュリティdevopssysadmin
nginxintermediate

Nginxの警告「'ssl_stapling' ignored, issuer certificate not found」の解決方法

nginx: [warn] "ssl_stapling" ignored, issuer certificate not found for certificate "/etc/ssl/certs/example.com.crt"
nginxsslssl-staplingocsp
nginx初級

PHP-FPMにおけるNginxの「connect() to unix socket failed」エラーの修正方法

connect() to unix:/var/run/php/php8.1-fpm.sock failed (2: No such file or directory) while connecting to upstream
nginxphp-fpmlinux-administrationfastcgi
nginxintermediate

Nginxエラーの解決: upstream prematurely closed connection while reading response header

upstream prematurely closed connection while reading response header from upstream
nginxupstreamtimeoutbackend-crash
nginxintermediate

Nginxのアップストリームへのプロキシ時に発生する SSL_do_handshake failed (ssl3_get_record:wrong version number) の修正方法

SSL_do_handshake() failed (SSL: error:1408F10B:SSL routines:ssl3_get_record:wrong version number) while SSL handshaking to upstream
nginxsslproxy_passhttps
nginxintermediate

Nginxキャッシュの継続的なMISSエラーを修正する:Set-CookieとAuthorizationヘッダーの解決策

X-Cache-Status: MISS (Cache remains empty despite correct proxy_cache_path configuration)
nginxproxy_cachedevopsweb-performance
nginxbeginner

Nginxの「could not build optimal types_hash」警告を修正する

nginx: [warn] could not build optimal types_hash, you should increase either types_hash_max_size: 1024 or types_hash_bucket_size: 64; ignoring types_hash_bucket_size
nginxLinux管理Webサーバーパフォーマンスチューニング
nginxintermediate

NginxでPOSTリクエスト時に発生する405 Method Not Allowedの修正方法

405 Method Not Allowed
nginx405静的ファイルPOSTメソッド
nginxbeginner

Nginxの「conflicting server name」を修正:無視されるバーチャルホストへの対処法

nginx: [warn] conflicting server name "example.com" on 0.0.0.0:443, ignored
nginxdevopsサーバー設定トラブルシューティング
nginxbeginner

Nginxがupstream接続時に(111: Connection refused)エラーを出す問題の修正方法

connect() failed (111: Connection refused) while connecting to upstream, client: 1.2.3.4, server: example.com, upstream: "http://127.0.0.1:3000/"
nginxupstream接続拒否トラブルシューティング
nginx中級

Nginxの414エラー修正:長いURLによる「Request-URI Too Large」の解決方法

414 Request-URI Too Large
nginx414request-urisysadmin
nginxintermediate

Nginxの動的proxy_passで発生する「no resolver defined」エラーの修正

no resolver defined to resolve "api.example.com", client: 1.2.3.4, server: example.com, request: "GET / HTTP/1.1", upstream: "http://api.example.com/"
nginxdnsresolverproxy_pass
nginxintermediate

Nginxエラー修正: could not allocate new entry in shm zone "mylimit"

could not allocate new entry in shm zone "mylimit" while logging request
nginxレート制限共有メモリlimit_req
nginxintermediate

Nginxの「1024 worker_connections are not enough」エラーの解決方法

1024 worker_connections are not enough, reopen logs
nginxperformanceworker_connectionssysadmin
nginxintermediate

NginxのWebSocketリバースプロキシで発生する400 Bad RequestをUpgradeとConnectionヘッダーの追加で修正する

upstream prematurely closed connection while reading response header from upstream
nginxwebsocketリバースプロキシアップグレード
nginxintermediate

NginxのリロードまたはサービStoptime時の「invalid PID number」エラーを修正する

nginx: [error] invalid PID number "" in "/run/nginx.pid"
nginxpidreloadsystemd
nginxintermediate

Nginxエラーの解決方法: [emerg] module is not binary compatible

nginx: [emerg] module "/etc/nginx/modules/ngx_http_geoip_module.so" is not binary compatible
nginx動的モジュールgeoip互換性
nginxbeginner

Nginxの「nginx: [emerg] unknown directive」設定構文エラーを修正する

nginx: [emerg] unknown directive
nginx設定構文emerg
nginxintermediate

多数のバーチャルホスト設定時にNginxの「could not build the server_names_hash」エラーを修正する

fatal: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_size: 64
nginxserver_nameconfig-errorvhost
nginxintermediate

Nginxエラー修正: upstream timed out (110: Connection timed out) while reading response header

upstream timed out (110: Connection timed out) while reading response header from upstream
nginxupstreamtimeoutproxy
nginxintermediate

Nginx 499(クライアントが接続を切断)をアクセスログで修正する方法

GET /api/data HTTP/1.1" 499 0 "-" "Mozilla/5.0"
nginx499エラータイムアウトクライアント切断
nginxintermediate

Nginxの「open() failed (13: Permission denied)」を大容量ファイルアップロード時に修正する

open() "/var/lib/nginx/tmp/client_body/0000000001" failed (13: Permission denied) while reading client request body
nginxパーミッションアップロードclient_body_temp
nginxintermediate

NginxのSSLエラー「cannot load certificate」を起動・リロード時に修正する

nginx: [emerg] cannot load certificate "/etc/nginx/ssl/cert.pem": BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory)
nginxssltls証明書
nginxbeginner

PHP-FPM環境におけるNginxの「Primary script unknown」エラーの修正方法

FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream
nginxphp-fpmdevopsトラブルシューティング
nginxintermediate

Nginxの「(24: Too many open files)」アップストリームエラーの解決方法

socket() failed (24: Too many open files) while connecting to upstream
nginxlinuxチューニングdevopsサーバー最適化
nginxintermediate

NginxのSELinuxによる「connect() failed (13: Permission denied)」エラーをアップストリーム接続で修正する

connect() to 127.0.0.1:8080 failed (13: Permission denied) while connecting to upstream
nginxselinuxpermission-deniedupstream
nginxintermediate

Nginxエラーの解決方法:[error] host not found in upstream "backend.example.com"

[error] ... host not found in upstream "backend.example.com"
nginxdnsdevopsdocker
nginxintermediate

Nginxの「upstream sent too big header while reading response header from upstream」を修正する

upstream sent too big header while reading response header from upstream
nginxproxy_buffer_sizehttpヘッダー
nginxintermediate

Nginx の ERR_TOO_MANY_REDIRECTS を修正する:「内部リダイレクトサイクル」の解決策

rewrite or internal redirection cycle while internally redirecting to "/index.php"
nginxdevopsphp-fpmサーバー設定
nginxintermediate

Nginxの「no live upstreams」エラーの解決策:実践ガイド

no live upstreams while connecting to upstream
nginxdevopsロードバランシングトラブルシューティング
nginxbeginner

Nginxの[emerg] bind() to 0.0.0.0:80 failed (13: Permission denied)を修正する

nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied)
nginxbindパーミッションポート
nginxbeginner

Nginxの「bind() to 0.0.0.0:80 failed (98: Address already in use)」エラーの修正方法

bind() to 0.0.0.0:80 failed (98: Address already in use)
nginxポートbind
nginxbeginner

Nginx 403 Forbiddenを修正する:パーミッションの誤りまたはインデックスファイルの欠落

403 Forbidden
nginxパーミッション403ディレクトリ
nginxbeginner

Nginx 413 Request Entity Too Large エラーの解決方法

413 Request Entity Too Large
nginxアップロードclient_max_body_size
nginxintermediate

Nginx 504 Gateway Timeout エラーの修正方法

504 Gateway Timeout
nginxtimeoutgatewayproxy
nginxintermediate

Nginx の 'upstream sent invalid header while reading response header from upstream' エラーを PHP-FPM で修正する方法

upstream sent invalid header while reading response header from upstream
nginxphp-fpmupstreamヘッダー
nginxintermediate

Nginx 502 Bad Gatewayエラーの修正方法

502 Bad Gateway nginx
nginx502proxyupstream