⚡ Nginx Errors

41 error notes

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

Fixing Nginx Error: upstream prematurely closed connection while reading response header

upstream prematurely closed connection while reading response header from upstream

nginxupstreamtimeoutbackend-crash

nginxintermediate

Fix Nginx SSL_do_handshake failed (ssl3_get_record:wrong version number) when proxying to upstream

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

nginxsslproxy_passhttps

nginxintermediate

Fixing Persistent Nginx Cache MISS Errors: Set-Cookie and Authorization Headers

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

nginxproxy_cachedevopsweb-performance

nginxbeginner

Fixing Nginx's 'could not build optimal types_hash' Warning

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-administrationweb-serverperformance-tuning

nginxintermediate

Fix Nginx 405 Method Not Allowed When POSTing to Static Content

405 Method Not Allowed

nginx405static-filespost-method

nginxbeginner

Fixing Nginx 'conflicting server name' - Stop Your Virtual Hosts from Being Ignored

nginx: [warn] conflicting server name "example.com" on 0.0.0.0:443, ignored

nginxdevopsserver-configtroubleshooting

nginxbeginner

Fixing Nginx (111: Connection refused) while connecting to upstream

connect() failed (111: Connection refused) while connecting to upstream, client: 1.2.3.4, server: example.com, upstream: "http://127.0.0.1:3000/"

nginxupstreamconnection-refusedtroubleshooting

nginxintermediate

Fixing Nginx 414: Handling 'Request-URI Too Large' for Long URLs

414 Request-URI Too Large

nginx414request-urisysadmin

nginxintermediate

Fix Nginx 'no resolver defined' Error for Dynamic proxy_pass

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

Fix Nginx Error: could not allocate new entry in shm zone "mylimit"

could not allocate new entry in shm zone "mylimit" while logging request

nginxrate-limitingshm-zonelimit_req

nginxintermediate

How to Fix Nginx '1024 worker_connections are not enough' Error

1024 worker_connections are not enough, reopen logs

nginxperformanceworker_connectionssysadmin

nginxintermediate

Fixing Nginx 400 Bad Request on WebSocket Reverse Proxy: Missing Upgrade and Connection Headers

upstream prematurely closed connection while reading response header from upstream

nginxwebsocketreverse-proxyupgrade

nginxintermediate

Fix Nginx 'invalid PID number' Error When Reloading or Stopping Service

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

nginxpidreloadsystemd

nginxintermediate

Fixing Nginx Error: [emerg] module is not binary compatible

nginx: [emerg] module "/etc/nginx/modules/ngx_http_geoip_module.so" is not binary compatible

nginxdynamic-modulegeoipcompatibility

nginxbeginner

Fix Nginx 'nginx: [emerg] unknown directive' Configuration Syntax Error

nginx: [emerg] unknown directive

nginxconfigurationsyntaxemerg

nginxintermediate

Fix Nginx 'could not build the server_names_hash' Error When Configuring Many Virtual Hosts

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

nginxserver_nameconfig-errorvhost

nginxintermediate

Fix Nginx Error: 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

How to Fix Nginx 499 (Client Closed Request) in Access Logs

GET /api/data HTTP/1.1" 499 0 "-" "Mozilla/5.0"

nginx499-errortimeoutclient-closed

nginxintermediate

Fix Nginx 'open() failed (13: Permission denied)' When Uploading Large Files

open() "/var/lib/nginx/tmp/client_body/0000000001" failed (13: Permission denied) while reading client request body

nginxpermissionuploadclient_body_temp

nginxintermediate

Fix Nginx 'cannot load certificate' SSL Error on Startup or Reload

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)

nginxssltlscertificate

nginxbeginner