<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">I have a set of minio (S3-compatoble block storage) servers running behind nginx on macOS High Sierra. While everything seems to work OK, I have noticed an unexplained error in the nginx logs.</div><div class="">For instance, when I use minio’s mc to ls a file:</div><div class=""> mc ls nginx/gerbentest/duplicati-ifdb6b7ac174b4e5094b04e7321d10c6b.dindex.zip.aes</div><div class="">mc reports (as expected):</div><div class=""> [2017-12-21 20:36:41 CET] 36KiB duplicati-ifdb6b7ac174b4e5094b04e7321d10c6b.dindex.zip.aes</div><div class=""><br class=""></div><div class="">So, everything works. So does duplicati (the backup solution that uses those mini backends). I can also connect direct to the servers and it works fine.</div><div class=""><br class=""></div><div class="">But nginx reports (apparently once per session):</div><div class=""> 2018/08/15 11:34:48 [error] 242#0: *881 kevent() reported that connect() failed (61: Connection refused) while connecting to upstream, client: 192.168.2.67, server: MYHOST, request: “GET /gerbentest/?delimiter=%2F&max-keys=1000&prefix=duplicati-ifdb6b7ac174b4e5094b04e7321d10c6b.dindex.zip.aes HTTP/1.1”, upstream: “<a href="http://[::1]:9003/gerbentest/?delimiter=%2F&max-keys=1000&prefix=duplicati-ifdb6b7ac174b4e5094b04e7321d10c6b.dindex.zip.aes" class="">http://[::1]:9003/gerbentest/?delimiter=%2F&max-keys=1000&prefix=duplicati-ifdb6b7ac174b4e5094b04e7321d10c6b.dindex.zip.aes</a>”, host: “MYHOST:9000”</div><div class=""><br class=""></div><div class="">I’d like to find out why this happens. Can someone help me find the cause of these errors? The config for the minio servers is:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">server {</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> listen 9000 ssl;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> server_name MYHOST;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> ssl_certificate minio_certificate_chained.crt;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> ssl_certificate_key minio_certificate.key;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> ssl_protocols TLSv1.2;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_buffering off;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> client_max_body_size 1000m;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> location / {</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_set_header Host $http_host;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> if ($http_authorization ~* "^AWS4-HMAC-SHA256 Credential=</span>REMOVED") {</div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_pass <a href="http://localhost:9001" class="">http://localhost:9001</a>;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> if ($http_authorization ~* "^AWS4-HMAC-SHA256 Credential=REMOVED") {</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_pass <a href="http://localhost:9002" class="">http://localhost:9002</a>;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> if ($http_authorization ~* "^AWS4-HMAC-SHA256 Credential=REMOVED") {</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_pass <a href="http://localhost:9003" class="">http://localhost:9003</a>;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> if ($http_authorization ~* "^AWS4-HMAC-SHA256 Credential=REMOVED") {</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> proxy_pass <a href="http://localhost:9004" class="">http://localhost:9004</a>;</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div><div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; background-color: rgb(255, 255, 255); min-height: 14px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div></div><div class=""><br class=""></div><div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Gerben Wierda</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="http://enterprisechess.com/" class="">Chess and the Art of Enterprise Architecture</a></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="http://masteringarchimate.com/" class="">Mastering ArchiMate</a></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="https://www.infoworld.com/blog/architecture-for-real-enterprises/" class="">Architecture for Real Enterprises</a> at InfoWorld</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="https://eapj.org/on-slippery-ice/" class="">On Slippery Ice</a> at EAPJ</div></div>
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