Description of problem:
http://gluster.org/download/ redirects to https://www.gluster.org/download-server-is-down-building-a-replacement/
We probably don't need to have this anymore. Pretty sure this is over on the redirect side and not the WP side.
I beg to differ:
$ curl -v https://www.gluster.org/download/
* About to connect() to www.gluster.org port 443 (#0)
* Trying 188.8.131.52...
* Connected to www.gluster.org (184.108.40.206) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
* CAfile: /etc/pki/tls/certs/ca-bundle.crt
* SSL connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
* Server certificate:
* subject: CN=www.gluster.org
* start date: août 31 14:26:00 2017 GMT
* expire date: nov. 29 14:26:00 2017 GMT
* common name: www.gluster.org
* issuer: CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US
> GET /download/ HTTP/1.1
> User-Agent: curl/7.29.0
> Host: www.gluster.org
> Accept: */*
< HTTP/1.1 301 Moved Permanently
< Server: nginx
< Date: Tue, 12 Sep 2017 12:13:01 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 0
< Connection: keep-alive
< Keep-Alive: timeout=20
< Expires: Wed, 11 Jan 1984 05:00:00 GMT
< Location: https://www.gluster.org/download-server-is-down-building-a-replacement/
< X-Cacheable: non200
< Cache-Control: max-age=600, must-revalidate
< Accept-Ranges: bytes
< X-Cache: MISS
< X-Cache-Group: normal
< X-Type: default
* Connection #0 to host www.gluster.org left intact
That's www.gluster.org, on 220.127.116.11 (GCE IP) who do a 302 redirect using nginx, so that's wpengine side.
$ host gluster.wpengine.com
gluster.wpengine.com has address 18.104.22.168
I suspect that's a prefix matching plugin or something, since https://www.gluster.org/downlo also redirect to the wrong page.
So I started to look for the plugins installed, and out of the 7 there, none did look like a culprit.
So after asking to a friend serving as a teddy bear, he pointed me on https://wordpress.stackexchange.com/questions/92103/disable-wordpress-url-auto-complete
There is a plugin for that:
Resolved by making a /download page that can redirect as needed back to /install.
Thanks for the hunting!