Try changing health check to a mediawiki url that will not redirect as ELBs do not like redirects
Try changing health check to a mediawiki url that will not redirect as ELBs do not like redirects

mozilla/wiki.mozilla.org,mozilla/wiki.mozilla.org,ziegeer/wiki.mozilla.org,ziegeer/wiki.mozilla.org,mozilla/wiki.mozilla.org,mozilla/wiki.mozilla.org,ziegeer/wiki.mozilla.org