Just ran into a bit of a problem. I did routine updates to my site Tappara.co: 1.6.2 → 1.6.4 via git pull and ./launcher rebuild app It went cleanly. Installed a few updates available to Ubuntu 16.04 server Rebooted Now the site refuses to come back online. Now this stuff goes beyond my linux sysadmin skillz. From what I can see, Docker is running and so does the app. I see relevant processes (ruby etc) starting, but basically idling. The site is reporting a 521 error. Tried re-rebuild a couple of times, but no luck. The installation is originally made with Discourse 1.5b in December, but switched to stable branch when it was released in April. I would guess that http requests are not correctly routed, but I have not touched any settings or parameters of that field. This is basically a default installation. I do not have Let’s Encrypt or other certificate enabled. Anyone seen similar recently? Newbie friendly tips on how to start diagnosing and fixing? There seems to be a flood of errors in nginx/error.log 2016/09/28 12:32:09 [emerg] 977#977: invalid number of arguments in "set_real_ip_from" directi$

Cloudflare changed the URL they list their IP ranges from. I’ve pushed out a fix; could you update your discourse_docker repo and try the rebuild again? If it doesn’t work, dump the full output of the rebuild command into a gist so I can take a look at what’s going wrong.

What do you mean? It’s a standard Discourse setup, according to your install guide. To the letter. @sam /# nginx -t nginx: [emerg] invalid number of arguments in "set_real_ip_from" directive in /etc/nginx/conf.d/discourse.conf:56 nginx: configuration file /etc/nginx/nginx.conf test failed

Do you have a nginx running outside the container?

No apparently not. (And some filler here, thanks to minimum post length)

Since our nginx version is HARD pinned, I don’t know how would you get a broken version :thinking: On your app.yml you are listening which posts?

## which TCP/IP ports should this container expose? expose: - "80:80" # fwd host port 80 to container port 80 (http) .yml has not been modified in ages.

[image] ljpp: What do you mean? you have an app.yml file … what is the text in it :slight_smile:

My discourse.conf from a default as possible install doesn’t even have a set_real_ip on it :thinking:. Your templates on app.yml start are those? templates: - "templates/postgres.template.yml" - "templates/redis.template.yml" - "templates/web.template.yml" - "templates/web.ratelimited.template.yml" ## Uncomment these two lines if you wish to add Lets Encrypt (https) - "templates/web.ssl.template.yml" - "templates/web.letsencrypt.ssl.template.yml"

Aha, so you are probably using this: discourse_docker/templates/cloudflare.template.yml at master · discourse/discourse_docker · GitHub And it’s probably broken, since it’s 1 year old, and we updated nginx in the mean time, and don’t really use cloudfare. I would disable this cloudfare thing, get everything backup, and then try again with time. You will need to disable cloudfare magic in their console too.

templates: - "templates/postgres.template.yml" - "templates/redis.template.yml" - "templates/web.template.yml" - "templates/sshd.template.yml" - "templates/web.ratelimited.template.yml" - "templates/cloudflare.template.yml" Okay, so now we are talking. Yes indeed I use CloudFlare DNS. The .yml is from 1.5b.

But @falco , what the heck was actually changed and why? This was a minor security update in the stable branch. CloudFlare is awesome in many ways – saves a ton of bandwidth, blocks bad bots etc.

Urgent: Site down after upgrade to 1.6.4 due to Cloudflare template

Product Support

mpalmer (Matt Palmer) September 29, 2016, 9:15pm 23

Yes, it would have failed either way.

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Urgent: Site down after upgrade to 1.6.4 due to Cloudflare template

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