# Courier fetch: Bad Gateway (6.4.0) **URL:** \ **Category:** Kibana\ **Created:** [August 26, 2018, 2:33pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068 "2018-08-26T14:33:45Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![mimo74](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mimo74/32/34818_2.png) [@mimo74](https://discuss.elastic.co/u/mimo74)\ **Post date:** [August 26, 2018, 2:33pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/1 "2018-08-26T14:33:45Z")
Hi there, i am fairly new to this... and i am stuck... just installed my ELK stack... filebeat seems to working fine... but i moved on to metricbeat i get this error in Kibana when trying for example to select "metricbeat-\*" under "discover" Fatal Error: Courier fetch: Bad Gateway Version: 6.4.0 Build: 17929 when i load the [[Metricbeat System] Overview] Dashboard it starts to visualise and then switches to the same Fatal Error. what might be the problem? where can i try to find out more about it? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [August 27, 2018, 12:29am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/2 "2018-08-27T00:29:56Z")
Can you check your Kibana and Elasticsearch logs for anything further? ---
**Author:** ![mimo74](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mimo74/32/34818_2.png) [@mimo74](https://discuss.elastic.co/u/mimo74)\ **Post date:** [August 27, 2018, 5:00am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/3 "2018-08-27T05:00:24Z")
Elasticsearch isn't logging anything when this happens I tink there is no Kibana log ... I'll have to look for that later today... ---
**Author:** ![mimo74](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mimo74/32/34818_2.png) [@mimo74](https://discuss.elastic.co/u/mimo74)\ **Post date:** [August 27, 2018, 5:09am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/4 "2018-08-27T05:09:59Z")
I found this in the Nginx error log... may that has something to do with it... (I am sure it has)... 2018/08/27 07:08:36 [error] 27876#0: \*193227 upstream sent too big header while reading response header from upstream, client: xx.xx.xx.xx, server: xxxx.xx, request: "POST /elasticsearch/\_msearch HTTP/1.1", upstream: "[http://127.0.0.1:5601/elasticsearch/\_msearch](http://127.0.0.1:5601/elasticsearch/_msearch)", host: "xxxxx.xx:5601", referrer: "[http://xxxx.xx:5601/app/kibana](http://xxxx.xx:5601/app/kibana)" ---
**Author:** ![arlen](https://avatars.discourse-cdn.com/v4/letter/a/7ea924/32.png) [@arlen](https://discuss.elastic.co/u/arlen)\ **Post date:** [August 27, 2018, 3:09pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/5 "2018-08-27T15:09:38Z")
I'm getting that, too. I just updated metricbeat to 6.4 and I'm only getting this from the metricbeat index. I can view other indexes (audit beat, filebeat, etc.) fine. This makes the second consecutive metricbeat update that's broken my system...I think I'm going to stop updating for a while until things settle down with it. ---
**Author:** ![mimo74](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mimo74/32/34818_2.png) [@mimo74](https://discuss.elastic.co/u/mimo74)\ **Post date:** [August 27, 2018, 4:07pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/6 "2018-08-27T16:07:57Z")
I found something about the "upstream sent too big header" i had to add ``` proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; ``` to my nginx configuration. that helps. ``` server { listen xxx.xxx.xxx.xxx:5601; server_name xxx.de; auth_basic "Restricted Access"; auth_basic_user_file /etc/nginx/htpasswd.users; location / { proxy_pass http://localhost:5601; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; } } ``` ---
**Author:** ![Faktu4noCaM](https://avatars.discourse-cdn.com/v4/letter/f/71c47a/32.png) [@Faktu4noCaM](https://discuss.elastic.co/u/Faktu4noCaM)\ **Post date:** [August 29, 2018, 6:48am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/7 "2018-08-29T06:48:04Z")
Its really works! Thanks! ---
**Author:** ![sevenfourk](https://avatars.discourse-cdn.com/v4/letter/s/7ba0ec/32.png) [@sevenfourk](https://discuss.elastic.co/u/sevenfourk)\ **Post date:** [August 30, 2018, 7:13am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/8 "2018-08-30T07:13:42Z")
Sir, that was it! ---
**Author:** ![erickgnavar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/erickgnavar/32/35324_2.png) [@erickgnavar](https://discuss.elastic.co/u/erickgnavar)\ **Post date:** [September 8, 2018, 12:36am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/9 "2018-09-08T00:36:58Z")
That was the problem. Thanks a lot ---
**Author:** ![SA010](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SA010](https://discuss.elastic.co/u/SA010)\ **Post date:** [September 11, 2018, 8:38am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/10 "2018-09-11T08:38:33Z")
This works. Than you! ---
**Author:** ![Sushimaster](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@Sushimaster](https://discuss.elastic.co/u/Sushimaster)\ **Post date:** [October 1, 2018, 10:12am UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/11 "2018-10-01T10:12:12Z")
**This should be mentioned in the docs!** ---
**Author:** ![inlikefletch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/inlikefletch/32/4834_2.png) [@inlikefletch](https://discuss.elastic.co/u/inlikefletch)\ **Post date:** [October 4, 2018, 6:23pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/12 "2018-10-04T18:23:19Z")
I'm experiencing the same issue 'Courier fetch: Bad Gateway' as well as just with querying my metricbeat index, but I am not using nginx. I am using haproxy. Anyone know how I can set those limits in haproxy? ---
**Author:** ![inlikefletch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/inlikefletch/32/4834_2.png) [@inlikefletch](https://discuss.elastic.co/u/inlikefletch)\ **Post date:** [October 4, 2018, 7:02pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/13 "2018-10-04T19:02:17Z")
I found how to resolve for those using haproxy. In the global section of your config, add the following: tune.bufsize 128000 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 1, 2018, 7:05pm UTC](https://discuss.elastic.co/t/courier-fetch-bad-gateway-6-4-0/146068/14 "2018-11-01T19:05:37Z")
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