# Fail to rebuild and got 502 Bad Gateway **URL:** \ **Category:** Self-hosting\ **Created:** [August 19, 2017, 5:42pm UTC](https://meta.discourse.org/t/fail-to-rebuild-and-got-502-bad-gateway/68390 "2017-08-19T17:42:10Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![xiasummer](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/xiasummer/32/82790_2.png) [@xiasummer](https://meta.discourse.org/u/xiasummer)\ **Post date:** [August 19, 2017, 5:42pm UTC](https://meta.discourse.org/t/fail-to-rebuild-and-got-502-bad-gateway/68390/1 "2017-08-19T17:42:10Z")
with error info ```plaintext FAILED -------------------- Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle install --deployment --verbose --without test --without development' failed with return # Location of failure: /pups/lib/pups/exec_command.rb:108:in `spawn' exec failed with the params {"cd"=>"$home", "hook"=>"bundle_exec", "cmd"=>["su discourse -c 'bundle install --deployment --verbose --without test --without development'", "su discourse -c 'bundle exec rake db:migrate'", "su discourse -c 'bundle exec rake assets:precompile'"]} 5d1ddc450c71623db162884cdd854e23d9108eb10a45ba3b12833491667ede2a **FAILED TO BOOTSTRAP** please scroll up and look for earlier error messages, there may be more than one ``` As it said I should read the former lines for more error messages, I checked the message in **./launcher rebuild app** and found the only more message is ```plaintext 2017-08-20 04:27:13.878 UTC [56] postgres@postgres ERROR: database "discourse" already exists 2017-08-20 04:27:13.878 UTC [56] postgres@postgres STATEMENT: CREATE DATABASE discourse; createdb: database creation failed: ERROR: database "discourse" already exists I, [2017-08-20T04:27:13.880744 #15] INFO -- : I, [2017-08-20T04:27:13.881052 #15] INFO -- : > su postgres -c 'psql discourse -c "create user discourse;"' || true 2017-08-20 04:27:13.966 UTC [67] postgres@discourse ERROR: role "discourse" already exists 2017-08-20 04:27:13.966 UTC [67] postgres@discourse STATEMENT: create user discourse; ERROR: role "discourse" already exists ``` And here is the docker ps that might help. ```plaintext docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f8b075b4656b sameersbn/gitlab:latest "/sbin/entrypoint...." 3 months ago Up 21 minutes 443/tcp, 0.0.0.0:10022->22/tcp, 0.0.0.0:10080->80/tcp gitlab_gitlab_1 d2dd063db080 sameersbn/redis:latest "/sbin/entrypoint...." 11 months ago Up 21 minutes 6379/tcp gitlab_redis_1 e875efc4b0b5 sameersbn/postgresql:9.4-21 "/sbin/entrypoint.sh" 11 months ago Up 21 minutes 5432/tcp gitlab_postgresql_1 ``` * * * **Could you please help me？** * * * I checked meta, and found some perhaps similar answers, but I tried rebooted the server, and nothing happened. > [@\[Solved\]Bootstrap fails, Postgres already running](https://meta.discourse.org/t/solved-bootstrap-fails-postgres-already-running/20041): > > Hi, I’m attempting to install Discourse, but am failing so far. It appears that bootstrapping doesn’t want to… bootstrap? Anyhow, I read a couple of other threads about it and tried “./launcher rebuild app”, which gave the following output: WARNING: No memory limit support WARNING: No swap limit support Updating discourse docker Already up-to-date. Calculated ENV: -e LANG=en\_US.UTF-8 -e RAILS\_ENV=production -e UNICORN\_WORKERS=3 -e UNICORN\_SIDEKIQS=1 -e RUBY\_GC\_MALLOC\_LIMIT=40000000 -e RUBY\_HE… * * * Is it because this is a server in China, and now some of the websites are blocked by the great Chinese firewall? * * * ## What’s more It’s not only not rebuildable, but also the server encounters 502 Badgateway(nginx) error. I checked the docker is running. I restarted the discourse, rebooted the server, but still nothing happened. --- _[View the full topic](https://meta.discourse.org/t/fail-to-rebuild-and-got-502-bad-gateway/68390)._