# Discourse failure after upgrade

**URL:** https://meta.discourse.org/t/discourse-failure-after-upgrade/103411
**Category:** Support
**Created:** [December 3, 2018, 11:42pm UTC](https://meta.discourse.org/t/discourse-failure-after-upgrade/103411 "2018-12-03T23:42:46Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![ChrisBeach](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/chrisbeach/32/214628_2.png) [@ChrisBeach](https://meta.discourse.org/u/ChrisBeach)
#### Post date: [December 3, 2018, 11:42pm UTC](https://meta.discourse.org/t/discourse-failure-after-upgrade/103411/1 "2018-12-03T23:42:46Z")

</div>

Just did a routine upgrade, and the site is throwing a 504 error. Unicorn log is repeatedly cycling the following:

```plaintext
Parent was terminated!
Terminated
I, [2018-12-03T23:40:24.956767 #19874] INFO -- : Refreshing Gem list
Prometheus Exporter, failed to send message Network is unreachable - connect(2) for "localhost" port 9405
Prometheus Exporter, failed to send message Network is unreachable - connect(2) for "localhost" port 9405
2018-12-03 23:40:33 +0000: Starting Prometheus Collector pid: 19941 port: 9405
2018-12-03 23:40:33 +0000: Prometheus Collector is monitoring 19874
E, [2018-12-03T23:40:33.860897 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
E, [2018-12-03T23:40:33.860974 #19874] ERROR -- : retrying in 0.5 seconds (4 tries left)
E, [2018-12-03T23:40:34.361379 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
E, [2018-12-03T23:40:34.361532 #19874] ERROR -- : retrying in 0.5 seconds (3 tries left)
E, [2018-12-03T23:40:34.862022 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
E, [2018-12-03T23:40:34.862179 #19874] ERROR -- : retrying in 0.5 seconds (2 tries left)
E, [2018-12-03T23:40:35.362648 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
E, [2018-12-03T23:40:35.362808 #19874] ERROR -- : retrying in 0.5 seconds (1 tries left)
E, [2018-12-03T23:40:35.863287 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
E, [2018-12-03T23:40:35.863440 #19874] ERROR -- : retrying in 0.5 seconds (0 tries left)
E, [2018-12-03T23:40:36.363854 #19874] ERROR -- : adding listener failed addr=0.0.0.0:3000 (in use)
/var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/socket_helper.rb:164:in `bind': Address already in use - bind(2) for 0.0.0.0:3000 (Errno::EADDRINUSE)
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/socket_helper.rb:164:in `new_tcp_server'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/socket_helper.rb:144:in `bind_listen'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:241:in `listen'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:851:in `block in bind_new_listeners!'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:851:in `each'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:851:in `bind_new_listeners!'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:140:in `start'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/bin/unicorn:126:in `<top (required)>'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/bin/unicorn:23:in `load'
        from /var/www/discourse/vendor/bundle/ruby/2.5.0/bin/unicorn:23:in `<main>'
Parent was terminated!
Terminated
I, [2018-12-03T23:40:37.345773 #19959] INFO -- : Refreshing Gem list

```

Currently trying a `./launcher rebuild app` after disabling the prometheus plugin

---

<div class="post-metadata">

### Author: ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)
#### Post date: [December 4, 2018, 1:01am UTC](https://meta.discourse.org/t/discourse-failure-after-upgrade/103411/2 "2018-12-04T01:01:24Z")

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> [@ChrisBeach](#):
>
> Address already in use - bind(2) for 0.0.0.0:3000

You are going to need to do a rebuild ASAP. The Prometheus plugin is good. I have noticed `admin/upgrade` is a bit more flaky recently @tgxworld.

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<div class="post-metadata">

### Author: ![ChrisBeach](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/chrisbeach/32/214628_2.png) [@ChrisBeach](https://meta.discourse.org/u/ChrisBeach)
#### Post date: [December 4, 2018, 1:05am UTC](https://meta.discourse.org/t/discourse-failure-after-upgrade/103411/3 "2018-12-04T01:05:09Z")

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The rebuild fixed it. Thanks @sam

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<div class="post-metadata">

### Author: ![zogstrip](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/zogstrip/32/512781_2.png) [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [December 4, 2018, 9:17am UTC](https://meta.discourse.org/t/discourse-failure-after-upgrade/103411/4 "2018-12-04T09:17:08Z")

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