# Issue on EC2

**URL:** <https://discourse.chef.io/t/issue-on-ec2/4880>\
**Category:** Chef Infra (archive)\
**Created:** [January 13, 2014, 4:04pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880 "2014-01-13T16:04:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Cyril\_Scetbon](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@Cyril\_Scetbon](https://discourse.chef.io/u/Cyril_Scetbon)\
**Post date:** [January 13, 2014, 4:04pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880/1 "2014-01-13T16:04:18Z")

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Hi,

I have difficulties to make chef-server works on an EC2 instance. I always get an issue which seems to cause processes to restart in an infinite loop. Processes always fall down and a lot of CPU is consumed by always restarting them. You can find an extract of logs at [http://pastebin.com/BAzP11t9](http://pastebin.com/BAzP11t9)

Using the server works but as processes fall down I get some “bad gateway” errors from nginx and a lot of CPU is consumed for wasted

## thanks

Cyril SCETBON

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**Author:** ![Gourav\_Shah](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.chef.io/gourav_shah/32/386_2.png) [@Gourav\_Shah](https://discourse.chef.io/u/Gourav_Shah)\
**Post date:** [January 13, 2014, 4:25pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880/2 "2014-01-13T16:25:21Z")

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1. What is the instance size you are using ?
2. What is the version of Chef Server that you are using?
3. Are you using RDS for postgres, or hosting it on the same server?

Thanks  
Gourav

On Mon, Jan 13, 2014 at 9:34 PM, Cyril Scetbon [cyril.scetbon@free.fr](mailto:cyril.scetbon@free.fr)wrote:

> Hi,
> 
> I have difficulties to make chef-server works on an EC2 instance. I always  
> get an issue which seems to cause processes to restart in an infinite loop.  
> Processes always fall down and a lot of CPU is consumed by always  
> restarting them. You can find an extract of logs at  
> [chef errors - Pastebin.com](http://pastebin.com/BAzP11t9)
> 
> Using the server works but as processes fall down I get some "bad gateway"  
> errors from nginx and a lot of CPU is consumed for wasted
> 
> ## thanks
> 
> Cyril SCETBON

--  
Founder,  
Initcron | [www.initcron.com](http://www.initcron.com)  
Blog: [www.initcron.org](http://www.initcron.org)  
Skype: initcron | Phone: +91 96 2328 2328

---

<div class="post-metadata">

**Author:** ![Cyril\_Scetbon](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@Cyril\_Scetbon](https://discourse.chef.io/u/Cyril_Scetbon)\
**Post date:** [January 13, 2014, 4:38pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880/3 "2014-01-13T16:38:20Z")

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On 13 Jan 2014, at 17:25, Gourav Shah [gs@initcron.org](mailto:gs@initcron.org) wrote:

> 1. What is the instance size you are using ?  
> I tried from small to xlarge
> 2. What is the version of Chef Server that you are using?  
> last version 11.0.10
> 3. Are you using RDS for postgres, or hosting it on the same server?  
> postgresql on the same server (no issue coming from postgresql except on small where I had to reduce shmmall memory parameter)
> 
> Thanks  
> Gourav
> 
> On Mon, Jan 13, 2014 at 9:34 PM, Cyril Scetbon [cyril.scetbon@free.fr](mailto:cyril.scetbon@free.fr) wrote:  
> Hi,
> 
> I have difficulties to make chef-server works on an EC2 instance. I always get an issue which seems to cause processes to restart in an infinite loop. Processes always fall down and a lot of CPU is consumed by always restarting them. You can find an extract of logs at [chef errors - Pastebin.com](http://pastebin.com/BAzP11t9)
> 
> Using the server works but as processes fall down I get some "bad gateway" errors from nginx and a lot of CPU is consumed for wasted
> 
> ## thanks
> 
> Cyril SCETBON
> 
> --  
> Founder,  
> Initcron | [www.initcron.com](http://www.initcron.com)  
> Blog: [www.initcron.org](http://www.initcron.org)  
> Skype: initcron | Phone: +91 96 2328 2328

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**Author:** ![Seth\_Falcon10](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.chef.io/seth_falcon10/32/307_2.png) [@Seth\_Falcon10](https://discourse.chef.io/u/Seth_Falcon10)\
**Post date:** [January 13, 2014, 6:20pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880/4 "2014-01-13T18:20:31Z")

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Hi there,

[cyril.scetbon@free.fr](mailto:cyril.scetbon@free.fr) writes:

> I have difficulties to make chef-server works on an EC2 instance. I  
> always get an issue which seems to cause processes to restart in an  
> infinite loop. Processes always fall down and a lot of CPU is consumed  
> by always restarting them. You can find an extract of logs at  
> [chef errors - Pastebin.com](http://pastebin.com/BAzP11t9)

The logs suggest that the rabbitmq service is unable to start because  
there is already an Erlang vm with the same name:

```
==> /var/log/chef-server/rabbitmq/current <==
2014-01-13_15:59:18.08077 0 plugins activated:
2014-01-13_15:59:18.08081
2014-01-13_15:59:18.12693 node with name "rabbit" already running on "localhost"
2014-01-13_15:59:18.13304 diagnostics:
2014-01-13_15:59:18.13335 - nodes and their ports on localhost: [{rabbit,47989},
2014-01-13_15:59:18.13337 {bookshelf,57685},
2014-01-13_15:59:18.13338 {erchef,44117},
2014-01-13_15:59:18.13338 {rabbitmqprelaunch12288,54518}]
2014-01-13_15:59:18.13343 - current node:
'rabbitmqprelaunch12288@chef-server'

```

So investigating that might be useful. Are you running any other Erlang  
projects on your node?

When you run `chef-server-ctl stop`, look for Erlang vms via

`ps -ef|grep [b]eam`

Are there any running?

- seth

--  
Seth Falcon | Development Lead | CHEF | [http://www.getchef.com/](http://www.getchef.com/) | @sfalcon

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<div class="post-metadata">

**Author:** ![Cyril\_Scetbon](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@Cyril\_Scetbon](https://discourse.chef.io/u/Cyril_Scetbon)\
**Post date:** [January 14, 2014, 8:39pm UTC](https://discourse.chef.io/t/issue-on-ec2/4880/5 "2014-01-14T20:39:24Z")

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Thanks, that was exactly the root cause !

## Regards

Cyril SCETBON

On 13 Jan 2014, at 19:20, Seth Falcon [seth@getchef.com](mailto:seth@getchef.com) wrote:

> Hi there,
> 
> [cyril.scetbon@free.fr](mailto:cyril.scetbon@free.fr) writes:
> 
> > I have difficulties to make chef-server works on an EC2 instance. I  
> > always get an issue which seems to cause processes to restart in an  
> > infinite loop. Processes always fall down and a lot of CPU is consumed  
> > by always restarting them. You can find an extract of logs at  
> > [chef errors - Pastebin.com](http://pastebin.com/BAzP11t9)
> 
> The logs suggest that the rabbitmq service is unable to start because  
> there is already an Erlang vm with the same name:
> 
> ==\> /var/log/chef-server/rabbitmq/current \<==  
> 2014-01-13\_15:59:18.08077 0 plugins activated:  
> 2014-01-13\_15:59:18.08081  
> 2014-01-13\_15:59:18.12693 node with name "rabbit" already running on "localhost"  
> 2014-01-13\_15:59:18.13304 diagnostics:  
> 2014-01-13\_15:59:18.13335 - nodes and their ports on localhost: [{rabbit,47989},  
> 2014-01-13\_15:59:18.13337 {bookshelf,57685},  
> 2014-01-13\_15:59:18.13338 {erchef,44117},  
> 2014-01-13\_15:59:18.13338 {rabbitmqprelaunch12288,54518}]  
> 2014-01-13\_15:59:18.13343 - current node:  
> 'rabbitmqprelaunch12288@chef-server'
> 
> So investigating that might be useful. Are you running any other Erlang  
> projects on your node?
> 
> When you run `chef-server-ctl stop`, look for Erlang vms via
> 
> `ps -ef|grep [b]eam`
> 
> Are there any running?
> 
> - seth
> 
> --  
> Seth Falcon | Development Lead | CHEF | [http://www.getchef.com/](http://www.getchef.com/) | @sfalcon