[chef] Re: execute bash command

[Daniel DeLeo < >]

On Monday, November 24, 2014 at 1:29 AM, Gareth Allen wrote:

> Hi all,
>  
> I've written my first custom resource to remove an omd site, I'm
> trying to include an echo in my execute statement as the application
> requires user input. My provider looks like this:
>  
> #----------
> action :remove do
> execute "remove-site" do
> command "echo -e 'yes' | /usr/bin/omd rm #{new_resource.site_name}"
> only_if { ::File.directory?("/opt/omd/sites/#{new_resource.site_name}") }
> end
> end
> #----------
>  
> Then my recipe:
>  
> #----------
> omd_site 'test' do
> action :remove
> end
> #----------
>  
> The chef-client shows the following and succeeds, but the site is
> never removed.
>  
> - execute echo -e 'yes' | /usr/bin/omd rm test
>  
> If I run the command manually everything works as expected. Below is
> the output.
>  
> ----------
> PLEASE NOTE: This action removes all configuration files
> and variable data of the site.
>  
> In detail the following steps will be done:
> - Stop all processes of the site
> - Unmount tmpfs of the site
> - Remove tmpfs of the site from fstab
> - Remove the system user <SITENAME>
> - Remove the system group <SITENAME>
> - Remove the site home directory
> - Restart the system wide apache daemon
> (yes/NO): Removing Crontab...
> no crontab for test
> Stopping dedicated Apache for site test...(not running)...OK
> Stopping nagios...not running...OK
> npcd was not running... could not stop
> Stopping rrdcached...not running.
> Unmounting temporary filesystem...OK
> Removing /omd/sites/test/tmp from /etc/fstab...OK
> Deleting user and group test...OK
> Restarting Apache...[Mon Nov 24 11:26:25.553556 2014]
> [proxy_html:notice] [pid 25995:tid 140261059786624] AH01425: I18n
> support in mod_proxy_html requires mod_xml2enc. Without it, non-ASCII
> characters in proxied pages are likely to display incorrectly.
> AH00558: apache2: Could not reliably determine the server's fully
> qualified domain name, using 127.0.1.1. Set the 'ServerName' directive
> globally to suppress this message
> OK
> ----------

Is this the output you expect? Is there anything different that you see when 
you run it by hand?
  
>  
> I assume the problem is with the echo statement. Any ideas?
Could it be something as simple as code in another recipe re-creating the 
site?

If it is a problem with giving data to the command’s stdin, you could try 
using mixlib-shellout’s `input` feature instead of echoing to a pipe. We were 
missing API documentation for this feature, but I added some just now: 
https://github.com/opscode/mixlib-shellout/pull/75
  
>  
> Regards,
> Gareth

HTH,   
Dan DeLeo