konfig fails when run inside bash loop

[max-l-weaver]

kongfig version: 1.5.3

We run kongfig inside a bash loop that loops over a list of *.yml files and runs a kongfig --path $PATH for each one, so our script looks like this:

for config in $(/var/lib/path/to/files/*.yml);
do
  echo $config
  /bin/kongfig --path $config
  sleep 10
done

which has worked fine until recently, when we're getting the following errors per loop:

Loading config /var/lib/path/to/files/config.yml
Apply config to localhost:8001
Kong version: 0.12.1
Error: http://localhost:8001/apis/ee23b.../plugins: 500 Internal Server Error
 Error: http://localhost:8001/apis/ee23b.../plugins: 500 Internal Server Error
    at /usr/lib/node_modules/kongfig/lib/adminApi.js:139:25
    at process._tickCallback (internal/process/next_tick.js:109:7)

However if I run each one manually they work without issue.

sudo kongfig --path /var/lib/path/to/config/file.yml
Loading config /var/lib/path/to/config/file.yml
Apply config to localhost:8001
Kong version: 0.12.1

PATCH http://localhost:8001/apis/foo
 { upstream_url: 'https://foo.com',
  uris: [ '/' ],
  hosts: 'bar.foo.com' }
200 OK { created_at: 1519909028690,
  strip_uri: true,
  id: '',
  hosts: [ 'bar.foo.com' ],
  name: ...

As you can see our Kong version is 0.12.1
Any advice would be great,, thanks!

[takearun]

Hi, I am facing the same issue and seems to have been introduced in the later versions.
I have a feeling it's to do with the number of concurrent DB Connections Kongfig uses in the background. Any fix or workaround or suggestions would be helpful.

Thanks,
Arun