Are there issue with mass deployment related to SSH?

Archives Ansible Project
1

Hello!

I have a question that derives from the comparison Ansible vs. Salt.

As Ansible relies on SSH connection some people say that this has a downside for a scenario like

  • mass deployment of 1000 servers

Can you confirm that there’s a severe performance impact when Ansible master must establish SSH connection to 1000+ servers at the same time (for mass deployment)?

THX

2

I suggest you start with reading about http://docs.ansible.com/ansible/latest/intro_configuration.html#forks

3

This means there’s no drawback with regards to performance when using Ansible in a landscape with +1000 servers?

4

Hey,

combined with the aforementioned forks configuration it all depends on your Controll-Hosts capability to handle that many connections at the same time. I dont think that ansible would be the bottleneck here but the saturation of your network.

Regards

5

Correct, Ansible is not the limit. Saltstack has guidelines around the same bottle necks for its ssh only solution.

6

Could you please share some info how to mitigate the risk of a bottleneck caused by SSH and/or the underlying network?