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very slow cloud-config runcmd execution [closed]

asked 2017-05-22 06:58:05 -0500

AB239 gravatar image

Hello,

I have a working cloud-config but it is taking a lot of time to execute. Sometimes a simple execution of apt-get install <package> is taking 7-8 minutes even when I am installing it from a local repository server on LAN. The problem is not with fetching the files, but during installation it takes a long time.

Environment details: 1) Openstack: Newton with neutron 2) Both Compute hosts have 96 GB RAM 3) Network is 1Gbps supported.

Sample cloud-config goes like this:

#cloud-config                                                
chpasswd:                                                    
  list: |                                                    
    root:passwd                                              
  expire: False                                              
apt_upgrade: false                                           
runcmd:                                                      
# Post Installation Commands                                 
- export DEBIAN_FRONTEND=noninteractive                      
- apt-get update                                             
- apt-get install -y --force-yes --allow-unauthenticated gcc

Also I have checked during the execution, both CPU and RAM are show nothing terribly wrong. CPU just shows 40% occupancy and RAM consumption is less than 30%

Has anyone faced similar issue? What is the solution for this?

Please let me know if you need more information about this.

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Closed for the following reason the question is answered, right answer was accepted by AB239
close date 2018-03-16 02:36:23.187014

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Has anyone experienced similar problem?

AB239 gravatar imageAB239 ( 2017-07-04 01:32:22 -0500 )edit

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answered 2018-03-16 02:36:08 -0500

AB239 gravatar image

It was happening due to high DISK IO consumption on my HOSt machine which slowed down disk operations on all the VMs as well.

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Asked: 2017-05-22 06:58:05 -0500

Seen: 134 times

Last updated: Mar 16