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Devstack installation issue: unknown error (http 500)

asked 2017-12-20 13:58:19 -0500

SuperBayern gravatar image

Trying to install Devstack on CentOS 7, got the error

  • 2017-12-20 19:02:07.990 | +./stack.sh:main:1304 create_flavors
  • 2017-12-20 19:02:08.020 | +lib/nova:create_flavors:1036 is_service_enabled n-api
  • 2017-12-20 19:02:08.176 | +functions-common:is_service_enabled:1908 return 0
  • 2017-12-20 19:02:08.205 | +lib/nova:create_flavors:1037 openstack --os-region-name=RegionOne flavor list
  • 2017-12-20 19:02:08.207 | +lib/nova:create_flavors:1037 grep -q ds512M
  • 2017-12-20 19:02:25.605 | Unknown Error (HTTP 500)
  • 2017-12-20 19:02:27.371 | +lib/nova:create_flavors:1039 openstack --os-region-name=RegionOne flavor create --id c1 --ram 256 --disk 0 --vcpus 1 cirros256
  • 2017-12-20 19:02:40.887 | Unknown Error (HTTP 500)
  • 2017-12-20 19:02:42.570 | +lib/nova:create_flavors:1 exit_trap

I've checked the log files, and it gave the same thing.

Any idea? Thanks in advance!

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Did you check the Nova logs? By default, you should see them with sudo journalctl -u devstack@n-*.

This is most likely not the root error. Something failed earlier, and Nova is not working correctly as a result.

Bernd Bausch gravatar imageBernd Bausch ( 2017-12-22 03:38:07 -0500 )edit
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answered 2018-02-18 00:13:57 -0500

rackerstacker gravatar image

updated 2018-02-18 00:14:34 -0500

As Bernd commented... This is not the root cause of the issue.

To find the root cause , check sudo journalctl -u devstack@n- and look for the last error that has occurred. In my case the error was AttributeError: 'module' object has no attribute 'GSSException' I removed the python-gssapi.x86_64 using the command yum remove python-gssapi.x86_64 and this issue was resolved. But another error popped up. This was due to a missing python module. ImportError: No module named pyasn1.type.univ So installed the module python-pyasn1 and python-pyasn1-modules using command yum install python-pyasn1 python-pyasn1-modules*.

After doing this, to test, I started only the nova-api (The service that threw these errors) and the service came up.

So the issue was fixed now. After this simply run the below get going ./unstack.sh and ./stack.sh

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answered 2018-02-18 00:33:15 -0500

Radhakrishnan Rk gravatar image

It is recommended to install under python virtual environment, So that you can install all dev stack packages without any package dependency issues.

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Asked: 2017-12-20 13:58:19 -0500

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Last updated: Feb 18 '18

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