Error: Could not find versioned identity endpoints when attempting to authenticate. Please check that your auth_url is correct. Internal Server Error (HTTP 500) while deploying devstack with command ./stack.sh

[Stuti Arya]

I am trying to set-up a new stack with the below commands in python 3.9.15 and Ubuntu 20.04.4 LTS

sudo su - stack
git clone https://opendev.org/openstack/devstack
cd devstack
git checkout stable/yoga
cd /opt/
chmod 755 stack
cd stack
chmod 755 devstack
cd devstack
vi local.conf

[[local|localrc]]

GIT_BASE=${GIT_BASE:-https://git.openstack.org}

ADMIN_PASSWORD=xxxx
DATABASE_PASSWORD=xxxx
RABBIT_PASSWORD=xxxx
SERVICE_PASSWORD=xxxx
HOST_IP=10.197.38.22x
#all the parameters below are optional
USE_SCREEN=TRUE

VERBOSE=True
LOG_COLOR=True

NOVA_REPO=$GIT_BASE/openstack/nova.git
NOVA_BRANCH=stable/yoga

NEUTRON_REPO=$GIT_BASE/openstack/neutron.git
NEUTRON_BRANCH=stable/yoga

HORIZON_REPO=$GIT_BASE/openstack/horizon.git
HORIZON_BRANCH=stable/yoga

GLANCE_REPO=$GIT_BASE/openstack/glance.git
GLANCE_BRANCH=stable/yoga

./stack.sh

while running last command './stack.sh' I am getting error :

Failed to discover available identity versions when contacting http://10.197.38.224/identity. Attempting to parse version from URL.
Could not find versioned identity endpoints when attempting to authenticate. Please check that your auth_url is correct. Internal Server Error (HTTP 500)
++functions-common:oscwrap:2491 return 1
+lib/keystone:create_keystone_accounts:310 admin_project=
+lib/keystone:create_keystone_accounts:1 exit_trap
+./stack.sh:exit_trap:521 local r=1
++./stack.sh:exit_trap:522 jobs -p
+./stack.sh:exit_trap:522 jobs=80759
+./stack.sh:exit_trap:525 [[ -n 80759 ]]
+./stack.sh:exit_trap:525 [[ -n '' ]]
+./stack.sh:exit_trap:531 '[' -f /tmp/tmp.d7oMMx7MH3 ']'
+./stack.sh:exit_trap:532 rm /tmp/tmp.d7oMMx7MH3
+./stack.sh:exit_trap:536 kill_spinner
+./stack.sh:kill_spinner:431 '[' '!' -z '' ']'
+./stack.sh:exit_trap:538 [[ 1 -ne 0 ]]
+./stack.sh:exit_trap:539 echo 'Error on exit'
Error on exit
+./stack.sh:exit_trap:541 type -p generate-subunit
+./stack.sh:exit_trap:542 generate-subunit 1668766307 716 fail
+./stack.sh:exit_trap:544 [[ -z /opt/stack/logs ]]
+./stack.sh:exit_trap:547 /usr/bin/python3.9 /opt/stack/devstack/tools/worlddump.py -d /opt/stack/logs
World dumping... see /opt/stack/logs/worlddump-2022-11-18-102343.txt for details
+./stack.sh:exit_trap:556 exit 1

Any help would be appreciated

[Dr. Jens Harbott (j-harbott)]

Why do you want to use python3.9 on Ubuntu 20.04? The default python version there is 3.8, we only support that. I also don't see what you did in order to switch to using python3.9, you usually would need to specify that in your local.conf file. But I really suggest to use python3.8 instead.

[Stuti Arya (sarya09)]

I want to use python3.9 as there was a requirement from the client and in order to upgrade I used below commands:

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update
sudo apt install python3.9
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.8 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.9 2
python3 --version
sudo apt remove --purge python3-apt
sudo apt autoclean
sudo apt install python3-apt
sudo apt install python3.9-distutils
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
sudo python3.9 get-pip.py

these commands helped me upgrade python to python3.9 and installed pip for the python3.9 version.

How exactly do I need to specify python3.9 local.conf file?
Have you/your team deployed devstack (./stack.sh) on Ubuntu 20.04 and Python3.9? If yes, Can you share what you did to successfully deploy the stack?

[Stuti Arya (sarya09)]

Is Python 3.9 and Ubuntu 20.4 compatible with devstack Xena/Yoga?

[Dr. Jens Harbott (j-harbott)]

As you have proven yourself, the answer is no. There are also no plans to change that. The current development target is Ubuntu 22.04 and Python 3.10.