Open Stack

Hi all,
I'm trying to fix issues of spawning zombie processes for Cinder and Nova APIs during instantiation in an IaC (Ansible which is not openstack-ansible).
Does someone can kindly help me to solve the issue or give me some clues like parameter changes that can be expected to be effective?

- Issues
The cinder api service process(port: 8776) existed in a zombie state.
The neutron api service process(port: 9696) required for nova existed in a zombie state.

- What the IaC does
Use an existing tenant to create a network and subnet, then use 8volumes to instantiate 8VMs.

- Workarounds and what I've done so far
Identify and kill zombie processes.

- Environment
OS: CentOS Stream 8
Kernel: 4.18.0-408.el8.x86_64
OpenStack: Yoga(Deployed by PackStack: https://www.rdoproject.org/install/packstack/)
Nova: 25.0.1
Neutron: 20.2.0
Cinder: 20.0.1
KeyStone: 21.0.0

--
Yukihiro Kishimoto
Technologist
KDDI Co., Ltd.
Tokyo Japan