OpenStack — Operations¶

Scope

Production deployment patterns, operational procedures, performance tuning, and troubleshooting for OpenStack.

Deployment¶

DevStack (Development)¶

git clone https://opendev.org/openstack/devstack
cd devstack
cp samples/local.conf .
./stack.sh

Production (Kolla-Ansible)¶

pip install kolla-ansible
kolla-ansible install-deps
kolla-ansible -i multinode bootstrap-servers
kolla-ansible -i multinode deploy

Service Operations¶

# Identity (Keystone)
openstack token issue
openstack project list
openstack user list

# Compute (Nova)
openstack server create --flavor m1.small --image ubuntu --network private myvm
openstack server list

# Networking (Neutron)
openstack network create private
openstack subnet create --network private --subnet-range 10.0.0.0/24 private-subnet
openstack router create router1

Performance Tuning¶

Component	Parameter	Recommendation
Nova	`cpu_allocation_ratio`	4:1 (default 16:1 is aggressive)
Nova	`ram_allocation_ratio`	1.5:1 (default)
Neutron	`l3_ha`	Enable for router HA
Cinder	`rbd_pool`	Ceph pool for block storage

Common Issues¶

Issue	Diagnosis	Fix
Service down	`openstack endpoint list`	Check service logs, restart
VM launch fails	`openstack server show <id>`	Check Nova scheduler, quotas
Network unreachable	`openstack port list`	Check security groups, DHCP
RabbitMQ cluster issues	`rabbitmqctl cluster_status`	Reset and rejoin node