Openstack

What does it mean

aodh                  Alarming service
barbican              REST API designed for the secure storage, provisioning and management of secrets such as passwords, encryption keys and X.509
cinder                OpenStack Block Storage
gnocchi               Time Series Database as a Service
glance                OpenStack Image Service
heat                  Deploy instances, volumes and other OpenStack services using YAML based templates.
horizon               Openstack’s Dashboard, which provides a web based user interface to OpenStack services
ironic                bootstrap
keystone              identity service 
magnum                container orchestration engines
mistral               workflow service
neutron               networking as a service
nfv                   Network functions virtualization
nova                  cloud computing instance controller, provision compute instances (aka virtual servers).
octavia               Load balancer. Octavia HAProxy Amphora API
swift                 OpenStack Object Storage
tacker                NFV Orchestration
trove                 Database as a Service
Zaqar                 multi-tenant cloud messaging service

bash completion

. <(openstack complete 2>/dev/null )

flavor

Which machine types exist.

gp      "General purpose" Well rounded combination of amount of CPUs and the amount of RAM.
hm      "High memory" Optimimzed for applications that need a lot of memory.
hp      "High performance" High frequenzy cpu.

list volumes

openstack volume list

install openstack

dnf install python3-openstackclient

get ip addresses of all host

openstack server  list -c Networks -f json | jq -r '.[].Networks[][]'

output

-f csv,json,table,value,yaml

Get output without headers.

openstack server list -f value

list all

openstack command list -f yaml | grep - | grep list | sed 's/^  - /openstack /g' |grep -v "openstack command list" | while read i ; do echo '*' $i ; $i 2>&1 ; done | tee /tmp/openstack_list_resources.${OS_CLOUD}

How to reach nodes

OPENSTACK=$(openstack server  list -c Networks -f json | jq -r '.[].Networks[][]') ; OPENSTACK_JUMP=$(grep 185 <<< "${OPENSTACK}") ; NODES=$(grep -v 185 <<< "${OPENSTACK}") ; for NODE in ${NODES} ; do echo ssh -J core@${OPENSTACK_JUMP} core@${NODE} ; done

create server

openstack server create --flavor gp.1x2 --availability-zone europe-se-1a --image fedora-37-x86_64 --boot-from-volume 100 --network abjorklund-01-5tsbc-openshift --security-group ssh_allow --key-name abjorklund_ed25519 abjorklund_$(date_file)

With setting password.

cat << EOF > user-data
#cloud-config
password: Password123!
chpasswd: {expire: False}
ssh_pwauth: True
EOF
openstack server create --flavor gp.1x2 --availability-zone europe-se-1a --image rocky-8-x86_64 --boot-from-volume 30 --network abjorklund-01-bmc7w-openshift --security-group ssh_allow --key-name abjorklund_ed25519 abjorklund_$(date_file) --user-data user-data

get router ip

List routers

openstack router list

Get external ip.

openstack router show abjorklund-01-5tsbc-external-router -c external_gateway_info -f json | jq '.external_gateway_info.external_fixed_ips[0].ip_address'
185.102.213.238

Download image

Get info about image.

openstack image list | grep -i nord-ic-
| 98c03b69-4ba8-4276-8695-b6c3f006cf20 | nord-ic-bc84t-rhcos            | active |
glance image-download --file nord-ic-bc84t-rhcos --progress 98c03b69-4ba8-4276-8695-b6c3f006cf20

Upload image

openstack image create --disk-format qcow2 --container-format bare --public --file CentOS-7-x86_64-GenericCloud-1503.qcow2  CentOS_7_Cloud_IMG

security

Get security groups.

openstack security group list -c Name -f json | jq -r '.[].Name'

Get all security groups with rules.

openstack security group list -c Name -f value | while read SECURITY ; do openstack security group show "$SECURITY" ; done > /temp/${OS_CLOUD##*/}}_openstack_security_group_list_openstack_security_group_show.$(date_file).log

Get rules from one security group

openstack security group rule list <group>

Add rule to allow traffic from ip.

openstack security group rule create --proto tcp --dst-port 6443 --remote-ip 185.53.164.10/32 --ingress <group>

Allow nfs4 traffic

# List group to add too.
openstack security group list | grep rw-core
openstack security group rule create --proto tcp --dst-port 2049 --remote-ip 10.2.0.0/16 rw-core-p9dq6-master

create block device

openstack volume create --size 50 --type ssd --description "nfs storage block device 0" nfs_storage_abjorklund-01

Resize block device.

os volume set --size 60 nfs_storage_abjorklund-01 --os-volume-api-version 3.42

set physical ip on host

openstack port list

manage loadbalancer aurora/haproxy

openstack loadbalancer
openstack loadbalancer list
openstack loadbalancer show test-lb -c listeners -f value

view limits

If you have problems to create something in openstack it could be worth verifying you are within limits.

openstack limits show --absolute -f value | grep -E 'RAM|Cores'