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Minimal OpenStack LinuxCon NA 2015
This document provides guidance on setting up a minimal OpenStack cloud in one's basement for learning and experimenting purposes. It recommends starting with only the core services like Nova, Glance, and Keystone. Example steps are given to install OpenStack on a single node, create a security group to allow SSH, boot an Ubuntu image as a test server, and connect via SSH. Advanced networking with Neutron is not required initially. The document also outlines some additional OpenStack services that can be added later to expand the cloud once the core is established.
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Minimal OpenStack LinuxCon NA 2015
- 1. MinimalOpenStack StartingYourOpenStackJourney Sean Dague /Aug 19th , 2015 Twitter: @sdague Blog: dague.net
- 2. The Mission ofOpenStack "To produce the ubiquitous Open Source Cloud Computing platform that will meet the needs of public and private clouds regardless of size, by being simple to implement and massively scalable."
- 3. Things you probablydon't need in your basement ● Hadoop as a Service ● DNS manager ● Object storage layer ● Chargeback ● Integration with Enterprise Storage ● SDN Integration ● Policy Enforcement ● Orchestration Layer ● Kubernetes deployer But, you can layer them in later once you have a Minimal OpenStack
- 4. My First OpenStack 1Intel/AMD CPU 8 GB Ram 250+ GB Disk 1 Gbs Network Read OpenStack Install Guide Follow sections 2, 3, 4, 5 and 6.2 for your favorite distro For multiple servings follow sections 5 and 6.2 again Makes 1 compute cloud. Good for long running or ephermeral VMs. Variations: * Increase RAM for more guests 2 hrs 4
- 5. 2 – 3hours process Read Carefully! "Create Exclusive Slice"
- 6. Caveat on Networking NovaNetwork ● Original Networking ● Easy to set up ● Limited API Neutron ● New Network Stack ● More network centric API ● Allows Tenant Self Service Networking ● Long Term Direction for OpenStack My Current Recommendation (based on Kilo documentation): Start with Nova Network to get comfortable Rebuild with Neutron later if your intent is to expand substantially Liberty documentation should make Neutron base easier to get started with
- 7. Nova Network Multihost 10.64.0.0/24 Controller+ Worker Worker .2 .2 .4 .7.5.6 Router .1 dnsmasq dnsmasq messages back and forth to prevent collisions Linux Bridge Linux Bridge
- 8. Cheating and Sharingan L2 10.64.0.0/24 Controller + Worker Worker .129/25 .129/25 .132 .133.131.130 Router .1 dnsmasq dnsmasq messages back and forth to prevent collisions Linux Bridge Linux Bridge 10.64.0.128/25 .51/24.50/24 Through the magic of Linux Networking
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- 10. A 2 nodebasement cloud Keystone mysql rabbitmq/disk Glance Nova /disk Nova Controller + Worker Worker Only
- 12. Compute Flow Persistent Disk EphemeralDisk Built from disk on first boot. Exists until destroy. Freshly created on every boot. Common Actions: ● create/delete ● start/stop ● resize ● snapshot ● locking clout-init: typically shipped in cloud images customizes on first boot Metadata Server Config Drive First Boot Like "T-Shirt Sizes" Each defines CPU, Mem, Disk, and other attrs of final VM Base Image Flavor
- 13. OpenStack Client ribos:~> moredemo-openrc.sh export OS_PROJECT_DOMAIN_ID=default export OS_USER_DOMAIN_ID=default export OS_PROJECT_NAME=demo export OS_TENANT_NAME=demo export OS_USERNAME=demo export OS_PASSWORD=0penstack export OS_AUTH_URL=http://10.42.0.51:5000/v3 export OS_REGION_NAME=RegionOne ● Unified openstack cli ● Replaces most of nova/keystone/glance cli usage ● Far more consistent in experience ● Installable via apt/yum/pip ● Put it on your laptop ● Access any OpenStack via setting env variables
- 14. Your first OpenStack >source admin-openrc.sh # credentials > openstack image create --copy-from https://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img --public trusty # image available to all users > source demo-openrc.sh # drop back to normal user > openstack security group rule create --proto icmp --src-ip 0.0.0.0/0 --dst-port -1 default > openstack security group rule create --proto tcp --src-ip 0.0.0.0/0 --dst-port 22 default # sshable security group out of the box > openstack keypair create –public-key .ssh/id_rsa.pub my_sshkey # add a keypair so you can ssh to servers > openstack server create --flavor m1.medium --image trusty --keypair my_sshkey server1 --wait # boot your first server, wait until done > ssh ubuntu@{IP} # profit!
- 15. Getting an Image KeystoneOpenStackClient User + Project + Password Token POST /images Token Glance HTTP Pull
- 16. Your first OpenStack >source admin-openrc.sh # credentials > openstack image create --copy-from https://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img --public trusty # image available to all users > source demo-openrc.sh # drop back to normal user > openstack security group rule create --proto icmp --src-ip 0.0.0.0/0 --dst-port -1 default > openstack security group rule create --proto tcp --src-ip 0.0.0.0/0 --dst-port 22 default # sshable security group out of the box > openstack keypair create –public-key .ssh/id_rsa.pub my_sshkey # add a keypair so you can ssh to servers > openstack server create --flavor m1.medium --image trusty --keypair my_sshkey server1 --wait # boot your first server, wait until done > ssh ubuntu@{IP} # profit!
- 17. Security Groups 10.64.0.0/24 Controller +Worker .2 .5.6 Router .1 dnsmasq Linux Bridge Default host level firewall preventing all inbound
- 18. Your first OpenStack >source admin-openrc.sh # credentials > openstack image create --copy-from https://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img --public trusty # image available to all users > source demo-openrc.sh # drop back to normal user > openstack security group rule create --proto icmp --src-ip 0.0.0.0/0 --dst-port -1 default > openstack security group rule create --proto tcp --src-ip 0.0.0.0/0 --dst-port 22 default # sshable security group out of the box > openstack keypair create –public-key .ssh/id_rsa.pub my_sshkey # add a keypair so you can ssh to servers > openstack server create --flavor m1.medium --image trusty --keypair my_sshkey server1 --wait # boot your first server, wait until done > ssh ubuntu@{IP} # profit!
- 19. Booting a Server KeystoneOpenStackClient User + Project + Password Token POST /servers Token Nova API Glance Nova Conductor Nova Sched Nova Compute HTTP Pull libvirt your compute!
- 20. User Organization inOpenStack Domain 2 Tenant 1 10 vcpu 8 GB mem 24 GB mem Domain 1 Project 1 10 vcpu 8 GB mem Project 2 30 vcpu 24 GB mem Projects: ● contain quota Users: ● credentials Roles Domains: … you don't need those in your basement *Project == Tenant
- 21. But I don'tlike the command line! ● No problem! ● Setting up Horizon is Section 7 ● Easy to use Web UI
- 23.
- 25. Additional Features –Leveling up ● Horizon ● Web UI for OpenStack ● Talks to all components over published REST interfaces ● Swift – Object Store ● REST API for storing / fetching objects of arbitrary size* ● Built in redundancy model ● Can be used as a backend for Glance, ownCloud, other Open Source systems ● Neutron – Advanced Networking ● Tenant self service networks ● API and concepts model networking concepts ● Ports ● Subnets ● Routers ● Advanced network services such as: ● Load Balancing ● VPN ● Network Firewall ● Plugins for Linux Bridge and OVS and many SDNs ● Cinder – Persistent Block Storage ● Additional block devices which survive longer than VMs ● Typical use for Database backends ● Ceilometer ● Usage and Metric Collection ● Ironic ● Adds bare metal support to Nova ● Designate ● DNS manager, reacts to Nova / Neutron events
- 26. A selection ofadditional services ● Heat ● Orchestrates "stack" of OpenStack resources ● Trove ● MySQL db as a service on top of OpenStack ● Sahara ● Hadoop as a service on top of OpenStack ● Cue ● RabbitMQ as a service on top of OpenStack ● Zaqar ● Simple Queue Service ● Magnum ● Kuberneties / Container management ● Manila ● Shared filesystem management ● Barbican ● Key store management ● Murano ● Application catalog for easy to deploy OpenStack "apps" And more coming every day!
- 27. Thanks! Layer 1: BaseCompute Infrastructure Layer 2: Extended Infrastructure Layer 3: Optional Enhancements Layer 4: Consumption Services Nova Glance Keystone Ceilometer Horizon Heat Trove Sahara Compute Image Bare MetalNetworking DNS Cinder Swift ObjectBlock Storage Services Compute ServicesNetwork Services Identity Telemetry Dashboard Key Management Orchestration Database Hadoop Queues http://hackstack.org/x/blog/2013/09/05/openstack-seven-layer-dip-as-a-service/ Zaqar Barbican Neutron Designate Ironic Containers MagnumManila Filesystems Questions?