OpenStack Ozer

Thursday, 28 August 2014

Why does the small business need cloud?

1. Saving cost for IT infrastructure
2. Quick installation and deployment
3. High performance expedition
4. Fault tolerance and disaster recovery ability
5. Fast internet access ability

Monday, 18 August 2014

Manually setup all-in-one OpenStack Icehouse 3 - keystoneGlance (Image Store)

1. package installation

apt-get install -y glance

2. Create database and credentials for Glance

In MySQL command prompt:

CREATE DATABASE glance;

GRANT ALL ON glance.* TO 'glance'@'%' IDENTIFIED BY 'glance_dbpass';

3. Create glance related keystone entries

keystone user-create --name=glance --pass=glance_pass --email=glance@example.com

keystone user-role-add --user=glance --tenant=service --role=admin

keystone service-create --name=glance --type=image --description="Glance Image Service"

keystone endpoint-create --service=glance --publicurl=http://192.168.139.111:9292 --internalurl=http://192.168.139.111:9292 --adminurl=http://192.168.139.111:9292

4. Edit /etc/glance/glance-api.conf and edit the following lines

Hash out

# sqlite_db = /var/lib/glance/glance.sqlite

Add

connection = mysql://glance:glance_dbpass@192.168.139.111/glance

[keystone_authtoken]

auth_host = 192.168.139.111

auth_port = 5000

auth_protocol = http

admin_tenant_name = service

admin_user = glance

admin_password = glance_pass

[paste_deploy]

flavor = keystone

Edit /etc/glance/glance-registry.conf and edit the following lines as below

Hash out

# sqlite_db = /var/lib/glance/glance.sqlite

Add

connection = mysql://glance:glance_dbpass@192.168.139.111/glance

[keystone_authtoken]

auth_host = 192.168.139.111

auth_port = 5000

auth_protocol = http

admin_tenant_name = service

admin_user = glance

admin_password = glance_pass

[paste_deploy]

flavor = keystone

5. Restart Glance services and sync the database

service glance-api restart

service glance-registry restart

glance-manage db_sync

6.Download a pre-bundled image for testing

glance image-create --name Cirros --is-public true --container-format bare --disk-format qcow2 --location https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-disk.img

7. testing

glance index

Manually setup all-in-one OpenStack Icehouse 2 - keystone

1. install the keystone package/service

commands: apt-get install -y keystone

2. create database and username/password

in mysql client tool:

mysql> CREATE DATABASE keystone;

mysql> GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' IDENTIFIED BY 'keystone_dbpass';

3. update keystone configuration file

in /etc/keystone/keystone.conf

hash out line

connection = sqlite:////var/lib/keystone/keystone.db

add line:

connection = mysql://keystone:keystone_dbpass@192.168.139.111/keystone

4. restart keystone service and sync database

service keystone restart

keystone-manage db_sync

5. export the environment variables

export OS_SERVICE_TOKEN=ADMIN

export OS_SERVICE_ENDPOINT=http://192.168.139.111:35357/v2.0

6. data preparation(well explain later)

#tenant, user, role and user-role

keystone tenant-create --name=admin --description="Admin Tenant"

keystone tenant-create --name=service --description="Service Tenant"

keystone user-create --name=admin --pass=ADMIN --email=admin@example.com

keystone role-create --name=admin

keystone user-role-add --user=admin --tenant=admin --role=admin

#service

keystone service-create --name=keystone --type=identity --description="Keystone Identity Service"

#end point

keystone endpoint-create --service=keystone --publicurl=http://192.168.139.111:5000/v2.0 --internalurl=http://192.168.139.111:5000/v2.0 --adminurl=http://192.168.139.111:35357/v2.0

7. create confidential file and source it

export OS_USERNAME=admin

export OS_PASSWORD=ADMIN

export OS_TENANT_NAME=admin

export OS_AUTH_URL=http://192.168.139.111:35357/v2.0

8. testing

keystone token-get

keystone user-list

Wednesday, 13 August 2014

Manually setup all-in-one OpenStack Icehouse 1 - preparation

DevStack is a cool tool to setup all-in-one OpenStack environment but it hides most of the details. To better understand how the each component of OpenStack is setup. here I tried to setup OpenStack Icehouse on the Ubuntu 14.4 manully following this blog

http://fosskb.wordpress.com/2014/04/12/openstack-icehouse-on-ubuntu-12-04-lts-single-machine-setup/. My IP is 192.168.139.111

Setup/update the environment for OpenStack Icehouse

Configure the repositories and update the packages.

Commands:

apt-get install -y python-software-properties -- this is to setup python environment

add-apt-repository cloud-archive:icehouse -- this is to setup the icehouse repository
apt-get install -y ntp vlan bridge-utils -- this is to setup ntp vlan and other network utils

apt-get update && apt-get -y upgrade -- this is to update the packages and kernel

reboot -- reboot the server

Setup RabbitMQ server, it seems no configuration for RabbitMQ

Commands:

apt-get install -y rabbitmq-server -- install rabbitmq server

Setup MySQL server, configure the my.cnf and restart MySQL

Commands:

apt-get install -y mysql-server python-mysqldb

edit the /etc/mysql/my.cnf file

add or modify the below configuration

[mysqld]

bind-address = 0.0.0.0 -- listen on all IPs

collation-server = utf8_general_ci -- setup collation

init-connect = 'SET NAMES utf8' -- characterset setting

character-set-server = utf8 -- characterset setting

restart the MySQL

service mysql restart -- restart MySQL

enable the kernel parameters in /etc/sysctl.conf

net.ipv4.ip_forward=1
net.ipv4.conf.all.rp_filter=0
net.ipv4.conf.default.rp_filter=0

Tuesday, 12 August 2014

Storage in Cloud

File System is a critical part in OS as it contains both OS, application binaries as well as application data. In traditional OS, it is usually on a hard disk or SAN attached disk. In cloud, there are more types of storage available.

Object Storage(examples: OpenStack swift, Amazon S3, Rackspace Cloud Files, Ceph Storage)

Object storage is the technology that store the files in ‘cloud’, usually the client can have access/modify to the file via HTTP interface(RESTful API), Application can build up file-level access based on object storage.

Block Storage(examples: nova-volume, Amazon ESB, iSCSI)

Block device is very similar to the SAN storage, it exposed through a low-level computer bus interface which can be accessed over the network. The OS can create partitions and format the partitions to make the file system. the block Storage can usually only be attached to just one virtual server.

File Storage(examples: NFS, CIFS, ClusterFS)

File Storage is quite similar to NAS, client access data through OS’s file system level. Users access it by mouting a remote file system. usually the client need to install some software to remote access it.

Setup All-in-One OpenStack environment by using devstack

As OpenStack is a complicated software suit, it is not very easy to deploy OpenStack for beginners. Devstack is a very handy tool to deploy all-in-one openstack environment

1. the box is installed with the ubuntu 14.4, the user is called stack

2. update the system and packages

command: #sudo apt-get dist-upgrade

then reboot the machine

3. make the /opt/stack world wide readable

commands:

#sudo chown -R stack:strack /opt/stack

#sudo chmod 777 /opt/stack

4. install git

#sudo apt-getinstall git

5. download openstack and checkout the Icehouse version

#sudo git clone https://github.com/openstack-dev/devstack.git

#sudo git checkout -b icehouseorigin/stable/icehouse

6. upload the localrc configuration template

it should be in ~/devstack/

7. deploy openstack

./stack.sh

After it is running for about 1 hour, you will have a full-in-one OpenStack environment

Sunday, 10 August 2014

Create an VM in OpenStack

This is the basic workflow to create a VM in OpenStack

from http://www.slideshare.net/mirantis/openstack-cloud-request-flow