HEAT is Openstack’s orchestration program. It uses the template to create and manage openstack cloud resources. These templates normally called as HOT (HEAT orchestration template). The templates will help to you to provision bunch of instances, floating IPs, volumes, security groups and users in quick time. A Heat template describes the infrastructure for a cloud application in a text file in human readable format along with version control. It also provides advanced functionality, such as instance high availability, instance auto-scaling, and nested stacks. This enables OpenStack core projects to receive a larger user base. Templates are defined in YAML (Yet Another Markup Language) language.
In this article ,we will see that how to install and configure HEAT orchestration module .
Orchestration module Components:
- heat – command-line client
- heat-api
- heat-api-cfn
- heat-engine
Install and configure HEAT Orchestration :
1.Login to the controller node.
2. Create the heat database and grant the permission.
root@OSCTRL-UA:~# mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 942 Server version: 5.5.44-0ubuntu0.14.04.1 (Ubuntu) Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE DATABASE heat; Query OK, 1 row affected (0.02 sec) mysql> GRANT ALL PRIVILEGES ON heat.* TO 'heat'@'localhost' IDENTIFIED BY 'heatdb123'; Query OK, 0 rows affected (0.07 sec) mysql> GRANT ALL PRIVILEGES ON heat.* TO 'heat'@'%' IDENTIFIED BY 'heatdb123'; Query OK, 0 rows affected (0.00 sec) mysql> exit Bye root@OSCTRL-UA:~#
3. Source the admin credentials for CLI access.
root@OSCTRL-UA:~# cat admin.rc export OS_USERNAME=admin export OS_PASSWORD=admin123 export OS_TENANT_NAME=admin export OS_AUTH_URL=http://OSCTRL-UA:35357/v2.0 root@OSCTRL-UA:~# source admin.rc root@OSCTRL-UA:~#
4. Create the keystone user account.
root@OSCTRL-UA:~# keystone user-create --name heat --pass heat123 +----------+----------------------------------+ | Property | Value | +----------+----------------------------------+ | email | | | enabled | True | | id | f9e9583e6c69441cb80d556cd8b4a4da | | name | heat | | username | heat | +----------+----------------------------------+ root@OSCTRL-UA:~#
5. Add the admin role for heat user.
root@OSCTRL-UA:~# keystone user-role-add --user heat --tenant service --role admin root@OSCTRL-UA:~#
6.Create the heat_stack_owner role and add the tenant to it. We must add the heat_stack_owner role to users that manage the stacks.
root@OSCTRL-UA:~# keystone role-create --name heat_stack_owner +----------+----------------------------------+ | Property | Value | +----------+----------------------------------+ | id | 26d2886594944773abfea2e9e899c731 | | name | heat_stack_owner | +----------+----------------------------------+ root@OSCTRL-UA:~# keystone user-role-add --user lingesh --tenant lingesh --role heat_stack_owner root@OSCTRL-UA:~#
7. The Orchestration service automatically assigns the heat_stack_user role to users that it creates during stack deployment. Create the heat_stack_user role.
root@OSCTRL-UA:~# keystone role-create --name heat_stack_user +----------+----------------------------------+ | Property | Value | +----------+----------------------------------+ | id | 5de39c7ec6ac4756bacf154a50fb02b8 | | name | heat_stack_user | +----------+----------------------------------+ root@OSCTRL-UA:~#
8.Create the heat and heat-cfn service entities using keystone command.
root@OSCTRL-UA:~# keystone service-create --name heat --type orchestration --description "Orchestration" +-------------+----------------------------------+ | Property | Value | +-------------+----------------------------------+ | description | Orchestration | | enabled | True | | id | 59585bbaa4e04d2394df4a66e13993bf | | name | heat | | type | orchestration | +-------------+----------------------------------+ root@OSCTRL-UA:~# keystone service-create --name heat-cfn --type cloudformation --description "Orchestration" +-------------+----------------------------------+ | Property | Value | +-------------+----------------------------------+ | description | Orchestration | | enabled | True | | id | eefe2c1b881d431f83a5411ac7bfb20c | | name | heat-cfn | | type | cloudformation | +-------------+----------------------------------+ root@OSCTRL-UA:~#
9.Create the Orchestration HEAT service API endpoints.
root@OSCTRL-UA:~# keystone endpoint-create --service-id $(keystone service-list | awk '/ orchestration / {print $2}') --publicurl http://OSCTRL-UA:8004/v1/%\(tenant_id\)s --internalurl http://OSCTRL-UA:8004/v1/%\(tenant_id\)s --adminurl http://OSCTRL-UA:8004/v1/%\(tenant_id\)s --region regionOne
+-------------+----------------------------------------+
| Property | Value |
+-------------+----------------------------------------+
| adminurl | http://OSCTRL-UA:8004/v1/%(tenant_id)s |
| id | 75117db38ebc4868a69fc6b7e14fc054 |
| internalurl | http://OSCTRL-UA:8004/v1/%(tenant_id)s |
| publicurl | http://OSCTRL-UA:8004/v1/%(tenant_id)s |
| region | regionOne |
| service_id | 59585bbaa4e04d2394df4a66e13993bf |
+-------------+----------------------------------------+
root@OSCTRL-UA:~# keystone endpoint-create --service-id $(keystone service-list | awk '/ cloudformation / {print $2}') --publicurl http://OSCTRL-UA:8000/v1 --internalurl http://OSCTRL-UA:8000/v1 --adminurl http://OSCTRL-UA:8000/v1 --region regionOne
+-------------+----------------------------------+
| Property | Value |
+-------------+----------------------------------+
| adminurl | http://OSCTRL-UA:8000/v1 |
| id | 8a15369cd2e14aa199b4f60881169a1b |
| internalurl | http://OSCTRL-UA:8000/v1 |
| publicurl | http://OSCTRL-UA:8000/v1 |
| region | regionOne |
| service_id | eefe2c1b881d431f83a5411ac7bfb20c |
+-------------+----------------------------------+
root@OSCTRL-UA:~#
10. Install Orchestration components .
root@OSCTRL-UA:~# apt-get install heat-api heat-api-cfn heat-engine python-heatclient Reading package lists... Done Building dependency tree Reading state information... Done python-heatclient is already the newest version. python-heatclient set to manually installed. The following extra packages will be installed: docutils-common docutils-doc heat-common javascript-common libjbig0 libjs-jquery-hotkeys libjs-jquery-isonscreen libjs-jquery-metadata libjs-jquery-tablesorter liblcms2-2 libpaper-utils libpaper1 libpq5 libtiff5 libwebp5 libwebpmux1 pep8 pyflakes python-coverage python-docutils python-egenix-mxdatetime python-egenix-mxtools python-extras python-fixtures python-flake8 python-hacking python-heat python-mccabe python-mimeparse python-oslosphinx python-pil python-psycopg2 python-pygments python-roman python-sphinx python-testtools python3-pkg-resources sphinx-common sphinx-doc Suggested packages: liblcms2-utils texlive-latex-recommended texlive-latex-base texlive-lang-french fonts-linuxlibertine ttf-linux-libertine python-egenix-mxdatetime-dbg python-egenix-mxdatetime-doc python-egenix-mxtools-dbg python-egenix-mxtools-doc python-pil-doc python-pil-dbg python-psycopg2-doc ttf-bitstream-vera jsmath libjs-mathjax dvipng texlive-latex-extra texlive-fonts-recommended python-twisted python3-setuptools The following NEW packages will be installed: docutils-common docutils-doc heat-api heat-api-cfn heat-common heat-engine javascript-common libjbig0 libjs-jquery-hotkeys libjs-jquery-isonscreen libjs-jquery-metadata libjs-jquery-tablesorter liblcms2-2 libpaper-utils libpaper1 libpq5 libtiff5 libwebp5 libwebpmux1 pep8 pyflakes python-coverage python-docutils python-egenix-mxdatetime python-egenix-mxtools python-extras python-fixtures python-flake8 python-hacking python-heat python-mccabe python-mimeparse python-oslosphinx python-pil python-psycopg2 python-pygments python-roman python-sphinx python-testtools python3-pkg-resources sphinx-common sphinx-doc 0 upgraded, 42 newly installed, 0 to remove and 44 not upgraded. Need to get 5,747 kB of archives. After this operation, 28.6 MB of additional disk space will be used. Do you want to continue? [Y/n] Y
11. Edit the /etc/heat/heat.conf file and update following sections.
In [database] section,
[database] connection = mysql://heat:heatdb123@OSCTRL-UA/heat
In [DEFAULT] section,
[DEFAULT] rpc_backend = rabbit rabbit_host = OSCTRL-UA rabbit_password = rabbit123 heat_metadata_server_url = http://OSCTRL-UA:8000 heat_waitcondition_server_url = http://OSCTRL-UA:8000/v1/waitcondition
In [keystone_authtoken] section,
[keystone_authtoken] auth_uri = http://OSCTRL-UA:5000/v2.0 identity_uri = http://OSCTRL-UA:35357 admin_tenant_name = service admin_user = heat admin_password = heat123
In [ec2authtoken] section,
[ec2authtoken] auth_uri = http://OSCTRL-UA:5000/v2.0
12. Populate the HEAT Orchestration database .
root@OSCTRL-UA:~# su -s /bin/sh -c "heat-manage db_sync" heat root@OSCTRL-UA:~#
13. Remove the SQLlite database.
root@OSCTRL-UA:~# rm -f /var/lib/heat/heat.sqlite root@OSCTRL-UA:~#
14.Restart the HEAT Orchestration services.
root@OSCTRL-UA:~# service heat-api restart heat-api stop/waiting heat-api start/running, process 34796 root@OSCTRL-UA:~# service heat-api-cfn restart heat-api-cfn stop/waiting heat-api-cfn start/running, process 34810 root@OSCTRL-UA:~# service heat-engine restart stop: Unknown instance: heat-engine start/running, process 34825 root@OSCTRL-UA:~#
We have successfully installed and configured the HEAT Orchestration on your openstack environment.
Verify the HEAT configuration:
1. Login to the controller node.
2. Source the tenant “lingesh” credentials .
root@OSCTRL-UA:~# cat lingesh.rc export OS_USERNAME=lingesh export OS_PASSWORD=ling123 export OS_TENANT_NAME=lingesh export OS_AUTH_URL=http://OSCTRL-UA:35357/v2.0 root@OSCTRL-UA:~# source lingesh.rc root@OSCTRL-UA:~#
3. Create the YAML language template file for HEAT in the name of “uah-stack.yml”.
heat_template_version: 2014-10-16
description: simple tiny server
parameters:
ImageID:
type: string
description: Image use to boot a server
NetID:
type: string
description: Network ID for the server
resources:
server:
type: OS::Nova::Server
properties:
image: { get_param: ImageID }
flavor: m1.tiny
networks:
- network: { get_param: NetID }
outputs:
private_ip:
description: IP address of the server in the private network
value: { get_attr: [ server, first_address ] }
4. List the available network.
root@OSCTRL-UA:~# nova net-list +--------------------------------------+-------------+------+ | ID | Label | CIDR | +--------------------------------------+-------------+------+ | 1c233704-4067-44ce-bc8c-eb1964c4a74a | ext-net | None | | 58ee8851-06c3-40f3-91ca-b6d7cff609a5 | lingesh-net | None | +--------------------------------------+-------------+------+ root@OSCTRL-UA:~#
5. List the available glance images.
root@OSCTRL-UA:~# glance image-list +--------------------------------------+---------------------+-------------+------------------+----------+--------+ | ID | Name | Disk Format | Container Format | Size | Status | +--------------------------------------+---------------------+-------------+------------------+----------+--------+ | 7d19b639-6950-42dc-a64d-91c6662e0613 | CirrOS 0.3.0 | qcow2 | bare | 9761280 | active | | 95fafce7-ae0f-47e3-b1c9-5d2ebd1af885 | CirrOS-0.3.4-x86_64 | qcow2 | bare | 13287936 | active | +--------------------------------------+---------------------+-------------+------------------+----------+--------+ root@OSCTRL-UA:~#
6.Create the NET_ID variable with available network.
root@OSCTRL-UA:~# NET_ID=$(nova net-list | awk '/ lingesh-net / { print $2 }')
root@OSCTRL-UA:~#
7.Create the stack from template.
root@OSCTRL-UA:~# heat stack-create -f uah-stack.yml -P "ImageID=CirrOS-0.3.4-x86_64;NetID=$NET_ID" uhnstack +--------------------------------------+------------+--------------------+----------------------+ | id | stack_name | stack_status | creation_time | +--------------------------------------+------------+--------------------+----------------------+ | 5e66777c-ea0a-4d5a-adff-f500bd718fae | uhnstack | CREATE_IN_PROGRESS | 2015-10-22T12:04:58Z | +--------------------------------------+------------+--------------------+----------------------+ root@OSCTRL-UA:~#
8.Verify the stack create progress.
root@OSCTRL-UA:~# heat stack-list +--------------------------------------+------------+-----------------+----------------------+ | id | stack_name | stack_status | creation_time | +--------------------------------------+------------+-----------------+----------------------+ | 5e66777c-ea0a-4d5a-adff-f500bd718fae | uhnstack | CREATE_COMPLETE | 2015-10-22T12:04:58Z | +--------------------------------------+------------+-----------------+----------------------+ root@OSCTRL-UA:~#
9.In the back-end, instance will be launched.
root@OSCTRL-UA:~# nova list +--------------------------------------+------------------------------+--------+------------+-------------+-------------------------+ | ID | Name | Status | Task State | Power State | Networks | +--------------------------------------+------------------------------+--------+------------+-------------+-------------------------+ | 863cc74a-49fd-4843-83c8-bc9597cae2ff | uhnstack-server-udq3chnqb6t2 | ACTIVE | - | Running | lingesh-net=192.168.4.6 | +--------------------------------------+------------------------------+--------+------------+-------------+-------------------------+ root@OSCTRL-UA:~#
Using HEAT, we can also create the auto-scaling stack where the instacne will be turned on based on the resource utilization. Here is the sample auto-scaling template.
heat_template_version: 2014-10-16
description: A simple auto scaling group.
resources:
group:
type: OS::Heat::AutoScalingGroup
properties:
cooldown: 60
desired_capacity: 2
max_size: 5
min_size: 1
resource:
type: OS::Nova::Server::Cirros
scaleup_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: group }
cooldown: 60
scaling_adjustment: 1
cpu_alarm_high:
type: OS::Ceilometer::Alarm
properties:
meter_name: cpu_util
statistic: avg
period: 60
evaluation_periods: 1
threshold: 50
alarm_actions:
- {get_attr: [scaleup_policy, alarm_url]}
comparison_operator: gt
You can download many heat templates from https://github.com/openstack/heat-templates
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