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Magnum in RDO OpenStack Liberty

Manual installation from source code
Want to install Magnum (Containers as a Service) in an OpenStack environment based on packages from RDO project? Here are the steps to do it:
|Primary steps are the same as official Magnum guide, major differences come from DevStack or manual installations vs packages from RDO project.
Also, some of the steps are explained to show how Magnum should work, as well this guide can help you understand Magnum integration with your current environment.
I\'m not going to use Barbican service for certs management, you will see how to use Magnum without Barbican too.
  • For now, there is not RDO packages for magnum, so we are going to
    install it from source code.
  • As i know, currently magnum packages are under development and will
    be added in future OpenStack versions to RDO project packages.
    (Probably Mitaka or Newton)
Passwords used at this demo are:
  • temporal (Databases and OpenStack users)
  • guest (RabbitMQ)
IPs used are:
  • 192.168.200.208 (Service APIs)
  • 192.168.100.0/24 (External network range)
  • 10.0.0.0/24 (Tenant network range)
  • 8.8.8.8 (Google DNS server)
First we need to install some dependencies and packages needed for next steps.
sudo yum install -y gcc python-setuptools python-devel git libffi-devel openssl-devel wget
Install pip
easy_install pip
Clone Magnum source code from OpenStack git repository, ensure you use Liberty branch, if not, Magnum dependencies will break all OpenStack services dependencies and lost your current environment (Trust me, i\'m talking from my own experience)
git clone https://git.openstack.org/openstack/magnum -b stable/liberty
Move to your newly created folder and install Magnum (dependency requirements and Magnum)
cd magnum
sudo pip install -e .
Once Magnum is installed, create Magnum database and Magnum user
mysql -uroot -p
CREATE DATABASE IF NOT EXISTS magnum DEFAULT CHARACTER SET utf8;
GRANT ALL PRIVILEGES ON magnum.* TO'magnum'@'localhost' IDENTIFIED BY 'temporal';
GRANT ALL PRIVILEGES ON magnum.* TO'magnum'@'%' IDENTIFIED BY 'temporal';
Create Magnum folder and copy sample configuration files.
mkdir /etc/magnum
sudo cp etc/magnum/magnum.conf.sample /etc/magnum/magnum.conf
sudo cp etc/magnum/policy.json /etc/magnum/policy.json
Edit Magnum main configuration file
vi /etc/magnum/magnum.conf
Configure messaging backend to RabbitMQ
[DEFAULT]
​
rpc_backend = rabbit
notification_driver = messaging
Bind Magnum API port to listen on all the interfaces, you can also especify on which IP Magnum API will be listening if you are concerned about security risks.
[api]
​
host = 0.0.0.0
Configure RabbitMQ backend
[oslo_messaging_rabbit]
​
rabbit_host = 192.168.200.208
rabbit_userid = guest
rabbit_password = guest
rabbit_virtual_host = /
Set database connection
[database]
​
connection=mysql://magnum:[email protected]/magnum
Set cert_manager_type to local, this option will disable Barbican service, you will need to create a folder (We will do it in next steps)
[certificates]
​
cert_manager_type = local
As all OpenStack services, Keystone authentication is required.
  • Check what your service tenant name it is (RDO default name is
    \"services\" other installations usually use \"service\" name.
[keystone_authtoken]
​
auth_uri=http://192.168.200.208:5000/v2.0
identity_uri=http://192.168.200.208:35357
auth_strategy=keystone
admin_user=magnum
admin_password=temporal
admin_tenant_name=services
As we saw before, create local certificates folder to avoid using Barbican service. This is the step we previously commented
mkdir -p /var/lib/magnum/certificates/
Clone python-magnumclient and install it, this package will provide us commands to use Magnum
git clone https://git.openstack.org/openstack/python-magnumclient -b stable/liberty
cd python-magnumclient
sudo pip install -e .
Create Magnum user at keystone
openstack user create --password temporal magnum
Add admin role to Magnum user at tenant services
openstack role add --project services --user magnum admin
Create container service
openstack service create --name magnum --description "Magnum Container Service" container
Finally create Magnum endpoints
openstack endpoint create --region RegionOne --publicurl 'http://192.168.200.208:9511/v1' --adminurl 'http://192.168.200.208:9511/v1' --internalurl 'http://192.168.200.208:9511/v1' magnum
Sync Magnum database, this step will create Magnum tables at the database
magnum-db-manage --config-file /etc/magnum/magnum.conf upgrade
Open two terminal session and execute one command on each terminal to start both services. If you encounter any issue, logs can be found at these terminal
magnum-api --config-file /etc/magnum/magnum.conf
magnum-conductor --config-file /etc/magnum/magnum.conf
Check if Magnum service is fine
magnum service-list
+----+------------+------------------+-------+
| id | host | binary | state |
+----+------------+------------------+-------+
| 1 | controller | magnum-conductor | up |
+----+------------+------------------+-------+
Download fedora atomic image
wget https://fedorapeople.org/groups/magnum/fedora-21-atomic-5.qcow2
Create a Glance image with Atomic.qcow2 file
glance image-create --name fedora-21-atomic-5 \
--visibility public \
--disk-format qcow2 \
--os-distro fedora-atomic \
--container-format bare < fedora-21-atomic-5.qcow2
+------------------+--------------------------------------+
| Property | Value |
+------------------+--------------------------------------+
| checksum | cebefc0c21fb8567e662bf9f2d5b78b0 |
| container_format | bare |
| created_at | 2016-03-19T15:55:21Z |
| disk_format | qcow2 |
| id | 7293891d-cfba-48a9-a4db-72c29c65f681 |
| min_disk | 0 |
| min_ram | 0 |
| name | fedora-21-atomic-5 |
| os_distro | fedora-atomic |
| owner | e3cca42ed57745148e0c342a000d99e9 |
| protected | False |
| size | 891355136 |
| status | active |
| tags | [] |
| updated_at | 2016-03-19T15:55:28Z |
| virtual_size | None |
| visibility | public |
+------------------+--------------------------------------+
Create a ssh key if not exists, this command won\'t create a new ssh key if already exists
test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
Add the key to nova, mine is called egonzalez
nova keypair-add --pub-key ~/.ssh/id_rsa.pub egonzalez
| Now we are going to test our new Magnum service, you have various methods to do it. | I will use Docker Swarm method because is the simplest one for this demo purposes. Go through Magnum documentation to check other container methods as Kubernetes is.
Create a baymodel with atomic image and swarm, select a flavor with at least 10GB of disk
magnum baymodel-create --name demoswarmbaymodel \
--image-id fedora-21-atomic-5 \
--keypair-id egonzalez \
--external-network-id public \
--dns-nameserver 8.8.8.8 \
--flavor-id testflavor \
--docker-volume-size 1 \
--coe swarm
+---------------------+--------------------------------------+
| Property | Value |
+---------------------+--------------------------------------+
| http_proxy | None |
| updated_at | None |
| master_flavor_id | None |
| fixed_network | None |
| uuid | 887edbc7-0805-4796-be78-dfcddad8eb03 |
| no_proxy | None |
| https_proxy | None |
| tls_disabled | False |
| keypair_id | egonzalez |
| public | False |
| labels | {} |
| docker_volume_size | 1 |
| external_network_id | public |
| cluster_distro | fedora-atomic |
| image_id | fedora-21-atomic-5 |
| registry_enabled | False |
| apiserver_port | None |
| name | demoswarmbaymodel |
| created_at | 2016-03-19T17:22:43+00:00 |
| network_driver | None |
| ssh_authorized_key | None |
| coe | swarm |
| flavor_id | testflavor |
| dns_nameserver | 8.8.8.8 |
+---------------------+--------------------------------------+
Create a bay with the previous bay model, we are going to create one master node and one worker, specify all that apply to your environment
magnum bay-create --name demoswarmbay --baymodel demoswarmbaymodel --master-count 1 --node-count 1
+--------------------+--------------------------------------+
| Property | Value |
+--------------------+--------------------------------------+
| status | None |
| uuid | a2388916-db30-41bf-84eb-df0b65979eaf |
| status_reason | None |
| created_at | 2016-03-19T17:23:00+00:00 |
| updated_at | None |
| bay_create_timeout | 0 |
| api_address | None |
| baymodel_id | 887edbc7-0805-4796-be78-dfcddad8eb03 |
| node_count | 1 |
| node_addresses | None |
| master_count | 1 |
| discovery_url | None |
| name | demoswarmbay |
+--------------------+--------------------------------------+
Check bay status, for now it should be in CREATE_IN_PROGRESS state
magnum bay-show demoswarmbay
+--------------------+--------------------------------------+
| Property | Value |
+--------------------+--------------------------------------+
| status | CREATE_IN_PROGRESS |
| uuid | a2388916-db30-41bf-84eb-df0b65979eaf |
| status_reason | |
| created_at | 2016-03-19T17:23:00+00:00 |
| updated_at | 2016-03-19T17:23:01+00:00 |
| bay_create_timeout | 0 |
| api_address | None |
| baymodel_id | 887edbc7-0805-4796-be78-dfcddad8eb03 |
| node_count | 1 |
| node_addresses | [] |
| master_count | 1 |
| discovery_url | None |
| name | demoswarmbay |
+--------------------+--------------------------------------+
If all is going fine, nova should have two new instances(in ACTIVE state), one for the master node and second for the worker.
nova list
+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+-------------------------------------------------------------------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+-------------------------------------------------------------------------------+
| e38eb88c-bb6b-427d-a2c5-cdfe868796f0 | de-44kx2l4q4wc-0-d6j5svvjxmne-swarm_node-xafkm2jskf5j | ACTIVE | - | Running | demoswarmbay-agf6y3qnjoyw-fixed_network-g37bcmc52akv=10.0.0.4, 192.168.100.16 |
| 5acc579d-152a-4656-9eb8-e800b7ab3bcf | demoswarmbay-agf6y3qnjoyw-swarm_master-fllwhrpuabbq | ACTIVE | - | Running | demoswarmbay-agf6y3qnjoyw-fixed_network-g37bcmc52akv=10.0.0.3, 192.168.100.15 |
+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+-------------------------------------------------------------------------------+
You can see how heat stack is going
heat stack-list
+--------------------------------------+---------------------------+--------------------+---------------------+--------------+
| id | stack_name | stack_status | creation_time | updated_time |
+--------------------------------------+---------------------------+--------------------+---------------------+--------------+
| 3a64fa60-4df8-498f-aceb-a0cb8cfc0b18 | demoswarmbay-agf6y3qnjoyw | CREATE_IN_PROGRESS | 2016-03-19T17:22:59 | None |
+--------------------------------------+---------------------------+--------------------+---------------------+--------------+
We can see what tasks are executing during stack creation
heat event-list demoswarmbay-agf6y3qnjoyw
+-------------------------------------+--------------------------------------+------------------------+--------------------+---------------------+
| resource_name | id | resource_status_reason | resource_status | event_time |
+-------------------------------------+--------------------------------------+------------------------+--------------------+---------------------+
| demoswarmbay-agf6y3qnjoyw | 004c9388-b8ab-4541-ada8-99b65203e41d | Stack CREATE started | CREATE_IN_PROGRESS | 2016-03-19T17:23:01 |
| master_wait_handle | d6f0798a-bfde-4bad-9c73-e108bd101009 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:01 |
| secgroup_manager | e2e0eb08-aeeb-4290-9ad5-bd20fe243f07 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:02 |
| disable_selinux | d7290592-ab81-4d7a-b2fa-902975904a25 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:03 |
| agent_wait_handle | 65ec5553-56a4-4416-9748-bfa0ae35737a | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:03 |
| add_proxy | 46bdcff8-4606-406f-8c99-7f48adc4de57 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:03 |
| write_docker_socket | ab5402ea-44af-4433-84aa-a63256817a9a | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:04 |
| make_cert | 3b9817a5-606f-41ab-8799-b411c017f05d | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:04 |
| cfn_signal | 0add665a-3fdf-4408-ab15-76332aa326fe | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:04 |
| remove_docker_key | 94f4106e-f139-4d9f-9974-8821d04be103 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:05 |
| configure_swarm | f7e0ebd5-1893-43d1-bd29-81a7e39de0c0 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:05 |
| extrouter | a94a8f68-c237-4dbc-9513-cdbe3de1465e | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:05 |
| enable_services | c250f532-99bd-43d7-9d15-b2d3ae16567a | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:06 |
| write_docker_service | 2c9d8954-4446-4578-a871-0910e8996571 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:06 |
| cloud_init_wait_handle | 6cc51d2d-56e9-458b-a21b-bc553e0c8291 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:06 |
| fixed_network | 3125395f-c689-4481-bf01-94bb2f701993 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:07 |
| agent_wait_handle | 2db801e8-c2b5-47b0-ac16-122dba3a22d6 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| remove_docker_key | 75e2c7a6-a2ce-4026-aeeb-739c4a522f48 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| secgroup_manager | ac51a029-26c1-495a-bc13-232cfb8c1060 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| write_docker_socket | 58e08b52-a12a-43e9-b41d-071750294024 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| master_wait_handle | 3e741b76-6470-47d4-b13e-3f8f446be53c | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| cfn_signal | 96c26b4f-1e99-478e-a8e5-9dcc4486e1b3 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| enable_services | beedc358-ee72-4b34-a6b9-1b47ffc15306 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| add_proxy | caae3a07-d5f1-4eb0-8a82-02ea634f77ae | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| make_cert | 79363643-e5e4-4d1b-ad8a-5a56e1f6a8e7 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:08 |
| cloud_init_wait_handle | 0457b008-6da8-44fd-abef-cb99bd4d0518 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| configure_swarm | baf1e089-c627-4b24-a571-63b3c9c14e28 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| extrouter | 184614d9-2280-4cb4-9253-f538463dbdf4 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| write_docker_service | 80e66b4e-d40a-4243-bb27-0d2a6b68651f | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| disable_selinux | d8a64822-2571-4dcf-9da5-b3ec73e771eb | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| fixed_network | 528b0ced-23f6-4c22-8cbc-357ba0ee5bc5 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:09 |
| write_swarm_manager_failure_service | 9fa100a3-b4a9-465c-8b33-dd000cb4866a | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:10 |
| write_swarm_agent_failure_service | a7c09833-929e-4711-a3e9-39923d23b2f2 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:10 |
| fixed_subnet | 23d8b0a6-a7a3-4f71-9c18-ba6255cf071a | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:10 |
| write_swarm_master_service | d24a6099-3cad-41ce-8d4b-a7ad0661aaea | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:11 |
| fixed_subnet | 1a2b7397-1d09-4544-bb9f-985c2f64cb09 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:13 |
| write_swarm_manager_failure_service | 615a2a7a-5266-487b-bbe1-fcaa82f43243 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:13 |
| write_swarm_agent_failure_service | 3f8c54b4-6644-49a0-ad98-9bc6b4332a07 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:13 |
| write_swarm_master_service | 2f58b3c8-d1cc-4590-a328-0e775e495bcf | state changed | CREATE_COMPLETE | 2016-03-19T17:23:13 |
| extrouter_inside | f3da7f2f-643e-4f29-a00f-d2595d7faeaf | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:14 |
| swarm_master_eth0 | 1d6a510d-520c-4796-8990-aa8f7dd59757 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:16 |
| swarm_master_eth0 | 3fd85913-7399-49be-bb46-5085ff953611 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:19 |
| extrouter_inside | 33749e30-cbea-4093-b36a-94967e299002 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:19 |
| write_heat_params | 054e0af5-e3e0-4bc0-92b5-b40aeedc39ab | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:19 |
| swarm_nodes | df7af58c-8148-4b51-bd65-b0734d9051b5 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:20 |
| write_swarm_agent_service | ab1e8b1e-2837-4693-b791-e1311f85fa63 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:21 |
| swarm_master_floating | d99ffe66-cb02-4279-99dc-a1f3e2ca817c | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:22 |
| write_heat_params | 33d9999f-6c93-453d-8565-ac99db021f8f | state changed | CREATE_COMPLETE | 2016-03-19T17:23:25 |
| write_swarm_agent_service | 02a1b7f6-2660-4345-ad08-42b66ffaaad5 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:25 |
| swarm_master_floating | 8ce6ecd8-c421-4e4a-ab81-cba4b5ccedf4 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:25 |
| swarm_master_init | 3787dcc8-e644-412b-859b-63a434b9ee6c | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:26 |
| swarm_master_init | a1dd67bb-49c7-4507-8af0-7758b76b57e1 | state changed | CREATE_COMPLETE | 2016-03-19T17:23:28 |
| swarm_master | d12b915e-3087-4e17-9954-8233926b504b | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:29 |
| swarm_master | a34ad52a-def7-460b-b5b7-410000207b3e | state changed | CREATE_COMPLETE | 2016-03-19T17:23:48 |
| master_wait_condition | 0c9331a4-8ad0-46e0-bf2a-35943021a1a3 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:49 |
| cloud_init_wait_condition | de3707a0-f46a-44a9-b4b8-ff50e12cc77f | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:49 |
| agent_wait_condition | a1a810a4-9c19-4983-aaa8-e03f308c1e39 | state changed | CREATE_IN_PROGRESS | 2016-03-19T17:23:49 |
+-------------------------------------+--------------------------------------+------------------------+--------------------+---------------------+
Once all tasks are completed, we can create containers in the bay we created in previous steps.
magnum container-create --name demo-container \
--image docker.io/cirros:latest \
--bay demoswarmbay \
--command "ping -c 4 192.168.100.2"
+------------+----------------------------------------+
| Property | Value |
+------------+----------------------------------------+
| uuid | 36595858-8657-d465-3e5a-dfcddad8a238 |
| links | ... |
| bay_uuid | a2388916-db30-41bf-84eb-df0b65979eaf |
| updated_at | None |
| image | cirros |
| command | ping -c 4 192.168.100.2 |
| created_at | 2016-03-19T17:30:00+00:00 |
| name | demo-container |
+------------+----------------------------------------+
| Container is created, but not started. | Start the container
magnum container-start demo-container
Check container logs, you should see 4 pings succeed to our external router gateway.
magnum container-logs demo-container
​
PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.083 ms
64 bytes from 192.168.100.2: icmp_seq=2 ttl=64 time=0.068 ms
64 bytes from 192.168.100.2: icmp_seq=3 ttl=64 time=0.043 ms
64 bytes from 192.168.100.2: icmp_seq=4 ttl=64 time=0.099 ms
You can delete the container
magnum container-delete demo-container
While doing this demo, i missed adding branch name while cloning Magnum source code, when i installed Magnum all package dependencies where installed from master, who was Mitaka instead of Liberty, which broke my environment.
I suffered the following issues:
Issues with packages
ImportError: No module named MySQLdb
Was solved installing MySQL-python from pip instead of yum
pip install MySQL-python
Issues with policies, admin privileges weren\'t recognized by Magnum api.
PolicyNotAuthorized: magnum-service:get_all{{ bunch of stuff }} disallowed by policy
Was solved removing admin_api rule at Magnum policy.json file
vi /etc/magnum/policy.json
​
# "admin_api": "rule:context_is_admin",
| Unfortunately, nova was completely broken and it was not working at all, so i installed a new environment and added branch while cloning source code. | Next issue i found was Barbican, who was not installed, i used the steps mentioned at this post to solve this issue.
Hope this guide helps you integrating Magnum Container as a Service in OpenStack.
Regards, Eduardo Gonzalez
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