[install] Add launch an instance section
Add documentation to create a basic Docker Swarm cluster and create a container. Change-Id: I43c7701fbd55153e0e36a915efed802dd1fe5ea4 Partially-Implements: blueprint magnum-installation-guide
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Spyros Trigazis
Hongbin Lu
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@ -8,6 +8,7 @@ Container Infrastructure Management service
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get_started.rst
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install.rst
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verify.rst
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launch-instance.rst
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next-steps.rst
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The Container Infrastructure Management service codenamed (magnum) is an
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213
install-guide/source/launch-instance.rst
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213
install-guide/source/launch-instance.rst
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@ -0,0 +1,213 @@
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.. _launch-instance:
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Launch an instance
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~~~~~~~~~~~~~~~~~~
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In environments that include the Container Infrastructure Management
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service, you can provision container clusters made up of virtual machines
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or baremetal servers. Then, you can use the appropriate COE client or
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endpoint to create containers.
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Provision a cluster and create a container
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------------------------------------------
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The Container Infrastructure Management service uses `Cluster Templates
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<http://docs.openstack.org/developer/magnum/userguide.html
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#clustertemplate>`__ to describe how a `Cluster <http://docs.openstack.org/
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developer/magnum/userguide.html#cluster>`__ is constructed. Following this
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example, you will provision a Docker Swarm cluster with one master
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and one node. Then, using docker's native API you will create a container.
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#. Download the latest Fedora Atomic image built by magnum team, which is
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required to provision the cluster:
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.. code-block:: console
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$ wget https://fedorapeople.org/groups/magnum/fedora-atomic-latest.qcow2
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#. Source the ``demo`` credentials to perform
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the following steps as a non-administrative project:
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.. code-block:: console
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$ . demo-openrc
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#. Register the image to the Image service setting the ``os_distro`` property
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to ``fedora-atomic``:
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.. code-block:: console
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$ openstack image create \
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--disk-format=qcow2 \
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--container-format=bare \
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--file=fedora-atomic-latest.qcow2 \
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--property os_distro='fedora-atomic' \
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fedora-atomic-latest
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+------------------+------------------------------------------------------+
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| Field | Value |
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+------------------+------------------------------------------------------+
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| checksum | a987b691e23dce54c03d7a57c104b195 |
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| container_format | bare |
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| created_at | 2016-09-14T12:58:01Z |
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| disk_format | qcow2 |
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| file | /v2/images/81b25935-3400-441a-9f2e-f984a46c89dd/file |
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| id | 81b25935-3400-441a-9f2e-f984a46c89dd |
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| min_disk | 0 |
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| min_ram | 0 |
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| name | fedora-atomic-latest |
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| owner | c4b42942156741dfbc4775dbcb032841 |
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| properties | os_distro='fedora-atomic' |
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| protected | False |
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| schema | /v2/schemas/image |
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| size | 507928064 |
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| status | active |
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| tags | |
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| updated_at | 2016-09-14T12:58:03Z |
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| virtual_size | None |
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| visibility | private |
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+------------------+------------------------------------------------------+
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#. Create a keypair on the Compute service:
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.. code-block:: console
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$ openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey
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+-------------+-------------------------------------------------+
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| Field | Value |
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+-------------+-------------------------------------------------+
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| fingerprint | 05:be:32:07:58:a7:e8:0b:05:9b:81:6d:80:9a:4e:b1 |
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| name | mykey |
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| user_id | 2d4398dbd5274707bf100a9dbbe85819 |
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+-------------+-------------------------------------------------+
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#. Create a cluster template for a Docker Swarm cluster using the above image,
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``m1.small`` as flavor for the master and the node, ``mykey`` as keypair,
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``public`` as external network and ``8.8.8.8`` for DNS nameserver, with the
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following command:
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.. code-block:: console
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$ magnum cluster-template-create --name swarm-cluster-template \
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--image-id fedora-atomic-latest \
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--keypair-id mykey \
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--external-network-id public \
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--dns-nameserver 8.8.8.8 \
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--master-flavor-id m1.small \
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--flavor-id m1.small \
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--coe swarm
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+-----------------------+--------------------------------------+
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| Property | Value |
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+-----------------------+--------------------------------------+
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| insecure_registry | - |
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| labels | {} |
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| updated_at | - |
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| floating_ip_enabled | True |
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| fixed_subnet | - |
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| master_flavor_id | m1.small |
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| uuid | 47c6ce77-50ae-43bd-8e2a-06980392693d |
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| no_proxy | - |
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| https_proxy | - |
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| tls_disabled | False |
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| keypair_id | mykey |
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| public | False |
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| http_proxy | - |
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| docker_volume_size | - |
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| server_type | vm |
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| external_network_id | public |
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| cluster_distro | fedora-atomic |
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| image_id | fedora-atomic-latest |
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| volume_driver | - |
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| registry_enabled | False |
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| docker_storage_driver | devicemapper |
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| apiserver_port | - |
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| name | swarm-cluster-template |
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| created_at | 2016-09-14T13:05:11+00:00 |
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| network_driver | docker |
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| fixed_network | - |
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| coe | swarm |
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| flavor_id | m1.small |
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| master_lb_enabled | False |
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| dns_nameserver | 8.8.8.8 |
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+-----------------------+--------------------------------------+
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#. Create a cluster with one node and one master with the following command:
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.. code-block:: console
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$ magnum cluster-create --name swarm-cluster \
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--cluster-template swarm-cluster-template \
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--master-count 1 \
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--node-count 1
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Request to create cluster 2582f192-480e-4329-ac05-32a8e5b1166b has been accepted.
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Your cluster is now being created. Creation time depends on your
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infrastructure's performance. You can check the status of you cluster
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using the commands: ``magnum cluster-list`` or
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``magnum cluster-show swarm-cluster``.
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.. code-block:: console
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$ magnum cluster-list
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+--------------------------------------+---------------+------------+--------------+-----------------+
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| uuid | name | node_count | master_count | status |
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+--------------------------------------+---------------+------------+--------------+-----------------+
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| 2582f192-480e-4329-ac05-32a8e5b1166b | swarm-cluster | 1 | 1 | CREATE_COMPLETE |
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+--------------------------------------+---------------+------------+--------------+-----------------+
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.. code-block:: console
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$ magnum cluster-show swarm-cluster
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+---------------------+------------------------------------------------------------+
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| Property | Value |
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+---------------------+------------------------------------------------------------+
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| status | CREATE_COMPLETE |
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| cluster_template_id | 47c6ce77-50ae-43bd-8e2a-06980392693d |
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| uuid | 2582f192-480e-4329-ac05-32a8e5b1166b |
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| stack_id | 3d7bbf1c-49bd-4930-84e0-ab71ba200687 |
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| status_reason | Stack CREATE completed successfully |
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| created_at | 2016-09-14T13:36:54+00:00 |
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| name | swarm-cluster |
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| updated_at | 2016-09-14T13:38:08+00:00 |
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| discovery_url | https://discovery.etcd.io/a5ece414689287eca62e35555512bfd5 |
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| api_address | tcp://172.24.4.10:2376 |
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| coe_version | 1.0.0 |
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| master_addresses | ['172.24.4.10'] |
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| create_timeout | 60 |
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| node_addresses | ['172.24.4.8'] |
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| master_count | 1 |
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| container_version | 1.9.1 |
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| node_count | 1 |
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+---------------------+------------------------------------------------------------+
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#. Add the credentials of the above cluster to your environment:
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.. code-block:: console
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$ mkdir myclusterconfig
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$ $(magnum cluster-config swarm-cluster --dir myclusterconfig)
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The above command will save the authentication artifacts in the
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`myclusterconfig` directory and it will export the environmental
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variables: DOCKER_HOST, DOCKER_CERT_PATH and DOCKER_TLS_VERIFY.
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Sample output:
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.. code-block:: console
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export DOCKER_HOST=tcp://172.24.4.10:2376
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export DOCKER_CERT_PATH=myclusterconfig
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export DOCKER_TLS_VERIFY=True
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#. Create a container:
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.. code-block:: console
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$ docker run busybox echo "Hello from Docker!"
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Hello from Docker!
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#. Delete the cluster:
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.. code-block:: console
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$ magnum cluster-delete swarm-cluster
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Request to delete cluster swarm-cluster has been accepted.
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