Running Nova-Docker on OpenStack Juno (CentOS 7)

Recently Filip Krikava made a fork on github and created a Juno branch using the latest commit +Fix the problem when an image is not located in the local docker image registry ( https://github.com/fikovnik/nova-docker/commit/016cc98e2f8950ae3bf5e27912be20c52fc9e40e )
Master https://github.com/stackforge/nova-docker.git is targeting latest Nova ( Kilo release ), forked branch is supposed to work for Juno , reasonably including commits after “Merge oslo.i18n”. Posting bellow is supposed to test Juno Branch https://github.com/fikovnik/nova-docker.git

Quote ([2]) :-

The Docker driver is a hypervisor driver for Openstack Nova Compute. It was introduced with the Havana release, but lives out-of-tree for Icehouse and Juno. Being out-of-tree has allowed the driver to reach maturity and feature-parity faster than would be possible should it have remained in-tree. It is expected the driver will return to mainline Nova in the Kilo release.

This post in general follows up ([2]) with detailed instructions of nova-docker

driver install on RDO Juno (CentOS 7) ([3]).

Install required packages to install nova-dockker driver per https://wiki.openstack.org/wiki/Docker

***************************

Initial docker setup

***************************

# yum install docker-io -y
# yum install -y python-pip git
# git clone https://github.com/fikovnik/nova-docker.git
# cd nova-docker
# git branch -v -a

#  master                1ed1820 A note no firewall drivers.
remotes/origin/HEAD   -> origin/master
remotes/origin/juno   1a08ea5 Fix the problem when an image
is not located in the local docker image registry.
remotes/origin/master 1ed1820 A note no firewall drivers.
# git checkout -b juno origin/juno
# python setup.py install
# systemctl start docker
# systemctl enable docker
# chmod 660  /var/run/docker.sock
# pip install pbr
#  mkdir /etc/nova/rootwrap.d

******************************

Update nova.conf

******************************

vi /etc/nova/nova.conf

set “compute_driver = novadocker.virt.docker.DockerDriver”

************************************************

Next, create the docker.filters file:

************************************************

vi /etc/nova/rootwrap.d/docker.filters

Insert Lines

# nova-rootwrap command filters for setting up network in the docker driver

# This file should be owned by (and only-writeable by) the root user

[Filters]

# nova/virt/docker/driver.py: ‘ln’, ‘-sf’, ‘/var/run/netns/.*’

ln: CommandFilter, /bin/ln, root

*****************************************

Add line /etc/glance/glance-api.conf

*****************************************

container_formats=ami,ari,aki,bare,ovf,ova,docker

:wq

************************

Restart Services

************************

usermod -G docker nova

systemctl restart openstack-nova-compute

systemctl status openstack-nova-compute

systemctl restart openstack-glance-api

******************************

Verification docker install

******************************

[root@juno ~]# docker run -i -t fedora /bin/bash

Unable to find image ‘fedora’ locally

fedora:latest: The image you are pulling has been verified

00a0c78eeb6d: Pull complete

2f6ab0c1646e: Pull complete

511136ea3c5a: Already exists

Status: Downloaded newer image for fedora:latest

bash-4.3# cat /etc/issue

Fedora release 21 (Twenty One)

Kernel \r on an \m (\l)

[root@juno ~]# docker ps -a

CONTAINER ID        IMAGE                    COMMAND             CREATED             STATUS                        PORTS               NAMES

738e54f9efd4        fedora:latest            “/bin/bash”         3 minutes ago       Exited (127) 25 seconds ago                       stoic_lumiere

14fd0cbba76d        ubuntu:latest            “/bin/bash”         3 minutes ago       Exited (0) 3 minutes ago                          prickly_hypatia

ef1a726d1cd4        fedora:latest            “/bin/bash”         5 minutes ago       Exited (0) 3 minutes ago                          drunk_shockley

0a2da90a269f        ubuntu:latest            “/bin/bash”         11 hours ago        Exited (0) 11 hours ago                           thirsty_kowalevski

5a3288ce0e8e        ubuntu:latest            “/bin/bash”         11 hours ago        Exited (0) 11 hours ago                           happy_leakey

21e84951eabd        tutum/wordpress:latest   “/run.sh”           16 hours ago        Up About an hour                                  nova-bf5f7eb9-900d-48bf-a230-275d65813b0f

*******************

Setup WordPress

*******************

# docker pull tutum/wordpress

# . keystonerc_admin

# docker save tutum/wordpress | glance image-create --is-public=True --container-format=docker --disk-format=raw --name tutum/wordpress



[root@juno ~(keystone_admin)]# glance image-list
+--------------------------------------+-----------------+-------------+------------------+-----------+--------+
| ID                                   | Name            | Disk Format | Container Format | Size      | Status |
+--------------------------------------+-----------------+-------------+------------------+-----------+--------+
| c6d01e60-56c2-443f-bf87-15a0372bc2d9 | cirros          | qcow2       | bare             | 13200896  | active |
| 9d59e7ad-35b4-4c3f-9103-68f85916f36e | tutum/wordpress | raw         | docker           | 517639680 | active |
+--------------------------------------+-----------------+-------------+------------------+-----------+--------+

********************

Start container

********************

$ . keystonerc_demo

[root@juno ~(keystone_demo)]# neutron net-list

+————————————–+————–+——————————————————-+

| id                                   | name         | subnets                                               |

+————————————–+————–+——————————————————-+

| ccfc4bb1-696d-4381-91d7-28ce7c9cb009 | private      | 6c0a34ab-e3f1-458c-b24a-96f5a2149878 10.0.0.0/24      |

| 32c14896-8d47-4a56-b3c6-0dd823f03089 | public       | b1799aef-3f69-429c-9881-f81c74d83060 192.169.142.0/24 |

| a65bff8f-e397-491b-aa97-955864bec2f9 | demo_private | 69012862-f72e-4cd2-a4fc-4106d431cf2f 70.0.0.0/24      |

+————————————–+————–+——————————————————-+

$ nova boot –image “tutum/wordpress” –flavor m1.tiny –key-name  osxkey –nic net-id=a65bff8f-e397-491b-aa97-955864bec2f9 WordPress

[root@juno ~(keystone_demo)]# nova list

+————————————–+———–+———+————+————-+—————————————–+

| ID                                   | Name      | Status  | Task State | Power State | Networks                                |

+————————————–+———–+———+————+————-+—————————————–+

| bf5f7eb9-900d-48bf-a230-275d65813b0f |  WordPress   | ACTIVE  | –          | Running     | demo_private=70.0.0.16, 192.169.142.153 |

+—————————-———-+———–+———+————+————-+—————————————–+

[root@juno ~(keystone_demo)]# docker ps -a

CONTAINER ID        IMAGE                    COMMAND             CREATED             STATUS                   PORTS               NAMES

21e84951eabd        tutum/wordpress:latest   “/run.sh”           About an hour ago   Up 11 minutes                                nova-bf5f7eb9-900d-48bf-a230-275d65813b0f

**************************

Starting WordPress

**************************

Immediately after VM starts (on non-default Libvirts Subnet 192.169.142.0/24) status WordPress  is SHUTOFF, so we start WordPress (browser launched to

Juno VM 192.169.142.45 from KVM Hypervisor Server ) :-

   Browser launched to WordPress container 192.169.142.153  from KVM  Hypervisor Server

 

 **********************************************************************************

Floating IP assigned to WordPress container  been used to launch browser:-

**********************************************************************************

*******************************************************************************************

Another sample to demonstrating nova-docker container functionality. Browser launched to WordPress nova-docker container   (192.169.142.155)   from KVM Hypervisor Server hosting Libvirt’s Subnet (192.169.142.0/24)

*******************************************************************************************

 

*****************

MySQL Setup

*****************

  # docker pull tutum/mysql

  # .   keystonerc_admin

*****************************

Creating Glance Image

*****************************

#   docker save tutum/mysql:latest | glance image-create –is-public=True –container-format=docker –disk-format=raw –name tutum/mysql:latest

****************************************

Starting Nova-Docker container

****************************************

# .   keystonerc_demo

#   nova boot –image “tutum/mysql:latest” –flavor m1.tiny –key-name  osxkey –nic net-id=5fcd01ac-bc8e-450d-be67-f0c274edd041 mysql

 

 [root@ip-192-169-142-45 ~(keystone_demo)]# nova list

+————————————–+—————+——–+————+————-+—————————————–+

| ID                                   | Name          | Status | Task State | Power State | Networks                                |

+————————————–+—————+——–+————+————-+—————————————–+

| 3dbf981f-f28c-4abe-8fd1-09b8b8cad930 | WordPress     | ACTIVE | –          | Running     | demo_network=70.0.0.16, 192.169.142.153 |

| 39eef361-1329-44d9-b05a-f6b4b8693aa3 | mysql         | ACTIVE | –          | Running     | demo_network=70.0.0.19, 192.169.142.155 |

| 626bd8e0-cf1a-4891-aafc-620c464e8a94 | tutum/hipache | ACTIVE | –          | Running     | demo_network=70.0.0.18, 192.169.142.154 |

+————————————–+—————+——–+————+————-+—————————————–+

[root@ip-192-169-142-45 ~(keystone_demo)]# docker ps -a

CONTAINER ID        IMAGE                          COMMAND               CREATED             STATUS                         PORTS               NAMES

3da1e94892aa        tutum/mysql:latest             “/run.sh”             25 seconds ago      Up 23 seconds                                      nova-39eef361-1329-44d9-b05a-f6b4b8693aa3

77538873a273        tutum/hipache:latest           “/run.sh”             30 minutes ago                                                         condescending_leakey

844c75ca5a0e        tutum/hipache:latest           “/run.sh”             31 minutes ago                                                         condescending_turing

f477605840d0        tutum/hipache:latest           “/run.sh”             42 minutes ago      Up 31 minutes                                      nova-626bd8e0-cf1a-4891-aafc-620c464e8a94

3e2fe064d822        rastasheep/ubuntu-sshd:14.04   “/usr/sbin/sshd -D”   About an hour ago   Exited (0) About an hour ago                       test_sshd

8e79f9d8e357        fedora:latest                  “/bin/bash”           About an hour ago   Exited (0) About an hour ago                       evil_colden

9531ab33db8d        ubuntu:latest                  “/bin/bash”           About an hour ago   Exited (0) About an hour ago                       angry_bardeen

df6f3c9007a7        tutum/wordpress:latest         “/run.sh”             2 hours ago         Up About an hour                                   nova-3dbf981f-f28c-4abe-8fd1-09b8b8cad930

 

[root@ip-192-169-142-45 ~(keystone_demo)]# docker logs 3da1e94892aa

=> An empty or uninitialized MySQL volume is detected in /var/lib/mysql

=> Installing MySQL …

=> Done!

=> Creating admin user …

=> Waiting for confirmation of MySQL service startup, trying 0/13 …

=> Creating MySQL user admin with random password

=> Done!

========================================================================

You can now connect to this MySQL Server using:

mysql -uadmin -pfXs5UarEYaow -h -P

Please remember to change the above password as soon as possible!
MySQL user ‘root’ has no password but only allows local connections
========================================================================
141218 20:45:31 mysqld_safe Can’t log to error log and syslog at the same time.
Remove all –log-error configuration options for –syslog to take effect.

141218 20:45:31 mysqld_safe Logging to ‘/var/log/mysql/error.log’.
141218 20:45:31 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

[root@ip-192-169-142-45 ~(keystone_demo)]# mysql -uadmin -pfXs5UarEYaow -h 192.169.142.155  -P 3306
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.40-0ubuntu0.14.04.1 (Ubuntu)

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

MySQL [(none)]> show databases ;
+——————–+
| Database           |
+——————–+
| information_schema |
| mysql              |
| performance_schema |
+——————–+
3 rows in set (0.01 sec)

MySQL [(none)]>

*******************************************

Setup Ubuntu 14.04 with SSH access

*******************************************

# docker pull rastasheep/ubuntu-sshd:14.04

# . keystonerc_admin

# docker save rastasheep/ubuntu-sshd:14.04 | glance image-create –is-public=True   –container-format=docker –disk-format=raw –name rastasheep/ubuntu-sshd:14.04

# . keystonerc_demo

# nova boot –image “rastasheep/ubuntu-sshd:14.04” –flavor m1.tiny –key-name  osxkey    –nic net-id=5fcd01ac-bc8e-450d-be67-f0c274edd041 ubuntuTrusty

***********************************************************

Login to dashboard && assign floating IP via dashboard:-

***********************************************************

  [root@ip-192-169-142-45 ~(keystone_demo)]# nova list

+————————————–+————–+———+————+————-+—————————————–+

| ID                                   | Name         | Status  | Task State | Power State | Networks                                |

+————————————–+————–+———+————+————-+—————————————–+

| 3dbf981f-f28c-4abe-8fd1-09b8b8cad930 | WordPress    | SHUTOFF | –          | Shutdown    | demo_network=70.0.0.16, 192.169.142.153 |

| 7bbf887f-167c-461e-9ee0-dd4d43605c9e | lamp         | ACTIVE  | –          | Running     | demo_network=70.0.0.20, 192.169.142.156 |

| 39eef361-1329-44d9-b05a-f6b4b8693aa3 | mysql        | SHUTOFF | –          | Shutdown    | demo_network=70.0.0.19, 192.169.142.155 |

| f21dc265-958e-4ed0-9251-31c4bbab35f4 | ubuntuTrusty | ACTIVE  | –          | Running     | demo_network=70.0.0.21, 192.169.142.157 |

+————————————–+————–+———+————+————-+—————————————–+

[root@ip-192-169-142-45 ~(keystone_demo)]# ssh root@192.169.142.157

root@192.169.142.157’s password:

Last login: Fri Dec 19 09:19:40 2014 from ip-192-169-142-45.ip.secureserver.net

root@instance-0000000d:~# cat /etc/issue

Ubuntu 14.04.1 LTS \n \l

root@instance-0000000d:~# ifconfig

lo        Link encap:Local Loopback

inet addr:127.0.0.1  Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING  MTU:65536  Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

nse49711e9-93 Link encap:Ethernet  HWaddr fa:16:3e:32:5e:d8

inet addr:70.0.0.21  Bcast:70.0.0.255  Mask:255.255.255.0

inet6 addr: fe80::f816:3eff:fe32:5ed8/64 Scope:Link

UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

RX packets:2574 errors:0 dropped:0 overruns:0 frame:0

TX packets:1653 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:2257920 (2.2 MB)  TX bytes:255582 (255.5 KB)

root@instance-0000000d:~# df -h

Filesystem                                                                                         Size  Used Avail Use% Mounted on

/dev/mapper/docker-253:1-4600578-76893e146987bf4b58b42ff6ed80892df938ffba108f22c7a4591b18990e0438  9.8G  302M  9.0G   4% /

tmpfs                                                                                              1.9G     0  1.9G   0% /dev

shm                                                                                                 64M     0   64M   0% /dev/shm

/dev/mapper/centos-root                                                                             36G  9.8G   26G  28% /etc/hosts

tmpfs                                                                                              1.9G     0  1.9G   0% /run/secrets

tmpfs                                                                                              1.9G     0  1.9G   0% /proc/kcore

 

 References

1. http://cloudssky.com/en/blog/Nova-Docker-on-OpenStack-RDO-Juno/

2. https://www.mirantis.com/openstack-portal/external-tutorials/nova-docker-juno/

3 Responses to Running Nova-Docker on OpenStack Juno (CentOS 7)

  1. Hi,
    Thanks for post, I am installing docker on compute node (CentOS 7) (Open-stack 3 node architecture).
    It’s install properly and running fine and also showing on controller.
    But when I want to lunch the instance from docker image it showing error.
    And In Nova services the host nova-docker status is down.

    == Glance images ==
    +————————————–+——–+————-+——————+———–+——–+
    | ID | Name | Disk Format | Container Format | Size | Status |
    +————————————–+——–+————-+——————+———–+——–+
    | 0c5c6867-e72c-4d9d-b8f5-92ef0605137f | centos | raw | docker | 232420352 | active |
    | 6e79d693-779b-44b7-b4a6-541f9dd78d59 | cirros | qcow2 | bare | 13200896 | active |
    +————————————–+——–+————-+——————+———–+——–+==
    Nova managed services ==
    +—-+——————+—————–+———-+———+——-+—————————-+—————–+
    | Id | Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
    +—-+——————+—————–+———-+———+——-+—————————-+—————–+
    | 1 | nova-consoleauth | juno-controller | internal | enabled | up | 2015-04-01T04:17:22.000000 | – |
    | 2 | nova-conductor | juno-controller | internal | enabled | up | 2015-04-01T04:17:22.000000 | – |
    | 3 | nova-cert | juno-controller | internal | enabled | up | 2015-04-01T04:17:22.000000 | – |
    | 4 | nova-scheduler | juno-controller | internal | enabled | up | 2015-04-01T04:17:22.000000 | – |
    | 5 | nova-compute | juno-compute | nova | enabled | down | 2015-04-01T04:17:25.000000 | – |
    | 6 | nova-compute | nova-docker | nova | enabled | down | 2015-03-28T06:52:21.000000 | – |
    +—-+——————+—————–+———-+———+——-+—————————-+———

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