How to Install Tripleo(Openstack on Openstack) UnderCloud on CentOS 7


Undercloud is a single node OpenStack installation deployed either in a Virtual machine or in bare metal server. The objective of undercloud is to install, test, manage and update its overcloud servers (Controller, Compute & Storage nodes). In Red Hat terminology undercloud is known as “Director“. Undercloud basically contains all the images that is required to deployed Overcloud Controller, Computes, Swift and Storage.

Overcloud is the actual functional cloud for any organization where all the Virtual Machines are created on compute nodes and handle all the workloads. In other words we can say overcloud provides the openstack services like Nova, Keystone , Horizon, Neutron, cinder, Glance, Heat & Ceilometer Services.

In this article we will demonstrate how to install TripleO undercloud or Director on CentOS 7 VM.

Following are the minimum system requirements for undercloud:

  • 16 GB RAM
  • 1 Quad Core CPU
  • 80 GB disk Space
  • 2 Nics
  • CentOS 7.x / RHEL 7.x

Below are my lab setup details:

  • CentOS 7 VM (Minimal Installation) is hosted inside the KVM hypervisor.
  • Two Interfaces are attached to VM (Provisioning & NAT)
  • Provisioning Network:
  • NAT Network:
  • IP Address on eth0 is and IP Address on eth1 is

To successfully install undercloud inside a virtual machine, you have to enabled Nested Virtualization in KVM hypervisor, if you not sure how to enable it, refer the below:

Let’s jump into the CentOS 7 VM and follow the below Steps:

Step:1) Set the Hostname and update /etc/hosts file

Run the hostnamectl command to set the hostname,

[root@localhost ~]# hostnamectl set-hostname ""
[root@localhost ~]# exec bash
[root@undercloud ~]#

Add the following entries using the beneath command:

[root@undercloud ~]# echo "" >> /etc/hosts

Update your system using below yum command and reboot once.

[root@undercloud ~]# yum update -y && reboot

Step:2) Create non-root user (stack)

Run the beneath commands one after the another to create stack user and assign sudo rights to it. We will install undercloud using stack user only.

[root@undercloud ~]# useradd stack
[root@undercloud ~]# echo "enter_password_here" | passwd --stdin stack
[root@undercloud ~]# echo "stack ALL=(root) NOPASSWD:ALL" | sudo tee -a /etc/sudoers.d/stack
stack ALL=(root) NOPASSWD:ALL
[root@undercloud ~]# chmod 0440 /etc/sudoers.d/stack
[root@undercloud ~]# su - stack
[stack@undercloud ~]$

Step:3) Enable required repositories for undercloud

Execute the below commands to enable and configured required repositories for undercloud installation.

[stack@undercloud ~]$ wget
[stack@undercloud ~]$ rpm -ivh python2-tripleo-repos-0.0.1-0.20190328140951.a7bc8dc.el7.noarch.rpm
[stack@undercloud ~]$ sudo -E tripleo-repos -b rocky current
[stack@undercloud ~]$ sudo yum -y install yum-plugin-priorities
[stack@undercloud ~]$ sudo yum install epel-release -y

Note : We can check the latest version of python2-tripleo-repos from RDO repository

Step:4) Install TripleO CLI package using yum command

[stack@undercloud ~]$ sudo yum install python-tripleoclient -y

Step:5) Copy & edit “undercloud.conf” sample file that suits to your env

[stack@undercloud ~]$ cp /usr/share/instack-undercloud/undercloud.conf.sample ~/undercloud.conf

Now edit ‘undercloud.conf‘ that suits to your environment, In my case I am adding the following content under “Default” Section

[stack@undercloud ~]$ vi undercloud.conf
local_ip =
undercloud_public_vip =
undercloud_admin_vip =
local_interface = eth1
masquerade_network =
dhcp_start =
dhcp_end =
network_cidr =
network_gateway =
inspection_iprange =,
generate_service_certificate = true
certificate_generation_ca = local

Save and exit the file.

Step:6) Start undercloud installation using openstack command

Now start undercloud installation using below openstack command,

[stack@undercloud ~]$ openstack undercloud install

Once the installation is completed successfully, we will get the output something like below


Verify the OpenStack Service list

[stack@undercloud ~]$ source stackrc
(undercloud) [stack@undercloud ~]$ openstack service list
| ID                               | Name             | Type                    |
| 19f1261745004b31bc77dcb17a5ed4f5 | heat-cfn         | cloudformation          |
| 1bdd5dfbc36f444ebe62580d71f1a7ec | heat             | orchestration           |
| 2b39423f188b412d85bed43f112b35d7 | zaqar-websocket  | messaging-websocket     |
| 46f64d65be874718a1b2c123f588371b | keystone         | identity                |
| 605261da43d64395b72acc5309a22096 | mistral          | workflowv2              |
| 6f50fb704b224c1abc3c2a1a163eb73a | neutron          | network                 |
| 7110b7d7711a4aa1af6a3c13566be28f | zaqar            | messaging               |
| 7e41468745724ecfa8ed339137e8b700 | placement        | placement               |
| 853efa8a8acf403b827617725c3b7322 | ironic-inspector | baremetal-introspection |
| a5522e5df77343b99a0e47812323a17b | swift            | object-store            |
| b9bbb1a771704b57a0833d738bfb86e5 | glance           | image                   |
| d50fdfa25fb64c3e865c172754452ab1 | ironic           | baremetal               |
| e2ea283690c742d3a98bd1eae6f9b830 | nova             | compute                 |
(undercloud) [stack@undercloud ~]$

This confirms that undercloud has been installed successfully. In the next article we will demonstrate how to import overcloud images in under cloud and how to create inventory file for overcloud servers and then we will see how we can deploy overcloud servers via undercloud.

Read More on: How to deploy TripleO Overcloud (Controller , Compute) on CentOS 7 VMs

In case this article helps you to understand how to install undercloud on CentOS 7 VM, please do share your feedback and comments.

43 thoughts on “How to Install Tripleo(Openstack on Openstack) UnderCloud on CentOS 7”

  1. How to do the step “Two Interfaces are attached to VM (Provisioning & NAT)” in Centos virt-manager ?

    virt-manager gui -> New VM -> Network selection -> Host device enpls0:macvtap
    Source mode : Bridge

    Like this?

  2. Hello Pardeep, actually I’m having issue while some sort of issues while setting the Networking Block for VM like Provisioning and NAT. I’ve done every thing, Enabled Nested Virtualization, Configure IP Forwarding but I don’t have the Network Connectivity between my VM and Host. even I’ve used ‘tcpdump’ to capture the traffic and I’ve got the result regarding ‘ARP’. both systems are not able to resolve ARP Requests. so plz help me to solve this issue
    My Setup : RHEL 7.3 as Host as well Guest( for UnderCloud )

  3. Please explain network address details.
    local_ip =
    undercloud_public_vip =
    undercloud_admin_vip =
    local_interface = eth1
    masquerade_network =
    dhcp_start =
    dhcp_end =
    network_cidr =
    network_gateway =
    inspection_iprange =,
    generate_service_certificate = true
    certificate_generation_ca = local

  4. Hello Pradeep, I have some confusion. Could you share about how to create Provisioning & NAT Network on KVM host ? Do physical interfaces need to be attached to the bridges belonged to Provisioning & NAT Network ? And do bridges need to be created with IPs ? Many thanks!

    • Hi Jay,

      You need to create two networks i.e Provisioning and NAT using ‘virsh net-define’ on your KVM hypervisor, Specify the IP address range in the networks xml file,

      virsh net-define /tmp/provisioning.xml

      After creating the networks, attach these network to undercloud Interfaces via Bridges.

      • hi Pradeep, I have successfully completed undercloud & overcloud installation. Thank you very much! !
        And I have other confusions. Thanks in advance.
        (1) Would it be OK if Provisiong Network not created using virsh net-define and I just create a bridge assigning IP address and then make undercloud & overcloud interfaces attached to the bridge ? if not, why ?
        (2) When configuring neutron, you know, which overcloud compute node interface should be attached to the bridge that will be configured in ”bridge_mappings = :” in openvswitch_agent.ini ? That means which interface is used to openstack VM network ?

  5. Hi Pradeep ,

    Please help me in tackling this error.

    stack@undercloud network-scripts]$ cat /home/stack/.instack/install-undercloud.log | less
    [stack@undercloud network-scripts]$ vi /home/stack/undercloud.conf
    [stack@undercloud network-scripts]$ cat /home/stack/.instack/install-undercloud.log | less
    [stack@undercloud network-scripts]$ vi /home/stack/undercloud.conf
    [stack@undercloud network-scripts]$ cat /home/stack/.instack/install-undercloud.log | less
    2018-04-12 21:00:16,199 INFO: Version:
    2018-04-12 21:00:16,199 INFO: Config: 1523580033
    2018-04-12 21:00:16,228 INFO: Puppet: 4.8.2
    2018-04-12 21:00:36,916 INFO: + rc=1
    2018-04-12 21:00:36,931 INFO: + set -e
    2018-04-12 21:00:36,956 INFO: + echo ‘puppet apply exited with exit code 1’
    2018-04-12 21:00:36,957 INFO: puppet apply exited with exit code 1
    2018-04-12 21:00:36,957 INFO: + ‘[‘ 1 ‘!=’ 2 -a 1 ‘!=’ 0 ‘]’
    2018-04-12 21:00:36,958 INFO: + exit 1
    2018-04-12 21:00:37,172 INFO: [2018-04-12 21:00:37,156] (os-refresh-config) [ERROR] during configure phase. [Command ‘[‘dib-run-parts’, ‘/usr/libexec/os-refresh-config/configure.d’]’ returned non-zero exit status 1]
    2018-04-12 21:00:37,178 INFO:
    2018-04-12 21:00:37,189 INFO: [2018-04-12 21:00:37,182] (os-refresh-config) [ERROR] Aborting…
    2018-04-12 21:00:37,726 DEBUG: An exception occurred
    Traceback (most recent call last):
    File “/usr/lib/python2.7/site-packages/instack_undercloud/”, line 2285, in install
    File “/usr/lib/python2.7/site-packages/instack_undercloud/”, line 1592, in _run_orc
    _run_live_command(args, instack_env, ‘os-refresh-config’)
    File “/usr/lib/python2.7/site-packages/instack_undercloud/”, line 671, in _run_live_command
    raise RuntimeError(‘%s failed. See log for details.’ % name)
    RuntimeError: os-refresh-config failed. See log for details.
    2018-04-12 21:00:37,937 ERROR:

    • I was able to resolve this error by adding more memory to VM. I could figure out this on carefully inspecting log which was indicated that its not able to fork the process.

  6. Kindly update. It seems to have a problem with repository

    failure: repodata/repomd.xml from delorean-current: [Errno 256] No more mirrors to try.
    ‘$/repodat a/repomd.xml’: [Errno 14] HTTPS Error 404 – Not Found

      • I have checked network settings, these added br-ctlplane and docker0 interface, and then original eth cannot have IP address, so can’t connect to internet, please help.

      • Hi Pradeep,

        Seems there is a problem with repository, i have encountered the below.

        failure: repodata/repomd.xml from delorean-current: [Errno 256] No more mirrors to try.
        ‘’: [Errno 14] HTTPS Error 404 – Not Found

        also with the


        both are not working. Please do needful.

        • Looks like you need to follow ‘’ this link each time if you face this issue, as this one contains the latest info.
          e.g. for now the repo link is ‘’

          Also on step5 path has been changed. New path is
          cp /usr/share/python-tripleoclient/undercloud.conf.sample ~/undercloud.conf


    • Hi Wilson,

      I just modified the name and base_url line of the file from this article with the lines from the file I linked too.


  7. I stuck at this stage, anyone can help?

    TASK [Run tripleo-container-image-prepare] **************************************************************************************************************************************************
    [WARNING]: Consider using ‘become’, ‘become_method’, and ‘become_user’ rather than running sudo
    fatal: [undercloud]: FAILED! => {“changed”: true, “cmd”: “sudo /usr/bin/tripleo-container-image-prepare –roles-file /tmp/ansible.3LG7JQ-role-data –environment-file /tmp/ansible.R937V3-prepare-param –cleanup partial 2> ../install-undercloud.log”, “delta”: “0:05:04.372270”, “end”: “2018-10-08 14:45:26.273667”, “msg”: “non-zero return code”, “rc”: 1, “start”: “2018-10-08 14:40:21.901397”, “stderr”: “”, “stderr_lines”: [], “stdout”: “”, “stdout_lines”: []}

    NO MORE HOSTS LEFT **************************************************************************************************************************************************************************

    PLAY RECAP **********************************************************************************************************************************************************************************
    undercloud : ok=188 changed=101 unreachable=0 failed=1

    ** Found ansible errors for undercloud deployment! **
    “Run tripleo-container-image-prepare”,
    “_ansible_parsed”: true,
    “stderr_lines”: [],
    “cmd”: “sudo /usr/bin/tripleo-container-image-prepare –roles-file /tmp/ansible.3LG7JQ-role-data –environment-file /tmp/ansible.R937V3-prepare-param –cleanup partial 2> ../install-undercloud.log”,
    “end”: “2018-10-08 14:45:26.273667”,
    “_ansible_no_log”: false,
    “stdout”: “”,
    “changed”: true,
    “rc”: 1,
    “start”: “2018-10-08 14:40:21.901397”,
    “warnings”: [
    “Consider using ‘become’, ‘become_method’, and ‘become_user’ rather than running sudo”
    “delta”: “0:05:04.372270”,
    “invocation”: {
    “module_args”: {
    “warn”: true,
    “executable”: null,
    “_uses_shell”: true,
    “_raw_params”: “sudo /usr/bin/tripleo-container-image-prepare –roles-file /tmp/ansible.3LG7JQ-role-data –environment-file /tmp/ansible.R937V3-prepare-param –cleanup partial 2> ../install-undercloud.log”,
    “removes”: null,
    “argv”: null,
    “creates”: null,
    “chdir”: null,
    “stdin”: null
    “stdout_lines”: [],
    “stderr”: “”,
    “msg”: “non-zero return code”
    Install artifact is located at /home/stack/undercloud-install-20181008144526.tar.bzip2


    Deployment Failed!

  8. For Step Number 3 :
    Change name and baseURL for the repository with the following :

    It worked for me ! thanks

  9. Hi Pradeep,
    I run into this issue
    [stack@undercloud ~]$ sudo -E tripleo-repos -b rocky current
    WARNING: –centos-mirror was deprecated in favour of –mirror
    Loaded plugins: fastestmirror, langpacks, priorities
    Loading mirror speeds from cached hostfile
    * base:
    * extras:
    * updates:
    Package yum-plugin-priorities-1.1.31-50.el7.noarch already installed and latest version
    Nothing to do
    Traceback (most recent call last):
    File “/bin/tripleo-repos”, line 10, in
    File “/usr/lib/python2.7/site-packages/tripleo_repos/”, line 349, in main
    _install_repos(args, base_path)
    File “/usr/lib/python2.7/site-packages/tripleo_repos/”, line 287, in _install_repos
    content = _get_repo(base_path + ‘current/delorean.repo’, args)
    File “/usr/lib/python2.7/site-packages/tripleo_repos/”, line 143, in _get_repo
    r = requests.get(path)
    File “/usr/lib/python2.7/site-packages/requests/”, line 68, in get
    return request(‘get’, url, **kwargs)
    File “/usr/lib/python2.7/site-packages/requests/”, line 50, in request
    response = session.request(method=method, url=url, **kwargs)
    File “/usr/lib/python2.7/site-packages/requests/”, line 464, in request
    resp = self.send(prep, **send_kwargs)
    File “/usr/lib/python2.7/site-packages/requests/”, line 576, in send
    r = adapter.send(request, **kwargs)
    File “/usr/lib/python2.7/site-packages/requests/”, line 431, in send
    raise SSLError(e, request=request)
    requests.exceptions.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:618)

    Since this is just a Lab test to install openstack undercloud/overcloud process, Is there anyway I can make the SSL verify =False to bypass this error? Please advise. Thanks

    • Hi , I would suggest you to update your system first(Director/Undercloud), using yum update command and reboot it and then give a try of above command

  10. Hi Pradeep,

    I am facing issue in the last step. Can you please help

    #openstack undercloud install
    Exception: Error inspecting image: docker://
    time=”2019-05-29T16:59:22+05:30″ level=fatal msg=”pinging docker registry returned: Get x509: certificate is valid for *,, not”

    Traceback (most recent call last):
    File “/usr/lib/python2.7/site-packages/tripleoclient/v1/”, line 1159, in _standalone_deploy
    File “/usr/lib/python2.7/site-packages/tripleoclient/v1/”, line 759, in _deploy_tripleo_heat_templates
    self._prepare_container_images(env, roles_data)
    File “/usr/lib/python2.7/site-packages/tripleoclient/v1/”, line 706, in _prepare_container_images
    env, roles_data, dry_run=True)
    File “/usr/lib/python2.7/site-packages/tripleo_common/image/”, line 178, in container_images_prepare_multi
    File “/usr/lib/python2.7/site-packages/tripleo_common/image/”, line 273, in container_images_prepare
    images, tag_from_label)
    File “/usr/lib/python2.7/site-packages/tripleo_common/image/”, line 452, in discover_image_tags
    File “/usr/lib/python2.7/site-packages/concurrent/futures/”, line 605, in result_iterator
    yield future.result()
    File “/usr/lib/python2.7/site-packages/concurrent/futures/”, line 429, in result
    return self.__get_result()
    File “/usr/lib/python2.7/site-packages/concurrent/futures/”, line 62, in run
    result = self.fn(*self.args, **self.kwargs)
    File “/usr/lib/python2.7/site-packages/tripleo_common/image/”, line 556, in discover_tag_from_inspect
    i = DockerImageUploader._inspect(image_url.geturl(), insecure)
    File “/usr/lib/python2.7/site-packages/tenacity/”, line 241, in wrapped_f
    return, *args, **kw)
    File “/usr/lib/python2.7/site-packages/tenacity/”, line 330, in call
    File “/usr/lib/python2.7/site-packages/tenacity/”, line 297, in iter
    raise retry_exc.reraise()
    File “/usr/lib/python2.7/site-packages/tenacity/”, line 136, in reraise
    raise self.last_attempt.result()
    File “/usr/lib/python2.7/site-packages/concurrent/futures/”, line 422, in result
    return self.__get_result()
    File “/usr/lib/python2.7/site-packages/tenacity/”, line 333, in call
    result = fn(*args, **kwargs)
    File “/usr/lib/python2.7/site-packages/tripleo_common/image/”, line 383, in _inspect
    (image, err))
    ImageUploaderException: Error inspecting image: docker://
    time=”2019-05-29T16:59:22+05:30″ level=fatal msg=”pinging docker registry returned: Get x509: certificate is valid for *,, not”

  11. Hi , after successfully installation of undercloud.i m not able to see the openstack status list commant while in openstack service list is visble.can you expalin why ????

  12. Hi Pradeep,
    For (TripleOdeployment Laptop Configuration -corei5/32GBRam/1 TB drive is that ok ?), Installed on centos7(Hostname is kvm-hypervisor) & KVM.
    But unable to configure network- Provisioning Network & Nat network)

    Can you please help???

    • Hi Priya,

      Create an xml file of external and provisioning network and use following commands enable and start the network
      # virsh net-define /tmp/provisioning.xml
      # virsh net-autostart provisioning
      # virsh net-start provisioning

  13. Hi Pradeep,

    I am facing an error “Restart ryslogd service after logging conf change”.

    TASK [Restart rsyslogd service after logging conf change] ******************************************************
    fatal: [undercloud]: FAILED! => {“msg”: “The conditional check ‘logconfig|changed’ failed. The error was: template error while templating string: no filter named ‘changed’. String: {% if logconfig|changed %} True {% else %} False {% endif %}\n\nThe error appears to be in ‘/home/stack/undercloud-ansible-y3VB7b/Undercloud/host_prep_tasks.yaml’: line 657, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n register: logconfig\n – name: Restart rsyslogd service after logging conf change\n ^ here\n”}

    NO MORE HOSTS LEFT *********************************************************************************************

    PLAY RECAP *****************************************************************************************************
    undercloud : ok=184 changed=53 unreachable=0 failed=1 skipped=164 rescued=0 ignored=1

    Nikhil Kapoor

  14. I also faced below error, and I found the this is due to syntax error in YAML. I have made the changes and it work fine for me.
    Change “- logconfig|changed” to “- logconfig is changed” in below files

    “msg”: “The conditional check ‘logconfig|changed’ failed

    • /usr/share/openstack-tripleo-heat-templates/docker/services/swift-proxy.yaml

      >> Change “is” with “|” test : cause: it’s due to the | test operator being deprecated in Ansible 2.5 and removed in 2.9 (I’m using 2.9 here). 2.5 seems to work ok.

      Apart from that I also applied following fix:

  15. Hello Pardeep, thanks for you updating this post!
    Would you mind to help on this error?
    [stack@undercloud ~]$ openstack undercloud install

    Exception: Deployment failed
    Traceback (most recent call last):
    File “/usr/lib/python2.7/site-packages/tripleoclient/v1/”, line 1323, in _standalone_deploy
    raise exceptions.DeploymentError(‘Deployment failed’)
    DeploymentError: Deployment failed
    Install artifact is located at /home/stack/undercloud-install-20200412122510.tar.bzip2


    Deployment Failed!

    ERROR: Heat log files: /var/log/heat-launcher/undercloud_deploy-ed5RrO


    reset failed: reset: standard error: Inappropriate ioctl for device

    Many thanks!


  16. Hi All,
    I am getting the below error “libfacter was not found”, Can anyone help,

    Thursday 02 July 2020 15:34:32 +0530 (0:00:00.064) 0:04:43.680 *********
    Write kolla config json files ————————————————————————————————————————————————————————- 31.66s
    Run tripleo-container-image-prepare ——————————————————————————————————————————————————————- 28.28s
    Install ntpdate ————————————————————————————————————————————————————————————— 24.86s
    install tmpwatch on the host ————————————————————————————————————————————————————————– 22.16s
    container-registry : Docker | pause while Docker restarts ——————————————————————————————————————————————— 10.10s
    Ensure system is NTP time synced ———————————————————————————————————————————————————————– 9.29s
    Run async deployment NetworkDeployment —————————————————————————————————————————————————————– 7.66s
    Write docker config scripts —————————————————————————————————————————————————————————- 6.20s
    container-registry : Start Docker daemon ————————————————————————————————————————————————————— 3.87s
    Write per-step docker-container-startup-configs ——————————————————————————————————————————————————– 3.51s
    container-registry : Docker | reload docker ———————————————————————————————————————————————————— 3.19s
    Run deployment InstanceIdDeployment ——————————————————————————————————————————————————————– 2.81s
    Run deployment UndercloudAllNodesDeployment ———————————————————————————————————————————————————— 2.80s
    Run deployment UndercloudDeployment ——————————————————————————————————————————————————————– 2.78s
    Run deployment UndercloudAllNodesValidationDeployment ————————————————————————————————————————————————– 2.63s
    allow logrotate to read inside containers ————————————————————————————————————————————————————– 2.57s
    Run deployment UndercloudPreDeployment —————————————————————————————————————————————————————– 2.33s
    tripleo-bootstrap : Deploy required packages to bootstrap TripleO ————————————————————————————————————————————– 2.27s
    Run deployment UndercloudHostsDeployment ————————————————————————————————————————————————————— 2.21s
    Run deployment HostsEntryDeployment ——————————————————————————————————————————————————————– 2.17s
    Exception: Deployment failed
    Traceback (most recent call last):
    File “/usr/lib/python2.7/site-packages/tripleoclient/v1/”, line 1217, in _standalone_deploy
    raise exceptions.DeploymentError(‘Deployment failed’)
    DeploymentError: Deployment failed
    ** Found ansible errors for undercloud deployment! **
    “Debug output for task: Run puppet host configuration for step 1”,
    “changed”: false,
    “failed_when_result”: true,
    “_ansible_no_log”: false,
    “_ansible_verbose_always”: true,
    “outputs.stdout_lines | default([]) | union(outputs.stderr_lines | default([]))”: [
    “libfacter was not found. Please make sure it was installed to the expected location.”

  17. You need to downgrade leatherman packages by “yum downgrade leatherman”.
    I’m using i.e. rpm -qa | grep leatherman

    • the downgrade leatherman is complete, but if run hit again $openstack undercloud install, the process install will be trigger to update package again, and so occur fail back

  18. Hi …
    I have created new network as external network and provisioning network (in virt kvm) and able to see it as virbr0 and virbr1… my issue is when I want to edit undercloud.conf,
    ===> local_interface = ? this is interface for provisioning right…so what interface should I add here? from my ifconfig interfaces I just have ens33 (to lan/internet), lo, virbr0 and virbr1 ..anyway I couldn’t find virbr0 and virbr1 interfaces in /etc/sysconfig/network-script . I’m bit confuse here…any help please. Thank you

  19. Hi..Can I just run single VM first to deploy undercloud? once complete create another VMs for computes and controller. Is it possible? Thank you

  20. Hi,
    I am installing the undercloud. In step 6 i am getting below error. Need your exepert help to resolve this issue
    $ sudo openstack undercloud install
    /usr/lib/python2.7/site-packages/requests/ RequestsDependencyWarning: urllib3 (1.10.2) or chardet (3.0.4) doesn’t match a supported version!
    Traceback (most recent call last):
    File “/bin/openstack”, line 6, in
    from import main
    File “/usr/lib/python2.7/site-packages/openstackclient/”, line 22, in
    from osc_lib.api import auth
    File “/usr/lib/python2.7/site-packages/osc_lib/api/”, line 19, in
    from keystoneauth1.loading import base
    File “/usr/lib/python2.7/site-packages/keystoneauth1/loading/”, line 13, in
    from keystoneauth1.loading import adapter
    File “/usr/lib/python2.7/site-packages/keystoneauth1/loading/”, line 13, in
    from keystoneauth1 import adapter
    File “/usr/lib/python2.7/site-packages/keystoneauth1/”, line 16, in
    from keystoneauth1 import session
    File “/usr/lib/python2.7/site-packages/keystoneauth1/”, line 25, in
    import requests
    File “/usr/lib/python2.7/site-packages/requests/”, line 94, in
    from urllib3.exceptions import DependencyWarning
    ImportError: cannot import name DependencyWarning

    • Hi,
      I hit the same error, and got the hint from this : ‘’

      Reinstall the urllib3 and chardet, and it works.

    • Issue with openstck client :

      Solution: Install pip  (yum install python-devel python-pip) and
      upgrade request pacakge (sudo pip install –upgrade requests)


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