Single Node OpenStack (Liberty) Installation Steps on CentOS 7

Pradeep Kumar

I am a huge fan of open source and love to share How To’s tutorials on Linux, Cloud and DevOps. I have been working as Linux Consultant, Cloud & DevOps Engineer since 2010

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40 Responses

  1. Rajendra Dudhare says:

    ERROR : Error appeared during Puppet run: 192.168.45.179_chrony.pp
    Error: /usr/sbin/ntpdate pool.ntp.org returned 1 instead of one of [0]

  2. Rinshad says:

    Hi Pradeep,

    Thanks for the valuable article.
    Could you let me know how I can add additional IP address to the openstack?
    For test I am using private IP address.

  3. Rinshad says:

    Hi Pradeep,

    After the open stack installation as you said.

    >>> After the installation a new interface “br-ex” will be created and assign the IP addess of eth0 or enp0s3 to br-ex .
    cp ifcfg-enp0s3 ifcfg-br-ex
    But I am not seeing a file name with ifcfg-enp0s3 under the folder network-scripts

    • Pradeep Kumar says:

      Hi Rinshad ,

      What OS version you are using ? and paste the content of directory (/etc/sysconfig/network-scripts). In case of CentOS 7.X & RHEL 7.X we have a interface file either with name “ifcfg-enp0s3” or ifcfg-eth0/1/2′ under the directory ‘/etc/sysconfig/network-scripts/’.

      • Rinshad says:

        Hi Pradeep,

        I am using Centos.7.1. Here is network-scripts folder contents.

        network-scripts]# ls
        ifdown ifdown-ippp ifdown-post ifdown-Team ifup-aliases ifup-ippp ifup-plip ifup-routes ifup-tunnel network-functions-ipv6
        ifcfg-eno1 ifdown-bnep ifdown-ipv6 ifdown-ppp ifdown-TeamPort ifup-bnep ifup-ipv6 ifup-plusb ifup-sit ifup-wireless
        ifcfg-lo ifdown-eth ifdown-isdn ifdown-routes ifdown-tunnel ifup-eth ifup-isdn ifup-post ifup-Team init.ipv6-global
        ifcfg-Profile_1 ifdown-ib ifdown-ovs ifdown-sit ifup ifup-ib ifup-ovs ifup-ppp ifup-TeamPort network-functions

  4. praveen says:

    when i am using this command yum install -y https://www.rdoproject.org/repos/rdo-release.rpm
    i am gettig this error:
    Loaded plugins: fastestmirror, langpacks
    Cannot open: https://www.rdoproject.org/repos/rdo-release.rpm. Skipping.
    Error: Nothing to do

    can u please tell me why it is like this.

  5. Du Vang Van says:

    i do not acccess after resat network
    it is fail connect

  6. Samir Kar says:

    Nice article all steps are working properly.

    some rpms need to be download from epel and centos plus repository 🙂

  7. mohammed Khan says:

    I cannot access to external network from instances that I launched in openstack environment. I have mapped it corectly but still cannot ping is threre a way you can show us how to map it our virtual netwotk to external network. It will be so helpfull.

  8. fadloli says:

    Hi Kumar,

    i have error like this when install openstack:
    ERROR : Error appeared during Puppet run: 10.10.66.60_provision_glance
    Error: Execution of ‘/usr/bin/openstack image create –format shell cirros –public –container-format=bare –disk-format=qcow2 –copy-from=http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img’ returned 1: 400 Bad Request: The HTTP URL is invalid: HTTPConnectionPool(host=’download.cirros-cloud.net’, port=80): Max retries exceeded with url: /0.3.4/cirros-0.3.4-x86_64-disk.img (Caused by NewConnectionError(‘<requests.packages.urllib3.connection.HTTPConnection object at 0x6e9cf50>: Failed to establish a new connection: [Errno 113] EHOSTUNREACH’,)) (HTTP 400)
    what is impact for my environment?and any resolution? ^_^
    Regards

  9. akanksha singh says:

    failure: repodata/repomd.xml from base: [Errno 256] No more mirrors to try.
    http://mirror.centos.org/centos/7/os/x86_64/repodata/repomd.xml: [Errno -1] Erro r importing repomd.xml for base: Damaged repomd.xml file
    ++ t

    Getting this error when trying to Start OpenStack installation using answer file, if anyone can help me here.

  10. josefh says:

    after finishing the installation, i must have an internet connection to access the dashboard. what should i do to make it as an offline server? please help me. thanks before.

  11. Subramani says:

    Very good steps

  12. Sanya says:

    The only available attributes in the file eno1 are these. I changed the ‘TYPE’ and the ‘ONBOOT’ thing. Do I need to add the other stuff myself?

    TYPE=OVS
    BOOTPROTO=dhcp
    DEFROUTE=yes
    PEERDNS=yes
    PEERROUTES=yes
    IPV4_FAILURE_FATAL=no
    IPV6INIT=yes
    IPV6_AUTOCONF=yes
    IPV6_DEFROUTE=yes
    IPV6_PEERDNS=yes
    IPV6_PEERROUTES=yes
    IPV6_FAILURE_FATAL=no
    NAME=eno1
    UUID=0b0f4400-2b25-4637-9ead-0aa3df178b0e
    DEVICE=eno1
    ONBOOT=yes

    • You have to keep following stuff in the file “ifcfg-eno1”

      DEVICE=eno1
      HWADDR=’MAC-Address-Here’
      TYPE=OVSPort
      DEVICETYPE=ovs
      OVS_BRIDGE=br-ex
      ONBOOT=yes

      then create a new file with the name “ifcfg-br-ex”

      DEVICE=br-ex
      DEVICETYPE=ovs
      TYPE=OVSBridge
      BOOTPROTO=static
      IPADDR= ‘IP-Address-Here’
      NETMASK=’Subnet-Mask-Here’
      GATEWAY=’gateway-IP-Here’
      DNS1=’dns-Server-IP-Address-Here’
      ONBOOT=yes

      Restart the network service

  13. ankur says:

    Hello,

    Thanks for the great article. Could you please share the interface details of the VM. How many interfaces should I create? I created 2 interfaces. 1 with NAT with IP 10.0.2.15 and other with HOST-ONLY Adapter with IP 192.168.1.30. But in my answer file I configured the 10.0.2.15 as the IPs for controller. The packstack was successful but I am not able to access Horizon on the 10.0.2.15. Could you please help?

    Regards
    Ankur

    • Hello Ankur ,

      Basically You can keep two interfaces for each node( Host-only and bridge). Specify the IP address of host only interface in the answers file for your respective nodes. All the openstack management API communication will be done via host only network. You can access the each node and dashboard from the outside using bridge interface ip address.
      So in your setup change NAT mode to bridge mode for the interface and assign the ip address as per your setup and try accessing the Dashboard

      • ankur says:

        Thank you Pradeep. For the single node setup, I added a port forwarding rule and it worked. Now I can access the horizon. But the multinode, because of the lack of resources my setup is a little chaotic.
        I have a virtual box with 2 vms in a physical host and in another physical host, I have another vm inside the virtual host. The problem now is that the vms in different virtual boxes can communicate only via the bridge. In that case the bridge has to be used for the openstack Management API communication?

  14. Evio Fragoso says:

    Hello,

    I’m getting some problems. I can’t use keystone command, it says it not exists. I can’t create a network because it says it needs a plugin to get an auth token or it gives me error 401.If someone can help i’m really in need.

    Thank you.

  15. Ken says:

    Hello,

    Please help me,
    After exec command: packstack –answer-file /root/answer.txt
    I get stuck in this line:
    Applying 192.168.1.2_controller.pp
    Testing if puppet apply is finished: 192.168.1.2_controller.pp []

    May you guide me how to slove it?

    Thanks all,

  16. neeraj says:

    i also has same issue
    I get stuck in this line:
    Applying 192.168.1.2_controller.pp
    Testing if puppet apply is finished: 192.168.1.2_controller.pp []

  17. Neeta says:

    Thanks for the great article. I am facing some problem , the installation gets stuck up at Testing if puppet apply is finished: 192.168.0.250_controller.pp. Could you please help me .

    • Hi Neeta,

      Which Openstack version you are trying to install and if possible share the error logs of your installation.

      • radheck says:

        I have the same problem and i dont know how much time do the server needs to past that point:

        Testing if puppet apply is finished: 192.168.1.130_controller.pp

        Always happens even with the option all in one , and i have the same repos as the example , i have followed all the steps that the tutorial says…. could you help us?

        • radheck says:

          openstack-packstack noarch 10.0.0-0.1.0rc1.el7 @openstack-ocata this is the version an is a CENTOS 7 , for SO.

        • Can you share the what exactly error are getting in log file. Whenever we start OpenStack installation, it gives the log file where you can track error logs.

          • radheck says:

            I have changed the openstack version , and it works ! And furthermore with 2gb of ram is not posible to start the dashboard correctly . However the explanation that you give us is very useful. thanks

  18. Sujoy Kumar says:

    Hi Pradeep,
    I got the following error while running “packstack –answer-file /root/answer.txt”
    Applying 192.168.2.20_controller.pp
    192.168.2.20_controller.pp: [ ERROR ]
    Applying Puppet manifests [ ERROR ]
    ERROR : Error appeared during Puppet run: 192.168.2.20_controller.pp
    Error: Systemd start for httpd failed!

    • Hi Sujoy,

      Please check the errors in OpenStack installation log file

      • Sujoy Kumar says:

        Hi Pradeep,
        Still getting the error, This time it is a different error. Formatted the system three time. Can I get your mailID so that I can send the answer and log files. Please inbox me your contact in sujoykr@gmail.com

        192.168.122.18_controller.pp: [ ERROR ]
        Applying Puppet manifests [ ERROR ]

        ERROR : Error appeared during Puppet run: 192.168.122.18_controller.pp
        Error: Systemd start for openstack-nova-scheduler failed!
        You will find full trace in log /var/tmp/packstack/20170804-081704-YgDakK/manifests/192.168.122.18_controller.pp.log
        Please check log file /var/tmp/packstack/20170804-081704-YgDakK/openstack-setup.log for more information

        Thanks

      • Sujoy Kumar says:

        Hi Pradeep,

        I getting this error again after formating

        192.168.122.18_controller.pp: [ ERROR ]
        Applying Puppet manifests [ ERROR ]
        ERROR : Error appeared during Puppet run: 192.168.122.18_controller.pp
        Error: Systemd start for openstack-nova-scheduler failed!
        You will find full trace in log /var/tmp/packstack/20170816-032557-UHamKh/manifests/192.168.122.18_controller.pp.log

        Can you suggest how much RAM is required for the running “packstack”. Thanks

  19. KYO says:

    Hi Pradeep, thank you so much for offering this wonderful article, i’ve successfully installed my openstack on my computer. but i’ve got two questions about it, please take a look when you’re free, thanks again:
    No.1: at step 5, ediiting the answer file, about the option ‘CONFIG_HORIZON_SSL’, if i set ‘y’, i got a error during the installion, which prompts ” ERROR : [Errno 2] No such file or directory: ‘/etc/pki/tls/certs/selfcert.crt’ “; so i have to set ‘n’, then the installion succeeds. so what the meaning of this option? is there any problem that i set ‘n’?

    No.2: i’ve not done the step 6, i can still access my dashboard link, is there any problem that ignoring this step?

    • Hi ,

      Answer of your queries:

      1) “CONFIG_HORIZON_SSL =n” means your openstack dashboard will open on http protocol. Communication between your web browser and Dashboard will be non-secure.
      2) In case you skip step-6 then you can not access the VMs from outside with floating IPs.

      • KYO says:

        got it, thanks again~

      • KYO says:

        Hi, i’ve done the step-6, got another question: my initial ip is 192.168.99.141, dhcp, after adding this new interface br-ex, restarting the network and rebooting, my initial ip becomes 192.168.99.143, i can stilll access my dashboard link, is this normal?

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