github.com/technosophos/deis@v1.7.1-0.20150915173815-f9005256004b/docs/installing_deis/baremetal.rst (about)

     1  :title: Installing Deis on Bare Metal
     2  :description: How to provision a multi-node Deis cluster on Bare Metal
     3  
     4  .. _deis_on_bare_metal:
     5  
     6  Bare Metal
     7  ==========
     8  
     9  Deis clusters can be provisioned anywhere `CoreOS`_ can, including on your own hardware.
    10  
    11  Please :ref:`get the source <get_the_source>` while following this documentation.
    12  
    13  To get CoreOS running on raw hardware, you can boot with `PXE`_ or `iPXE`_ - this will boot a CoreOS
    14  machine running entirely from RAM. Then, you can `install CoreOS to disk`_.
    15  
    16  Check System Requirements
    17  -------------------------
    18  
    19  Please refer to :ref:`system-requirements` for resource considerations when choosing a
    20  machine size to run Deis.
    21  
    22  
    23  Generate SSH Key
    24  ----------------
    25  
    26  .. include:: ../_includes/_generate-ssh-key.rst
    27  
    28  
    29  Customize user-data
    30  -------------------
    31  
    32  
    33  Generate a New Discovery URL
    34  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    35  
    36  .. include:: ../_includes/_generate-discovery-url.rst
    37  
    38  
    39  SSH Key
    40  ^^^^^^^
    41  
    42  Add the public key part for the SSH key generated in the first step to the user-data file:
    43  
    44  .. code-block:: console
    45  
    46      ssh_authorized_keys:
    47        - ssh-rsa AAAAB3... deis
    48  
    49  
    50  Update $private_ipv4
    51  ^^^^^^^^^^^^^^^^^^^^
    52  
    53  `CoreOS`_ on bare metal doesn't detect the ``$private_ipv4`` reliably. Replace all occurences in
    54  the user-data with the (private) IP address of the node.
    55  
    56  
    57  .. include:: ../_includes/_private-network.rst
    58  
    59  Add Environment
    60  ^^^^^^^^^^^^^^^
    61  
    62  Since `CoreOS`_ doesn't detect private and public IP adresses, ``/etc/environment`` file doesn't
    63  get written on boot. Add it to the `write_files` section of the user-data file:
    64  
    65  .. code-block:: console
    66  
    67        - path: /etc/environment
    68          permissions: 0644
    69          content: |
    70            COREOS_PUBLIC_IPV4=<your public ip>
    71            COREOS_PRIVATE_IPV4=<your private ip>
    72  
    73  
    74  Install CoreOS to disk
    75  ----------------------
    76  
    77  Assuming you have booted your bare metal server into `CoreOS`_, you can now perform the
    78  installation to disk.
    79  
    80  Review disk usage
    81  ^^^^^^^^^^^^^^^^^
    82  
    83  See :ref:`disk_usage` for more information on how to optimize local disks for Deis.
    84  
    85  Provide the config file to the installer
    86  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    87  
    88  Save the user-data file to your bare metal machine. The example assumes you transferred the config
    89  to ``/tmp/config``
    90  
    91  
    92  Start the installation
    93  ^^^^^^^^^^^^^^^^^^^^^^
    94  
    95  .. code-block:: console
    96  
    97      coreos-install -C stable -c /tmp/config -d /dev/sda -V 766.3.0
    98  
    99  
   100  This will install the latest `CoreOS`_ stable release that has been known to work
   101  well with Deis. The Deis team tests each new stable release for Deis compatibility,
   102  and it is generally not recommended to use a newer, untested release.
   103  
   104  After the installation has finished, reboot your server. Once your machine is back up, you should
   105  be able to log in as the `core` user using the `deis` ssh key.
   106  
   107  
   108  Configure DNS
   109  -------------
   110  
   111  See :ref:`configure-dns` for more information on properly setting up your DNS records with Deis.
   112  
   113  
   114  Install Deis Platform
   115  ---------------------
   116  
   117  Now that you've finished provisioning a cluster, please refer to :ref:`install_deis_platform` to
   118  start installing the platform.
   119  
   120  Known Problems
   121  --------------
   122  
   123  
   124  Hostname is localhost
   125  ^^^^^^^^^^^^^^^^^^^^^
   126  
   127  If your hostname after installation to disk is ``localhost``, set the hostname in user-data before
   128  installation:
   129  
   130  .. code-block:: console
   131  
   132      hostname: your-hostname
   133  
   134  The hostname must not be the fully qualified domain name!
   135  
   136  
   137  Slow name resolution
   138  ^^^^^^^^^^^^^^^^^^^^
   139  
   140  Certain DNS servers and firewalls have problems with glibc sending out requests for IPv4 and IPv6
   141  addresses in parallel. The solution is to set the option ``single-request`` in
   142  ``/etc/resolv.conf``. This can best be accomplished in the user-data when installing `CoreOS`_ to
   143  disk. Add the following block to the ``write_files`` section:
   144  
   145  .. code-block:: console
   146  
   147        - path: /etc/resolv.conf
   148          permissions: 0644
   149          content: |
   150            nameserver 8.8.8.8
   151            nameserver 8.8.4.4
   152            domain your.domain.name
   153            options single-request
   154  
   155  
   156  .. _`cluster size`: https://github.com/coreos/etcd/blob/master/Documentation/optimal-cluster-size.md
   157  .. _`CoreOS`: https://coreos.com/
   158  .. _`install CoreOS to disk`: https://coreos.com/docs/running-coreos/bare-metal/installing-to-disk/
   159  .. _`iPXE`: https://coreos.com/docs/running-coreos/bare-metal/booting-with-ipxe/
   160  .. _`PXE`: https://coreos.com/docs/running-coreos/bare-metal/booting-with-pxe/