root / docs / scale / i-ns.rst @ 84809111
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.. _i-ns: |
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Synnefo |
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------- |
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:ref:`synnefo <i-synnefo>` || |
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ns || |
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:ref:`apt <i-apt>` || |
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:ref:`mq <i-mq>` || |
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:ref:`db <i-db>` || |
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:ref:`gunicorn <i-gunicorn>` || |
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:ref:`apache <i-apache>` || |
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:ref:`webproject <i-webproject>` || |
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:ref:`astakos <i-astakos>` || |
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:ref:`qh <i-qh>` || |
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:ref:`cms <i-cms>` || |
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:ref:`pithos <i-pithos>` || |
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:ref:`cyclades <i-cyclades>` || |
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:ref:`kamaki <i-kamaki>` || |
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:ref:`backends <i-backends>` |
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Name Server Setup |
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+++++++++++++++++ |
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The following applies to ``ns`` node. You will create an DNS to resolve all |
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FQDNs used by both ``synnefo`` and ``backend`` nodes. All we need here is to have |
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a physical node - ip - role mapping. |
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Assumptions: |
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~~~~~~~~~~~~ |
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- domain to use: ``example.com`` |
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- nodes' IPv4 subnet: ``4.3.2.0/24`` |
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For the sake of simplicity we assume we have 6 nodes assinged the following roles: |
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======== ========= =========================== ==================== |
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hostname IP roles FQDN |
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======== ========= =========================== ==================== |
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node1 4.3.2.1 ns,router,client,astakos,qh accounts.example.com |
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node2 4.3.2.2 cyclades cyclades.example.com |
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node3 4.3.2.3 pithos pithos.example.com |
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node4 4.3.2.4 cms cms.example.com |
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node5 4.3.2.5 db db.example.com |
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node6 4.3.2.6 mq mq.example.com |
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node1 4.3.2.100 master ganeti.example.com |
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======== ========= =========================== ==================== |
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First install the corresponding package: |
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.. code-block:: console |
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# apt-get install bind9 |
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In `/etc/bind/zones/example.com` add: |
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.. code-block:: console |
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$TTL 14400 |
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$origin example.com. |
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@ IN SOA ns.example.com. admin.example.com. ( |
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2012111903; the Serial Number |
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172800; the Refresh Rate |
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7200; the Retry Time |
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604800; the Expiration Time |
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3600; the Minimum Time |
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) |
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@ IN NS ns.example.com. |
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@ IN A 4.3.2.1 |
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ns IN A 4.3.2.1 |
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localhost IN A 127.0.0.1 |
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example.com. IN MX 10 example.com. |
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mail IN CNAME example.com. |
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www IN CNAME example.com. |
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accounts IN CNAME node1.example.com. |
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cyclades IN CNAME node2.example.com. |
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pithos IN CNAME node3.example.com. |
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cms IN CNAME node4.example.com. |
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db IN CNAME node5.example.com. |
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mq IN CNAME node6.example.com. |
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qh IN CNAME node1.example.com. |
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node1 IN A 4.3.2.1 |
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node2 IN A 4.3.2.2 |
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node3 IN A 4.3.2.3 |
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node4 IN A 4.3.2.4 |
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node5 IN A 4.3.2.5 |
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node6 IN A 4.3.2.6 |
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ganeti IN A 4.3.2.100 |
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In `/etc/bind/rev/0-24.2.3.4.in-addr.arpa.zone` add: |
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.. code-block:: console |
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$TTL 86400 |
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$ORIGIN 2.3.4.in-addr.arpa. |
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@ IN SOA ns.example.com. admin.skata.com. ( |
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2012070900; the Serial Number |
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172800; the Refresh Rate |
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7200; the Retry Time |
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604800; the Expiration Time |
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3600 ; the Minimum Time |
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) |
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@ IN NS ns.example.com. |
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1 IN PTR node1.example.com. |
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2 IN PTR node2.example.com. |
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3 IN PTR node3.example.com. |
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4 IN PTR node4.example.com. |
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5 IN PTR node5.example.com. |
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6 IN PTR node6.example.com. |
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In `/etc/bind/named.conf.local` add: |
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.. code-block:: console |
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zone "example.com" in {
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type master; |
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file "/etc/bind/zones/example.com"; |
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}; |
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zone "0-24.2.3.4.in-addr.arpa" in {
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type master; |
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file "/etc/bind/rev/0-24.2.3.4.in-addr.arpa.zone"; |
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}; |
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And then restart the service: |
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.. code-block:: console |
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# /etc/init.d/bind9 restart |
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In all ``synnefo`` and ``backend`` nodes add in `/etc/resolv.conf`: |
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.. code-block:: console |
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domain example.com |
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search example.com |
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nameserver 4.3.2.1 |
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Test your Setup: |
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++++++++++++++++ |
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Try to ping all FQDNs. |