Lab 3.2 Add second node update

serewicz

Upon the ./stack.sh running on the compute-node there became necessary an extra step of running nova-manage cell_v2 discover_hosts to properly update the database on the cloud controller. The DevStack community have created a new process to add another node to the cluster, which will cause the nova-manage command to error out. 

The new five step process, which I am putting into the course book now, is as follows:

When the *compute-node* finishes the ./stack.sh <span class="hljs-keyword" style="box-sizing: inherit; font-weight: bold;">then</span> on the **devstack-cc** run this process:

<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">1</span>) Source the config file as admin

    ubuntu@devstack-cc:~$ <span class="hljs-built_in" style="box-sizing: inherit; font-weight: bold;">cd</span> devstack/

    ubuntu@devstack-cc:~/devstack$ <span class="hljs-built_in" style="box-sizing: inherit; font-weight: bold;">source</span> openrc admin
    WARNING: setting legacy OS_TENANT_NAME to support cli tools.


<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2</span>) Verify the compute-host was added and is up.

    ubuntu@devstack-cc:~/devstack$ nova service-list --binary nova-compute
    +--------------------------------------+--------------+--------------+------+--------
    -+-------+----------------------------+-----------------+-------------+
    | Id                                   | Binary       | Host         | Zone | Status
     | State | Updated_at                 | Disabled Reason | Forced down |
    +--------------------------------------+--------------+--------------+------+--------
    -+-------+----------------------------+-----------------+-------------+
    | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">32</span>fa0ccd-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">45</span>a8-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">45</span>f5-b2e7-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2</span>d84e7377eb3 | nova-compute | devstack-cc  | nova | enabled
     | up    | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2017</span>-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">12</span>-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">19</span>T19:<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">49</span>:<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">35.000000</span> | -               | False       |
    | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">9</span>fc15015<span class="hljs-operator" style="box-sizing: inherit;">-d</span>150-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">478</span>f-ba4f-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">764</span>fe4ed03c9 | nova-compute | compute-node | nova | enabled
     | up    | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2017</span>-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">12</span>-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">19</span>T19:<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">49</span>:<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">35.000000</span> | -               | False       |
    +--------------------------------------+--------------+--------------+------+--------
    -+-------+----------------------------+-----------------+-------------+


<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">3</span>) Verify the hypervisor has not yet been added.

    ubuntu@devstack-cc:~/devstack$ openstack hypervisor list
    +----+---------------------+-----------------+--------------+-------+
    | ID | Hypervisor Hostname | Hypervisor Type | Host IP      | State |
    +----+---------------------+-----------------+--------------+-------+
    |  <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">1</span> | devstack-cc         | QEMU            | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">192.168</span>.<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">97.1</span> | up    |
    +----+---------------------+-----------------+--------------+-------+


<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">4</span>) Use a script to join the hypervisor to the cloud.

    ubuntu@devstack-cc:~/devstack$ ./tools/discover_hosts.sh
    /usr/local/lib/python2.<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">7</span>/dist-packages/pymysql/cursors.py:<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">166</span>: Warning: (<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">1287</span>, u<span class="hljs-string" style="box-sizing: inherit; color: rgb(136, 0, 0);">"'@@t
    x_isolation' is deprecated and will be removed in a future release. Please use '@@tra
    nsaction_isolation' instead"</span>)
      result = self._query(query)
    Found <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2</span> cell mappings.
    Skipping cell0 since it does not contain hosts.
    Getting compute nodes from cell <span class="hljs-string" style="box-sizing: inherit; color: rgb(136, 0, 0);">'cell1'</span>: <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">79</span>bd3053<span class="hljs-operator" style="box-sizing: inherit;">-a</span>007-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">469</span>d-ba72<span class="hljs-operator" style="box-sizing: inherit;">-d</span>7b106d08568
    Found <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">1</span> unmapped computes <span class="hljs-keyword" style="box-sizing: inherit; font-weight: bold;">in</span> cell: <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">79</span>bd3053<span class="hljs-operator" style="box-sizing: inherit;">-a</span>007-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">469</span>d-ba72<span class="hljs-operator" style="box-sizing: inherit;">-d</span>7b106d08568
    Checking host mapping <span class="hljs-keyword" style="box-sizing: inherit; font-weight: bold;">for</span> compute host <span class="hljs-string" style="box-sizing: inherit; color: rgb(136, 0, 0);">'compute-node'</span>: b3caa6f3-fe33-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">49</span>af-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">839</span>a-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">375813</span>
    <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">8</span>af2b1
    Creating host mapping <span class="hljs-keyword" style="box-sizing: inherit; font-weight: bold;">for</span> compute host <span class="hljs-string" style="box-sizing: inherit; color: rgb(136, 0, 0);">'compute-node'</span>: b3caa6f3-fe33-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">49</span>af-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">839</span>a-<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">375813</span>
    <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">8</span>af2b1


<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">5</span>) Verify the compute-host has been added.

    ubuntu@devstack-cc:~/devstack$ openstack hypervisor list
    +----+---------------------+-----------------+--------------+-------+
    | ID | Hypervisor Hostname | Hypervisor Type | Host IP      | State |
    +----+---------------------+-----------------+--------------+-------+
    |  <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">1</span> | devstack-cc         | QEMU            | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">192.168</span>.<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">97.1</span> | up    |
    |  <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">2</span> | compute-node        | QEMU            | <span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">192.168</span>.<span class="hljs-number" style="box-sizing: inherit; color: rgb(0, 136, 0);">97.2</span> | up    |
    +----+---------------------+-----------------+--------------+-------+
    ubuntu@devstack-cc:~/devstack$

 

Best regards,