[ClusterLabs] pcs: how to properly unset a value for resource/stonith? [Was: (no subject)]

[Jan Pokorný]

Hello ArekW,

first of all, gentle reminder to always set the subject for the posts
to the list (or, as a rule of thumb, in any email-based conversation).

On 20/07/17 08:43 +0200, Klaus Wenninger wrote:
> On 07/20/2017 07:21 AM, ArekW wrote:
>> Hi, How to properly unset a value with pcs? Set to false or null gives error:
>> 
>> # pcs stonith update vbox-fencing verbose=false --force
>> or
>> # pcs stonith update vbox-fencing verbose= --force
>> 
> The latter should be fine actually.

True:

  # rm test.cib
  # yum install -y fence-virt

  # pcs -f test.cib stonith create fence-virt-069 fence_xvm auth=sha256 \
    hash=sha256 key_file=/etc/cluster/fence_xvm.key timeout=5 \
    pcmk_host_map=virt-069:virt-069.example.com
  # pcs -f test.cib cluster cib scope=resources
  <resources>
    <primitive class="stonith" id="fence-virt-069" type="fence_xvm">
      <instance_attributes id="fence-virt-069-instance_attributes">
        <nvpair id="fence-virt-069-instance_attributes-auth" name="auth" value="sha256"/>
        <nvpair id="fence-virt-069-instance_attributes-hash" name="hash" value="sha256"/>
        <nvpair id="fence-virt-069-instance_attributes-key_file" name="key_file" value="/etc/cluster/fence_xvm.key"/>
        <nvpair id="fence-virt-069-instance_attributes-pcmk_host_map" name="pcmk_host_map" value="virt-069:virt-069.example.com"/>
        <nvpair id="fence-virt-069-instance_attributes-timeout" name="timeout" value="5"/>
      </instance_attributes>
      <operations>
        <op id="fence-virt-069-monitor-interval-60s" interval="60s" name="monitor"/>
      </operations>
    </primitive>
  </resources>

  # pcs -f test.cib stonith update fence-virt-069 key_file=
  # pcs -f test.cib cluster cib scope=resources
  <resources>
    <primitive class="stonith" id="fence-virt-069" type="fence_xvm">
      <instance_attributes id="fence-virt-069-instance_attributes">
        <nvpair id="fence-virt-069-instance_attributes-auth" name="auth" value="sha256"/>
        <nvpair id="fence-virt-069-instance_attributes-hash" name="hash" value="sha256"/>
        <nvpair id="fence-virt-069-instance_attributes-pcmk_host_map" name="pcmk_host_map" value="virt-069:virt-069.example.com"/>
        <nvpair id="fence-virt-069-instance_attributes-timeout" name="timeout" value="5"/>
      </instance_attributes>
      <operations>
        <op id="fence-virt-069-monitor-interval-60s" interval="60s" name="monitor"/>
      </operations>
      <meta_attributes id="fence-virt-069-meta_attributes"/>
    </primitive>
  </resources>

-- 
Jan (Poki)
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