Disable BuildFailureWeigher
Disable the BuildFailureWeigher used when weighting hosts during
instance scheduling. A single build failure will result in a
-1000000 weighting which effectively excludes the hypervisor
from the scheduling decision.
A bad image can result in build failures resulting in a heavy
load on hypervisors which have not had a build failure with
those that have effectively being ignored; the build failure
count will be reset on a successful build but due to the high
weighting this won't happen until all resources on known good
hypervisors have been completely consumed.
Change-Id: I4d4367ef20e2a20aee1e26d4a0ec69cad2ac69d6
Closes-Bug: 1818239
(cherry picked from commit c5029e9831
)
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@ -184,6 +184,13 @@ enabled_filters = {{ scheduler_default_filters }},{{ additional_neutron_filters
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enabled_filters = {{ scheduler_default_filters }}
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{% endif %}
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# Disable BuildFailureWeigher as any failed build will result
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# in a very low weighting for the hypervisor, resulting in
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# instances all being scheduled to hypervisors with no build
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# failures.
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# https://bugs.launchpad.net/charm-nova-cloud-controller/+bug/1818239
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build_failure_weight_multiplier = 0.0
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[api]
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auth_strategy=keystone
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{% if vendor_data or vendor_data_url -%}
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@ -190,6 +190,13 @@ enabled_filters = {{ scheduler_default_filters }},{{ additional_neutron_filters
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enabled_filters = {{ scheduler_default_filters }}
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{% endif %}
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# Disable BuildFailureWeigher as any failed build will result
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# in a very low weighting for the hypervisor, resulting in
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# instances all being scheduled to hypervisors with no build
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# failures.
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# https://bugs.launchpad.net/charm-nova-cloud-controller/+bug/1818239
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build_failure_weight_multiplier = 0.0
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[api]
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auth_strategy=keystone
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{% if vendor_data or vendor_data_url -%}
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