1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.application.validation.change;
import com.yahoo.config.application.api.ValidationId;
import com.yahoo.config.provision.ClusterResources;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.vespa.model.VespaModel;
import com.yahoo.vespa.model.application.validation.Validation.ChangeContext;
/**
* Checks that no cluster sizes are reduced too much in one go.
*
* @author bratseth
*/
public class ResourcesReductionValidator implements ChangeValidator {
@Override
public void validate(ChangeContext context) {
for (var clusterId : context.previousModel().allClusters()) {
if (context.model().allClusters().contains(clusterId))
validate(clusterId, context);
}
}
private void validate(ClusterSpec.Id clusterId, ChangeContext context) {
ClusterResources current = clusterResources(clusterId, context.previousModel());
ClusterResources next = clusterResources(clusterId, context.model());
if (current == null || next == null) return; // No request recording - test
if (current.nodeResources().isUnspecified() || next.nodeResources().isUnspecified()) {
// Self-hosted - unspecified resources; compare node count
int currentNodes = current.nodes();
int nextNodes = next.nodes();
if (nextNodes < 0.5 * currentNodes && nextNodes != currentNodes - 1) {
context.invalid(ValidationId.resourcesReduction,
"Size reduction in '" + clusterId.value() + "' is too large: " +
"To guard against mistakes, the new max nodes must be at least 50% of the current nodes. " +
"Current nodes: " + currentNodes + ", new nodes: " + nextNodes);
}
}
else {
NodeResources currentResources = current.totalResources();
NodeResources nextResources = next.totalResources();
if (nextResources.vcpu() < 0.5 * currentResources.vcpu() ||
nextResources.memoryGb() < 0.5 * currentResources.memoryGb() ||
nextResources.diskGb() < 0.5 * currentResources.diskGb())
context.invalid(ValidationId.resourcesReduction,
"Resource reduction in '" + clusterId.value() + "' is too large: " +
"To guard against mistakes, the new max resources must be at least 50% of the current " +
"max resources in all dimensions. " +
"Current: " + currentResources.withBandwidthGbps(0) + // (don't output bandwidth here)
", new: " + nextResources.withBandwidthGbps(0));
}
}
/**
* If the given requested cluster resources does not specify node resources, return them with
* the current node resources of the cluster, as that is what unspecified resources actually resolved to.
* This will always yield specified node resources on hosted instances and never on self-hosted instances.
*/
private ClusterResources clusterResources(ClusterSpec.Id id, VespaModel model) {
if ( ! model.provisioned().all().containsKey(id)) return null;
ClusterResources resources = model.provisioned().all().get(id).maxResources();
if ( ! resources.nodeResources().isUnspecified()) return resources;
var containerCluster = model.getContainerClusters().get(id.value());
if (containerCluster != null) {
if ( ! containerCluster.getContainers().isEmpty())
return resources.with(containerCluster.getContainers().get(0).getHostResource().advertisedResources());
}
var contentCluster = model.getContentClusters().get(id.value());
if (contentCluster != null) {
var searchCluster = contentCluster.getSearch();
if ( ! searchCluster.getSearchNodes().isEmpty())
return resources.with(searchCluster.getSearchNodes().get(0).getHostResource().advertisedResources());
}
return resources; // only expected for admin clusters
}
}
|
