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fix(opensearchservice): cannot i8g data nodes without EBS #35668

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fix(opensearchservice): cannot i8g data nodes without EBS #35668

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bee0162
feat(opensearchservice): add I8G instance type support for local storage
mazyu36 Oct 3, 2025
55508ac
add uni tests
mazyu36 Oct 3, 2025
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1 change: 1 addition & 0 deletions packages/aws-cdk-lib/aws-opensearchservice/lib/domain.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1649,6 +1649,7 @@ export class Domain extends DomainBase implements IDomain, ec2.IConnectable {
ec2.InstanceClass.R6GD,
ec2.InstanceClass.I4G,
ec2.InstanceClass.I4I,
ec2.InstanceClass.I8G,
ec2.InstanceClass.IM4GN,
ec2.InstanceClass.R7GD,
];
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23 changes: 21 additions & 2 deletions packages/aws-cdk-lib/aws-opensearchservice/test/domain.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2004,6 +2004,7 @@ each(testedOpenSearchVersions).describe('custom error responses', (engineVersion
'im4gn.2xlarge.search',
'i4g.large.search',
'i4i.xlarge.search',
'i8g.4xlarge.search',
'r7gd.xlarge.search',
])('error when %s instance type is specified with EBS enabled', (dataNodeInstanceType) => {
expect(() => new Domain(stack, 'Domain2', {
Expand All @@ -2015,7 +2016,25 @@ each(testedOpenSearchVersions).describe('custom error responses', (engineVersion
volumeSize: 100,
volumeType: EbsDeviceVolumeType.GENERAL_PURPOSE_SSD,
},
})).toThrow(/I3, R6GD, I4G, I4I, IM4GN and R7GD instance types do not support EBS storage volumes./);
})).toThrow(/I3, R6GD, I4G, I4I, I8G, IM4GN and R7GD instance types do not support EBS storage volumes./);
});

test.each([
'i3.2xlarge.search',
'r6gd.large.search',
'im4gn.2xlarge.search',
'i4g.large.search',
'i4i.xlarge.search',
'i8g.4xlarge.search',
'r7gd.xlarge.search',
])('should not throw when %s instance type is specified without EBS enabled', (dataNodeInstanceType) => {
expect(() => new Domain(stack, 'Domain2', {
version: engineVersion,
capacity: {
dataNodeInstanceType,
},
ebs: { enabled: false },
})).not.toThrow();
});

test.each([
Expand Down Expand Up @@ -2056,7 +2075,7 @@ each(testedOpenSearchVersions).describe('custom error responses', (engineVersion
capacity: {
masterNodeInstanceType,
},
})).toThrow(/EBS volumes are required when using instance types other than R3, I3, R6GD, I4G, I4I, IM4GN or R7GD./);
})).toThrow(/EBS volumes are required when using instance types other than R3, I3, R6GD, I4G, I4I, I8G, IM4GN or R7GD./);
});

test('can use compatible master instance types that does not have local storage when data node type is i3 or r6gd', () => {
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