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Add MaxNoncurrentVersions to NoncurrentExpiration action (#13580)

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This unit allows users to limit the maximum number of noncurrent 
versions of an object.

To enable this rule you need the following *ilm.json*
```
cat >> ilm.json <<EOF
{
    "Rules": [
        {
            "ID": "test-max-noncurrent",
            "Status": "Enabled",
            "Filter": {
                "Prefix": "user-uploads/"
            },
            "NoncurrentVersionExpiration": {
                "MaxNoncurrentVersions": 5
            }
        }
    ]
}
EOF
mc ilm import myminio/mybucket < ilm.json
```
This commit is contained in:
Krishnan Parthasarathi
2021-11-19 17:54:10 -08:00
committed by GitHub
parent 1e2fac054c
commit 3da9ee15d3
16 changed files with 707 additions and 308 deletions
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24
docs/bucket/lifecycle/README.md
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@@ -81,7 +81,29 @@ e.g., To scan objects stored under `user-uploads/` prefix and remove versions ol
}
```
### 3.2 Automatic removal of delete markers with no other versions
### 3.2 Automatic removal of noncurrent versions older than most recent
It is possible to configure automatic removal of noncurrent versions older than the most recent `N` using MinIO specific lifecycle policy extension `MaxNoncurrentVersions`.
e.g, To remove noncurrent versions of all objects older than most recent 5 noncurrent versions under the prefix `user-uploads/`,
```
{
"Rules": [
{
"ID": "Remove noncurrent versions older than",
"Status": "Enabled",
"Filter": {
"Prefix": "users-uploads/"
},
"NoncurrentVersionExpiration": {
"MaxNoncurrentVersions": 5
}
}
]
}
```
### 3.3 Automatic removal of delete markers with no other versions
When an object has only one version as a delete marker, the latter can be automatically removed after a certain number of days using the following configuration: