如何使用 AWS CLI 获取 RDS 数据库实例的最新快照的名称？

Question

Using the AWS CLI, how can I get the most recent snapshot for a particular DB instance?

I can get them through the GUI easily but I'd like to automate it.

Answer 1

You can use the aws rds describe-db-snapshots CLI command to get a list of DB snapshots, and then run a local query using --query to get the latest DB snapshot using the SnapshotCreateTime field.

SnapshotCreateTime -> (timestamp)

Specifies when the snapshot was taken in Coordinated Universal Time (UTC). Changes for the copy when the snapshot is copied.

Something like this:

aws rds describe-db-snapshots \
    --db-instance-identifier your-id \
    --query "sort_by(DBSnapshots, &SnapshotCreateTime)[-1].{id:DBSnapshotIdentifier,time:SnapshotCreateTime}"

Note that this query sorts snapshots by their ascending SnapshotCreateTime and then simply takes the last one in the list (as dictated by [-1]), which will be the one that was last created.

[Added] if you're looking for snapshots of Aurora DB clusters then you'd have to use describe-db-cluster-snapshots in place of describe-db-snapshots , but otherwise the process is similar: use DBClusterSnapshots and DBClusterSnapshotIdentifier (in place of DBSnapshots and DBSnapshotIdentifier ).