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cbbackupmgr examine

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    Searches one or more backups by key for a specific document

    SYNOPSIS

    cbbackupmgr examine [--archive <archive_dir>] [--repo <repo_name>]
                        [--collection-string <collection_string>] [--key <key>]
                        [--start start] [--end end] [--search-partial-backups]
                        [--json] [--no-meta] [--no-xattrs] [--no-value]
                        [--hex-meta] [--hex-xattrs] [--hex-value]
                        [--obj-access-key-id <access_key_id>]
                        [--obj-cacert <cert_path>] [--obj-endpoint <endpoint>]
                        [--obj-no-ssl-verify] [--obj-region <region>]
                        [--obj-staging-dir <staging_dir>]
                        [--obj-secret-access-key <secret_access_key>]
                        [--s3-force-path-style] [--s3-log-level <level>]

    DESCRIPTION

    Examine is an Enterprise Edition command used to find information about a given key. Examine will produce a timeline highlighting events related to the key during the backups e.g. first appearance, mutation and deletion.

    You may optionally use the --start and --end flags to limit the range of backups for which an event timeline is produced. See START AND END for more information.

    Examine also supports outputting the event timeline in multiple formats, including being able to hexdump/include/omit portions of a document.

    OPTIONS

    Below is a list of parameters for the examine command.

    Required

    -a,--archive <archive_dir>

    The archive directory to examine. When using examine against an archive stored in S3 prefix the archive path with s3://${BUCKET_NAME}/

    -r,--repository <repo_name>

    The name of the backup repository to examine.

    --collection-string <collection_string>

    A dot separated collection string representing the bucket/collection which contains the key you are trying to examine. When interacting with a collection unaware backup the collection string must only contain a bucket e.g. --collection-string default. When interacting with a collection aware backup the collection string must contain the path to a collection e.g. --collection-string default.scope.collection. Note that you may omit the scope/collection for collection aware backups which only contain the _default scope and collection e.g. --collection-string default is internally translated to --collection-string default._default._default. For more information see COLLECTION AWARE BACKUPS in cbbackupmgr-backup.

    -k,--key

    The name of the key you are trying to find.

    Optional

    --start <start>

    The first backup to examine. See START AND END for information on what values are accepted.

    --end <end>

    The final backup to examine. See START AND END for information on what values are accepted.

    --search-partial-backups

    By default examine will skip backups which are incomplete. This flag may be supplied to attempt to search incomplete backups, however, the resulting search may fail, or not find the key you’re looking for.

    -j,--json

    Return any output as a JSON structure.

    --no-meta

    Do not return any of the documents metadata.

    --no-xattrs

    Do not return any of the documents extended attributes.

    --no-value

    Do not return the documents value.

    --hex-meta

    Return the metadata encoded in hex.

    --hex-xattrs

    Return the extended attributes encoded in hex.

    --hex-value

    Return the value encoded in hex.

    Cloud integration

    Native cloud integration is an Enterprise Edition feature which was introduced in Couchbase Server 6.6.0.

    Required

    --obj-staging-dir <staging_dir>

    When performing an operation on an archive which is located in the cloud such as AWS, the staging directory is used to store local meta data files. This directory can be temporary (it’s not treated as a persistent store) and is only used during the backup. NOTE: Do not use /tmp as the obj-staging-dir. See Disk requirements in cbbackupmgr-cloud for more information.

    Optional

    --obj-access-key-id <access_key_id>

    The access key id which has access to your chosen object store. This option can be omitted when using the shared config functionality provided by your chosen object store. Can alternatively be provided using the CB_OBJSTORE_ACCESS_KEY_ID environment variable.

    --obj-cacert <cert_path>

    Specifies a CA certificate that will be used to verify the identity of the object store being connected to.

    --obj-endpoint <endpoint>

    The host/address of your object store.

    --obj-no-ssl-verify

    Skips the SSL verification phase when connecting to the object store. Specifying this flag will allow a connection using SSL encryption, but you are vulnerable to a man-in-the-middle attack.

    --obj-region <region>

    The region in which your bucket/container resides. For AWS this option may be omitted when using the shared config functionality. See the AWS section of the cloud documentation for more information.

    --obj-secret-access-key <secret_access_key>

    The secret access key which has access to you chosen object store. This option can be omitted when using the shared config functionality provided by your chosen object store. Can alternatively be provided using the CB_OBJSTORE_SECRET_ACCESS_KEY environment variable.

    --obj-log-level <level>

    Set the log level for the cloud providers SDK. By default logging will be disabled. Valid options are cloud provider specific and are listed below.

    The valid options for the AWS SDK are debug, debug-with-signing, debug-with-body, debug-with-request-retries, debug-with-request-errors, and debug-with-event-stream-body.

    The valid options for the Azure SDK are none, fatal, panic, error, warning, info and debug.

    --obj-auth-by-instance-metadata

    By default authenticating using instance metadata is disabled, supplying this flag will allow the fetching credentials/auth tokens from (VM) internal instance metadata endpoints.

    AWS S3 Options

    Optional
    --s3-force-path-style

    By default the updated virtual style paths will be used when interfacing with AWS S3. This option will force the AWS SDK to use the alternative path style URLs which are often required by S3 compatible object stores.

    START AND END

    This sub-command accepts a --start and --end flag. These flags accept multiple values to allow you to flexibly operate on a range of backups.

    Indexes

    Indexes may be supplied to operate on a range of backups, for example --start 1 --end 2 will include start at the first backup and will finish with the second backup. Note that the first backup is 1 and not 0 and that the --end flag is inclusive.

    Short Dates

    Short dates may be supplied in the format day-month-year. For example --start 01-08-2020 --end 31-08-2020 will operate on all the backups which were taken during August of 2020. Note that the end date is inclusive.

    When supplying short dates, you may supply start or oldest as a placeholder for the date on which the first backup in this repository was taken. The keywords end or latest may be used as a placeholder for the date last backup in the repository was taken.

    Backup Names

    Backup names may be supplied as they exist on disk. For example --start 2020-08-13T20_01_08.894226137+01_00 --end 2020-08-13T20_01_12.348300092+01_00 will cause the sub-command to operate on all the backups which inclusively fall between these two backups.

    When supplying backup names, you may supply start or oldest as a placeholder for the first backup in the repository. The keywords end or latest may be used as a placeholder for the final backup in the repository.

    SEARCH SPACE

    The examine command supports searching though multiple backups, this section explains how to use examine to search multiple backups and how it behaves when a repository contains backups from an older version or mixed collection aware/unaware backups.

    BACKUPS FROM OLDER VERSIONS OF CBBACKUPMGR

    The examine command only supports searching backups created using a version of cbbackupmgr greater than or equal to 6.5.0.

    When examine encounters a range of backups where no backups can be searched an error will be returned to you.

    When examine encounters a mixed range of backups where one or more backups can be searched examine will skip the old backups and only search the supported backups. Note that a warning will be displayed indicating how many backups were skipped.

    SEARCHING COLLECTION AWARE/UNAWARE BACKUPS

    When searching a collection unaware backup, the --collection-string argument expects only a bucket and will throw an error if provided with a scope or collection.

    When searching a collection aware backup, the --collection-string argument expects a collection in the format bucket.scope.collection and will throw an error if provided with a bucket or scope.

    See the EXAMPLES section for examples of examining collection aware/unaware backups.

    SEARCHING MIXED COLLECTION AWARE/UNAWARE BACKUPS

    When examining a range of backups which transition from collection unaware to collection aware (for example after upgrading the target cluster to 7.0.0) examine will stop search upon hitting the first collection aware backup.

    Examine will print a warning indicating that it stopped searching prematurely, this warning will contain the name of the backup which can be passed into the --start flag to allow you to examine only the collection aware backups.

    $ cbbackupmgr examine -a $PWD/archive -r repo --collection-string 'travel-sample' --key 'airline_10'
    Warning: Finished examining collection unaware backups, 1 collection aware backup(s) remain(s); use the --start/--end flags to examine the collection aware backup(s) starting at '2021-01-27T13_35_53.284474589Z'
    -- Backup 2021-01-27T13_33_08.986105547Z --
    Description: First occurrence of key 'airline_10' in this timeline, document created
    Cluster UUID: 59845c6cdce57b81bd6f450e5043bee7
    Bucket: travel-sample (61ca19c7819478f27e03b398c6a540e7)
    Document:
      Key: airline_10
      Sequence Number: 1
      Deleted: false
      Size: 159B (Key: 10B) (Meta: 29B) (Value: 120B) (XATTRS: 0B)
      Meta:
        Flags: 33554432
        Expiry: 0
        Locktime: 0
        CAS: 1611754171980709888
        Revseqno: 1
        Datatype: 3 (snappy,json)
      Value:
        {
            "callsign": "MILE-AIR",
            "country": "United States",
            "iata": "Q5",
            "icao": "MLA",
            "id": 10,
            "name": "40-Mile Air",
            "type": "airline"
        }

    EXAMPLES

    The examine command can be used to determine whether a collection unaware backup contains a specific document. See COLLECTION AWARE BACKUPS in cbbackupmgr-backup for information on what makes a backup collection aware/unaware.

    $ cbbackupmgr examine -a $PWD/archive -r repo --collection-string 'travel-sample' --key 'airline_10'
    -- Backup 2021-01-27T12_36_59.013718359Z --
    Description: First occurrence of key 'airline_10' in this timeline, document created
    Cluster UUID: d22cb6cbb72f9d6a86b75317478f60b0
    Bucket: travel-sample (2de1c5edcd2daca4a08360c130ea6b19)
    Document:
      Key: airline_10
      Sequence Number: 1
      Deleted: false
      Size: 159B (Key: 10B) (Meta: 29B) (Value: 120B) (XATTRS: 0B)
      Meta:
        Flags: 33554432
        Expiry: 0
        Locktime: 0
        CAS: 1611750671350693888
        Revseqno: 1
        Datatype: 3 (snappy,json)
      Value:
        {
            "id": 10,
            "type": "airline",
            "name": "40-Mile Air",
            "iata": "Q5",
            "icao": "MLA",
            "callsign": "MILE-AIR",
            "country": "United States"
        }

    The same principle applies when searching a collection aware backup, the only difference being that the --collection-string argument requires a collection.

    $ cbbackupmgr examine -a $PWD/archive -r repo --collection-string 'travel-sample.inventory.airline' --key 'airline_10'
    -- Backup 2021-01-27T12_38_21.55739452Z --
    Description: First occurrence of key 'airline_10' in this timeline, document created
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    Collection: airline (10)
    Document:
      Key: airline_10
      Sequence Number: 44
      Deleted: false
      Size: 159B (Key: 10B) (Meta: 29B) (Value: 120B) (XATTRS: 0B)
      Meta:
        Flags: 0
        Expiry: 0
        Locktime: 0
        CAS: 1611751097702088704
        Revseqno: 1
        Datatype: 3 (snappy,json)
      Value:
        {
            "id": 10,
            "type": "airline",
            "name": "40-Mile Air",
            "iata": "Q5",
            "icao": "MLA",
            "callsign": "MILE-AIR",
            "country": "United States"
        }

    When more than one backup exists in a repository, examine will continue searching and output information for each backup it searches.

    $ cbbackupmgr examine -a ~/Projects/couchbase-archive -r repo --collection-string 'travel-sample.inventory.airline' --key 'airline_10'
    -- Backup 2021-01-27T12_38_21.55739452Z --
    Description: First occurrence of key 'airline_10' in this timeline, document created
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    Collection: airline (10)
    Document:
      Key: airline_10
      Sequence Number: 44
      Deleted: false
      Size: 159B (Key: 10B) (Meta: 29B) (Value: 120B) (XATTRS: 0B)
      Meta:
        Flags: 0
        Expiry: 0
        Locktime: 0
        CAS: 1611751097702088704
        Revseqno: 1
        Datatype: 3 (snappy,json)
      Value:
        {
            "id": 10,
            "type": "airline",
            "name": "40-Mile Air",
            "iata": "Q5",
            "icao": "MLA",
            "callsign": "MILE-AIR",
            "country": "United States"
        }
    
    -- Backup 2021-01-27T12_41_13.009708335Z --
    Description: Mutation for document with key 'airline_10'
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    Collection: airline (10)
    Document:
      Key: airline_10
      Sequence Number: 75
      Deleted: false
      Size: 191B (Key: 10B) (Meta: 29B) (Value: 152B) (XATTRS: 0B)
      Meta:
        Flags: 33554438
        Expiry: 0
        Locktime: 0
        CAS: 1611751269058281472
        Revseqno: 2
        Datatype: 3 (snappy,json)
      Value:
        {
            "id": 10,
            "type": "airline",
            "name": "40-Mile Air",
            "iata": "Q5",
            "icao": "MLA",
            "callsign": "MILE-AIR",
            "country": "United States",
            "new_field": "new_value"
        }
    
    -- Backup 2021-01-27T12_42_07.578485175Z --
    Description: Deletion for document with key 'airline_10'
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    Collection: airline (10)
    Document:
      Key: airline_10
      Sequence Number: 76
      Deleted: true
      Size: 39B (Key: 10B) (Meta: 29B) (Value: 0B) (XATTRS: 0B)
      Meta:
        Flags: 0
        Expiry: 0
        Locktime: 0
        CAS: 1611751325090316288
        Revseqno: 3
        Datatype: 0 (binary)
    
    -- Backup 2021-01-27T12_42_18.322132022Z --
    Description: Collection 'airline' dropped
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    
    -- Backup 2021-01-27T12_42_23.72226735Z --
    Description: Scope 'inventory' dropped
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    
    -- Backup 2021-01-27T12_42_34.08410595Z --
    Description: Bucket 'travel-sample' dropped
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    
    -- Backup 2021-01-27T12_42_35.395081659Z --
    Description: Bucket 'travel-sample' not found
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92

    When searching are large range of backups, the --start and --end flags (see START AND END for more information) may be used to filter which backups are searched.

    $ cbbackupmgr examine -a ~/Projects/couchbase-archive -r repo --collection-string 'travel-sample.inventory.airline' --key 'airline_10' --start 2021-01-27T12_42_18.322132022Z --end 2021-01-27T12_42_35.395081659Z
    -- Backup 2021-01-27T12_42_18.322132022Z --
    Description: Collection 'airline' not found
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    Scope: inventory (8)
    
    -- Backup 2021-01-27T12_42_23.72226735Z --
    Description: Scope 'inventory' dropped
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    Bucket: travel-sample (13c11d3be4bfba95f9e4da73bf8d1960)
    
    -- Backup 2021-01-27T12_42_34.08410595Z --
    Description: Bucket 'travel-sample' dropped
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92
    
    -- Backup 2021-01-27T12_42_35.395081659Z --
    Description: Bucket 'travel-sample' not found
    Cluster UUID: 4fb26863aa5224ff97c9f17415c7bd92

    By default, the examine will output binary documents as a hexdump (for the human readable format) and as a hexstring (for the JSON format).

    $ cbbackupmgr examine -a $PWD/archive -r repo --collection-string 'default' --key 'pymc0'
    -- Backup 2021-01-27T14_00_38.445404421Z --
    Description: First occurrence of key 'pymc0' in this timeline, document created
    Cluster UUID: 59845c6cdce57b81bd6f450e5043bee7
    Bucket: default (7c8cb0f0bb9e2835d79e8dd91a5b0d67)
    Document:
      Key: pymc0
      Sequence Number: 1
      Deleted: false
      Size: 84B (Key: 5B) (Meta: 29B) (Value: 50B) (XATTRS: 0B)
      Meta:
        Flags: 0
        Expiry: 0
        Locktime: 0
        CAS: 1611756033524170752
        Revseqno: 1
        Datatype: 0 (binary)
      Value:
        00000000  4d 59 4e 42 49 51 50 4d  5a 4a 50 4c 53 47 51 45  |MYNBIQPMZJPLSGQE|
        00000010  4a 45 59 44 54 5a 49 52  57 5a 54 45 4a 44 58 43  |JEYDTZIRWZTEJDXC|
        00000020  56 4b 50 52 44 4c 4e 4b  54 55 47 52 50 4f 51 49  |VKPRDLNKTUGRPOQI|
        00000030  42 5a                                             |BZ|
    
    $ cbbackupmgr examine -a $PWD/archive -r repo --collection-string 'default' --key 'pymc0' --json | jq
    [
      {
        "backup": "2021-01-27T14_00_38.445404421Z",
        "event_type": 1,
        "event_description": "First occurrence of key 'pymc0' in this timeline, document created",
        "cluster_uuid": "59845c6cdce57b81bd6f450e5043bee7",
        "bucket_uuid": "7c8cb0f0bb9e2835d79e8dd91a5b0d67",
        "scope_id": 0,
        "collection_id": 0,
        "document": {
          "key": "pymc0",
          "sequence_number": 1,
          "value": "4d594e424951504d5a4a504c534751454a455944545a4952575a54454a445843564b5052444c4e4b54554752504f5149425a",
          "metadata": {
            "flags": 0,
            "expiry": 0,
            "locktime": 0,
            "cas": 1611756033524170800,
            "revseqno": 1,
            "datatype": 0
          },
          "deleted": false
        }
      }
    ]

    ENVIRONMENT AND CONFIGURATION VARIABLES

    CB_ARCHIVE_PATH

    Specifies the path to the backup archive. If the archive path is supplied as a command line argument then this value is overridden.

    CB_OBJSTORE_STAGING_DIRECTORY

    Specifies the path to the staging directory. If the --obj-staging-dir argument is provided in the command line then this value is overridden.

    CB_OBJSTORE_REGION

    Specifies the object store region. If the --obj-region argument is provided in the command line then this value is overridden.

    CB_OBJSTORE_ACCESS_KEY_ID

    Specifies the object store access key id. If the --obj-access-key-id argument is provided in the command line this value is overridden.

    CB_OBJSTORE_SECRET_ACCESS_KEY

    Specifies the object store secret access key. If the --obj-secret-access-key argument is provided in the command line this value is overridden.

    CB_AWS_ENABLE_EC2_METADATA

    By default cbbackupmgr will disable fetching EC2 instance metadata. Setting this environment variable to true will allow the AWS SDK to fetch metadata from the EC2 instance endpoint.

    CBBACKUPMGR

    Part of the cbbackupmgr suite