asrestore command-line options

The asrestore utility restores backups created with asbackup. If the namespace on the cluster already contains existing records, a configurable write policy determines which records take precedence - records in the namespace or records from the backup. The Write Policy section on the overview page has more details on this.

If a transaction fails it is retried according to --max-retries and --retry-scale-factor. By default these are 5 and 150ms respectively. An exponential backoff strategy is followed where the delay is retry-scale-factor * 2 ** (retry_attempts - 1), or 0 on the first try. If --max-retries is exceeded the transaction is counted as a failure in the info level log output. The specific errors in which a retry is not affected are "record exists" (when the --unique option is used), "generation mismatch" (unless if the --no-generation option is used) and "invalid username or password".

When run with the --directory option, asrestore expects multiple .asb backup files in the given directory. Alternatively, --input-file makes asrestore read the complete backup from the given single file. If - is specified as the file, asrestore reads the backup from stdin. This allows for pipelines:

cat backup.asb.gz | gunzip | asrestore --input-file - [...]

Required permissions

Access requirements for the asrestore utility depend on what kind of objects exist in the namespace.

• If the namespace contains no user-defined functions or secondary indexes, read-write is the minimum necessary access role.

• If the namespace contains user-defined functions, udf-admin is the minimum necessary access role to restore UDFs for server 6.0 or newer. Otherwise, data-admin can be used.

• If the namespace contains secondary indexes, sindex-admin is the minimum necessary access role to restore secondary indexes for server 6.0 or newer, otherwise, data-admin can be used.

For more information about Aerospike's role-based access control system, see Privileges, permissions, and scopes.

Usage

The -Z or --help option of asrestore gives an overview of all supported command line options.

asrestore --help

The most basic form of running asrestore is to just specify the cluster to restore (--host) and the local directory containing the backup files (--directory). Suppose that we have a cluster that contains a node with IP address 1.2.3.4. To restore a backup from directory backup_2015_08_24, we would issue the following command.

asrestore --host 1.2.3.4 --directory backup_2015_08_24

By default, the backup is restored to the namespace that it was taken from. The --namespace option can be used to restore to a different namespace. Suppose that the previous backup example was taken from namespace test, and you want to restore it to namespace prod. Issue the following command:

asrestore --host 1.2.3.4 --directory backup_2015_08_24 --namespace test,prod

Connection Options

Option	Default	Description
-h HOST or --host HOST	127.0.0.1	The host that acts as the entry point to the cluster. Any of the cluster nodes can be specified. The remaining cluster nodes will be automatically discovered.
-p PORT or --port PORT	3000	Port to connect to.
-U USER or --user USER	-	User name with write permission. Mandatory if the server has security enabled.
-P PASSWORD or --password	-	Password to authenticate the given user. The first form passes the password on the command line. The second form prompts for the password.
-A or --auth	INTERNAL	Set authentication mode when user and password are defined. Modes are (INTERNAL, EXTERNAL, EXTERNAL_INSECURE, PKI) and the default is INTERNAL. This mode must be set EXTERNAL when using LDAP.
-t THREADS or --parallel THREADS	20	The number of client threads to spawn for writing to the cluster. Higher numbers mean faster restores, which may, however, have a negative impact on server performance.
--tls-enable	disabled	Indicates a TLS connection should be used.
-S or --services-alternate	false	Use to connect to alternate-access-address when the cluster nodes publish IP addresses through access-address which are not accessible over WAN and alternate IP addresses accessible over WAN through alternate-access-address.

Timeout Options

Option	Default	Description
-T TIMEOUT or --timeout TIMEOUT	10000	Timeout (ms) for Aerospike commands to write records, create indexes and create UDFs.
--socket-timeout MS	10000	Socket timeout for write transactions in milliseconds. If this value is 0, it is set to total-timeout. If both are 0, there is no socket idle time limit.
--total-timeout MS	0	Total socket timeout in milliseconds. If this value is 0 and --timeout is set, then the --timeout value is used as the write transaction timeout. Default is 0, that is, no timeout.
--max-retries N	5	Maximum number of retries before aborting the current write transaction.
--retry-scale-factor MS	150000 (150ms)	The scale factor to use in the exponential backoff retry strategy, in microseconds. Note: --retry-delay and --sleep-between-retries are deprecated in favor of --retry-scale-factor.

TLS Options

Option	Default	Description
--tls-cafile=TLS_CAFILE		Path to a trusted CA certificate file.
--tls-capath=TLS_CAPATH		Path to a directory of trusted CA certificates.
--tls-name=TLS_NAME		The default TLS name used to authenticate each TLS socket connection. Note: this must also match the cluster name.
--tls-protocols=TLS_PROTOCOLS		Set the TLS protocol selection criteria. This format is the same as Apache's SSL Protocol. If not specified the asrestore will use -all +TLSv1.2 if has support for TLSv1.2, otherwise it will be -all +TLSv1.
--tls-cipher-suite=TLS_CIPHER_SUITE		Set the TLS cipher selection criteria. The format is the same as OpenSSL's Cipher List Format.
--tls-keyfile=TLS_KEYFILE		Path to the key for mutual authentication (if Aerospike Cluster is supporting it).
--tls-keyfile-password=TLS_KEYFILE_PASSWORD		Password to load protected tls-keyfile. It can be one of the following: 1) Environment varaible: env:VAR 2) File: file:PATH 3) String: PASSWORD User will be prompted on command line if --tls-keyfile-password specified and no password is given.
--tls-certfile=TLS_CERTFILE <path>		Path to the chain file for mutual authentication (if Aerospike Cluster is supporting it).
--tls-cert-blacklist PATH		Path to a certificate blocklist file. The file should contain one line for each blocklisted certificate. Each line starts with the certificate serial number expressed in hex. Each entry may optionally specify the issuer name of the certificate (serial numbers are only required to be unique per issuer). Example: 867EC87482B2 /C=US/ST=CA/O=Acme/OU=Engineering/CN=TestChainCA
--tls-crl-check		Enable CRL checking for leaf certificate. An error occurs if a valid CRL files cannot be found in TLS_CAPATH.
--tls-crl-checkall		Enable CRL checking for entire certificate chain. An error occurs if a valid CRL files cannot be found in TLS_CAPATH.
--tls-log-session-info		Enable logging session information for each TLS connection.

TLSNAME is only used when connecting with a secure TLS enabled server. The following example restores a cluster backup to node 1.2.3.4 using the default Aerospike port of 3000 with TLS configured.

HOST is "HOST:TLSNAME:PORT,...".

asrestore --host 1.2.3.4:cert1:3000 --directory backup_2015_08_24 --namespace test --tls-enable --tls-cafile /cluster_name.pem --tls-protocols TLSv1.2 --tls-keyfile /cluster_name.key --tls-certfile /cluster_name.pem

Input Options

Option	Default	Description
-d PATH or --directory PATH	-	Directory from which to read the .asb backup files. Mandatory, unless --input-file is given.
-i PATH or --input-file PATH	-	The single file from which to read the backup. - means stdin. Mandatory, unless --directory is given.
-N BANDWIDTH, TPS or --nice BANDWIDTH, TPS	-	Throttles asrestore's read operations from the backup file(s) to not exceed the given I/O bandwidth in MiB/s and its database write operations to not exceed the given number of transactions per second. Useful to limit the impact of asrestore on server performance.
-y COMPRESSION_ALG or --compress COMPRESSION_ALG	none	The decompression algorithm to be used on backup files as they are read. This option must match that used when taking the backup. The options available are zstd. Refer to compression and encryption.
-z ENCRYPTION_ALG or --encrypt ENCRYPTION_ALG	none	The decryption algorithm to be used on backup files as they are read. This option must match that used when taking the backup. The options available are aes128 and aes256. This option must be accompanied by either --encryption-key-file or encryption-key-env. Refer to compression and encryption.

Data Selection Options

Option	Default	Description
-n ORIGINAL-NS,NEW-NS or --namespace ORIGINAL-NS,NEW-NS	Original namespace	Namespace to be restored. By default, asrestore restores a backup to the namespace from which it was taken. If this option is specified and the namespace from which the backup was taken does not match ORIGINAL-NS, asrestore aborts with an error. This ensures that we restore the data that we intend to restore. If NEW-NS is specified, the backup will be restored to NEW-NS instead of the namespace from which it was taken.
-s SET1,SET2,... or --set-list SET1,SET2,...	All sets	The sets to restore.
-B BIN1,BIN2,... or --bin-list BIN1,BIN2,...	All bins	The bins to restore.
-R or --no-records	-	Do not restore any record data (metadata or bin data). By default, asrestore restores record data, secondary index definitions, and UDF modules.
-I or --no-indexes	-	Do not restore any secondary index definitions.
-F or --no-udfs	-	Do not restore any UDF modules.
-K or --ignore-record-error	false	Ignore permanent record specific error. For example, AEROSPIKE_RECORD_TOO_BIG. By default such errors are not ignored and asrestore terminates. Optional: Use verbose mode to see errors in detail.

Write Policy Options

Option	Default	Description
-u or --unique	-	Existing records take precedence. With this option, only records that do not exist in the namespace are restored, regardless of generation numbers. If a record exists in the namespace, the record from the backup is ignored. Note: this option is mutually exclusive to --replace and --no-generation.
-g or --no-generation	-	Records from backups take precedence. This option disables the generation check. With this option, records from the backup always overwrite records that already exist in the namespace, regardless of generation numbers. Note: this option is mutually exclusive to --unique. Warning: by using this option you may lose a more recent version of your data by overwriting it with an older version.
-r or --replace	-	Replace records. This controls how records from the backup overwrite existing records in the namespace. By default, restoring a record from a backup only replaces the bins contained in the backup; all other bins of an existing record remain untouched. With this option, the existing record is completely replaced; that is, any bins that are not contained in the backup are discarded. This option still does a generation check by default and would need to be combined with the -g option if no generation check is desired. Note: this option is mutually exclusive to --unique.
-l or --extra-ttl N	-	For records with expirable void-times, add N seconds of extra-ttl to the recorded void-time.

Transaction Processing Options

Option	Default	Description
--batch-size N	128 or 16	The max allowed number of records per C client async batch write call. Default is 128 with batch writes enabled, or 16 without batch writes. Without batch writes, records are grouped and written in a logical "batch".
--max-async-batches N	32	The max number of outstanding async record batch write calls at a time. For pre-6.0 servers, batches are only a logical grouping of records, and each record is uploaded individually. The true max number of async Aerospike calls would then be max-async-batches * batch-size.
--disable-batch-writes	-	Disables the use of batch writes when restoring records to the Aerospike cluster. By default, the cluster is checked for batch write support, so only set this flag if you explicitly don't want batch writes to be used or asrestore is failing to recognize that batch writes are disabled and is failing to work because of it.
--event-loops N	1	The number of C client event loops to initialize for processing of asynchronous Aerospike transactions.

Restore from S3

To restore files from Amazon S3, prefix file/directory names with s3://BUCKET/KEY, where BUCKET is the name of the S3 bucket to download from, and KEY is the key of the object to download/prefix of files in the S3 "directory". If using the default S3 endpoint, --s3-region REGION must be set to the region that the bucket you're uploading to is in. If using another endpoint, specify that endpoint with --s3-endpoint-override URL.

Files are downloaded in chunks of 5MB, and the maximum number of simultaneous downloads across all threads is controlled with --s3-max-async-downloads.

Option	Default	Description
--s3-region REGION	-	Sets the S3 region of the bucket being uploaded to/downloaded from. Must be set if using the default S3 endpoint.
--s3-endpoint-override URL	-	Sets the S3 endpoint to use. Must point to an S3-compatible storage system.
--s3-profile PROFILE_NAME	default	Sets the S3 profile to use for credentials.
--s3-max-async-downloads N	32	The maximum number of simultaneous download requests from S3.
--s3-bucket BUCKET	-	The S3 bucket to use for all S3 objects. With this option given, S3 paths are then interpreted as s3://KEY, that is, the bucket name should be omitted from the path.
--s3-log-level LEVEL	Fatal	The log level of the AWS S3 C++ SDK. The possible levels are, from least to most granular. Off Fatal Error Warn Info Debug Trace

Example

To restore all records to an S3 bucket test-bucket in region us-west-1 under directory test-dir:

asrestore -d s3://test-bucket/test-dir --s3-region us-west-1

Example

Same example but using --s3-bucket.

asrestore -d s3://test-dir --s3-region us-west-1 --s3-bucket test-bucket

Configuration File Options

asrestore can be configured by using tools configuration files. Refer to Aerospike Tools Configuration for more details. The following options affect configuration file behavior.

Option	Default	Description
--no-config-file	disabled	Do not read any configuration file. Mutually exclusive to --only-config-file.
--instance NAME	-	Section with these instance is read. For example, in case instance a is specified sections cluster_a, asrestore_a is read.
--config-file PATH	-	Read this file after default configuration file.
--only-config-file PATH	-	Read only this configuration file. Mutually exclusive to --no-config-file.

Other Options

Option	Default	Description
-v or --verbose	disabled	Output considerably more information about the running restore.
-L or --indexes-last	-	Create indexes after restoring everything else. By default, indexes are restored before everything else, which can prevent costly SSD reads required to build the indexes.
-w or --wait	-	Wait for secondary indexes to finish building before proceeding. Wait for restored UDFs to be distributed across the cluster.
-m or --machine PATH	-	Output machine-readable status updates to the given path, typically a FIFO.

info

If you would like to change the target set to which to restore data, contact Aerospike Support for assistance.

Resource usage

For more information about backup and restore required resources asbackup and asrestore resource usage.