VictoriaMetrics/app/vmrestore/README.md

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# vmrestore
`vmrestore` restores data from backups created by [vmbackup](https://docs.victoriametrics.com/vmbackup.html).
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Restore process can be interrupted at any time. It is automatically resumed from the interruption point
when restarting `vmrestore` with the same args.
## Usage
VictoriaMetrics must be stopped during the restore process.
Run the following command to restore backup from the given `-src` into the given `-storageDataPath`:
```console
./vmrestore -src=<storageType>://<path/to/backup> -storageDataPath=<local/path/to/restore>
```
* `<storageType>://<path/to/backup>` is the path to backup made with [vmbackup](https://docs.victoriametrics.com/vmbackup.html).
`vmrestore` can restore backups from the following storage types:
* [GCS](https://cloud.google.com/storage/). Example: `-src=gs://<bucket>/<path/to/backup>`
* [S3](https://aws.amazon.com/s3/). Example: `-src=s3://<bucket>/<path/to/backup>`
* [Azure Blob Storage](https://azure.microsoft.com/en-us/products/storage/blobs/). Example: `-src=azblob://<container>/<path/to/backup>`
* Any S3-compatible storage such as [MinIO](https://github.com/minio/minio), [Ceph](https://docs.ceph.com/en/pacific/radosgw/s3/)
or [Swift](https://platform.swiftstack.com/docs/admin/middleware/s3_middleware.html). See [these docs](#advanced-usage) for details.
* Local filesystem. Example: `-src=fs://</absolute/path/to/backup>`. Note that `vmbackup` prevents from storing the backup
into the directory pointed by `-storageDataPath` command-line flag, since this directory should be managed solely by VictoriaMetrics or `vmstorage`.
* `<local/path/to/restore>` is the path to folder where data will be restored. This folder must be passed
to VictoriaMetrics in `-storageDataPath` command-line flag after the restore process is complete.
The original `-storageDataPath` directory may contain old files. They will be substituted by the files from backup,
i.e. the end result would be similar to [rsync --delete](https://askubuntu.com/questions/476041/how-do-i-make-rsync-delete-files-that-have-been-deleted-from-the-source-folder).
## Troubleshooting
* If `vmrestore` eats all the network bandwidth, then set `-maxBytesPerSecond` to the desired value.
* If `vmrestore` has been interrupted due to temporary error, then just restart it with the same args. It will resume the restore process.
## Advanced usage
* Obtaining credentials from a file.
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Add flag `-credsFilePath=/etc/credentials` with following content:
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for s3 (aws, minio or other s3 compatible storages):
```console
[default]
aws_access_key_id=theaccesskey
aws_secret_access_key=thesecretaccesskeyvalue
```
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for gce cloud storage:
```json
{
"type": "service_account",
"project_id": "project-id",
"private_key_id": "key-id",
"private_key": "-----BEGIN PRIVATE KEY-----\nprivate-key\n-----END PRIVATE KEY-----\n",
"client_email": "service-account-email",
"client_id": "client-id",
"auth_uri": "https://accounts.google.com/o/oauth2/auth",
"token_uri": "https://accounts.google.com/o/oauth2/token",
"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
"client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/service-account-email"
}
```
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* Usage with s3 custom url endpoint. It is possible to use `vmrestore` with s3 api compatible storages, like minio, cloudian and other.
You have to add custom url endpoint with a flag:
```console
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# for minio:
-customS3Endpoint=http://localhost:9000
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# for aws gov region
-customS3Endpoint=https://s3-fips.us-gov-west-1.amazonaws.com
```
* Run `vmrestore -help` in order to see all the available options:
```console
-concurrency int
The number of concurrent workers. Higher concurrency may reduce restore duration (default 10)
-configFilePath string
Path to file with S3 configs. Configs are loaded from default location if not set.
See https://docs.aws.amazon.com/general/latest/gr/aws-security-credentials.html
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-configProfile string
Profile name for S3 configs. If no set, the value of the environment variable will be loaded (AWS_PROFILE or AWS_DEFAULT_PROFILE), or if both not set, DefaultSharedConfigProfile is used
-credsFilePath string
Path to file with GCS or S3 credentials. Credentials are loaded from default locations if not set.
See https://cloud.google.com/iam/docs/creating-managing-service-account-keys and https://docs.aws.amazon.com/general/latest/gr/aws-security-credentials.html
-customS3Endpoint string
Custom S3 endpoint for use with S3-compatible storages (e.g. MinIO). S3 is used if not set
-enableTCP6
Whether to enable IPv6 for listening and dialing. By default, only IPv4 TCP and UDP are used
-envflag.enable
Whether to enable reading flags from environment variables in addition to the command line. Command line flag values have priority over values from environment vars. Flags are read only from the command line if this flag isn't set. See https://docs.victoriametrics.com/#environment-variables for more details
-envflag.prefix string
Prefix for environment variables if -envflag.enable is set
-eula
lib/license: cleanups and prettifications for log messages and docs related to licensing - Make more clear the docs at docs/enterprise.md, so readers could figure out faster on how to obtain enterprise key and how to pass it to VictoriaMetrics Enterprise components. - Fix examples at docs/enterprise.md, which were referring to non-existing `-license-file` command-line flag. The `-licenseFile` command-line flag must be used instead. - Improve the description of `-license*` command-line flags, so users could understand faster how to use them. - Improve the warning message, which is emitted when the deprecated -eula command-line flag is passed, so the user could figure out how to switch faster to -license* command-line flags. - Disallow running VictoriaMetrics components with both -license and -licenseFile command-line flags. - Disallow running VictoriaMetrics components when -licensFile points to an empty file. - Consistently use the phrase "This flag is available only in Enterprise binaries" across all the enterprise-specific command-line flags. - Remove unneeded level of indirection for `noLicenseMessage` and `expiredMessage` string contants in order to improve code readability and maintainability. - Remove unneded `return` statements after `logger.Fatalf()` calls, since these calls exit the app and never return. - Make sure that the info log message about successful license verification is emitted when the license is verified successfully. Previously the error message could be logged when the license payload is invalid or if it misses some required features.
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Deprecated, please use -license or -licenseFile flags instead. By specifying this flag, you confirm that you have an enterprise license and accept the ESA https://victoriametrics.com/legal/esa/ . This flag is available only in Enterprise binaries. See https://docs.victoriametrics.com/enterprise.html
-flagsAuthKey string
Auth key for /flags endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings
-fs.disableMmap
Whether to use pread() instead of mmap() for reading data files. By default, mmap() is used for 64-bit arches and pread() is used for 32-bit arches, since they cannot read data files bigger than 2^32 bytes in memory. mmap() is usually faster for reading small data chunks than pread()
-http.connTimeout duration
Incoming http connections are closed after the configured timeout. This may help to spread the incoming load among a cluster of services behind a load balancer. Please note that the real timeout may be bigger by up to 10% as a protection against the thundering herd problem (default 2m0s)
-http.disableResponseCompression
Disable compression of HTTP responses to save CPU resources. By default, compression is enabled to save network bandwidth
-http.idleConnTimeout duration
Timeout for incoming idle http connections (default 1m0s)
-http.maxGracefulShutdownDuration duration
The maximum duration for a graceful shutdown of the HTTP server. A highly loaded server may require increased value for a graceful shutdown (default 7s)
-http.pathPrefix string
An optional prefix to add to all the paths handled by http server. For example, if '-http.pathPrefix=/foo/bar' is set, then all the http requests will be handled on '/foo/bar/*' paths. This may be useful for proxied requests. See https://www.robustperception.io/using-external-urls-and-proxies-with-prometheus
-http.shutdownDelay duration
Optional delay before http server shutdown. During this delay, the server returns non-OK responses from /health page, so load balancers can route new requests to other servers
-httpAuth.password string
Password for HTTP server's Basic Auth. The authentication is disabled if -httpAuth.username is empty
-httpAuth.username string
Username for HTTP server's Basic Auth. The authentication is disabled if empty. See also -httpAuth.password
-httpListenAddr string
TCP address for exporting metrics at /metrics page (default ":8421")
-internStringCacheExpireDuration duration
The expiry duration for caches for interned strings. See https://en.wikipedia.org/wiki/String_interning . See also -internStringMaxLen and -internStringDisableCache (default 6m0s)
-internStringDisableCache
Whether to disable caches for interned strings. This may reduce memory usage at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringCacheExpireDuration and -internStringMaxLen
-internStringMaxLen int
The maximum length for strings to intern. A lower limit may save memory at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringDisableCache and -internStringCacheExpireDuration (default 500)
lib/license: cleanups and prettifications for log messages and docs related to licensing - Make more clear the docs at docs/enterprise.md, so readers could figure out faster on how to obtain enterprise key and how to pass it to VictoriaMetrics Enterprise components. - Fix examples at docs/enterprise.md, which were referring to non-existing `-license-file` command-line flag. The `-licenseFile` command-line flag must be used instead. - Improve the description of `-license*` command-line flags, so users could understand faster how to use them. - Improve the warning message, which is emitted when the deprecated -eula command-line flag is passed, so the user could figure out how to switch faster to -license* command-line flags. - Disallow running VictoriaMetrics components with both -license and -licenseFile command-line flags. - Disallow running VictoriaMetrics components when -licensFile points to an empty file. - Consistently use the phrase "This flag is available only in Enterprise binaries" across all the enterprise-specific command-line flags. - Remove unneeded level of indirection for `noLicenseMessage` and `expiredMessage` string contants in order to improve code readability and maintainability. - Remove unneded `return` statements after `logger.Fatalf()` calls, since these calls exit the app and never return. - Make sure that the info log message about successful license verification is emitted when the license is verified successfully. Previously the error message could be logged when the license payload is invalid or if it misses some required features.
2023-10-13 11:07:16 +00:00
-license string
Lisense key for VictoriaMetrics Enterprise. See https://victoriametrics.com/products/enterprise/ . Trial Enterprise license can be obtained from https://victoriametrics.com/products/enterprise/trial/ . This flag is available only in Enterprise binaries. The license key can be also passed via file specified by -licenseFile command-line flag
-license.forceOffline
Whether to enable offline verification for VictoriaMetrics Enterprise license key, which has been passed either via -license or via -licenseFile command-line flag. The issued license key must support offline verification feature. Contact info@victoriametrics.com if you need offline license verification. This flag is avilable only in Enterprise binaries
-licenseFile string
Path to file with license key for VictoriaMetrics Enterprise. See https://victoriametrics.com/products/enterprise/ . Trial Enterprise license can be obtained from https://victoriametrics.com/products/enterprise/trial/ . This flag is available only in Enterprise binaries. The license key can be also passed inline via -license command-line flag
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-loggerDisableTimestamps
Whether to disable writing timestamps in logs
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-loggerErrorsPerSecondLimit int
Per-second limit on the number of ERROR messages. If more than the given number of errors are emitted per second, the remaining errors are suppressed. Zero values disable the rate limit
-loggerFormat string
Format for logs. Possible values: default, json (default "default")
-loggerJSONFields string
Allows renaming fields in JSON formatted logs. Example: "ts:timestamp,msg:message" renames "ts" to "timestamp" and "msg" to "message". Supported fields: ts, level, caller, msg
-loggerLevel string
Minimum level of errors to log. Possible values: INFO, WARN, ERROR, FATAL, PANIC (default "INFO")
-loggerOutput string
Output for the logs. Supported values: stderr, stdout (default "stderr")
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-loggerTimezone string
Timezone to use for timestamps in logs. Timezone must be a valid IANA Time Zone. For example: America/New_York, Europe/Berlin, Etc/GMT+3 or Local (default "UTC")
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-loggerWarnsPerSecondLimit int
Per-second limit on the number of WARN messages. If more than the given number of warns are emitted per second, then the remaining warns are suppressed. Zero values disable the rate limit
-maxBytesPerSecond size
The maximum download speed. There is no limit if it is set to 0
Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 0)
-memory.allowedBytes size
Allowed size of system memory VictoriaMetrics caches may occupy. This option overrides -memory.allowedPercent if set to a non-zero value. Too low a value may increase the cache miss rate usually resulting in higher CPU and disk IO usage. Too high a value may evict too much data from the OS page cache resulting in higher disk IO usage
Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 0)
-memory.allowedPercent float
Allowed percent of system memory VictoriaMetrics caches may occupy. See also -memory.allowedBytes. Too low a value may increase cache miss rate usually resulting in higher CPU and disk IO usage. Too high a value may evict too much data from the OS page cache which will result in higher disk IO usage (default 60)
-metricsAuthKey string
Auth key for /metrics endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings
-pprofAuthKey string
Auth key for /debug/pprof/* endpoints. It must be passed via authKey query arg. It overrides httpAuth.* settings
-pushmetrics.extraLabel array
Optional labels to add to metrics pushed to -pushmetrics.url . For example, -pushmetrics.extraLabel='instance="foo"' adds instance="foo" label to all the metrics pushed to -pushmetrics.url
Supports an array of values separated by comma or specified via multiple flags.
-pushmetrics.interval duration
Interval for pushing metrics to -pushmetrics.url (default 10s)
-pushmetrics.url array
Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default, metrics exposed at /metrics page aren't pushed to any remote storage
Supports an array of values separated by comma or specified via multiple flags.
-s3ForcePathStyle
Prefixing endpoint with bucket name when set false, true by default. (default true)
-s3StorageClass string
The Storage Class applied to objects uploaded to AWS S3. Supported values are: GLACIER, DEEP_ARCHIVE, GLACIER_IR, INTELLIGENT_TIERING, ONEZONE_IA, OUTPOSTS, REDUCED_REDUNDANCY, STANDARD, STANDARD_IA.
See https://docs.aws.amazon.com/AmazonS3/latest/userguide/storage-class-intro.html/
-skipBackupCompleteCheck
Whether to skip checking for 'backup complete' file in -src. This may be useful for restoring from old backups, which were created without 'backup complete' file
-src string
Source path with backup on the remote storage. Example: gs://bucket/path/to/backup, s3://bucket/path/to/backup, azblob://container/path/to/backup or fs:///path/to/local/backup
-storageDataPath string
Destination path where backup must be restored. VictoriaMetrics must be stopped when restoring from backup. -storageDataPath dir can be non-empty. In this case the contents of -storageDataPath dir is synchronized with -src contents, i.e. it works like 'rsync --delete' (default "victoria-metrics-data")
-tls
Whether to enable TLS for incoming HTTP requests at -httpListenAddr (aka https). -tlsCertFile and -tlsKeyFile must be set if -tls is set
-tlsCertFile string
Path to file with TLS certificate if -tls is set. Prefer ECDSA certs instead of RSA certs as RSA certs are slower. The provided certificate file is automatically re-read every second, so it can be dynamically updated
-tlsCipherSuites array
Optional list of TLS cipher suites for incoming requests over HTTPS if -tls is set. See the list of supported cipher suites at https://pkg.go.dev/crypto/tls#pkg-constants
Supports an array of values separated by comma or specified via multiple flags.
-tlsKeyFile string
Path to file with TLS key if -tls is set. The provided key file is automatically re-read every second, so it can be dynamically updated
-tlsMinVersion string
Optional minimum TLS version to use for incoming requests over HTTPS if -tls is set. Supported values: TLS10, TLS11, TLS12, TLS13
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-version
Show VictoriaMetrics version
```
## How to build from sources
It is recommended using [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) - see `vmutils-*` archives there.
### Development build
1. [Install Go](https://golang.org/doc/install). The minimum supported version is Go 1.20.
1. Run `make vmrestore` from the root folder of [the repository](https://github.com/VictoriaMetrics/VictoriaMetrics).
It builds `vmrestore` binary and puts it into the `bin` folder.
### Production build
1. [Install docker](https://docs.docker.com/install/).
1. Run `make vmrestore-prod` from the root folder of [the repository](https://github.com/VictoriaMetrics/VictoriaMetrics).
It builds `vmrestore-prod` binary and puts it into the `bin` folder.
### Building docker images
Run `make package-vmrestore`. It builds `victoriametrics/vmrestore:<PKG_TAG>` docker image locally.
`<PKG_TAG>` is auto-generated image tag, which depends on source code in the repository.
The `<PKG_TAG>` may be manually set via `PKG_TAG=foobar make package-vmrestore`.
The base docker image is [alpine](https://hub.docker.com/_/alpine) but it is possible to use any other base image
by setting it via `<ROOT_IMAGE>` environment variable. For example, the following command builds the image on top of [scratch](https://hub.docker.com/_/scratch) image:
```console
ROOT_IMAGE=scratch make package-vmrestore
```