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262 lines
16 KiB
Markdown
262 lines
16 KiB
Markdown
## vmbackupmanager
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***vmbackupmanager is a part of [enterprise package](https://victoriametrics.com/products/enterprise/). It is available for download and evaluation at [releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases)***
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The VictoriaMetrics backup manager automates regular backup procedures. It supports the following backup intervals: **hourly**, **daily**, **weekly** and **monthly**. Multiple backup intervals may be configured simultaneously. I.e. the backup manager creates hourly backups every hour, while it creates daily backups every day, etc. Backup manager must have read access to the storage data, so best practice is to install it on the same machine (or as a sidecar) where the storage node is installed.
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The backup service makes a backup every hour and puts it to the latest folder and then copies data to the folders which represent the backup intervals (hourly, daily, weekly and monthly)
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The required flags for running the service are as follows:
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* -eula - should be true and means that you have the legal right to run a backup manager. That can either be a signed contract or an email with confirmation to run the service in a trial period
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* -storageDataPath - path to VictoriaMetrics or vmstorage data path to make backup from
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* -snapshot.createURL - VictoriaMetrics creates snapshot URL which will automatically be created during backup. Example: <http://victoriametrics:8428/snapshot/create>
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* -dst - backup destination at s3, gcs or local filesystem
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* -credsFilePath - 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](https://cloud.google.com/iam/docs/creating-managing-service-account-keys) and [https://docs.aws.amazon.com/general/latest/gr/aws-security-credentials.html](https://docs.aws.amazon.com/general/latest/gr/aws-security-credentials.html)
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Backup schedule is controlled by the following flags:
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* -disableHourly - disable hourly run. Default false
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* -disableDaily - disable daily run. Default false
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* -disableWeekly - disable weekly run. Default false
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* -disableMonthly - disable monthly run. Default false
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By default, all flags are turned on and Backup Manager backups data every hour for every interval (hourly, daily, weekly and monthly).
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The backup manager creates the following directory hierarchy at **-dst**:
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* /latest/ - contains the latest backup
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* /hourly/ - contains hourly backups. Each backup is named as *YYYY-MM-DD:HH*
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* /daily/ - contains daily backups. Each backup is named as *YYYY-MM-DD*
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* /weekly/ - contains weekly backups. Each backup is named as *YYYY-WW*
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* /monthly/ - contains monthly backups. Each backup is named as *YYYY-MM*
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To get the full list of supported flags please run the following command:
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```console
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./vmbackupmanager --help
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```
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The service creates a **full** backup each run. This means that the system can be restored fully from any particular backup using vmrestore. Backup manager uploads only the data that has been changed or created since the most recent backup (incremental backup).
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*Please take into account that the first backup upload could take a significant amount of time as it needs to upload all of the data.*
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There are two flags which could help with performance tuning:
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* -maxBytesPerSecond - the maximum upload speed. There is no limit if it is set to 0
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* -concurrency - The number of concurrent workers. Higher concurrency may improve upload speed (default 10)
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## Example of Usage
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GCS and cluster version. You need to have a credentials file in json format with following structure
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credentials.json
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```json
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{
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"type": "service_account",
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"project_id": "<project>",
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"private_key_id": "",
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"private_key": "-----BEGIN PRIVATE KEY-----\-----END PRIVATE KEY-----\n",
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"client_email": “test@<project>.iam.gserviceaccount.com",
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"client_id": "",
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"auth_uri": "https://accounts.google.com/o/oauth2/auth",
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"token_uri": "https://oauth2.googleapis.com/token",
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"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
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"client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/test%40<project>.iam.gserviceaccount.com"
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}
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```
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Backup manager launched with the following configuration:
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```console
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export NODE_IP=192.168.0.10
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export VMSTORAGE_ENDPOINT=http://127.0.0.1:8428
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./vmbackupmanager -dst=gs://vmstorage-data/$NODE_IP -credsFilePath=credentials.json -storageDataPath=/vmstorage-data -snapshot.createURL=$VMSTORAGE_ENDPOINT/snapshot/create -eula
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```
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Expected logs in vmbackupmanager:
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```console
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info lib/backup/actions/backup.go:131 server-side copied 81 out of 81 parts from GCS{bucket: "vmstorage-data", dir: "192.168.0.10//latest/"} to GCS{bucket: "vmstorage-data", dir: "192.168.0.10//weekly/2020-34/"} in 2.549833008s
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info lib/backup/actions/backup.go:169 backed up 853315 bytes in 2.882 seconds; deleted 0 bytes; server-side copied 853315 bytes; uploaded 0 bytes
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```
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Expected logs in vmstorage:
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```console
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info VictoriaMetrics/lib/storage/table.go:146 creating table snapshot of "/vmstorage-data/data"...
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info VictoriaMetrics/lib/storage/storage.go:311 deleting snapshot "/vmstorage-data/snapshots/20200818201959-162C760149895DDA"...
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info VictoriaMetrics/lib/storage/storage.go:319 deleted snapshot "/vmstorage-data/snapshots/20200818201959-162C760149895DDA" in 0.169 seconds
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```
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The result on the GCS bucket
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* The root folder
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* The latest folder
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## Backup Retention Policy
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Backup retention policy is controlled by:
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* -keepLastHourly - keep the last N hourly backups. Disabled by default
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* -keepLastDaily - keep the last N daily backups. Disabled by default
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* -keepLastWeekly - keep the last N weekly backups. Disabled by default
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* -keepLastMonthly - keep the last N monthly backups. Disabled by default
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*Note*: 0 value in every keepLast flag results into deletion ALL backups for particular type (hourly, daily, weekly and monthly)
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Let’s assume we have a backup manager collecting daily backups for the past 10 days.
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We enable backup retention policy for backup manager by using following configuration:
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```console
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export NODE_IP=192.168.0.10
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export VMSTORAGE_ENDPOINT=http://127.0.0.1:8428
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./vmbackupmanager -dst=gs://vmstorage-data/$NODE_IP -credsFilePath=credentials.json -storageDataPath=/vmstorage-data -snapshot.createURL=$VMSTORAGE_ENDPOINT/snapshot/create
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-keepLastDaily=3 -eula
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```
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Expected logs in backup manager on start:
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```console
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info lib/logger/flag.go:20 flag "keepLastDaily" = "3"
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```
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Expected logs in backup manager during retention cycle:
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```console
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info app/vmbackupmanager/retention.go:106 daily backups to delete [daily/2021-02-13 daily/2021-02-12 daily/2021-02-11 daily/2021-02-10 daily/2021-02-09 daily/2021-02-08 daily/2021-02-07]
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```
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The result on the GCS bucket. We see only 3 daily backups:
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## Configuration
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### Flags
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Pass `-help` to `vmbackupmanager` in order to see the full list of supported
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command-line flags with their descriptions.
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The shortlist of configuration flags is the following:
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```
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vmbackupmanager performs regular backups according to the provided configs.
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-concurrency int
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The number of concurrent workers. Higher concurrency may reduce backup duration (default 10)
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-configFilePath string
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Path to file with S3 configs. Configs are loaded from default location if not set.
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See https://docs.aws.amazon.com/general/latest/gr/aws-security-credentials.html
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-configProfile string
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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
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-credsFilePath string
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Path to file with GCS or S3 credentials. Credentials are loaded from default locations if not set.
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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
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-customS3Endpoint string
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Custom S3 endpoint for use with S3-compatible storages (e.g. MinIO). S3 is used if not set
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-disableDaily
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Disable daily run. Default false
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-disableHourly
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Disable hourly run. Default false
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-disableMonthly
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Disable monthly run. Default false
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-disableWeekly
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Disable weekly run. Default false
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-dst string
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The root folder of Victoria Metrics backups. Example: gs://bucket/path/to/backup/dir, s3://bucket/path/to/backup/dir or fs:///path/to/local/backup/dir
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-enableTCP6
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Whether to enable IPv6 for listening and dialing. By default only IPv4 TCP and UDP is used
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-envflag.enable
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Whether to enable reading flags from environment variables additionally to command line. Command line flag values have priority over values from environment vars. Flags are read only from command line if this flag isn't set. See https://docs.victoriametrics.com/#environment-variables for more details
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-envflag.prefix string
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Prefix for environment variables if -envflag.enable is set
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-eula
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By specifying this flag, you confirm that you have an enterprise license and accept the EULA https://victoriametrics.com/assets/VM_EULA.pdf
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-flagsAuthKey string
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Auth key for /flags endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings
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-fs.disableMmap
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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()
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-http.connTimeout duration
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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)
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-http.disableResponseCompression
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Disable compression of HTTP responses to save CPU resources. By default compression is enabled to save network bandwidth
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-http.idleConnTimeout duration
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Timeout for incoming idle http connections (default 1m0s)
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-http.maxGracefulShutdownDuration duration
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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)
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-http.pathPrefix string
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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
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-http.shutdownDelay duration
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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
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-httpAuth.password string
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Password for HTTP Basic Auth. The authentication is disabled if -httpAuth.username is empty
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-httpAuth.username string
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Username for HTTP Basic Auth. The authentication is disabled if empty. See also -httpAuth.password
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-httpListenAddr string
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Address to listen for http connections (default ":8300")
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-keepLastDaily int
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Keep last N daily backups. If 0 is specified next retention cycle removes all backups for given time period. (default -1)
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-keepLastHourly int
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Keep last N hourly backups. If 0 is specified next retention cycle removes all backups for given time period. (default -1)
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-keepLastMonthly int
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Keep last N monthly backups. If 0 is specified next retention cycle removes all backups for given time period. (default -1)
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-keepLastWeekly int
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Keep last N weekly backups. If 0 is specified next retention cycle removes all backups for given time period. (default -1)
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-loggerDisableTimestamps
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Whether to disable writing timestamps in logs
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-loggerErrorsPerSecondLimit int
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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
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-loggerFormat string
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Format for logs. Possible values: default, json (default "default")
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-loggerLevel string
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Minimum level of errors to log. Possible values: INFO, WARN, ERROR, FATAL, PANIC (default "INFO")
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-loggerOutput string
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Output for the logs. Supported values: stderr, stdout (default "stderr")
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-loggerTimezone string
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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
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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
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-maxBytesPerSecond int
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The maximum upload speed. There is no limit if it is set to 0
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-memory.allowedBytes size
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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 OS page cache resulting in higher disk IO usage
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Supports the following optional suffixes for size values: KB, MB, GB, KiB, MiB, GiB (default 0)
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-memory.allowedPercent float
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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 OS page cache which will result in higher disk IO usage (default 60)
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-metricsAuthKey string
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Auth key for /metrics endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings
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-pprofAuthKey string
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Auth key for /debug/pprof/* endpoints. It must be passed via authKey query arg. It overrides httpAuth.* settings
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-runOnStart
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Upload backups immediately after start of the service. Otherwise the backup starts on new hour
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-s3ForcePathStyle
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Prefixing endpoint with bucket name when set false, true by default. (default true)
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-snapshot.createURL string
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VictoriaMetrics create snapshot url. When this is given a snapshot will automatically be created during backup.Example: http://victoriametrics:8428/snapshot/create
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-snapshot.deleteURL string
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VictoriaMetrics delete snapshot url. Optional. Will be generated from snapshot.createURL if not provided. All created snaphosts will be automatically deleted.Example: http://victoriametrics:8428/snapshot/delete
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-storageDataPath string
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Path to VictoriaMetrics data. Must match -storageDataPath from VictoriaMetrics or vmstorage (default "victoria-metrics-data")
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-tls
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Whether to enable TLS for incoming HTTP requests at -httpListenAddr (aka https). -tlsCertFile and -tlsKeyFile must be set if -tls is set
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-tlsCertFile string
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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
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-tlsCipherSuites array
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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
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Supports an array of values separated by comma or specified via multiple flags.
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-tlsKeyFile string
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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
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-version
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Show VictoriaMetrics version
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```
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