forked from TrueCloudLab/frostfs-s3-gw
545 lines
28 KiB
Markdown
545 lines
28 KiB
Markdown
# Configuration
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There are three ways to configure the S3 GW:
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1. CLI parameters
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2. YAML file
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3. Environment variables
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Everything available as a CLI parameter can also be specified via environment variables and almost everything can be
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specified via `.yaml` configuration file.
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But **not vice versa**, some parameters can be configured only with environment variables/configuration file.
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Most of these parameters have default values, therefore, these ways to configure the gateway are optional and
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basic configuration can be completed with CLI parameters only.
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1. [CLI parameters](#cli-parameters)
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1. [Nodes and weights](#nodes-and-weights)
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2. [Wallet](#wallet)
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3. [Binding and TLS](#listening-on-address-and-TLS)
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4. [RPC endpoint and resolving of bucket names](#rpc-endpoint-and-resolving-of-bucket-names)
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5. [Processing of requests](#processing-of-requests)
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6. [Connection to FrostFS](#connection-to-FrostFS)
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7. [Monitoring and metrics](#monitoring-and-metrics)
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2. [YAML file and environment variables](#yaml-file-and-environment-variables)
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1. [Configuration file](#frostfs-s3-gateway-configuration-file)
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## CLI parameters
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### Nodes and weights
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You can specify multiple `-p` options to add more FrostFS nodes; this will make
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a gateway spread requests equally among them (using weight 1 for every node):
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```shell
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$ frostfs-s3-gw -p 192.168.130.72:8080 -p 192.168.130.71:8080
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```
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If you want some specific load distribution proportions, use weights and priorities, they
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can only be specified via environment variables or a configuration file.
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### Wallet
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Wallet (`--wallet`) is a mandatory parameter. It is a path to a wallet file. You can provide a passphrase to decrypt
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a wallet via env variable or conf file, or you will be asked to enter a password interactively.
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You can also specify an account address to use from a wallet using the `--address` parameter.
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### Listening on address and TLS
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You can make the gateway listen on specific address using the `--listen_address` option.
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It can also provide TLS interface for its users, just specify paths to the key and
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certificate files via `--tls.key_file` and `--tls.cert_file` parameters. Note
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that using these options makes gateway TLS-only. If you need to serve both TLS
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and plain text, you either have to run two gateway instances or use some
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external redirecting solution.
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Example to bind to `192.168.130.130:443` and serve TLS there (keys and nodes are
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omitted):
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```shell
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$ frostfs-s3-gw --listen_address 192.168.130.130:443 \
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--tls.key_file=key.pem --tls.cert_file=cert.pem
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```
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Using these flag you can configure only one address. To set multiple addresses use yaml config.
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### RPC endpoint and resolving of bucket names
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To set RPC endpoint specify a value of parameter `-r` or `--rpc_endpoint`. The parameter is **required if** another
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parameter's `--resolve_order` value contains `nns`.
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```shell
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$ frostfs-s3-gw --rpc_endpoint http://morph-chain.frostfs.devenv:30333/ --resolve_order nns,dns
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```
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### Processing of requests
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Maximum number of clients whose requests can be handled by the gateway can be specified by the value of
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`--max_clients_count` parameter.
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`--max_clients_deadline` defines deadline after which the gate sends error `RequestTimeout` to a client.
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```shell
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$ frostfs-s3-gw --max_clients_count 150 --max_clients_deadline 1m
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```
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### Connection to FrostFS
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Timeout to connect to FrostFS nodes can be set with `--connect_timeout`
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and timeout to check node health during rebalance`--healthcheck_timeout`.
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Also, interval to check node health can be specified by `--rebalance_interval` value.
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```shell
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$ frostfs-s3-gw --healthcheck_timeout 15s --connect_timeout 1m --rebalance_interval 1h
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```
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### Monitoring and metrics
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Pprof and Prometheus are integrated into the gateway. To enable them, use `--pprof` and `--metrics` flags or
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`S3_GW_PPROF_ENABLED`/`S3_GW_PROMETHEUS_ENABLED` environment variables.
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## YAML file and environment variables
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Example of a YAML configuration file: [yaml-example](/config/config.yaml)
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Examples of environment variables: [env-example](/config/config.env).
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A path to a configuration file can be specified with `--config` parameter:
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```shell
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$ frostfs-s3-gw --config your-config.yaml
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```
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### Multiple configs
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You can use several config files when running application. It allows you to split configuration into parts.
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For example, you can use separate yaml file for pprof and prometheus section in config (see [config examples](../config)).
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You can either provide several files with repeating `--config` flag or provide path to the dir that contains all configs using `--config-dir` flag.
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Also, you can combine these flags:
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```shell
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$ frostfs-s3-gw --config ./config/config.yaml --config /your/partial/config.yaml --config-dir ./config/dir
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```
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**Note:** next file in `--config` flag overwrites values from the previous one.
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Files from `--config-dir` directory overwrite values from `--config` files.
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So the command above run `frostfs-s3-gw` to listen on `0.0.0.0:8080` address (value from `./config/config.yaml`),
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applies parameters from `/your/partial/config.yaml`,
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enable pprof (value from `./config/dir/pprof.yaml`) and prometheus (value from `./config/dir/prometheus.yaml`).
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### Reload on SIGHUP
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Some config values can be reloaded on SIGHUP signal.
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Such parameters have special mark in tables below.
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You can send SIGHUP signal to app using the following command:
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```shell
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$ kill -s SIGHUP <app_pid>
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```
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Example:
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```shell
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$ ./bin/frostfs-s3-gw --config config.yaml &> s3.log &
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[1] 998346
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$ cat s3.log
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# ...
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2022-09-30T17:38:22.338+0300 info s3-gw/app.go:371 application started {"name": "frostfs-s3-gw", "version": "v0.24.0"}
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# ...
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$ kill -s SIGHUP 998346
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$ cat s3.log
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# ...
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2022-09-30T17:38:40.909+0300 info s3-gw/app.go:491 SIGHUP config reload completed
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```
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### FrostFS S3 Gateway configuration file
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This section contains detailed FrostFS S3 Gateway configuration file description
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including default config values and some tips to set up configurable values.
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There are some custom types used for brevity:
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* `duration` -- string consisting of a number and a suffix. Suffix examples include `s` (seconds), `m` (minutes), `ms` (
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milliseconds).
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### Structure
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| Section | Description |
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|--------------------|----------------------------------------------------------------|
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| no section | [General parameters](#general-section) |
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| `wallet` | [Wallet configuration](#wallet-section) |
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| `peers` | [Nodes configuration](#peers-section) |
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| `placement_policy` | [Placement policy configuration](#placement_policy-section) |
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| `server` | [Server configuration](#server-section) |
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| `logger` | [Logger configuration](#logger-section) |
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| `tree` | [Tree configuration](#tree-section) |
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| `cache` | [Cache configuration](#cache-section) |
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| `nats` | [NATS configuration](#nats-section) |
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| `cors` | [CORS configuration](#cors-section) |
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| `pprof` | [Pprof configuration](#pprof-section) |
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| `prometheus` | [Prometheus configuration](#prometheus-section) |
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| `frostfs` | [Parameters of requests to FrostFS](#frostfs-section) |
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| `resolve_bucket` | [Bucket name resolving configuration](#resolve_bucket-section) |
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| `kludge` | [Different kludge configuration](#kludge-section) |
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### General section
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```yaml
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listen_domains:
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- s3dev.frostfs.devenv
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- s3dev2.frostfs.devenv
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rpc_endpoint: http://morph-chain.frostfs.devenv:30333
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resolve_order:
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- nns
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- dns
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connect_timeout: 10s
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stream_timeout: 10s
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healthcheck_timeout: 15s
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rebalance_interval: 60s
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pool_error_threshold: 100
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max_clients_count: 100
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max_clients_deadline: 30s
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allowed_access_key_id_prefixes:
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- Ck9BHsgKcnwfCTUSFm6pxhoNS4cBqgN2NQ8zVgPjqZDX
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- 3stjWenX15YwYzczMr88gy3CQr4NYFBQ8P7keGzH5QFn
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
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|----------------------------------|------------|---------------|----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `listen_domains` | `[]string` | | | Domains to be able to use virtual-hosted-style access to bucket. |
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| `rpc_endpoint` | `string` | yes | | The address of the RPC host to which the gateway connects to resolve bucket names (required to use the `nns` resolver). |
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| `resolve_order` | `[]string` | yes | `[dns]` | Order of bucket name resolvers to use. Available resolvers: `dns`, `nns`. | |
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| `connect_timeout` | `duration` | | `10s` | Timeout to connect to a node. |
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| `stream_timeout` | `duration` | | `10s` | Timeout for individual operations in streaming RPC. |
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| `healthcheck_timeout` | `duration` | | `15s` | Timeout to check node health during rebalance. |
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| `rebalance_interval` | `duration` | | `60s` | Interval to check node health. |
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| `pool_error_threshold` | `uint32` | | `100` | The number of errors on connection after which node is considered as unhealthy. |
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| `max_clients_count` | `int` | | `100` | Limits for processing of clients' requests. |
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| `max_clients_deadline` | `duration` | | `30s` | Deadline after which the gate sends error `RequestTimeout` to a client. |
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| `allowed_access_key_id_prefixes` | `[]string` | | | List of allowed `AccessKeyID` prefixes which S3 GW serve. If the parameter is omitted, all `AccessKeyID` will be accepted. |
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### `wallet` section
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```yaml
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wallet:
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path: /path/to/wallet.json # Path to wallet
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passphrase: "" # Passphrase to decrypt wallet.
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address: NfgHwwTi3wHAS8aFAN243C5vGbkYDpqLHP
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```
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| Parameter | Type | Default value | Description |
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|--------------|----------|---------------|---------------------------------------------------------------------------|
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| `path` | `string` | | Path to wallet |
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| `passphrase` | `string` | | Passphrase to decrypt wallet. |
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| `address` | `string` | | Account address to get from wallet. If omitted default one will be used. |
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### `peers` section
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```yaml
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# Nodes configuration
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# This configuration makes the gateway use the first node (node1.frostfs:8080)
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# while it's healthy. Otherwise, gateway uses the second node (node2.frostfs:8080)
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# for 10% of requests and the third node (node3.frostfs:8080) for 90% of requests.
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# Until nodes with the same priority level are healthy
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# nodes with other priority are not used.
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# The lower the value, the higher the priority.
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peers:
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0:
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address: node1.frostfs:8080
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priority: 1
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weight: 1
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1:
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address: node2.frostfs:8080
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priority: 2
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weight: 0.1
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2:
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address: node3.frostfs:8080
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priority: 2
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weight: 0.9
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```
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| Parameter | Type | Default value | Description |
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|------------|----------|---------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `address` | `string` | | Address of storage node. |
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| `priority` | `int` | `1` | It allows to group nodes and don't switch group until all nodes with the same priority will be unhealthy. The lower the value, the higher the priority. |
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| `weight` | `float` | `1` | Weight of node in the group with the same priority. Distribute requests to nodes proportionally to these values. |
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### `placement_policy` section
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```yaml
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placement_policy:
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default: REP 3
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region_mapping: /path/to/mapping/rules.json
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copies_numbers:
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- location_constraint: one-dc
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vector:
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- 1
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- 2
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- 3
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
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|------------------|------------------------------------------------|---------------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `default` | `string` | yes | `REP 3` | Default policy of placing containers in FrostFS. If a user sends a request `CreateBucket` and doesn't define policy for placing of a container in FrostFS, the S3 Gateway will put the container with default policy. |
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| `region_mapping` | `string` | yes | | Path to file that maps aws `LocationContraint` values to FrostFS placement policy. The similar to `--container-policy` flag in `frostfs-s3-authmate` util, see in [docs](./authmate.md#containers-policy) |
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| `copies_numbers` | [[]Copies numbers](#copies_numbers-subsection) | no | | Array of configured location constraints and their copies numbers. |
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File for `region_mapping` must contain something like this:
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```json
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{
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"rep-3": "REP 3",
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"complex": "REP 1 IN X CBF 1 SELECT 1 FROM * AS X",
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"example-json-policy": "{\"replicas\":[{\"count\":3,\"selector\":\"SelASD0\"}],\"container_backup_factor\":3,\"selectors\":[{\"name\":\"SelASD0\",\"count\":3,\"filter\":\"*\"}],\"filters\":[]}"
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}
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```
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**Note:** on SIGHUP reload policies will be updated only if both parameters are valid.
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So if you change `default` to some valid value and set invalid path in `region_mapping` the `default` value won't be changed.
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#### `copies_numbers` subsection
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```yaml
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- location_constraint: sample-01
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vector:
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- 1
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- 2
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- 3
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
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|-----------------------|----------|---------------|---------------|----------------------------------------------------------|
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| `location_constraint` | `string` | no | | Location constraint text label. |
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| `vector` | `[]int` | no | | Array of copies numbers corresponding to the constraint. |
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### `server` section
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You can specify several listeners for server. For example, for `http` and `https`.
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```yaml
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server:
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- address: 0.0.0.0:8080
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tls:
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enabled: false
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cert_file: /path/to/cert
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key_file: /path/to/key
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- address: 0.0.0.0:8081
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tls:
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enabled: true
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cert_file: /path/to/another/cert
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key_file: /path/to/another/key
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
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|-----------------|----------|---------------|----------------|-----------------------------------------------|
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| `address` | `string` | | `0.0.0.0:8080` | The address that the gateway is listening on. |
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| `tls.enabled` | `bool` | | false | Enable TLS or not. |
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| `tls.cert_file` | `string` | yes | | Path to the TLS certificate. |
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| `tls.key_file` | `string` | yes | | Path to the key. |
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### `logger` section
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```yaml
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logger:
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level: debug
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
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|-----------|----------|---------------|---------------|----------------------------------------------------------------------------------------------------|
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| `level` | `string` | yes | `debug` | Logging level.<br/>Possible values: `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. |
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### `tree` section
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```yaml
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tree:
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service:
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- s01.frostfs.devenv:8080
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- s02.frostfs.devenv:8080
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```
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If you use only one endpoint, it can be provided as:
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```yaml
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tree:
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service: s01.frostfs.devenv:8080
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```
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| Parameter | Type | Default value | Description |
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|-----------|------------|---------------|-------------------------------------------------------------------------------------------------------------------------------|
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| `service` | `[]string` | | Endpoints of the tree service. At least one endpoint must be provided. Node addresses (from the `peers` section) can be used. |
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### `cache` section
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```yaml
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cache:
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objects:
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lifetime: 300s
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size: 150
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list:
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lifetime: 1m
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size: 100
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names:
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lifetime: 1m
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size: 1000
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buckets:
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lifetime: 1m
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size: 500
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system:
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lifetime: 2m
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size: 1000
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accessbox:
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lifetime: 5m
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size: 10
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accesscontrol:
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lifetime: 1m
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size: 100000
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```
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| Parameter | Type | Default value | Description |
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|-----------------|-----------------------------------|-----------------------------------|----------------------------------------------------------------------------------------|
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| `objects` | [Cache config](#cache-subsection) | `lifetime: 5m`<br>`size: 1000000` | Cache for objects (FrostFS headers). |
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| `list` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 100000` | Cache which keeps lists of objects in buckets. |
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| `names` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 10000` | Cache which contains mapping of nice name to object addresses. |
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| `buckets` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 1000` | Cache which contains mapping of bucket name to bucket info. |
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| `system` | [Cache config](#cache-subsection) | `lifetime: 5m`<br>`size: 10000` | Cache for system objects in a bucket: bucket settings, notification configuration etc. |
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| `accessbox` | [Cache config](#cache-subsection) | `lifetime: 10m`<br>`size: 100` | Cache which stores access box with tokens by its address. |
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| `accesscontrol` | [Cache config](#cache-subsection) | `lifetime: 1m`<br>`size: 100000` | Cache which stores owner to cache operation mapping. |
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#### `cache` subsection
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```yaml
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lifetime: 2m
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size: 1000
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```
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| Parameter | Type | Default value | Description |
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|------------|------------|------------------|-------------------------------|
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| `lifetime` | `duration` | depends on cache | Lifetime of entries in cache. |
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| `size` | `int` | depends on cache | LRU cache size. |
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### `nats` section
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This is an advanced section, use with caution.
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You can turn on notifications about successful completions of basic operations, and the gateway will send notifications
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via NATS JetStream.
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1. to configure the NATS server with JetStream
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2. to specify NATS parameters for the S3 GW. It's ***necessary*** to define a values of `nats.enable` or
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`S3_GW_NATS_ENABLED` as `True`
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3. to configure notifications in a bucket
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```yaml
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nats:
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enabled: true
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endpoint: nats://localhost:4222
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timeout: 30s
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cert_file: /path/to/cert
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key_file: /path/to/key
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root_ca: /path/to/ca
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```
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| Parameter | Type | Default value | Description |
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|---------------|------------|---------------|------------------------------------------------------|
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| `enabled` | `bool` | `false` | Flag to enable the service. |
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| `endpoint` | `string` | | NATS endpoint to connect to. |
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| `timeout` | `duration` | `30s` | Timeout for the object notification operation. |
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| `certificate` | `string` | | Path to the client certificate. |
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| `key` | `string` | | Path to the client key. |
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| `ca` | `string` | | Override root CA used to verify server certificates. |
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### `cors` section
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|
|
```yaml
|
|
cors:
|
|
default_max_age: 600
|
|
```
|
|
|
|
| Parameter | Type | Default value | Description |
|
|
|-------------------|-------|---------------|------------------------------------------------------|
|
|
| `default_max_age` | `int` | `600` | Value of `Access-Control-Max-Age` header in seconds. |
|
|
|
|
# `pprof` section
|
|
|
|
Contains configuration for the `pprof` profiler.
|
|
|
|
```yaml
|
|
pprof:
|
|
enabled: true
|
|
address: localhost:8085
|
|
```
|
|
|
|
| Parameter | Type | SIGHUP reload | Default value | Description |
|
|
|-----------|----------|---------------|------------------|-----------------------------------------|
|
|
| `enabled` | `bool` | yes | `false` | Flag to enable the service. |
|
|
| `address` | `string` | yes | `localhost:8085` | Address that service listener binds to. |
|
|
|
|
# `prometheus` section
|
|
|
|
Contains configuration for the `prometheus` metrics service.
|
|
General metrics are available on `/metrics` url path, billing metrics on `/metrics/billing`.
|
|
|
|
```yaml
|
|
prometheus:
|
|
enabled: true
|
|
address: localhost:8086
|
|
```
|
|
|
|
| Parameter | Type | SIGHUP reload | Default value | Description |
|
|
|-----------|----------|---------------|------------------|-----------------------------------------|
|
|
| `enabled` | `bool` | yes | `false` | Flag to enable the service. |
|
|
| `address` | `string` | yes | `localhost:8086` | Address that service listener binds to. |
|
|
|
|
# `frostfs` section
|
|
|
|
Contains parameters of requests to FrostFS.
|
|
This value can be overridden with `X-Amz-Meta-Frostfs-Copies-Number` header for `PutObject`, `CopyObject`, `CreateMultipartUpload`.
|
|
|
|
```yaml
|
|
frostfs:
|
|
set_copies_number: 0
|
|
```
|
|
|
|
| Parameter | Type | Default value | Description |
|
|
|---------------------|----------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|
|
| `set_copies_number` | `uint32` | `0` | Number of the object copies to consider PUT to FrostFS successful. <br/>Default value `0` means that object will be processed according to the container's placement policy |
|
|
|
|
# `resolve_bucket` section
|
|
|
|
Bucket name resolving parameters from and to container ID with `HEAD` request.
|
|
|
|
```yaml
|
|
resolve_bucket:
|
|
allow:
|
|
- container
|
|
deny:
|
|
```
|
|
|
|
| Parameter | Type | Default value | Description |
|
|
|-----------|------------|---------------|--------------------------------------------------------------------------------------------------------------------------|
|
|
| `allow` | `[]string` | | List of container zones which are available to resolve. Mutual exclusive with `deny` list. Prioritized over `deny` list. |
|
|
| `deny` | `[]string` | | List of container zones which are restricted to resolve. Mutual exclusive with `allow` list. |
|
|
|
|
# `kludge` section
|
|
|
|
Workarounds for non-standard use cases.
|
|
|
|
```yaml
|
|
kludge:
|
|
use_default_xmlns_for_complete_multipart: false
|
|
complete_multipart_keepalive: 10s
|
|
```
|
|
|
|
| Parameter | Type | SIGHUP reload | Default value | Description |
|
|
|--------------------------------------------|------------|---------------|---------------|-----------------------------------------------------------------------------------------------------------------------------|
|
|
| `use_default_xmlns_for_complete_multipart` | `bool` | yes | false | Enable using default xml namespace `http://s3.amazonaws.com/doc/2006-03-01/` when parse `CompleteMultipartUpload` xml body. |
|
|
| `complete_multipart_keepalive` | `duration` | no | 10s | Set timeout between whitespace transmissions during CompleteMultipartUpload processing. |
|