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# FrostFS HTTP Gateway configuration file
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This section contains detailed FrostFS HTTP Gateway configuration file description
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including default config values and some tips to set up configurable values.
There are some custom types used for brevity:
* `duration` -- string consisting of a number and a suffix. Suffix examples include `s` (seconds), `m` (minutes), `ms` (
milliseconds).
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# Reload on SIGHUP
Some config values can be reloaded on SIGHUP signal.
Such parameters have special mark in tables below.
You can send SIGHUP signal to app using the following command:
```shell
$ kill -s SIGHUP < app_pid >
```
Example:
```shell
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$ ./bin/frostfs-http-gw --config config.yaml & > http.log &
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[1] 998346
$ cat http.log
# ...
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2022-10-03T09:37:25.826+0300 info frostfs-http-gw/app.go:332 starting application {"app_name": "frostfs-http-gw", "version": "v0.24.0"}
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# ...
$ kill -s SIGHUP 998346
$ cat http.log
# ...
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2022-10-03T09:38:16.205+0300 info frostfs-http-gw/app.go:470 SIGHUP config reload completed
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```
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# Structure
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| Section | Description |
|------------------|----------------------------------------------------------------|
| no section | [General parameters ](#general-section ) |
| `wallet` | [Wallet configuration ](#wallet-section ) |
| `peers` | [Nodes configuration ](#peers-section ) |
| `logger` | [Logger configuration ](#logger-section ) |
| `web` | [Web configuration ](#web-section ) |
| `server` | [Server configuration ](#server-section ) |
| `upload-header` | [Upload header configuration ](#upload-header-section ) |
| `zip` | [ZIP configuration ](#zip-section ) |
| `pprof` | [Pprof configuration ](#pprof-section ) |
| `prometheus` | [Prometheus configuration ](#prometheus-section ) |
| `tracing` | [Tracing configuration ](#tracing-section ) |
| `runtime` | [Runtime configuration ](#runtime-section ) |
| `frostfs` | [Frostfs configuration ](#frostfs-section ) |
| `cache` | [Cache configuration ](#cache-section ) |
| `resolve_bucket` | [Bucket name resolving configuration ](#resolve_bucket-section ) |
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| `index_page` | [Index page configuration ](#index_page-section ) |
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| `multinet` | [Multinet configuration ](#multinet-section ) |
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# General section
```yaml
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rpc_endpoint: http://morph-chain.frostfs.devenv:30333
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resolve_order:
- nns
- dns
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connect_timeout: 5s
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stream_timeout: 10s
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request_timeout: 5s
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rebalance_timer: 30s
pool_error_threshold: 100
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reconnect_interval: 1m
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|------------------------|------------|---------------|---------------|-------------------------------------------------------------------------------------------------|
| `rpc_endpoint` | `string` | yes | | The address of the RPC host to which the gateway connects to resolve bucket names. |
| `resolve_order` | `[]string` | yes | `[nns, dns]` | Order of bucket name resolvers to use. |
| `connect_timeout` | `duration` | | `10s` | Timeout to connect to a node. |
| `stream_timeout` | `duration` | | `10s` | Timeout for individual operations in streaming RPC. |
| `request_timeout` | `duration` | | `15s` | Timeout to check node health during rebalance. |
| `rebalance_timer` | `duration` | | `60s` | Interval to check node health. |
| `pool_error_threshold` | `uint32` | | `100` | The number of errors on connection after which node is considered as unhealthy. |
| `reconnect_interval` | `duration` | no | `1m` | Listeners reconnection interval. |
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# `wallet` section
```yaml
wallet:
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path: /path/to/wallet.json
address: NfgHwwTi3wHAS8aFAN243C5vGbkYDpqLHP
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passphrase: pwd
```
| Parameter | Type | Default value | Description |
|--------------|----------|---------------|--------------------------------------------------------------------------|
| `path` | `string` | | Path to the wallet. |
| `address` | `string` | | Account address to get from wallet. If omitted default one will be used. |
| `passphrase` | `string` | | Passphrase to decrypt wallet. |
# `peers` section
```yaml
# Nodes configuration
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# This configuration makes the gateway use the first node (node1.frostfs:8080)
# while it's healthy. Otherwise, gateway uses the second node (node2.frostfs:8080)
# 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
# nodes with other priority are not used.
# The lower the value, the higher the priority.
peers:
0:
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address: node1.frostfs:8080
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priority: 1
weight: 1
1:
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address: node2.frostfs:8080
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priority: 2
weight: 0.1
2:
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address: node3.frostfs:8080
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priority: 2
weight: 0.9
```
| Parameter | Type | Default value | Description |
|------------|----------|---------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| `address` | `string` | | Address of storage node. |
| `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. |
| `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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# `server` section
You can specify several listeners for server. For example, for `http` and `https` .
```yaml
server:
- address: 0.0.0.0:8080
tls:
enabled: false
cert_file: /path/to/cert
key_file: /path/to/key
- address: 0.0.0.0:8081
tls:
enabled: true
cert_file: /path/to/another/cert
key_file: /path/to/another/key
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------------|----------|---------------|----------------|-----------------------------------------------|
| `address` | `string` | | `0.0.0.0:8080` | The address that the gateway is listening on. |
| `tls.enabled` | `bool` | | false | Enable TLS or not. |
| `tls.cert_file` | `string` | yes | | Path to the TLS certificate. |
| `tls.key_file` | `string` | yes | | Path to the key. |
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# `logger` section
```yaml
logger:
level: debug
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destination: stdout
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sampling:
enabled: false
initial: 100
thereafter: 100
interval: 1s
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------------------|------------|---------------|---------------|----------------------------------------------------------------------------------------------------|
| `level` | `string` | yes | `debug` | Logging level.< br /> Possible values: `debug` , `info` , `warn` , `error` , `dpanic` , `panic` , `fatal` . |
| `destination` | `string` | no | `stdout` | Destination for logger: `stdout` or `journald` |
| `sampling.enabled` | `bool` | no | false | Sampling enabling flag. |
| `sampling.initial` | `int` | no | '100' | Sampling count of first log entries. |
| `sampling.thereafter` | `int` | no | '100' | Sampling count of entries after an `interval` . |
| `sampling.interval` | `duration` | no | '1s' | Sampling interval of messaging similar entries. |
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# `web` section
```yaml
web:
read_buffer_size: 4096
write_buffer_size: 4096
read_timeout: 10m
write_timeout: 5m
stream_request_body: true
max_request_body_size: 4194304
```
| Parameter | Type | Default value | Description |
|-------------------------|------------|---------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `read_buffer_size` | `int` | `4096` | Per-connection buffer size for requests' reading. This also limits the maximum header size. |
| `write_buffer_size` | `int` | `4096` | Per-connection buffer size for responses' writing. |
| `read_timeout` | `duration` | `10m` | The amount of time allowed to read the full request including body. The connection's read deadline is reset when the connection opens, or for keep-alive connections after the first byte has been read. |
| `write_timeout` | `duration` | `5m` | The maximum duration before timing out writes of the response. It is reset after the request handler has returned. |
| `stream_request_body` | `bool` | `true` | Enables request body streaming, and calls the handler sooner when given body is larger than the current limit. |
| `max_request_body_size` | `int` | `4194304` | Maximum request body size. The server rejects requests with bodies exceeding this limit. |
# `upload-header` section
```yaml
upload_header:
use_default_timestamp: false
```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|-------------------------|--------|---------------|---------------|-------------------------------------------------------------|
| `use_default_timestamp` | `bool` | yes | `false` | Create timestamp for object if it isn't provided by header. |
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# `zip` section
```yaml
zip:
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compression: false
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|---------------|--------|---------------|---------------|--------------------------------------------------------------|
| `compression` | `bool` | yes | `false` | Enable zip compression when download files by common prefix. |
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# `pprof` section
Contains configuration for the `pprof` profiler.
```yaml
pprof:
enabled: true
address: localhost:8083
```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------|----------|---------------|------------------|-----------------------------------------|
| `enabled` | `bool` | yes | `false` | Flag to enable the service. |
| `address` | `string` | yes | `localhost:8083` | Address that service listener binds to. |
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# `prometheus` section
Contains configuration for the `prometheus` metrics service.
```yaml
prometheus:
enabled: true
address: localhost:8084
```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------|----------|---------------|------------------|-----------------------------------------|
| `enabled` | `bool` | yes | `false` | Flag to enable the service. |
| `address` | `string` | yes | `localhost:8084` | Address that service listener binds to. |
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# `tracing` section
Contains configuration for the `tracing` service.
```yaml
tracing:
enabled: true
exporter: "otlp_grpc"
endpoint: "localhost:4317"
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trusted_ca: "/etc/ssl/telemetry-trusted-ca.pem"
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attributes:
- key: key0
value: value
- key: key1
value: value
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
| ------------ | -------------------------------------- | ------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| `enabled` | `bool` | yes | `false` | Flag to enable the tracing. |
| `exporter` | `string` | yes | | Trace collector type (`stdout` or `otlp_grpc` are supported). |
| `endpoint` | `string` | yes | | Address of collector endpoint for OTLP exporters. |
| `trusted_ca` | `string` | yes | | Path to certificate of a certification authority in pem format, that issued the TLS certificate of the telemetry remote server. |
| `attributes` | [[]Attributes](#attributes-subsection) | yes | | An array of configurable attributes in key-value format. |
#### `attributes` subsection
```yaml
attributes:
- key: key0
value: value
- key: key1
value: value
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------------------|----------|---------------|---------------|----------------------------------------------------------|
| `key` | `string` | yes | | Attribute key. |
| `value` | `string` | yes | | Attribute value. |
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# `runtime` section
Contains runtime parameters.
```yaml
runtime:
soft_memory_limit: 1gb
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|---------------------|--------|---------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `soft_memory_limit` | `size` | yes | maxint64 | Soft memory limit for the runtime. Zero or no value stands for no limit. If `GOMEMLIMIT` environment variable is set, the value from the configuration file will be ignored. |
# `frostfs` section
Contains parameters of requests to FrostFS.
```yaml
frostfs:
client_cut: false
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buffer_max_size_for_put: 1048576 # 1mb
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tree_pool_max_attempts: 0
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```
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| Parameter | Type | SIGHUP reload | Default value | Description |
|---------------------------|----------|---------------|---------------|---------------------------------------------------------------------------------------------------------------------------|
| `client_cut` | `bool` | yes | `false` | This flag enables client side object preparing. |
| `buffer_max_size_for_put` | `uint64` | yes | `1048576` | Sets max buffer size for read payload in put operations. |
| `tree_pool_max_attempts` | `uint32` | no | `0` | Sets max attempt to make successful tree request. Value 0 means the number of attempts equals to number of nodes in pool. |
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### `cache` section
```yaml
cache:
buckets:
lifetime: 1m
size: 1000
```
| Parameter | Type | Default value | Description |
|-----------------|-----------------------------------|-----------------------------------|----------------------------------------------------------------------------------------|
| `buckets` | [Cache config ](#cache-subsection ) | `lifetime: 60s` < br > `size: 1000` | Cache which contains mapping of bucket name to bucket info. |
#### `cache` subsection
```yaml
lifetime: 1m
size: 1000
```
| Parameter | Type | Default value | Description |
|------------|------------|------------------|-------------------------------|
| `lifetime` | `duration` | depends on cache | Lifetime of entries in cache. |
| `size` | `int` | depends on cache | LRU cache size. |
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# `resolve_bucket` section
Bucket name resolving parameters from and to container ID.
```yaml
resolve_bucket:
namespace_header: X-Frostfs-Namespace
default_namespaces: [ "", "root" ]
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|----------------------|------------|---------------|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
| `namespace_header` | `string` | yes | `X-Frostfs-Namespace` | Header to determine zone to resolve bucket name. |
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| `default_namespaces` | `[]string` | yes | ["","root"] | Namespaces that should be handled as default. |
# `index_page` section
Parameters for index HTML-page output with S3-bucket or S3-subdir content for `Get object` request
```yaml
index_page:
enabled: false
template_path: ""
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|-----------------|----------|---------------|---------------|---------------------------------------------------------------------------------|
| `enabled` | `bool` | yes | `false` | Flag to enable index_page return if no object with specified S3-name was found. |
| `template_path` | `string` | yes | `""` | Path to .gotmpl file with html template for index_page. |
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# `cors` section
Parameters for CORS (used in OPTIONS requests and responses in all handlers).
If values are not set, headers will not be included to response.
```yaml
cors:
allow_origin: "*"
allow_methods: ["GET", "HEAD"]
allow_headers: ["Authorization"]
expose_headers: ["*"]
allow_credentials: false
max_age: 600
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|---------------------|------------|---------------|---------------|--------------------------------------------------------|
| `allow_origin` | `string` | yes | | Values for `Access-Control-Allow-Origin` headers. |
| `allow_methods` | `[]string` | yes | | Values for `Access-Control-Allow-Methods` headers. |
| `allow_headers` | `[]string` | yes | | Values for `Access-Control-Allow-Headers` headers. |
| `expose_headers` | `[]string` | yes | | Values for `Access-Control-Expose-Headers` headers. |
| `allow_credentials` | `bool` | yes | `false` | Values for `Access-Control-Allow-Credentials` headers. |
| `max_age` | `int` | yes | `600` | Values for `Access-Control-Max-Age ` headers. |
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# `multinet` section
Configuration of multinet support.
```yaml
multinet:
enabled: false
balancer: roundrobin
restrict: false
fallback_delay: 300ms
subnets:
- mask: 1.2.3.4/24
source_ips:
- 1.2.3.4
- 1.2.3.5
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|------------------|--------------------------------|---------------|---------------|--------------------------------------------------------------------------------------------|
| `enabled` | `bool` | yes | `false` | Enables multinet setting to manage source ip of outcoming requests. |
| `balancer` | `string` | yes | `""` | Strategy to pick source IP. By default picks first address. Supports `roundrobin` setting. |
| `restrict` | `bool` | yes | `false` | Restricts requests to an undefined subnets. |
| `fallback_delay` | `duration` | yes | `300ms` | Delay between IPv6 and IPv4 fallback stack switch. |
| `subnets` | [[]Subnet](#subnet-subsection) | yes | | Set of subnets to apply multinet dial settings. |
#### `subnet` subsection
```yaml
- mask: 1.2.3.4/24
source_ips:
- 1.2.3.4
- 1.2.3.5
```
| Parameter | Type | SIGHUP reload | Default value | Description |
|--------------|------------|---------------|---------------|----------------------------------------------------------------------|
| `mask` | `string` | yes | | Destination subnet. |
| `source_ips` | `[]string` | yes | | Array of source IP addresses to use when dialing destination subnet. |
