From 396db2c89d22c3bfee7139a1d4f3b1049599a0b6 Mon Sep 17 00:00:00 2001 From: Denis Kirillov Date: Mon, 18 Jul 2022 16:06:39 +0300 Subject: [PATCH] [#592] Describe configuration Signed-off-by: Denis Kirillov --- docs/configuration.md | 260 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 228 insertions(+), 32 deletions(-) diff --git a/docs/configuration.md b/docs/configuration.md index fe85aa3..938671a 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -1,15 +1,16 @@ # Configuration There are three ways to configure the S3 GW: + 1. CLI parameters -2. YAML file +2. YAML file 3. Environment variables -Everything available as a CLI parameter can also be specified via environment variables and almost everything can be -specified via `.yaml` configuration file. +Everything available as a CLI parameter can also be specified via environment variables and almost everything can be +specified via `.yaml` configuration file. -But **not vice versa**, some parameters can be configured only with environment variables/configuration file. -Most of these parameters have default values, therefore, these ways to configure the gateway are optional and +But **not vice versa**, some parameters can be configured only with environment variables/configuration file. +Most of these parameters have default values, therefore, these ways to configure the gateway are optional and basic configuration can be completed with CLI parameters only. 1. [CLI parameters](#cli-parameters) @@ -21,8 +22,7 @@ basic configuration can be completed with CLI parameters only. 6. [Connection to NeoFS](#connection-to-NeoFS) 7. [Monitoring and metrics](#monitoring-and-metrics) 2. [YAML file and environment variables](#yaml-file-and-environment-variables) - 1. [Notifications](#notifications) - + 1. [Configuration file](#neofs-s3-gateway-configuration-file) ## CLI parameters @@ -34,18 +34,19 @@ a gateway spread requests equally among them (using weight 1 for every node): ```shell $ neofs-s3-gw -p 192.168.130.72:8080 -p 192.168.130.71:8080 ``` + If you want some specific load distribution proportions, use weights and priorities, they can only be specified via environment variables or a configuration file. ### Wallet -Wallet (`--wallet`) is a mandatory parameter. It is a path to a wallet file. You can provide a passphrase to decrypt +Wallet (`--wallet`) is a mandatory parameter. It is a path to a wallet file. You can provide a passphrase to decrypt a wallet via env variable or conf file, or you will be asked to enter a password interactively. You can also specify an account address to use from a wallet using the `--address` parameter. ### Listening on address and TLS -Gateway listens on `0.0.0.0:8080` by default, and you can change that with the `--listen_address` option. +You can make the gateway listen on specific address using the `--listen_address` option. It can also provide TLS interface for its users, just specify paths to the key and certificate files via `--tls.key_file` and `--tls.cert_file` parameters. Note @@ -63,7 +64,7 @@ $ neofs-s3-gw --listen_address 192.168.130.130:443 \ ### RPC endpoint and resolving of bucket names -To set RPC endpoint specify a value of parameter `-r` or `--rpc_endpoint`. The parameter is **required if** another +To set RPC endpoint specify a value of parameter `-r` or `--rpc_endpoint`. The parameter is **required if** another parameter's `--resolve_order` value contains `nns`. ```shell @@ -72,10 +73,9 @@ $ neofs-s3-gw --rpc_endpoint http://morph-chain.neofs.devenv:30333/ --resolve_or ### Processing of requests -Maximum number of clients whose requests can be handled by the gateway can be specified by the value of -`--max_clients_count` parameter, the default value is 100. -`--max_clients_deadline` defines deadline after which the gate sends error `RequestTimeout` to a client, default value -is 30 seconds. +Maximum number of clients whose requests can be handled by the gateway can be specified by the value of +`--max_clients_count` parameter. +`--max_clients_deadline` defines deadline after which the gate sends error `RequestTimeout` to a client. ```shell $ neofs-s3-gw --max_clients_count 150 --max_clients_deadline 1m @@ -83,10 +83,10 @@ $ neofs-s3-gw --max_clients_count 150 --max_clients_deadline 1m ### Connection to NeoFS -Timeout to connect to NeoFS nodes can be set with `--connect_timeout` (default 30s) -and timeout to check node health during rebalance`--healthcheck_timeout` (default 15s). +Timeout to connect to NeoFS nodes can be set with `--connect_timeout` +and timeout to check node health during rebalance`--healthcheck_timeout`. -Also, interval to check node health can be specified by `--rebalance_interval` value, default value is 15s. +Also, interval to check node health can be specified by `--rebalance_interval` value. ```shell $ neofs-s3-gw --healthcheck_timeout 15s --connect_timeout 1m --rebalance_interval 1h @@ -94,14 +94,13 @@ $ neofs-s3-gw --healthcheck_timeout 15s --connect_timeout 1m --rebalance_interva ### Monitoring and metrics -Pprof and Prometheus are integrated into the gateway, but not enabled by -default. To enable them, use `--pprof` and `--metrics` flags or +Pprof and Prometheus are integrated into the gateway. To enable them, use `--pprof` and `--metrics` flags or `S3_GW_PPROF`/`S3_GW_METRICS` environment variables. ## YAML file and environment variables -Example of a YAML configuration file: [.yaml-example](/config/config.yaml) -Examples of environment variables: [.env-example](/config/config.env). +Example of a YAML configuration file: [yaml-example](/config/config.yaml) +Examples of environment variables: [env-example](/config/config.env). A path to a configuration file can be specified with `--config` parameter: @@ -109,21 +108,218 @@ A path to a configuration file can be specified with `--config` parameter: $ neofs-s3-gw --config your-config.yaml ``` -Parameters of the following groups can be configured via a `.yaml` file or environment variables only: -1. logging -- logging level -2. caching -- lifetime and size for each cache -3. notifications -4. CORS -5. default policy of placing containers in NeoFS +### NeoFS S3 Gateway configuration file -### Notifications +This section contains detailed NeoFS S3 Gateway configuration file description +including default config values and some tips to set up configurable values. -You can turn on notifications about successful completions of basic operations, and the gateway will send notifications +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). + +### Structure + +| Section | Description | +|------------|-----------------------------------------| +| no section | [General parameters](#general-section) | +| `wallet` | [Wallet configuration](#wallet-section) | +| `peers` | [Nodes configuration](#peers-section) | +| `tls` | [TLS configuration](#tls-section) | +| `logger` | [Logger configuration](#logger-section) | +| `cache` | [Cache configuration](#cache-section) | +| `nats` | [NATS configuration](#nats-section) | +| `cors` | [CORS configuration](#cors-section) | + +### General section + +```yaml +address: NfgHwwTi3wHAS8aFAN243C5vGbkYDpqLHP + +listen_address: 0.0.0.0:8084 + +rpc_endpoint: http://node4.neofs:40332 +resolve_order: + - nns + - dns + +metrics: false +pprof: false + +connect_timeout: 30s +healthcheck_timeout: 15s +rebalance_interval: 15s + +max_clients_count: 100 +max_clients_deadline: 30s + +default_policy: REP 3 +``` + +| Parameter | Type | Default value | Description | +|------------------------|------------|----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| +| `address` | `string` | | Account address to get from wallet. If omitted default one will be used. | +| `listen_address` | `string` | `0.0.0.0:8080` | The address that the gateway is listening on. | +| `rpc_endpoint` | `string` | | The address of the RPC host to which the gateway connects to resolve bucket names. | +| `resolve_order` | `[]string` | `[dns]` | Order of bucket name resolvers to use. | +| `metrics` | `bool` | `false` | Flag to enable and expose the prometheus metrics. | +| `pprof` | `bool` | `false` | Flag to enable the profiler. | +| `connect_timeout` | `duration` | `30s` | Timeout to connect to a node. | +| `healthcheck_timeout` | `duration` | `15s` | Timeout to check node health during rebalance. | +| `rebalance_interval` | `duration` | `15s` | Interval to check node health. | +| `max_clients_count` | `int` | `100` | Limits for processing of clients' requests. | +| `max_clients_deadline` | `duration` | `30s` | Deadline after which the gate sends error `RequestTimeout` to a client. | +| `default_policy` | `string` | `REP 3` | Default policy of placing containers in NeoFS. If a user sends a request `CreateBucket` and doesn't define policy for placing of a container in NeoFS, the S3 Gateway will put the container with default policy. | + +### `wallet` section + +```yaml +wallet: + passphrase: "password" +``` + +| Parameter | Type | Default value | Description | +|--------------|----------|---------------|-------------------------------| +| `passphrase` | `string` | | Passphrase to decrypt wallet. | + +### `peers` section + +```yaml +# Nodes configuration +# This configuration makes the gateway use the first node (node1.neofs:8080) +# while it's healthy. Otherwise, gateway uses the second node (node2.neofs:8080) +# for 10% of requests and the third node (node3.neofs:8080) for 90% of requests. +# 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: + address: node1.neofs:8080 + priority: 1 + weight: 1 + 1: + address: node2.neofs:8080 + priority: 2 + weight: 0.1 + 2: + address: node3.neofs:8080 + 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. | + +### `tls` section + +```yaml +tls: + cert_file: /path/to/cert + key_file: /path/to/key +``` + +| Parameter | Type | Default value | Description | +|-------------|----------|---------------|------------------------------| +| `cert_file` | `string` | | Path to the TLS certificate. | +| `key_file` | `string` | | Path to the key. | + +### `logger` section + +```yaml +logger: + level: debug +``` + +| Parameter | Type | Default value | Description | +|-----------|----------|---------------|----------------------------------------------------------------------------------------------------| +| `level` | `string` | `debug` | Logging level.
Possible values: `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. | + +### `cache` section + +```yaml +cache: + objects: + lifetime: 300s + size: 150 + list: + lifetime: 1m + size: 100 + names: + lifetime: 1m + size: 1000 + buckets: + lifetime: 1m + size: 500 + system: + lifetime: 2m + size: 1000 + accessbox: + lifetime: 5m + size: 10 +``` + +| Parameter | Type | Default value | Description | +|-------------|-----------------------------------|-----------------------------------|----------------------------------------------------------------------------------------| +| `objects` | [Cache config](#cache-subsection) | `lifetime: 5m`
`size: 1000000` | Cache for objects (NeoFS headers). | +| `list` | [Cache config](#cache-subsection) | `lifetime: 60s`
`size: 100000` | Cache which keeps lists of objects in buckets. | +| `names` | [Cache config](#cache-subsection) | `lifetime: 60s`
`size: 10000` | Cache which contains mapping of nice name to object addresses. | +| `buckets` | [Cache config](#cache-subsection) | `lifetime: 60s`
`size: 1000` | Cache which contains mapping of bucket name to bucket info. | +| `system` | [Cache config](#cache-subsection) | `lifetime: 5m`
`size: 10000` | Cache for system objects in a bucket: bucket settings, notification configuration etc. | +| `accessbox` | [Cache config](#cache-subsection) | `lifetime: 10m`
`size: 100` | Cache which stores access box with tokens by its address. | + +#### `cache` subsection + +```yaml +lifetime: 2m +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. | + +### `nats` section + +This is an advanced section, use with caution. +You can turn on notifications about successful completions of basic operations, and the gateway will send notifications via NATS JetStream. -To enable notifications you need: 1. to configure the NATS server with JetStream -2. to specify NATS parameters for the S3 GW. It's ***necessary*** to define a values of `nats.enable` or -`S3_GW_NATS_ENABLED` as `True` +2. to specify NATS parameters for the S3 GW. It's ***necessary*** to define a values of `nats.enable` or + `S3_GW_NATS_ENABLED` as `True` 3. to configure notifications in a bucket +```yaml +nats: + enabled: true + endpoint: nats://localhost:4222 + timeout: 30s + cert_file: /path/to/cert + key_file: /path/to/key + root_ca: /path/to/ca +``` + +| Parameter | Type | Default value | Description | +|---------------|------------|---------------|------------------------------------------------------| +| `enabled` | `bool` | `false` | Flag to enable the service. | +| `endpoint` | `string` | | NATS endpoint to connect to. | +| `timeout` | `duration` | `30s` | Timeout for the object notification operation. | +| `certificate` | `string` | | Path to the client certificate. | +| `key` | `string` | | Path to the client key. | +| `ca` | `string` | | Override root CA used to verify server certificates. | + +### `cors` section + +```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. | +