429 lines
19 KiB
Markdown
429 lines
19 KiB
Markdown
# FrostFS S3 AuthMate
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Authmate is a tool to create gateway AWS credentials. AWS users
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are authenticated with access key IDs and secrets, while FrostFS users are
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authenticated with key pairs. To complicate things further, we have S3 gateway
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that usually acts on behalf of some user, but the user doesn't necessarily want to
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give their keys to the gateway.
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To solve this, we use FrostFS bearer tokens that are signed by the owner (FrostFS
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"user") and that can implement any kind of policy for FrostFS requests allowed
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to use this token. However, tokens can't be used as AWS credentials directly. Thus,
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they're stored on FrostFS as regular objects, and an access key ID is just an
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address of this object while a secret is generated randomly.
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Tokens are not stored on FrostFS in plaintext, they're encrypted with a set of
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gateway keys. So, in order for a gateway to be able to successfully extract bearer
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token, the object needs to be stored in a container available for the gateway
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to read, and it needs to be encrypted with this gateway's key (among others
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potentially).
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1. [Generation of wallet](#generation-of-wallet)
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2. [Issuance of a secret](#issuance-of-a-secret)
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1. [CLI parameters](#cli-parameters)
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2. [Bearer tokens](#bearer-tokens)
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3. [Session tokens](#session-tokens)
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4. [Containers policy](#containers-policy)
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3. [Obtainment of a secret](#obtaining-credential-secrets)
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4. [Generate presigned url](#generate-presigned-url)
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5. [Update secrets](#update-secret)
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6. [Exit codes](#exit-codes)
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## Generation of wallet
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To generate a wallet for a gateway, run the following command:
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```shell
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$ ./neo-go wallet init -a -w wallet.json
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Enter the name of the account > AccountTestName
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Enter passphrase >
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Confirm passphrase >
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{
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"version": "3.0",
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"accounts": [
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{
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"address": "NhLQpDnerpviUWDF77j5qyjFgavCmasJ4p",
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"key": "6PYUFyYpJ1JGyMrYV8NqeUFLKfpEVHsGGjCYtTDkjnKaSgYizRBZxVerte",
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"label": "AccountTestName",
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"contract": {
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"script": "DCECXCsUZPwUyKHs6nAyyCvJ5s/vLwZkkVtWNC0zWzH8a9dBVuezJw==",
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"parameters": [
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{
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"name": "parameter0",
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"type": "Signature"
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}
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],
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"deployed": false
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},
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"lock": false,
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"isDefault": false
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}
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],
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"scrypt": {
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"n": 16384,
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"r": 8,
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"p": 8
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},
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"extra": {
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"Tokens": null
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}
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}
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wallet is successfully created, the file location is wallet.json
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```
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To get the public key from the wallet:
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```shell
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$ ./bin/neo-go wallet dump-keys -w wallet.json
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NhLQpDnerpviUWDF77j5qyjFgavCmasJ4p (simple signature contract):
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025c2b1464fc14c8a1ecea7032c82bc9e6cfef2f0664915b56342d335b31fc6bd7
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```
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## Issuance of a secret
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To issue a secret means to create Bearer and, optionally, Session tokens and
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put them as an object into a container on the FrostFS network.
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### CLI parameters
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**Required parameters:**
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* `--wallet` is a path to a wallet `.json` file. You can provide a passphrase to decrypt
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a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
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interactively. You can also specify an account address to use from a wallet using the `--address` parameter.
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* `--peer` is an address of a FrostFS peer to connect to
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* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates). The
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tokens are encrypted by a set of gateway keys, so you need to pass them as well.
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You can issue a secret using the parameters above only. The tool will
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1. create a new container
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1. without a friendly name
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2. with ACL `0x3c8c8cce` -- all operations are forbidden for `OTHERS` and `BEARER` user groups, except for `GET`
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3. with policy `REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
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2. put bearer and session tokens with default rules (details in [Bearer tokens](#bearer-tokens) and
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[Session tokens](#session-tokens))
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E.g.:
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```shell
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$ frostfs-s3-authmate issue-secret --wallet wallet.json \
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--peer 192.168.130.71:8080 \
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--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf\
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--gate-public-key 0317585fa8274f7afdf1fc5f2a2e7bece549d5175c4e5182e37924f30229aef967
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Enter password for wallet.json >
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{
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"access_key_id": "5g933dyLEkXbbAspouhPPTiyLZRg4axBW1axSPD87eVT0AiXsH4AjYy1iTJ4C1WExzjBrSobJsQFWEyKLREe5sQYM",
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"initial_access_key_id": "5g933dyLEkXbbAspouhPPTiyLZRg4axBW1axSPD87eVT0AiXsH4AjYy1iTJ4C1WExzjBrSobJsQFWEyKLREe5sQYM",
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"secret_access_key": "438bbd8243060e1e1c9dd4821756914a6e872ce29bf203b68f81b140ac91231c",
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"owner_private_key": "274fdd6e71fc6a6b8fe77bec500254115d66d6d17347d7db0880d2eb80afc72a",
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"container_id":"5g933dyLEkXbbAspouhPPTiyLZRg4axBW1axSPD87eVT"
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}
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```
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`access_key_id` and `secret_access_key` are AWS credentials that you can use with any S3 client.
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`initial_access_key_id` contains the first credentials in the chain of credentials versions
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(can be useful when you update your credentials).
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`access_key_id` consists of Base58 encoded containerID(cid) and objectID(oid) stored on the FrostFS network and
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containing
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the secret. Format of `access_key_id`: `%cid0%oid`, where 0(zero) is a delimiter.
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**Optional parameters:**
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* `--container-id` - you can put the tokens into an existing container, but this way is ***not recommended***.
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* `--container-friendly-name` -- name of a container with tokens, by default container will not have a friendly name
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* `--container-placement-policy` - placement policy of auth container to put the secret into. Default value is
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`REP 2 IN X CBF 3 SELECT 2 FROM * AS X`
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* `--lifetime`-- lifetime of tokens. For example 50h30m (note: max time unit is an hour so to set a day you should use
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24h). Default value is `720h` (30 days). It will be ceil rounded to the nearest amount of epoch
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* `--aws-cli-credentials` - path to the aws cli credentials file, where authmate will write `access_key_id` and
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`secret_access_key` to
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* `--rpc-endpoint` - NEO node RPC address (must be provided if `--container-id` is NNS name)
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* `--access-key-id` - access key id of s3 credential that must be created (must be unique)
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* `--secret-access-key` - secret access key of s3 credential that must be used
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You also can specify `AccessKeyID`/`SecretAccessKey` pair that should be created:
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```shell
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$ frostfs-s3-authmate issue-secret --wallet wallet.json \
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--peer 192.168.130.71:8080 \
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--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
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--gate-public-key 0317585fa8274f7afdf1fc5f2a2e7bece549d5175c4e5182e37924f30229aef967 \
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--access-key-id my-access-key \
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--secret-access-key my-secret-key \
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--container-id BpExV76416Vo7GrkJsGwXGoLM35xsBwup8voedDZR3c6
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Enter password for wallet.json >
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{
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"initial_access_key_id": "my-access-key-3",
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"access_key_id": "my-access-key",
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"secret_access_key": "my-secret-key",
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"owner_private_key": "d9972cc4f21b07a90f4b347c72c33c1d1611c2b9a2cfd0cc28cee8cb221e8e55",
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"wallet_public_key": "031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a",
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"container_id": "BpExV76416Vo7GrkJsGwXGoLM35xsBwup8voedDZR3c6"
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}
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```
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### Bearer tokens
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Creation of bearer tokens is mandatory.
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Bearer token will be created with `impersonate` flag. It means that gate (which will use such token to interact with
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node) can have access to your private containers or to containers in which eACL grants access to you by public key.
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### Session tokens
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With a session token, there are 3 options:
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1. append `--session-tokens` parameter with your custom rules in json format (as a string or file path). E.g.:
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```shell
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$ frostfs-s3-authmate issue-secret --wallet wallet.json \
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--peer 192.168.130.71:8080 \
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--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
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--session-tokens session.json
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```
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where content of `session.json`:
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```json
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[
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{
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"verb": "PUT",
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"containerID": null
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},
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{
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"verb": "DELETE",
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"containerID": null
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}
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]
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```
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Available `verb` values: `PUT`, `DELETE`.
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If `containerID` is `null` or omitted, then session token rule will be applied
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to all containers. Otherwise, specify `containerID` value in human-readable
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format (base58 encoded string).
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> **_NB!_** To create buckets in FrostFS it's necessary to have session tokens with `PUT` permissions.
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2. append `--session-tokens` parameter with the value `none` -- no session token will be created
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3. skip the parameter, and `authmate` will create session tokens with default rules (the same as in `session.json`
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in example above)
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### Containers policy
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Rules for mapping
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of `LocationConstraint` ([aws spec](https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateBucket.html#API_CreateBucket_RequestBody))
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to `PlacementPolicy`
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can be set via parameter `--container-policy` (json-string and file path allowed):
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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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## User registration
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To be able to interact with FrostFS Storage using s3-gw the user (whose credential is used) must be registered in
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`frostfsid` contract and also must have allowed chain rules in `policy` contract.
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### CLI parameters
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**Required parameters:**
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* `--wallet` is a path to a wallet `.json` file. You can provide a passphrase to decrypt
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a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
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interactively. You can also specify an account address to use from a wallet using the `--address` parameter. Key from
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this wallet will be registered in `frostfsid` contract and for this key allowed rules will be added.
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* `--rpc-endpoint` -- NEO node RPC address.
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**Optional parameters:**
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* `--frostfsid-contract` -- FrostfsID contract hash (LE) or name in NNS to register public key in contract (
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default: `frostfsid.frostfs`).
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* `--username` -- Username to set for public key in frostfsid contract.
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* `--namespace` -- Namespace to register public key in frostfsid contract and add allowed rules (default: `""`).
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* `--contract-wallet` -- is a path to a contract wallet `.json` file. This wallet will be used to sign transactions
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(if missing key from wallet flag be used). You can provide a passphrase to decrypt
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a wallet via environment variable `AUTHMATE_WALLET_CONTRACT_PASSPHRASE`, or you will be asked to enter a passphrase
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interactively. You can also specify an account address to use from a wallet using the `--contract-wallet-address`
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parameter.
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* `--policy-contract` -- Policy contract hash (LE) or name in NNS to save allowed chains for key (
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default: `policy.frostfs`).
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* `--proxy-contract` -- Proxy contract hash (LE) or name in NNS to use when interact with frostfsid contract (
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default: `proxy.frostfs`).
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Example command that not only create access keys for key, but also register key in frostfsid contract and
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create allowed rules in policy contract:
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```shell
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$ frostfs-s3-authmate register-user --wallet subject-wallet.json \
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--contract-wallet wallet-registered-in-proxy-contract.json \
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--frostfsid-contract frostfsid.frostfs \
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--namespace "" \
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--usrername devenv \
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--proxy-contract proxy.frostfs \
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--policy-contract policy.frostfs \
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--rpc-endpoint http://morph-chain.frostfs.devenv:30333
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Added policy rules:
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kind: 'u'
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entity: ':NbUgTSFvPmsRxmGeWpuuGeJUoRoi6PErcM'
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chains:
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[{"ID":"czM6YXV0aG1hdGU=","Rules":[{"Status":"Allow","Actions":{"Inverted":false,"Names":["*"]},"Resources":{"Inverted":false,"Names":["*"]},"Any":false,"Condition":null}],"MatchType":"DenyPriority"},{"ID":"aW5ncmVzczphdXRobWF0ZQ==","Rules":[{"Status":"Allow","Actions":{"Inverted":false,"Names":["*"]},"Resources":{"Inverted":false,"Names":["*"]},"Any":false,"Condition":null}],"MatchType":"DenyPriority"}]
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```
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## Obtaining credential secrets
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You can get a secret access key and bearer token associated with an access key ID by obtaining a
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secret stored on the FrostFS network. Here is an example of providing one password (for `wallet.json`) via env variable
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and the other (for `gate-wallet.json`) interactively:
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```shell
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$ AUTHMATE_WALLET_PASSPHRASE=some-pwd \
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frostfs-s3-authmate obtain-secret --wallet wallet.json \
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--peer 192.168.130.71:8080 \
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--gate-wallet gate-wallet.json \
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--access-key-id 5g933dyLEkXbbAspouhPPTiyLZRg4axBW1axSPD87eVT0AiXsH4AjYy1iTJ4C1WExzjBrSobJsQFWEyKLREe5sQYM
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Enter password for gate-wallet.json >
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{
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"bearer_token": {
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"body": {
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"eaclTable": null,
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"ownerID": {
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"value": "Naq5pfYuroaGE7h9o5iQsPR/1aRe5gmWrg=="
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},
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"lifetime": {
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"exp": "10813",
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"nbf": "13",
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"iat": "13"
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},
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"allowImpersonate": true
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},
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"signature": {
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"key": "Axpsb7vfAso1F0X6hrm6WpRS14WsT3/Ct1SMoqRsT89K",
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"signature": "BMIOqcNEwTughI26ivFw7vnGyzhWip8NsgSYTTf21aVkv0AH7bgE9R91gglYgS6tGNVcWZMTisYCJCT3OEQ9lkw=",
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"scheme": "ECDSA_SHA512"
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}
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},
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"secret_access_key": "438bbd8243060e1e1c9dd4821756914a6e872ce29bf203b68f81b140ac91231c"
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}
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```
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## Generate presigned URL
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You can generate [presigned url](https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-presigned-url.html)
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using AWS credentials from `~/.aws/credentials` (you can specify profile using the `--profile` flag)
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with the following command:
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```shell
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$ frostfs-s3-authmate generate-presigned-url --endpoint http://localhost:8084 \
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--method get --bucket presigned --object obj --lifetime 30s
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{
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"URL": "http://localhost:8084/presigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=6UpmiuYspPLMWfyhEKYmZQSsTGkFLS5MhQVdsda3fhz908Hw9eo9urTmaJtfvHMHUpY8SWAptk61bns2Js8f1M5tZ%2F20220615%2Fus-east-2%2Fs3%2Faws4_request&X-Amz-Date=20220615T084203Z&X-Amz-Expires=30&X-Amz-SignedHeaders=host&X-Amz-Signature=47f74d4b84566708a17dded05cce732690745f141235215104ad051e265e3c59"
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}
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```
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You can also provide credential explicitly:
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```shell
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$ frostfs-s3-authmate generate-presigned-url --endpoint http://localhost:8084 \
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--method put --bucket presigned --object obj --lifetime 12h \
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--region ru --aws-secret-access-key c2d65ef2980f03f4f495bdebedeeae760496697880d61d106bb9a4e5cd2e0607 \
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--aws-access-key-id ETaA2CadPcA7bAkLsML2PbTudXY8uRt2PDjCCwkvRv9s0FDCxWDXYc1SA1vKv8KbyCNsLY2AmAjJ92Vz5rgvsFCy
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{
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"URL": "http://localhost:8084/presigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ETaA2CadPcA7bAkLsML2PbTudXY8uRt2PDjCCwkvRv9s0FDCxWDXYc1SA1vKv8KbyCNsLY2AmAjJ92Vz5rgvsFCy%2F20220615%2Fru%2Fs3%2Faws4_request&X-Amz-Date=20220615T084455Z&X-Amz-Expires=43200&X-Amz-SignedHeaders=host&X-Amz-Signature=ac92aecc3787eeed03922ea82af082091c806f1bb58a7101602ed21369815d04"
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}
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```
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### Upload file with presigned URL
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1. Generate presigned URL to upload object `obj` to bucket `presigned`
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```shell
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$ frostfs-s3-authmate generate-presigned-url --endpoint http://localhost:8084 \
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--method put --bucket presigned --object obj --lifetime 30s
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{
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"URL": "http://localhost:8084/presigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=CYfbvKwSC9VNvttj5snyEZ5Ttr2VaBabpw7mRuEzNXyw09ewUERj6MGDKfyckfg5VZ39GfXbwLwz62UPVeRxhJDet%2F20241029%2Fdefault%2Fs3%2Faws4_request&X-Amz-Date=20241029T145726Z&X-Amz-Expires=30&X-Amz-SignedHeaders=host&X-Amz-Signature=2bb13b3e6448968219ad95147debe49e37bce5ce3ed1344c4015f43cb444a956"
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}
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```
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2. Upload file using `curl`
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```shell
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curl --upload-file /path/to/file 'http://localhost:8084/presigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=CYfbvKwSC9VNvttj5snyEZ5Ttr2VaBabpw7mRuEzNXyw09ewUERj6MGDKfyckfg5VZ39GfXbwLwz62UPVeRxhJDet%2F20241029%2Fdefault%2Fs3%2Faws4_request&X-Amz-Date=20241029T145726Z&X-Amz-Expires=30&X-Amz-SignedHeaders=host&X-Amz-Signature=2bb13b3e6448968219ad95147debe49e37bce5ce3ed1344c4015f43cb444a956'
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```
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### AWS CLI
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You can also can get the presigned URL (only for GET) using aws cli v2:
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|
|
|
```shell
|
|
$ aws s3 --endpoint http://localhost:8084 presign s3://pregigned/obj
|
|
|
|
http://localhost:8084/pregigned/obj?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=6UpmiuYspPLMWfyhEKYmZQSsTGkFLS5MhQVdsda3fhz908Hw9eo9urTmaJtfvHMHUpY8SWAptk61bns2Js8f1M5tZ%2F20220615%2Fus-east-2%2Fs3%2Faws4_request&X-Amz-Date=20220615T072348Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&X-Amz-Signature=b82c13952534b1bba699a718f2d42d135c2833a1e64030d4ce0e198af46551d4
|
|
```
|
|
|
|
## Update secret
|
|
|
|
You can extend list of s3 gates that can accept already issued credentials.
|
|
To do this use `frostfs-s3-authmate update-secret` command:
|
|
|
|
**Required parameters:**
|
|
|
|
* `--wallet` is a path to a user wallet `.json` file. You can provide a passphrase to decrypt
|
|
a wallet via environment variable `AUTHMATE_WALLET_PASSPHRASE`, or you will be asked to enter a passphrase
|
|
interactively. You can also specify an account address to use from a wallet using the `--address` parameter.
|
|
* `--gate-wallet` is a path to a gate wallet `.json` file (need to decrypt current access box version). You can provide
|
|
a passphrase to decrypt
|
|
a wallet via environment variable `AUTHMATE_WALLET_GATE_PASSPHRASE`, or you will be asked to enter a passphrase
|
|
interactively. You can also specify an account address to use from a wallet using the `--gate-address` parameter.
|
|
* `--peer` is an address of a FrostFS peer to connect to
|
|
* `--gate-public-key` is a public `secp256r1` 33-byte short key of a gate (use flags repeatedly for multiple gates).
|
|
* `--access-key-id` is a credential id to update.
|
|
|
|
```shell
|
|
$ frostfs-s3-authmate update-secret --wallet wallet.json --gate-wallet s3-wallet.json \
|
|
--peer 192.168.130.71:8080 \
|
|
--gate-public-key 0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf \
|
|
--gate-public-key 0317585fa8274f7afdf1fc5f2a2e7bece549d5175c4e5182e37924f30229aef967 \
|
|
--gate-public-key 0223450b9db6d0c083e9c6de1f7d8fd22858d70829e09afa39828bb2416bf190fc \
|
|
--access-key-id HwrdXgetdGcEWAQwi68r1PMvw4iSm1Y5Z1fsFNSD6sQP04QomYDfYsspMhENEDhzTGwGxm86Q6R2Weugf3PG4sJ3M
|
|
|
|
Enter password for wallet.json >
|
|
Enter password for s3-wallet.json >
|
|
|
|
{
|
|
"initial_access_key_id": "HwrdXgetdGcEWAQwi68r1PMvw4iSm1Y5Z1fsFNSD6sQP04QomYDfYsspMhENEDhzTGwGxm86Q6R2Weugf3PG4sJ3M",
|
|
"access_key_id": "HwrdXgetdGcEWAQwi68r1PMvw4iSm1Y5Z1fsFNSD6sQP0xXf1ahGndNkydG9MrL9WmCebrPwdSHTAysQa9w6yCNJ",
|
|
"secret_access_key": "f6a65481fd2752e69e4aa80a6fdcad70cfbf8304d2b3b8c2f9c15212aeee3ae7",
|
|
"owner_private_key": "7f40233893e4f4a54e4f2f52455a0e6d563f7eb0233a985094937ed69faef681",
|
|
"wallet_public_key": "031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a",
|
|
"container_id": "HwrdXgetdGcEWAQwi68r1PMvw4iSm1Y5Z1fsFNSD6sQP"
|
|
}
|
|
```
|
|
|
|
## Exit codes
|
|
|
|
There are several non-zero exit codes added at the moment.
|
|
|
|
| Code | Description |
|
|
|------|--------------------------------------------------------------------------------------------|
|
|
| 1 | Any unknown errors, or errors generated by the parser of command line parameters. |
|
|
| 2 | Preparation errors: malformed configuration, issues with input data parsing. |
|
|
| 3 | FrostFS errors: connectivity problems, misconfiguration. |
|
|
| 4 | Business logic errors: `authmate` could not execute its task because of some restrictions. |
|