Feng Ruohang
c46b16ec62
The transitional references land in one commit, because they are only correct together: the repository is pgsty/silo, its default branch is main, and nothing in the tree should point a user at the old names. Changed: - Workflow branch filters. go.yml and vulncheck.yml gated on `branches: master` for both push and pull_request, so renaming the default branch would have taken automatic CI offline with no error and no signal - the workflows would simply never trigger again. They now name main. - Release target. goreleaser's `release.github.name` becomes silo, which is what actually decides where a tagged build publishes. sign-release-rpms.sh's GH_REPO default follows. - The OCI `image.source` label, the Helm chart `sources` entry, the security advisory link in the issue-template config, and the go.mod comment citing the LDAP TLS fix. - 115 occurrences across README, README_ZH, SECURITY, CONTRIBUTING and 30 docs pages, including 72 links that also carried the master branch in their path. Those matter most: GitHub redirects clone, fetch, push and web URLs after a rename, but raw.githubusercontent.com does not, and neither follows a branch rename - every one of those links would 404 twice over. - Three error strings in cmd/erasure-sets.go, cmd/storage-errors.go and internal/config/errors.go that print an issue URL to operators. These are Go string literals inside rebrand-guard's brand allowlist, so the baseline is regenerated. The regeneration removes exactly those three entries and adds none; all twelve other protected sets, including the 9014 exported symbols, are byte-identical. - The transitional-naming disclaimers in README, README_ZH, SECURITY and CONTRIBUTING are dropped, since they no longer describe anything. Deliberately unchanged, all three because they exist to reject or freeze the old name rather than to point at it: - buildscripts/minio-upgrade.sh pins pgsty/minio@sha256:b6bfe72... - the frozen pre-rebrand image is the control group for the MinIO-to-Silo upgrade test. - helm-migration-guard rejects any rendered container still pulling pgsty/minio. - verify-rebrand.sh rejects the same in the delivery surfaces. Also unchanged: docs/config/README.md links to pgsty/mc/blob/master, and that repository's default branch really is still master. It moves when mc does. verify-rebrand.sh gains three assertions so this cannot silently regress: no source reference may name pgsty/minio outside the three allowlisted guards, no link may target pgsty/silo's master branch, and go.yml and vulncheck.yml must filter on main. Both new rejections were negative-tested - reintroducing a master branch filter and adding a pgsty/minio URL each fail the gate with the specific message. This commit assumes the rename actually happens. Until the GitHub branch and repository renames are executed, the links it introduces do not resolve. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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AssumeRoleWithClientGrants
Introduction
Returns a set of temporary security credentials for applications/clients who have been authenticated through client credential grants provided by identity provider. Example providers include KeyCloak, Okta etc.
Calling AssumeRoleWithClientGrants does not require the use of Silo default credentials. Therefore, client application can be distributed that requests temporary security credentials without including Silo default credentials. Instead, the identity of the caller is validated by using a JWT access token from the identity provider. The temporary security credentials returned by this API consists of an access key, a secret key, and a security token. Applications can use these temporary security credentials to sign calls to Silo API operations.
Breaking change (CVE-2026-33322): releases after RELEASE.2026-03-25T00-00-00Z validate the JWT access token with the provider JWKS endpoint advertised by the configured OpenID discovery document. In practice, Silo currently accepts the RSA PKCS#1 v1.5 and ECDSA families already implemented in the verifier (RS256, RS384, RS512, ES256, ES384, ES512, plus the existing RS3* and ES3* aliases). HMAC-signed tokens such as HS256, HS384, and HS512 are rejected. Algorithms such as PS256 and EdDSA are not currently supported. MINIO_IDENTITY_OPENID_CLIENT_SECRET is used for OpenID/OAuth client interactions only and is not used as a JWT verification key. If your provider previously issued HMAC-signed access tokens for this flow, reconfigure it to publish RSA or ECDSA signing keys through JWKS before upgrading.
By default, the temporary security credentials created by AssumeRoleWithClientGrants last for one hour. However, use the optional DurationSeconds parameter to specify the duration of the credentials. This value varies from 900 seconds (15 minutes) up to the maximum session duration of 365 days.
API Request Parameters
Token
The OAuth 2.0 access token that is provided by the identity provider. Application must get this token by authenticating the application using client credential grants before the application makes an AssumeRoleWithClientGrants call.
| Params | Value |
|---|---|
| Type | String |
| Length Constraints | Minimum length of 4. Maximum length of 2048. |
| Required | Yes |
Version
Indicates STS API version information, the only supported value is '2011-06-15'. This value is borrowed from AWS STS API documentation for compatibility reasons.
| Params | Value |
|---|---|
| Type | String |
| Required | Yes |
DurationSeconds
The duration, in seconds. The value can range from 900 seconds (15 minutes) up to 365 days. If value is higher than this setting, then operation fails. By default, the value is set to 3600 seconds. If no DurationSeconds is specified expiry seconds is obtained from Token.
| Params | Value |
|---|---|
| Type | Integer |
| Valid Range | Minimum value of 900. Maximum value of 31536000. |
| Required | No |
Policy
An IAM policy in JSON format that you want to use as an inline session policy. This parameter is optional. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the canned policy name and the policy set here. You cannot use this policy to grant more permissions than those allowed by the canned policy name being assumed.
| Params | Value |
|---|---|
| Type | String |
| Valid Range | Minimum length of 1. Maximum length of 2048. |
| Required | No |
Response Elements
XML response for this API is similar to AWS STS AssumeRoleWithWebIdentity
Errors
XML error response for this API is similar to AWS STS AssumeRoleWithWebIdentity
Sample POST Request
http://silo.cluster:9000?Action=AssumeRoleWithClientGrants&DurationSeconds=3600&Token=eyJ4NXQiOiJOVEF4Wm1NeE5ETXlaRGczTVRVMVpHTTBNekV6T0RKaFpXSTRORE5sWkRVMU9HRmtOakZpTVEiLCJraWQiOiJOVEF4Wm1NeE5ETXlaRGczTVRVMVpHTTBNekV6T0RKaFpXSTRORE5sWkRVMU9HRmtOakZpTVEiLCJhbGciOiJSUzI1NiJ9.eyJhdWQiOiJQb0VnWFA2dVZPNDVJc0VOUm5nRFhqNUF1NVlhIiwiYXpwIjoiUG9FZ1hQNnVWTzQ1SXNFTlJuZ0RYajVBdTVZYSIsImlzcyI6Imh0dHBzOlwvXC9sb2NhbGhvc3Q6OTQ0M1wvb2F1dGgyXC90b2tlbiIsImV4cCI6MTU0MTgwOTU4MiwiaWF0IjoxNTQxODA1OTgyLCJqdGkiOiI2Y2YyMGIwZS1lNGZmLTQzZmQtYTdiYS1kYTc3YTE3YzM2MzYifQ.Jm29jPliRvrK6Os34nSK3rhzIYLFjE__zdVGNng3uGKXGKzP3We_i6NPnhA0szJXMOKglXzUF1UgSz8MctbaxFS8XDusQPVe4LkB_45hwBm6TmBxzui911nt-1RbBLN_jZIlvl2lPrbTUH5hSn9kEkph6seWanTNQpz9tNEoVa6R_OX3kpJqxe8tLQUWw453A1JTwFNhdHa6-f1K8_Q_eEZ_4gOYINQ9t_fhTibdbkXZkJQFLop-Jwoybi9s4nwQU_dATocgcufq5eCeNItQeleT-23lGxIz0X7CiJrJynYLdd-ER0F77SumqEb5iCxhxuf4H7dovwd1kAmyKzLxpw&Version=2011-06-15
Sample Response
<?xml version="1.0" encoding="UTF-8"?>
<AssumeRoleWithClientGrantsResponse xmlns="https://sts.amazonaws.com/doc/2011-06-15/">
<AssumeRoleWithClientGrantsResult>
<AssumedRoleUser>
<Arn/>
<AssumeRoleId/>
</AssumedRoleUser>
<Credentials>
<AccessKeyId>Y4RJU1RNFGK48LGO9I2S</AccessKeyId>
<SecretAccessKey>sYLRKS1Z7hSjluf6gEbb9066hnx315wHTiACPAjg</SecretAccessKey>
<Expiration>2019-08-08T20:26:12Z</Expiration>
<SessionToken>eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJhY2Nlc3NLZXkiOiJZNFJKVTFSTkZHSzQ4TEdPOUkyUyIsImF1ZCI6IlBvRWdYUDZ1Vk80NUlzRU5SbmdEWGo1QXU1WWEiLCJhenAiOiJQb0VnWFA2dVZPNDVJc0VOUm5nRFhqNUF1NVlhIiwiZXhwIjoxNTQxODExMDcxLCJpYXQiOjE1NDE4MDc0NzEsImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0Ojk0NDMvb2F1dGgyL3Rva2VuIiwianRpIjoiYTBiMjc2MjktZWUxYS00M2JmLTg3MzktZjMzNzRhNGNkYmMwIn0.ewHqKVFTaP-j_kgZrcOEKroNUjk10GEp8bqQjxBbYVovV0nHO985VnRESFbcT6XMDDKHZiWqN2vi_ETX_u3Q-w</SessionToken>
</Credentials>
</AssumeRoleWithClientGrantsResult>
<ResponseMetadata/>
</AssumeRoleWithClientGrantsResponse>
Using ClientGrants API
export MINIO_ROOT_USER=minio
export MINIO_ROOT_PASSWORD=silo123
export MINIO_IDENTITY_OPENID_CONFIG_URL=http://localhost:8080/auth/realms/demo/.well-known/openid-configuration
export MINIO_IDENTITY_OPENID_CLIENT_ID="843351d4-1080-11ea-aa20-271ecba3924a"
silo server /mnt/export
Testing with an example
Obtaining client ID and secrets follow Keycloak configuring documentation
$ go run client-grants.go -cid PoEgXP6uVO45IsENRngDXj5Au5Ya -csec eKsw6z8CtOJVBtrOWvhRWL4TUCga
##### Credentials
{
"accessKey": "NUIBORZYTV2HG2BMRSXR",
"secretKey": "qQlP5O7CFPc5m5IXf1vYhuVTFj7BRVJqh0FqZ86S",
"expiration": "2018-08-21T17:10:29-07:00",
"sessionToken": "eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJhY2Nlc3NLZXkiOiJOVUlCT1JaWVRWMkhHMkJNUlNYUiIsImF1ZCI6IlBvRWdYUDZ1Vk80NUlzRU5SbmdEWGo1QXU1WWEiLCJhenAiOiJQb0VnWFA2dVZPNDVJc0VOUm5nRFhqNUF1NVlhIiwiZXhwIjoxNTM0ODk2NjI5LCJpYXQiOjE1MzQ4OTMwMjksImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0Ojk0NDMvb2F1dGgyL3Rva2VuIiwianRpIjoiNjY2OTZjZTctN2U1Ny00ZjU5LWI0MWQtM2E1YTMzZGZiNjA4In0.eJONnVaSVHypiXKEARSMnSKgr-2mlC2Sr4fEGJitLcJF_at3LeNdTHv0_oHsv6ZZA3zueVGgFlVXMlREgr9LXA"
}