Latest Articles - Page 5

Fix a Keycloak SAML invalid signature by comparing certificate fingerprints, checking whether the response or assertion was signed, and separating a stale key from an unsigned AuthnRequest.

Compare a Keycloak SAML login that starts at the service provider with one that starts at the IdP-initiated client URL, including RelayState, InResponseTo, and the broker path that accepts an unsolicited response.

Keycloak rejects a SAML assertion when AudienceRestriction does not contain the service provider entity ID. Match the SAML client ID to that entity ID, and add an audience mapper only for an extra audience.

Decode a Keycloak SAMLResponse or SAMLRequest on Linux. HTTP-POST is Base64 XML. HTTP-Redirect is DEFLATE, then Base64, then URL encoding. Read Issuer, Destination, NameID, and Audience locally.

Move an existing oauth2-proxy login from ingress-nginx to Envoy Gateway, replace auth-url with a SecurityPolicy, and avoid the 202 response that does not admit the request.

Split requests between two app versions with HTTPRoute backend weights, map that ratio to ingress-nginx canary-weight, and roll the canary back to zero.

Keycloak shows Invalid redirect uri when a SAML AssertionConsumerServiceURL is not a Valid Redirect URI. Register the exact ACS, and use the POST binding or Master SAML Processing URL only when the request omits one.

See how cert-manager fills an Envoy Gateway TLS Secret with Let's Encrypt, why HTTP-01 needs port 80, and how to read the renewal time before the certificate expires.

Choose a Keycloak SAML NameID format and value, including email and a user attribute, and check the NameID element against what the service provider requested.

See how ingress2gateway handles rewrite-target and regex paths, why a capture group can arrive as the literal path /$2, when to use ReplacePrefixMatch, and how to preserve capture groups with an Envoy HTTPRouteFilter.

Map a Keycloak realm role, a client role, and a group into an outgoing SAML assertion, then limit which names the service provider receives.

Keep ingress-nginx serving while you convert one hostname to a Gateway and HTTPRoutes, compare Envoy on its own address, and change DNS only after the paths match.

Add a Keycloak user attribute and email to an outgoing SAML assertion with a protocol mapper, then read the Attribute element in the response.

Download a Keycloak SAML IdP descriptor, read the entity ID, SSO URL, and signing certificate, then import it into a second realm and check the broker SP metadata.

Configure SAML SSO with one Keycloak realm as the IdP and a second realm as the SP/broker, then finish one SP-initiated login on Keycloak 26.8.0.

Provision Keycloak users and groups with the SCIM 2.0 API: create, search, update, deactivate, and delete accounts, including PATCH, filters, and an enterprise user attribute.

Diagnose Keycloak SCIM 401 and 403 errors with curl: missing bearer tokens, invalid token audience, realm-management permissions, and protected admin resources.

Enable the Keycloak SCIM 2.0 API, configure a realm and service-account client, fix the token audience, and test SCIM endpoints with curl.

Convert an attached EBS gp2 volume to gp3 online with modify-volume, monitor describe-volumes-modifications, tune gp3 IOPS and throughput, and verify the filesystem and data stay intact on RHEL 10.2 in ap-south-1.

Why AWS Systems Manager Session Manager returns TargetNotConnected, how to confirm account and Region, read Fleet Manager ping status, verify the SSM agent and instance profile, check outbound HTTPS and VPC endpoints, …

Step by step instructions to protect S3 website with basic authentication using AWS Lambda and Cloudfront

Fix AWS AccessDenied for not authorized to perform iam PassRole when creating Lambda, ECS, or other resources that need an execution role. Identify the caller, add PassRole to the caller policy, restrict by role ARN and …

How AWS IAM explicit deny and implicit deny differ, what AccessDenied messages can reveal, and how to inspect identity-policy evaluation with simulate-principal-policy.

When sts:AssumeRole returns AccessDenied, check caller identity policy and the role trust policy together, read the CLI error, fix ExternalId or principal mismatches, and verify with get-caller-identity after a …

Configure multiple AWS CLI named profiles for dev and prod accounts, switch with --profile or AWS_PROFILE, verify the active account with aws sts get-caller-identity, and avoid profile and credential precedence mistakes …

Check which credentials AWS CLI is using with aws configure list for credential source, sts get-caller-identity for the active account or role, environment and profile checks, and redacted debug provider lines on Linux …

When AWS returns InvalidAccessKeyId or “The AWS Access Key Id you provided does not exist in our records,” use aws configure list and IAM list-access-keys to find stale credentials and rotate safely.

When AWS CLI returns ExpiredToken, temporary STS credentials passed their expiration — use aws configure list to find the source, refresh SSO, AssumeRole, or exported AWS_SESSION_TOKEN values, then confirm with sts …

Fix AWS CLI SSL certificate verify failed by reading the TLS error, inspecting the certificate chain with openssl s_client, building a CA bundle with your corporate root, and configuring --ca-bundle, AWS_CA_BUNDLE, or …

Fix AWS CLI Unable to locate credentials by reading aws configure list, checking AWS_PROFILE and AWS environment variables, shared credential files, aws login, IAM Identity Center, and EC2 instance profile credentials on …