LiteLLM / LiteLLM

GCP IAM auth fails with Redis Cluster — LiteLLM sync path uses redis_connect_func which RedisCluster bootstrap ignores

Fix GCP IAM authentication failure when running LiteLLM proxy with Redis Cluster — the sync auth path creates a standalone redis client via redis_connect_func that doesn't participate in Redis Cluster topology Includes evidence for LiteLLM troubleshooting demand.

Source-backed Last updated May 21, 2026 1 source Needs local verification

Category: LiteLLM
Error signature: GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores
Quick fix: Verify the account session, API key, provider settings, and environment where the failing tool is running.
Updated: May 21, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for LiteLLM, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores is a LiteLLM failure pattern reported for developers trying to fix gcp iam authentication failure when running litellm proxy with redis cluster — the sync auth path creates a standalone redis client via redis_connect_func that doesn't participate in redis cluster topology. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

GitHub issue #28379 (May 21, 2026) on BerriAI/litellm, labeled 'bug' and 'SDK'. Direct infrastructure compatibility error affecting production deployments combining GCP workload identity + Redis Cluster + LiteLLM proxy. High commercial value for enterprise cloud deployments.

Common causes

GitHub issue #28379 (May 21, 2026) on BerriAI/litellm, labeled 'bug' and 'SDK'. Direct infrastructure compatibility error affecting production deployments combining GCP workload identity + Redis Cluster + LiteLLM proxy. High commercial value for enterprise cloud deployments.

Quick fixes

Confirm the exact error signature matches GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores.
Check the LiteLLM account, local tool state, and provider configuration involved in the failing workflow.
Verify the account session, API key, provider settings, and environment where the failing tool is running.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores exactly before applying the quick fix.
Compare the failing environment with LiteLLM versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores mean in LiteLLM?

GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores indicates the workflow described by "GCP IAM auth fails with Redis Cluster — LiteLLM sync path uses redis_connect_func which RedisCluster bootstrap ignores" failed in a LiteLLM context. Start by confirming the exact signature and the component that emitted it.

What should I check first for GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores?

Check whether this cause matches your environment: GitHub issue #28379 (May 21, 2026) on BerriAI/litellm, labeled 'bug' and 'SDK'. Direct infrastructure compatibility error affecting production deployments combining GCP workload identity + Redis Cluster + LiteLLM proxy. High commercial value for enterprise cloud deployments.

Is the GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores guidance source-backed?

The "GCP IAM auth fails with Redis Cluster — LiteLLM sync path uses redis_connect_func which RedisCluster bootstrap ignores" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores?

For "GCP IAM auth fails with Redis Cluster — LiteLLM sync path uses redis_connect_func which RedisCluster bootstrap ignores", avoid applying "Verify the account session, API key, provider settings, and environment where the failing tool is running." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging GCP IAM auth fails with Redis Cluster — sync path uses redis_connect_func which RedisCluster bootstrap ignores?

For "GCP IAM auth fails with Redis Cluster — LiteLLM sync path uses redis_connect_func which RedisCluster bootstrap ignores", collect the failing LiteLLM command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.