AI for Loki
Query, scale, and debug Grafana Loki log pipelines with AI — LogQL, ingesters and queriers, chunk storage, label cardinality, retention, and multi-tenancy.
21 copy-paste prompts · 50 in-depth guides Jump to prompts Jump to guides
Prompts
- Advanced
Build a Per-Tenant Loki Cost Attribution and Chargeback Model
Turn Loki's ingest, storage, and query metrics into a defensible per-tenant cost model — attributing object-storage bytes, ingest volume, and query load back to teams so you can produce showback/chargeback reports and drive down the biggest spenders.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Tune Loki Ingester WAL and Replay for Safe Crash Recovery
Configure and validate the Loki ingester write-ahead log, flush-on-shutdown behaviour, and replay memory ceiling so an ingester crash or rollout replays cleanly without losing recent logs, OOMing on startup, or stalling the write path.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Tune Loki's Query Frontend, Scheduler, and Query Sharding
Design the Loki read-path parallelism stack — query splitting, TSDB query sharding, the query-scheduler queue, and per-tenant outstanding-request limits — so large queries fan out cleanly instead of stalling, timing out, or overflowing the queue.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Tune Loki Chunk Sizing and Object Storage Layout
Optimize Loki chunk targets, compression, and object-storage configuration to balance query speed, storage cost, and request rate against S3/GCS/Azure limits.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Design a Disaster Recovery Plan for Loki
Build a DR strategy for Loki covering object-storage durability and cross-region replication, ingester WAL recovery, ring/state reconstruction, and per-tenant RPO/RTO with a tested restore runbook.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Scale Loki Ingesters and Queriers Under Load
Right-size and scale Loki's write path (distributors/ingesters) and read path (query-frontend/queriers) to eliminate rate-limit rejections and query timeouts without over-provisioning.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Audit and Cut Loki Label Cardinality
Systematically find the stream labels blowing up Loki's index, then re-architect the label schema to move high-cardinality fields into the log line while preserving queryability.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Design Log-Based Alerting with Loki Ruler
Build reliable metric-from-logs alerts using LogQL range aggregations and the Loki ruler, avoiding flaky, high-cardinality, or cost-blowout alert rules.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Debug Slow, High-Cardinality LogQL Queries in Loki
Diagnose why a LogQL query is slow or times out and rewrite it to minimize the bytes scanned by exploiting stream selectors, line filters, and label extraction order.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Optimize Slow LogQL Queries for Speed and Cost
Take a slow or timing-out LogQL query and rewrite it so the label matchers, line filters, parsers, and aggregation order let Loki prune chunks early and shard the work across queriers.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Meta-Monitor Loki with Golden-Signal SLOs
Instrument Loki to monitor itself — write/read path availability and latency, ingester and queue saturation, object-store errors — and codify SLOs with burn-rate alerts so you know Loki is healthy before users complain.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Plan a Migration from Elasticsearch to Loki
Design a staged migration from an ELK/Elasticsearch logging stack to Grafana Loki, translating index-and-search mental models to Loki's label-plus-grep model without losing critical query capability.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Design Loki Multi-Tenant Per-Tenant Limits
Design X-Scope-OrgID tenant boundaries and per-tenant limits/overrides so one noisy team cannot starve ingest or degrade query performance for everyone else.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Build an OpenTelemetry Logs Pipeline into Loki
Design an OTel Collector logs pipeline that ships into Loki's native OTLP endpoint, mapping OTel resource/scope attributes to a low-cardinality label set and keeping the rest as structured metadata.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Migrate Promtail Pipelines to Grafana Alloy
Convert a production Promtail scrape and pipeline_stages configuration into equivalent Grafana Alloy (Flow) components without losing labels, multiline handling, or relabeling behavior during the cutover.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Design Loki's Query Caching Strategy with Memcached
Architect the full Loki caching stack — results cache, chunks cache, index/index-stats cache, and write-dedupe cache — sizing memcached correctly so repeated dashboard queries and range splits hit cache instead of object storage.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Map and Debug the Loki Read and Write Path
Trace a log line end-to-end through Loki's write path (distributor → ingester → object storage) and read path (query-frontend → querier → ingester/store) to localize where ingestion loss or query gaps occur.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Design Loki Ruler Recording and Alerting Rules
Stand up the Loki ruler to precompute expensive log-metric queries into recording rules and fire alerts on log-derived signals, with correct WAL, remote-write, and per-tenant rule storage.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Tune Loki Retention and the Compactor
Design per-tenant and per-stream retention with Loki's compactor, and tune compaction so deletes actually execute without falling behind or bloating the index.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Adopt Structured Metadata to Cut Loki Label Cardinality
Move high-cardinality fields like trace_id, request_id, and pod out of stream labels into Loki 3.x structured metadata, so they stay queryable without multiplying streams or index size.
- Claude
- ChatGPT
- Cursor
Open prompt - Advanced
Migrate Loki from boltdb-shipper to the TSDB Index
Plan and execute the schema migration from the legacy boltdb-shipper index to the TSDB index using a future-dated schema_config period, so existing chunks stay queryable while new data lands on TSDB.
- Claude
- ChatGPT
- Cursor
Open prompt
Guides
- · 8 min read
Loki Error Guide: 'bind: address already in use' — Free the Port or Change the Listener
Fix Loki 'listen tcp :3100: bind: address already in use': free the port, change http_listen_port or grpc_listen_port, and avoid collisions.
Read guide - · 8 min read
Loki Error Guide: 'at least 1 live replicas required, could only find 0' — Restore Ingester Write Quorum
Fix Loki 'at least 1 live replicas required, could only find 0': restore healthy ingesters, forget dead ring entries, and open gRPC 9095.
Read guide - · 8 min read
Loki Error Guide: '502 Bad Gateway' — Recover the Gateway-to-Loki Upstream
Fix Loki '502 Bad Gateway': restore crashed upstream pods, correct the gateway proxy_pass, and raise proxy buffers and timeouts.
Read guide - · 8 min read
Loki Error Guide: 'chunk not found' — Reconcile the Index with What Actually Lives in Object Storage
Fix Loki's 'chunk not found': the index references a chunk that is missing from object storage. Align buckets, stop rogue retention, and clear stale caches.
Read guide - · 8 min read
Loki Error Guide: 'failed to compact files' — Get the Compactor Running and Retention Working
Fix Loki's compactor 'failed to compact files' / 'failed to run compaction': run exactly one compactor, grant s3 delete for retention, and match the schema.
Read guide - · 8 min read
Loki Error Guide: 'NoCredentialProviders: no valid providers in chain' — Give Loki Working Object-Store Credentials
Fix Loki 'NoCredentialProviders: no valid providers in chain' CredentialsError: bind IRSA/Workload Identity or set access_key_id to authenticate.
Read guide - · 8 min read
Loki Error Guide: 'timestamp too new' — Fix Clock Skew Before the Distributor Rejects Future-Dated Logs
Fix Loki's 'entry for stream has timestamp too new': correct sender clocks and timestamp parsing, then tune creation_grace_period for legitimate future skew.
Read guide - · 8 min read
Loki Error Guide: 'failed parsing config' — Fix YAML, Renamed Fields, and Env Expansion
Fix Loki 'failed parsing config: field not found in type': catch YAML typos, renamed fields, and env vars, then run -verify-config.
Read guide - · 8 min read
Loki Error Guide: 'flag provided but not defined' — Fix Renamed and Removed CLI Flags
Fix Loki 'flag provided but not defined': list valid flags with loki -help, move the setting into config, and align the image version.
Read guide - · 8 min read
Loki Error Guide: 'http: server gave HTTP response to HTTPS client' — Match the URL Scheme to the Endpoint
Fix Loki 'http: server gave HTTP response to HTTPS client': a scheme mismatch where https:// hits a plain-HTTP endpoint. Align it or enable TLS.
Read guide - · 8 min read
Loki Error Guide: 'invalid magic number' — Find and Remove the Corrupt Chunk or Index File
Fix Loki 'invalid magic number': a truncated or corrupt chunk or boltdb/TSDB index file. Remove the bad object and re-download clean.
Read guide - · 8 min read
Loki Error Guide: 'invalid schema config' — Set 24h Index Periods and Add New Schemas Safely
Fix Loki 'invalid schema config: boltdb-shipper works best with 24h periodic index config': set index period to 24h and align store/schema v13.
Read guide - · 8 min read
Loki Error Guide: 'invalid tenant ID' — Sanitize the X-Scope-OrgID Value
Fix Loki 'invalid tenant ID': tenant names with path separators, pipes, or over-length values are rejected. Map to safe tenant slugs.
Read guide - · 8 min read
Loki Error Guide: 'error getting ring ... connection refused' — Fix the KV Store Backend
Fix Loki 'error getting ring ... connect: connection refused': repair the Consul/etcd KV backend, open the port, or switch to memberlist.
Read guide - · 8 min read
Loki Error Guide: 'label value too long' — Keep High-Entropy Strings Out of Your Stream Labels
Fix Loki's 'label value too long': stop putting URLs, UUIDs and messages into labels, move them into the log body, and tune max_label_value_length safely.
Read guide - · 8 min read
Loki Error Guide: 'pipeline error' (__error__="JSONParserErr") — Handle Lines That Don't Match Your Parser
Fix Loki 'pipeline error' with __error__="JSONParserErr" or "LogfmtParserErr": filter failed lines and scope the parser to matching streams.
Read guide - · 8 min read
Loki Error Guide: 'joining memberlist cluster: failed to reach any nodes' — Reconnect the Gossip Cluster
Fix Loki 'joining memberlist cluster: failed to reach any nodes': fix join_members, the headless service, and gossip port 7946.
Read guide - · 8 min read
Loki Error Guide: 'mkdir /loki: permission denied' — Fix Volume Ownership and fsGroup
Fix Loki 'mkdir /loki: permission denied' at startup: set securityContext fsGroup for the non-root uid and use writable WAL/compactor mounts.
Read guide - · 8 min read
Loki Error Guide: 'NoSuchBucket: The specified bucket does not exist' — Point Loki at a Bucket That Exists
Fix Loki's 'NoSuchBucket: The specified bucket does not exist status code: 404': correct bucketnames, region, endpoint, and path-style so flushes land.
Read guide - · 8 min read
Loki Error Guide: 'query too large to execute on a single querier' — Narrow the Scan Before You Raise the Limit
Fix Loki's 'query too large to execute on a single querier: would read too many bytes': add stream selectors, shorten the range, enable sharding, tune limits.
Read guide - · 8 min read
Loki Error Guide: 'RequestTimeTooSkewed status code: 403' — Fix Clock Drift, Not IAM
Fix Loki 'RequestTimeTooSkewed ... status code: 403' storage errors by syncing the node clock with NTP, not by changing IAM.
Read guide - · 8 min read
Loki Error Guide: 'InternalError: We encountered an internal error status code: 500' — Retry, Then Alert on Sustained Failures
Fix Loki's 'InternalError: We encountered an internal error, please try again status code: 500': enable retries/backoff and alert only on sustained failures.
Read guide - · 8 min read
Loki Error Guide: 'SlowDown: Please reduce your request rate status code: 503' — Throttle and Cache the S3 Path
Fix Loki's 'SlowDown: Please reduce your request rate status code: 503': add retries, chunk and index caches, and write fewer, larger chunks to S3.
Read guide - · 8 min read
Loki Error Guide: 'has 25 label names; limit 15' — Cut Label Cardinality Before the Distributor Rejects Your Push
Fix Loki's 'stream has 25 label names; limit 15': drop excess labels in your agent, move dynamic fields into the log line, and tune max_label_names_per_series.
Read guide - · 8 min read
Loki Error Guide: 'too many open files' — Raise the File-Descriptor Limit
Fix Loki 'accept4: too many open files': the OS fd ulimit is too low for open connections and chunk files. Raise LimitNOFILE and ulimits.
Read guide - · 8 min read
Loki Error Guide: 'rpc error: code = Unavailable desc = transport is closing' — Stabilize gRPC Between Components
Fix Loki 'rpc error: code = Unavailable desc = transport is closing': trace pod restarts and OOMKills, and tune gRPC keepalive.
Read guide - · 8 min read
Loki Error Guide: 'failed to replay WAL' — Recover an Ingester From a Corrupt Write-Ahead Log
Fix Loki's 'failed to replay WAL' and WAL corruption on startup: let the ingester truncate the bad tail, enable clean shutdowns, and lean on replication.
Read guide - · 8 min read
Loki Error Guide: 'no space left on device' on the WAL — Stop the Ingester Disk From Filling Up
Fix Loki's WAL 'no space left on device': grow the WAL volume, fix the flush failures that stall segment truncation, and tune ingester.wal before disk fills.
Read guide - · 8 min read
Loki Error Guide: 'x509: certificate signed by unknown authority' — Trust the CA in the Client tls_config
Fix Loki 'x509: certificate signed by unknown authority': add the private CA to the client tls_config ca_file and include intermediates.
Read guide - · 8 min read
Loki Error Guide: 'context canceled' — Trace Client Disconnects and Cancelled Sub-Queries
Fix Loki's 'context canceled': tell client disconnects and proxy resets from internal sub-query cancellation, then fix the real proxy or shard cause.
Read guide - · 8 min read
Loki Error Guide: 'max concurrent tail requests limit exceeded' — Manage Live Tail Connections
Fix Loki's 'max concurrent tail requests limit exceeded': close stale live-tail sessions, raise the cap per tenant, or use bounded range queries.
Read guide - · 8 min read
Loki Error Guide: 'max entries limit per query exceeded' — Cap Results, Aggregate, and Paginate
Fix Loki's 'max entries limit per query exceeded': lower the requested line count, switch to metric queries, or paginate large log pulls.
Read guide - · 9 min read
Loki Error Guide: 'AccessDenied: Access Denied status code: 403' — Fix Object Storage Permissions
Fix Loki S3/GCS 'AccessDenied status code: 403': diagnose IAM policy, bucket name, region, and credential problems that block chunk flushes and index reads, then grant the exact permissions Loki needs.
Read guide - · 9 min read
Loki Error Guide: 'context deadline exceeded' — Fix Query Timeouts on the Read Path
Resolve Loki's 'context deadline exceeded': raise query_timeout and http_server_write_timeout, narrow ranges, add label matchers, and speed slow object-storage reads causing timeouts.
Read guide - · 9 min read
Loki Error Guide: 'empty ring' / 'too many unhealthy instances in the ring' — Recover the Hash Ring
Fix Loki's 'empty ring' and 'too many unhealthy instances in the ring': repair KV store membership, clear stale ingesters, align replication_factor, and restore the read/write path.
Read guide - · 9 min read
Loki Error Guide: 'entry out of order' / 'entry too far behind' — Fix Timestamp Ordering at Ingest
Resolve Loki's 'entry out of order' and 'entry too far behind': fix clock skew, split streams by instance, tune max_chunk_age and reject_old_samples, and stop dropped log lines.
Read guide - · 9 min read
Loki Error Guide: 'failed to flush chunks' — Fix Object Storage Writes and Ingester Backpressure
Resolve Loki's 'failed to flush chunks': fix object-storage credentials and connectivity, relieve ingester backpressure, tune flush queues and chunk age, and stop WAL and memory growth.
Read guide - · 9 min read
Loki Error Guide: 'ResourceExhausted: grpc: received message larger than max' — Raise gRPC Message Size Limits
Fix Loki's 'ResourceExhausted ... message larger than max': raise grpc_server_max_recv_msg_size and client send limits, shrink batches and query fan-out, and stop oversized gRPC frames.
Read guide - · 9 min read
Loki Error Guide: 'Ingestion rate limit exceeded' — Raise or Rebalance the Tenant Rate Limit
Fix Loki 'Ingestion rate limit exceeded' (429) errors: diagnose per-tenant rate vs burst limits, distributor rejections, and bursty senders, then raise limits, shard traffic, or add backpressure.
Read guide - · 8 min read
Loki Error Guide: 'parse error: syntax error: unexpected IDENTIFIER' — Fix Invalid LogQL
Fix Loki LogQL 'parse error: syntax error: unexpected IDENTIFIER': understand stream selectors, filter and pipeline syntax, and how to correct matchers, quoting, and metric-query structure.
Read guide - · 8 min read
Loki Error Guide: 'max line size exceeded' — Truncate, Split, or Raise max_line_size
Fix Loki 'max line size exceeded' rejections: find oversized log lines from stack traces and JSON blobs, then truncate at the source, split lines, or raise max_line_size safely per tenant.
Read guide - · 9 min read
Loki Error Guide: 'Maximum active stream limit exceeded' — Cut Label Cardinality and Raise Stream Limits
Fix Loki's 'Maximum active stream limit exceeded': drop high-cardinality labels, raise max_global_streams_per_user, add ingesters, and stop label explosion from filling active streams.
Read guide - · 8 min read
Loki Error Guide: 'maximum of series reached for a single query' — Reduce Cardinality or Raise the Limit
Fix Loki 'maximum of series reached for a single query': understand max_query_series, why high-cardinality LogQL explodes series, and how to narrow labels, aggregate, or safely raise the limit.
Read guide - · 8 min read
Loki Error Guide: 'no org id' — Supply the X-Scope-OrgID Tenant Header
Fix Loki 'no org id' errors: understand multi-tenancy and the X-Scope-OrgID header, why pushes and queries fail without a tenant, and how to set it in clients, Grafana, and the ruler.
Read guide - · 9 min read
Loki Error Guide: 'Per stream rate limit exceeded' — Raise Stream Limits and Fix Label Cardinality
Fix Loki's 'Per stream rate limit exceeded': tune per_stream_rate_limit and burst, split hot streams with better labels, and stop one chatty stream from dropping logs at ingest.
Read guide - · 8 min read
Loki Error Guide: 'queries require at least one regexp or equality matcher' — Fix Empty Stream Selectors
Fix Loki's 'queries require at least one regexp or equality matcher': add a concrete label matcher to the stream selector, avoid empty-compatible matchers, and write valid LogQL.
Read guide - · 8 min read
Loki Error Guide: 'the query time range exceeds the limit' — Split the Range or Raise max_query_length
Fix Loki 'the query time range exceeds the limit': understand max_query_length and max_query_lookback, why long ranges are rejected, and how to split, shorten, or safely raise the limits.
Read guide - · 8 min read
Loki Error Guide: 'too many chunks to fetch' — Narrow the Query or Raise max_chunks_per_query
Fix Loki 'too many chunks to fetch': understand max_chunks_per_query, why broad matchers and long ranges pull too many chunks, and how to tighten selectors, split ranges, or raise the limit safely.
Read guide - · 9 min read
Loki Error Guide: 'too many outstanding requests' — Raise Querier Concurrency and Split Queries
Fix Loki's 'too many outstanding requests': tune max_outstanding_per_tenant, querier concurrency, query splitting and sharding, and the query-scheduler so heavy queries stop queueing up.
Read guide - · 9 min read
Loki Error Guide: 'too many unhealthy instances in the ring' — Restore Ring Health and Quorum
Fix Loki 'too many unhealthy instances in the ring': diagnose KV store heartbeat failures, unregistered ingesters, and lost quorum, then flush the ring, fix the KV backend, and restore replication.
Read guide