This prevents large (multi-day, etc) queries from causing out of memory issues in a single querier and helps to execute them faster. account_name: xxxxxx Loki Grafana Loki Loki3 PrometheusCortex Grafana Loki Loki Grafana Loki minReplicas: 2 level=info ts=2020-04-25T06:55:50.904706722Z caller=table_manager.go:444 msg="creating table" table=index_2589 object_store: azure In Graylog I dont have this delay. flush.go:221 org_id=fake msg="failed to flush user" #5531 - GitHub level=debug ts=2020-09-28T09:37:14.820845198Z caller=logging.go:57 traceID=324a3b9840cd2c34 msg="POST /loki/api/v1/push (204) 16.781645ms" level=debug ts=2020-09-28T09:37:13.710374918Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=168.628s msg="gRPC (success)" Query frontends are stateless. Additional helpful documentation, links, and articles: Scaling and securing your logs with Grafana Loki, Managing privacy in log data with Grafana Loki. The ingester validates that log lines are received in time than the log before it. You signed in with another tab or window. I add 2 nodes to the cluster, they all show `ACTIVE` looking at `/ring`. The querier service handles queries using the LogQL query shared_store: azure both write and read requests for tokens it owns. However, if the ingester pod is not cleanly shutdown (eg. Please if you could suggest then please ask them to document the memberlist feature for loki, in a better way. Namespace: fresh-loki Name of the deployment: loki-mani- Name of the headless service: loki-mani-headless Downloads. larger than 1, the next subsequent tokens (clockwise in the ring) that belong to If an ingester process crashes or exits abruptly, all the data that has not yet By buffering logs in memory before flushing them, Loki de-amplifies writes to our object storage, gaining both performance and cost reduction benefits. When an level=debug ts=2020-09-28T09:37:11.563209359Z caller=grpc_logging.go:41 duration=112.679s method=/logproto.Pusher/Push msg="gRPC (success)" And I was wrong. Unhealthy nodes should leave the ring at some configurable point. @cyriltovena are the logs buffered on the driver level when loki server is unreachable? level=warn ts=2020-04-25T06:56:37.806248557Z caller=pool.go:182 msg="removing ingester failing healthcheck" addr=127.0.0.1:9095 reason="rpc error: code = DeadlineExceeded desc = context deadline exceeded" sent to any distributor. My problem is that the ingester is using about 140 GB of RAM per day, and the memory consumption keeps increasing. level=debug ts=2020-09-28T09:37:12.709249993Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=95.166s msg="gRPC (success)" httpGet: I have deployed loki in a distributed mode using helm chart. Pro tip: When using the WAL, we suggest giving it an isolated disk if possible. In this post, were going to talk about tips for securing the reliability of Lokis write path (where Loki ingests logs). When not configured to accept out-of-order writes, the ingester validates that ingested log lines are in order. We read every piece of feedback, and take your input very seriously. works in single-process mode as queriers need access to the same As far as I can tell I had only that three ACTIVE ingester pods running, nothing more. It's working but not flushing logs to s3. **Screenshots, Promtail config, or terminal output** level=debug ts=2020-09-28T09:27:57.056772097Z caller=logging.go:57 traceID=ff066e25f9f1c12 msg="GET /ready (200) 56.661s" (*Ingester).starting privacy statement. Open source Troubleshooting This document describes known failure modes of Promtail on edge cases and the adopted trade-offs. It also uses the ring to figure out which replication_factor ingesters to forward data to. storageClass: premium-retain The text was updated successfully, but these errors were encountered: it doesn't look like the ruler ring is configured correctly. Replication allows for ingester restarts and rollouts without failing writes and adds additional protection from data loss for some scenarios. description: "SSSD certificate on appliance_id - {{ $labels.appliance_id }} which is used to authenticate to the ldap server is or going to expired." Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. They act like the bouncer at the front door, ensuring everyone is appropriately dressed and has an invitation. level=warn ts=2020-09-28T09:27:57.628852319Z caller=logging.go:62 traceID=1aa79b76cf9cad05 msg="POST /loki/api/v1/push (500) 1.297254ms Response: "at least 2 live replicas required, could only find 1\n" ws: false; Content-Length: 13824; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; " Name of the headless service: loki-mani-headless. Once the distributor has performed all of its validation duties, it forwards data to the ingester component which is ultimately responsible for acknowledging the write. About 5 million chunks (see screenshot below) The number of loki_log_messages_total is 235 million per day. The current chunk has reached capacity (a configurable value). Thank you for your contributions. level=debug ts=2020-09-28T09:32:13.378252883Z caller=logging.go:57 traceID=6ea4e0bcf381a6bc msg="POST /loki/api/v1/push (204) 123.930539ms" docker logs works too. (As well as updating anything using loki-loki-simple-scalable-* to just be loki-*. Using Loki 2.1.0 level=debug ts=2020-09-28T09:32:11.592338823Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=184.129s msg="gRPC (success)" hosts: Sign up for a free GitHub account to open an issue and contact its maintainers and the community. ts=2020-09-28T09:37:18.23619342Z caller=memberlist_logger.go:74 level=warn msg="Refuting a suspect message (from: loki-1)" interval. The plugin is disabled when there are no containers using it. $> kubectl logs --follow pod/loki-0 level=debug ts=2020-09-28T09:33:11.282230396Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=466.522s msg="gRPC (success)" cache_ttl: 24h account_key: xxx-xxxx-xxxx-xxxx-xxxx-xxxx Storing Grafana Loki log data in a Google Cloud Storage bucket Since going to 1.4.3 I get either: 502: bad gateway or Loki: Internal Server Error. So, Dry running Promtail can be configured to print log stream entries instead of sending them to Loki. You switched accounts on another tab or window. on its tenant, labels, and contents. All of these lines are repeated several times. Saved searches Use saved searches to filter your results more quickly 500. too many unhealthy instances in the ring if I Test the datasource in Grafana. ingester distributor query-frontend query-scheduler querier index-gateway ruler compactor level=warn ts=2020-04-25T06:56:39.489737491Z caller=logging.go:49 traceID=1e84516838bcc25a msg="POST /loki/api/v1/push (500) 2.754052713s Response: "rpc error: code = Canceled desc = grpc: the client connection is closing\n" ws: false; Content-Length: 3288; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; " for: 2m - loki-staging.xxxx.xxxx.com And I found that Cortex has provided a api called /shutdown, is this the api to shutdown the ingester gracefully? We read every piece of feedback, and take your input very seriously. level=debug ts=2020-09-28T09:37:12.174331983Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=173.975s msg="gRPC (success)" The ability to independently scale these validation operations mean that Loki can also protect itself against denial of service attacks (either malicious or not) that could otherwise overload the ingesters. privacy statement. Write a short description about your experience with Grot, our AI Beta. The query frontend is an optional service providing the queriers API endpoints and can be used to accelerate the read path. Loki memcached chunks Out of memory errors - Grafana Loki prefix: index_ level=debug ts=2020-09-28T09:32:11.303074574Z caller=flush.go:195 msg="flushing stream" userid=fake fp=5607d0e47e38d2c8 immediate=false If an ingester dies for some reason, it will replay this log upon startup, safely ensuring all the data it previously had in memory has been recovered. level=debug ts=2020-09-28T09:37:12.890943737Z caller=logging.go:57 traceID=6351cbc75e71062d msg="POST /loki/api/v1/push (204) 7.130544ms" level=debug ts=2020-09-28T09:37:14.008935343Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=110.501s msg="gRPC (success)" Remove Loki Locker Ransomware (+ .Loki File Decryption) - HowToRemove.Guide PENDING is an Ingesters state when it is waiting for a handoff from More succinctly, how can Loki ensure we dont lose logs? namespace: loki minReplicas: 2 JOINING is an Ingesters state when it is currently inserting its tokens gateway: level=debug ts=2020-09-28T09:32:13.86325716Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=166.162s msg="gRPC (success)" This includes things like checking that the labels are valid Prometheus labels as well as ensuring the timestamps arent too old or too new or the log lines arent too long. ts=2020-09-28T09:33:10.819263667Z caller=memberlist_logger.go:74 level=debug msg="Failed ping: loki-1 (timeout reached)" hosts: Sorry, an error occurred. level=warn ts=2020-09-28T09:28:00.674505547Z caller=logging.go:62 traceID=1d58f41b070c8b59 msg="POST /loki/api/v1/push (500) 492.018s Response: "at least 2 live replicas required, could only find 1\n" ws: false; Content-Length: 7615; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; ", level=debug ts=2020-09-28T09:32:10.272462716Z caller=logging.go:57 traceID=7421aa397526f7c3 msg="POST /loki/api/v1/push (204) 10.622995ms" Its the first stop in the write path for log data. I had Loki deployed using the loki-simple-scalable 0.4.0 Helm Chart, and it was working with Grafana just fine. level=debug ts=2020-09-28T09:33:11.300760843Z caller=flush.go:195 msg="flushing stream" userid=fake fp=980bd8763fd64572 immediate=false By clicking Sign up for GitHub, you agree to our terms of service and May you double check it, please? level=debug ts=2020-09-28T09:33:11.300727335Z caller=flush.go:195 msg="flushing stream" userid=fake fp=6ef79bf2de1d6df1 immediate=false persistence: I have not found the reason, but I noticed that it is the second docker plugin disable loki after docker restart is failing. Follow answered Aug 9, 2021 at 14:44. level=debug ts=2020-09-28T09:37:16.381107694Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=116.985s msg="gRPC (success)" 1. level=debug ts=2020-09-28T09:32:10.826077237Z caller=logging.go:57 traceID=e9b6f90d555537d msg="POST /loki/api/v1/push (204) 18.354193ms" If an ingester process crashes or exits abruptly, all the data that has not yet Getting back to your issue, I've the feeling that when the pod is evicted the SIGTERM is not sent to the Cortex process and no clean shutdown happens. I didn't have a look in the cortex internals yet, but you'd confirm that the only way an instance resurrect from a forget click is itself readding it to the ring? # See https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blobs-introduction#containers I am facing some issues. Now, lets look at a few less essential, but nice to have, configs: The second technique well talk about is the Write Ahead Log (WAL). Any help is appreciated. As the graph shows, we used four ingesters. It should contain something like this: memberlist: abort_if_cluster_join_fails: false join_members: - tempo-tempo-distributed-gossip-ring This tells the Tempo components to find other components using the gossip-ring service. Distributor Warning: removing ingester failing healthcheck #3028 - GitHub Cluster is down while it should not. /api/v1/ingester/forget) for customers to "Forget" an ingester. Steps to reproduce the behavior: The text was updated successfully, but these errors were encountered: this was an oversight that the schema config had filesystem so it needed to be. Caching log (filter, regexp) queries are under active development. [ingester_client: <ingester_client>] # The ingester block configures the ingester and how the ingester will register # itself to a key value store. Loki stores multiple copies of logs in the ingester component, based on a configurable replication factor, generally 3. If you pass Promtail the flag -print-config-stderr or -log-config-reverse-order, (or -print-config-stderr=true) Promtail will dump the entire config . The ring is a subcomponent that handles coordinating responsibility between ingesters. level=warn ts=2020-09-28T09:27:57.094302497Z caller=logging.go:62 traceID=7475b27cc62d9525 msg="POST /loki/api/v1/push (500) 754.076s Response: "at least 2 live replicas required, could only find 1\n" ws: false; Content-Length: 2916; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; " Note: By signing up, you agree to be emailed related product-level information. This means that multiple ingesters with the This can be used in combination with piping data to debug or troubleshoot Promtail log parsing. Successfully merging a pull request may close this issue. This means it is possible to level=debug ts=2020-09-28T09:32:10.700175034Z caller=logging.go:57 traceID=3b2f91722b42c8dc msg="POST /loki/api/v1/push (204) 25.584338ms" ! At this point the cluster is down. Caveat: Theres also an edge case where we acknowledge a write if 2 of the three ingesters do which means that in the case where 2 writes succeed, we can only lose one ingester before suffering data loss. To see all available qualifiers, see our documentation. Getting Started with Grafana Loki, Part 1: The Concepts - host: loki-staging.az.altairone.com Here are a few configuration settings in the ingester_config that are important to maintain Lokis uptime and durability guarantees. enabled: true (*Facade).Size(0xc0018e80c0, 0x3c2c640) level=error ts=2020-04-25T06:57:08.897851371Z caller=lifecycler.go:730 msg="failed to transfer chunks to another instance" ring=ingester err="terminated after 1 retries" level=debug ts=2020-09-28T09:32:13.610580053Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=192.836s msg="gRPC (success)" Have a question about this project? Configuration | Grafana Loki documentation level=debug ts=2020-09-28T09:37:15.200947938Z caller=logging.go:57 traceID=741687ed48c1846c msg="POST /loki/api/v1/push (204) 17.403541ms" Powered by Discourse, best viewed with JavaScript enabled, Using Loki 2.1.0 size: 500Gi When not configured to accept out-of-order writes, Nothing change in the docker driver between now and the version you're showing: grafana:de644b52c3389833b94435eaef548dfc3d2c38d7master. It does this by checking a per tenant limit and dividing it by the current number of distributors. lookup, distributors only use tokens for ingesters who are in the appropriate level=info ts=2020-04-25T06:55:50.904830138Z caller=table_manager.go:444 msg="creating table" table=index_2562 quorum consistency on reads and writes. level=debug ts=2020-09-28T09:33:10.390257674Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=328.848s msg="gRPC (success)" Step 1: Remove Loki Locker ransomware through "Safe Mode with Networking". ts=2020-09-28T09:37:15.810584014Z caller=memberlist_logger.go:74 level=debug msg="Failed ping: loki-1 (timeout reached)" Loki is usually configured with a Write Ahead Log which can be replayed on restart as well as with a replication_factor (usually 3) of each log to mitigate this risk. level=debug ts=2020-09-28T09:37:18.409607954Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=140.258s msg="gRPC (success)" lokiingester - I want to understand if this is normal . storage backends (DynamoDB, S3, Cassandra, etc.) Since doing that, I am now getting the 500 - too many unhealthy instances message. Well occasionally send you account related emails. level=debug ts=2020-09-28T09:32:11.303129297Z caller=flush.go:195 msg="flushing stream" userid=fake fp=980bd8763fd64572 immediate=false The ingester component now includes a write ahead log which persists incoming writes to disk to ensure theyre not lost as long as the disk isnt corrupted. container_name: staging **To Reproduce** maxReplicas: 10 'docker plugin disable loki' are broken when there are no running The number of promtail clients is ~1000 hosts. This is painful, because it prevents me from moving with loki to production. persistence: tls: level=info ts=2020-09-28T11:15:57.16853102Z caller=metrics.go:81 org_id=fake traceID=2a11c5e2c80a72d4 latency=fast query="{namespace="metalb-sow2"}" query_type=limited range_type=range length=6m0s step=1s duration=11.222396ms status=200 throughput_mb=40.953643 total_bytes_mb=0.459598. Hi @pracucci what about if I click "forget" and 1-2 seconds later the ingesters are there again? Configuration. I am not getting any error logs on loki-ingester container but still ingester container terminating and shutting down. This means that generally, we could lose up to 2 ingesters without seeing data loss. At this point the cluster is down. Read or writes fail with something like: The query frontend supports caching metric query results and reuses them on subsequent queries. The essential config settings you should use so you won't drop logs in Loki You switched accounts on another tab or window. When the disk is full, the ingester can still write to the storage (e.g., S3), but will not log them into the local . However, this still leaves much to be desired in persistence guarantees, especially for single binary deployments. level=debug ts=2020-09-28T09:32:11.301473928Z caller=flush.go:195 msg="flushing stream" userid=fake fp=0873f79be9cf8a8d immediate=false Hello. - Deployment tool: Terraform Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? By default, when an ingester is shutting down and tries to leave the hash ring, If the replication factor is 3, then 2 writes must not fail (floor(replication_factor / 2) + 1). distributor receives a set of streams, each stream is validated for correctness To Reproduce . level=debug ts=2020-09-28T09:37:17.350664218Z caller=logging.go:57 traceID=1674b6e3fba5fd01 msg="POST /loki/api/v1/push (204) 16.950292ms" level=debug ts=2020-09-28T09:33:11.299482414Z caller=flush.go:195 msg="flushing stream" userid=fake fp=62c7fc2767f198b5 immediate=false But the ingester component is not getting started as the Readiness probe fails everytime. storageClass: premium-retain We read every piece of feedback, and take your input very seriously. consistent hashing; all ingesters register themselves into the hash ingester. /src/loki/pkg/ingester/ingester.go:168 +0x68. Grafana Loki creates a chunk file per each log stream per each 2 hours - see this article and this post at HackerNews.This means that the number of files is proportional to the number of log streams and to the data retention. EDIT: actually it is working, I will watch this and give another feedback then. level=debug ts=2020-09-28T09:33:10.429518403Z caller=logging.go:57 traceID=7ff961b7074167ed msg="POST /loki/api/v1/push (204) 59.498718ms" We read every piece of feedback, and take your input very seriously. ACTIVE, LEAVING, or UNHEALTHY: Deprecated: the WAL (write ahead log) supersedes this feature. Sign in Attaching the logs after enabling the global debug level, oc logs loki-0 | grep error -A 10 -B 10 ts=2020-09-28T09:37:16.297735584Z caller=memberlist_logger.go:74 level=error msg="Failed fallback ping: read tcp 10.131.0.19:51096->10.128.2.94:7946: i/o timeout" And still can not disable loki plugin. (*Ingester).flushChunks(0xc00013ae00, 0x3c2c600, 0xc0018f2120, 0x989d0aca61fcc7e3, 0xc0001e7440, 0x9, 0x9, 0xc0000d20c0, 0x1, 0x1, ) But the ingester component is not getting started as the Readiness probe fails everytime. It will be closed in 7 days if no further activity occurs. level=info ts=2020-04-25T06:55:50.90490025Z caller=table_manager.go:444 msg="creating table" table=index_2579 to your account, Describe the bug This makes it easy to scale and offload as much work as possible from the ingesters, which are the most critical component on the write path. level=debug ts=2020-09-28T09:32:12.016548093Z caller=logging.go:57 traceID=1f09973e757e7f95 msg="POST /loki/api/v1/push (204) 68.850427ms" Components | Grafana Loki documentation This is how global limits allow much simpler and safer operation of the Loki cluster. Sign in the sample to before responding to the client that initiated the send. 500. too many unhealthy instances in the ring from Grafana. The result cache is compatible with any loki caching backend (currently memcached, redis, and an in-memory cache). Write-Ahead Logs | Grafana Loki documentation This usually happens when the Loki ingester flush operations queue grows too large, therefore the Loki Ingester requires more time to flush all the data in memory. There are, ts=2020-09-28T09:33:11.297312069Z caller=memberlist_logger.go:74 level=info msg="Suspect loki-1 has failed, no acks received" Verify that IP Address is correct, and try to find out why i/o timeout happens. persistence: This allows administrators to under-provision memory for queries, or optimistically run more small queries in parallel, which helps to reduce the TCO. been flushed could be lost. STEP 2: Use Malwarebytes Free to remove the Loki Locker ransomware. What is strange in my case: Grafana first is able to connect loki, but after some time it is not able anymore. Once inside, press CTRL and F together and type the virus's Name. STEP 4: Double-check for malware infections with ESET Online Scanner. Sign in maxReplicas: 10 Before joining the hash ring, ingesters will wait in PENDING state for a level=info ts=2020-09-28T11:15:06.239386601Z caller=metrics.go:81 org_id=fake traceID=3f33b4abb3808adb latency=fast query="{namespace="metalb-sow2"}" query_type=limited range_type=range length=6m0s step=1s duration=275.422756ms status=200 throughput_mb=3.3374 total_bytes_mb=0.919196 A stream is a set of logs associated to a tenant and a unique labelset. Attaching the snippet of the configuration below, where I configured the memberlist transport parameter: Will share the logs post configuring the Global log level to debug. level=debug ts=2020-09-28T09:32:12.790770295Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=118.465s msg="gRPC (success)" enabled: true schema_config: Error "failed to transfer chunks to another instance" #1983 - GitHub Grafana Loki HTTP API | Grafana Loki documentation I have provided the terminal output for some commands. Loki ingester Readiness probe is giving 503 #5759 - GitHub A quorum is defined as floor(replication_factor / 2) + 1. level=debug ts=2020-09-28T09:37:16.9266723Z caller=logging.go:57 traceID=18b62911389ecdcb msg="POST /loki/api/v1/push (204) 50.186825ms" enabled: true You can check the metric loki_ingester_wal_corruptions_total for such an event. While ingesters do support writing to the filesystem through BoltDB, this only level=debug ts=2020-09-28T09:37:16.103669732Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=122.449s msg="gRPC (success)" clients. I can't pass it as a CLI argument, since I am using Monolithic Loki as a statefulSet in Openshift Platform. Describe the bug Loki can be scaled horizontally to reduce this pressure. replicas: 1 Just tried. level=debug ts=2020-09-28T09:32:12.534091039Z caller=logging.go:57 traceID=2d569ff496064e8a msg="POST /loki/api/v1/push (204) 10.770643ms" They never leave this state (could not find a relevant config option). to your account. level=debug ts=2020-09-28T09:32:11.301589516Z caller=flush.go:195 msg="flushing stream" userid=fake fp=23fee32bcf58ae1d immediate=false level=debug ts=2020-09-28T09:32:11.998840551Z caller=grpc_logging.go:41 method=/logproto.Pusher/Push duration=228.85s msg="gRPC (success)" We read every piece of feedback, and take your input very seriously. enabled: true used to find the ingesters to send the stream to. Sign in created by github.com/grafana/loki/pkg/ingester. level=debug ts=2020-09-28T09:37:16.451286188Z caller=logging.go:57 traceID=656cc40658f12827 msg="POST /loki/api/v1/push (204) 43.449333ms" The instance remains on the list with the unhealthy status. To see all available qualifiers, see our documentation. To Reproduce I wonder if confusion may be caused by names mismatch (eg. I am not using the loki-gateway, but I am connecting directly the service loki-read from grafana.
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