I want to see the logs from my Docker Swarm service. Docker 1.13 includes an experimental feature for getting a Docker service log using the docker service logs command. runc: Why would space traders pick up and offload their goods from an orbiting platform rather than direct to the planet? Hey! View all OReilly videos, Superstream events, and Meet the Expert sessions on your home TV. Also the experimental feature to get service logs is a command-line feature and required to be run per service. 469). Happens maybe 50% of the time I try. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This is not a one-off, I have seen it on numerous services. Announcing the Stacks Editor Beta release! Some logs are shown on the terminal but it never finishes https://doi.org/10.1007/978-1-4842-2973-6_11. Math Proofs - why are they important and how are they useful? privacy statement. I have not yet attempted to reproduce without log rotation. Docker also provides the docker logs command to get the logs for a container. How do I politely refuse/cut-off a person who needs me only when they want something? Find centralized, trusted content and collaborate around the technologies you use most. newsnowlabs/docker-ingress-routing-daemon#23. Engine: The stack has about 20 services. All logs shown and it does not hang. Asking for help, clarification, or responding to other answers. Chi squared test with reasonable sample size results in R warning, Make a tiny island robust to ecologic collapse. Drivetrain 1x12 or 2x10 for my MTB use case? I think the issue is that wait time is calculated at 1 token per rate (1 second). Service I am trying has 2 replicas. OS/Arch: linux/amd64 Successfully merging a pull request may close this issue. Let me know if there is further debug information I can collect, Describe the results you expected: By clicking Sign up for GitHub, you agree to our terms of service and What would happen if qualified immunity is ended across the United States? We use logstash/kibana with the gelf driver and we have this configured on the docker daemon so any docker host in our clusters log to kibana. Not only because I want all my logs to be collected for the usual reason, but also because I want to work out why the service is crashing with "task: non-zero exit (1)". Otherwise, a good practice is to do what @Dockstar recommends and configure a log driver. Obviously this is not related to the original issue (which seems to be a separate bug) but I thought sharing this here might help some people avoid misdiagnosing their issue. docker swarm how to find out why service can't start, Is there a way we can get docker service logs in older docker version 1.12.2, How to collect logs via fluentd in swarm mode. Well occasionally send you account related emails. Perhaps this is a misuse of the limiter? How to collect Docker Swarm logs to separate files, each log file for service? When I redeployed my services with sensible log rotation (5 x 10M in my case) my problem went away. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Experimental: false The only daemon log entry of note is this one, which appears on the worker node where the container whose logs are being fetched is located, upon interrupting the hanging docker service logs command: All our services have log rotation configured, with max-file: 10 and max-size: 10m. Docker includes several built-in logging drivers for containers, such as json-file, syslog, journald, gelf, fluentd, and awslogs. Is there anything a dual bevel mitre saw can do that a table saw can not? https://forums.docker.com/t/docker-service-logs-seems-to-hang-after-printing-large-output-in-a-short-time/48436, Unresponsive UI after closing settings for app, Fix rate limiting for logger, increase refill rate, [19.03] Fix rate limiting for logger, increase refill rate, manager-goroutine-stacks-2020-05-30T002816Z.log, worker-goroutine-stacks-2020-05-30T005328Z.log, 'docker service logs' hangs for some services on single-node swarm after 3+ days, Feature Request/Question: Running this in Docker, Create a template stack (3 managers + 2 workers), Wait until all containers are up and running. I have thought I had this problem a couple of times but it actually turned out that (in my estimation, at least) the log files had just become so large that something like this would hang indefinitely: I presume because Docker is searching through gigabytes of spooled logs to find the correct timestamp ? It's super easy to reproduce. // of time it takes to accumulate them at a rate of limit tokens per second. This is pretty critical for apps that use Docker API. DeepakVohra, Docker Management Design Patterns, https://doi.org/10.1007/978-1-4842-2973-6_11. Docker Swarm mode does not include a native monitoring service for Docker services and containers. Should I tell my boss that I am doing a crazy amount of overtime? The text was updated successfully, but these errors were encountered: Anyone can tell me what logs to collect to investigate this issue? out of memory) or docker itself is having issues. It won't let you add the "Tag" option, which is exceptionally useful for filtering down your results. I saw that, but I also saw the ticket for a future release that says "implement logging in swarm", and I'm still not sure how reliable the documentation is. Could be the same problem as #36312 (long log lines and/or incorrect chucking). And repro steps are pretty solid. Terms of service Privacy policy Editorial independence. A logging service Get Docker Management Design Patterns: Swarm Mode on Amazon Web Services now with the OReilly learning platform. I am only seeing one of them hang. Announcing Design Accessibility Updates on SO, How to get a Docker container's IP address from the host, Marathon vs Kubernetes vs Docker Swarm on DC/OS with Docker containers. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It falls back to sorting by highest score if no posts are trending. Take OReilly with you and learn anywhere, anytime on your phone and tablet. GitCommit: fec3683. Version: 1.0.0-rc8+dev I am seeing this issue as well. Making statements based on opinion; back them up with references or personal experience. (takes a minute), Destroy a manager node and a worker node by hard deleting them. Wether it's writing to terminal or "> /dev/null" or "| gzip" or "| more" makes no difference. Thanks for contributing an answer to Stack Overflow! GitCommit: b34a5c8af56e510852c35414db4c1f4fa6172339 Or is Docker Swarm not ready for production wrt logging? Tickets in question: Is there any way to get logs in Docker Swarm? I can confirm this works in swarm as we are collecting these logs across swarm instances. Is the US allowed to execute a airstrike on Afghan soil after withdrawal? Version: 19.03.10 You can get the name of the service with: Note that this is an experimental feature (not production ready) and in order to use it you must enable the experimental mode: Update: docker service logs is now a standard feature of docker >= 17.06. https://docs.docker.com/engine/reference/commandline/service_logs/#parent-command, similar question: How to log container in docker swarm mode. Git commit: 9424aeaee9 ): It would be super cool to see similar behavior to docker-compose in that regard. Server: Docker Engine - Community I deleted one of the stopped containers for this service, it seems to have made it occur less frequently but I can't say for sure. issue happens only occasionally): Additional environment details (AWS, VirtualBox, physical, etc. I can produce the hang when running "docker service logs" without any flags every time the amount of logs is large enough. And sorry, can you confirm that this works with Swarm? rev2022.8.2.42721. OReilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers. Thanks Interesting thing is if I add --tail its pretty consistently will hang greater than a certain number of lines (in my case 55285 although this fluctuates slightly). What is the rounding rule when the last digit is 5 in .NET? I'm still experiencing hangs on 19.03.9 and 19.03.10, at what appear to be semi-arbitrary byte counts and log line counts: I say "semi-arbitrary" because there's clearly some commonality--always mid-thousands of lines, always mid-hundreds of KB of text. If you look at docker run documentation, you can specify a log-driver and log-options that allow you to send all console messages to a graylog cluster. With Docker Swarm 17.03 you can now access the logs of a multi instance service via command line. I think they currently should have the beta out. You can also technically configure it at the global level for the docker daemon, but I would advise against that. to your account, Steps to reproduce the issue: Log configurations from Docker are at, Here's the details for swarm service creation. Mimimizing a monomial function subject to inequality constraints. containerd: It's hard to pick out the relevant bits of the documentation, very useful to have a steer! Should I cook mushrooms on low or high heat in order to get the most flavour? Already on GitHub? Built: Thu May 28 22:15:20 2020 How does JWST position itself to see and resolve an exact target? And if possible point to any documentation about using log drivers in Swarm? What does the Ariane 5 rocket use to turn? manager-goroutine-stacks-2020-05-30T002816Z.log Describe the results you received: Get Mark Richardss Software Architecture Patterns ebook to better understand how to design componentsand how they should interact. docker-init: Unfortunately this seems to still be a problem, though the cause may be different than the rate limiter? More like San Francis-go (Ep. I can even reproduce it on Play With Docker stack: I tried this 2 times from scratch. You signed in with another tab or window. Using "--tail" with a small enough number works, but obviously doesn't output all the logs. docker service logs service-name. What is "Rosencrantz and Guildenstern" in _The Marvelous Mrs. Maisel_ season 3 episode 5? 2022, OReilly Media, Inc. All trademarks and registered trademarks appearing on oreilly.com are the property of their respective owners. Industry job right after PhD: will it affect my chances for a postdoc in the future? worker-goroutine-stacks-2020-05-30T005328Z.log.
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docker service logs swarm