Shulou(Shulou.com)06/02 Report--

This article mainly introduces "what to do when the disk is full due to too many Docker logs". In the daily operation, I believe that many people have doubts about how to fill up the disk caused by too many Docker logs. The editor consulted all kinds of data and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubt that "too many Docker logs cause the disk to fill up." Next, please follow the editor to study!

I have a server that has multiple docker containers deployed on it, and each docker container outputs a steady stream of logs to stderr, causing the disk to be full today. After a search, an article on the solution is available on the official docker website.

The Docker container will write to / var/lib/docker when it starts / restarts. If you encounter problems with No space left on device when starting the docker container, you can follow the steps below to clean up the related logs.

1. Sort the folders under / var/lib/docker/containers to see which container takes up too much disk space.

$du-D1-h / var/lib/docker/containers | sort-h

The above command sorts the container folder in ascending order and lists the size of the container folder:

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[root@dbl14195 testnet] # du-D1-h / var/lib/docker/containers | sort-h

36K / var/lib/docker/containers/4d91f92dd7604216f2e9e123572e9a80d7bbee3d8c8ce7be2ed241c572816fb6

40K / var/lib/docker/containers/374aa0ba92b37d829012282ff15c1bb838d95dedb54589874c4285991be2d4aa

40K / var/lib/docker/containers/7cfdbc453b2f7109b52e974061754266e6cdc0ccaee62ab4a5887865113e1144

40K / var/lib/docker/containers/84ee24989ad52383c6e99eaa4d236e600095aa7f855e81fbafe10416b75ceefb

40K / var/lib/docker/containers/aeced3ef3e23df27e52f65743bb05448b46a2c660acc5b0aab12604e060779b4

40K / var/lib/docker/containers/c36722baf0d2e1c22b7dde9979665ab62cd8ab85c3f1d0f427bb7a34e0fd977a

44K / var/lib/docker/containers/62477b332d18e192d70c7420435d47a379e6bbd8de13da8a8762e0fd95b341ca

44K / var/lib/docker/containers/78da0cf9743b6940fabbbd8c574b99dc5deb642fa998a8f819a6c6978fc875d7

44K / var/lib/docker/containers/9f63daf7caa7c469385bed4b178fbfe662e15b8c569c6644081af090f8e40426

44K / var/lib/docker/containers/e2d1286119a45aac7e58d6dac6e4b44b1d1288799b735943be45abed50244e56

56K / var/lib/docker/containers/ebd1bd211a1b9d02bb39bfb80eec3d0960a5b25e18f54d7371781ec456e7a1e8

176K / var/lib/docker/containers/1fe0a241e5ce9726c547c68739793633f9dd906768a36fe80e8fb80373aa3bfb

17M / var/lib/docker/containers/ac30e68d454b37d22b3964053a2b52ba043baa1add13556a09c0e3e05589104f

25M / var/lib/docker/containers/872ca4e3d005594591ca2df0e832d36eef448981ab2820c69df4ff1399f8423e

25M / var/lib/docker/containers/bd49a0a0368b99a9f69981d8b921ea1830957451577b635a07d5425d48e1144b

30M / var/lib/docker/containers/8f732390a020a6ef647fabb04da32c87d6341b72ac2af6bb4a1cf5743fda54db

88M / var/lib/docker/containers/648e883aa0a93f696f64e4ab76434657f4845769fe1eaaad49c2dc1d7960f2b0

171M / var/lib/docker/containers/8de7ff9f0276586a6ab346c2be1c9dc879bbb0d795fa7776c1d8d1568ea2794a

354M / var/lib/docker/containers

2. Select the container you want to clean for cleaning

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$cat / dev/null > / var/lib/docker/containers/container_id/container_log_name

The above command clears the corresponding log, such as:

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Cat / dev/null > / var/lib/docker/containers/374aa0ba92b37d829012282ff15c1bb838d95dedb54589874c4285991be2d4aa/374aa0ba92b37d829012282ff15c1bb838d95dedb54589874c4285991be2d4aa-json.log

3. Limit the size of log files

When you start the container, you can set the size and format of the log file through parameters.

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Docker run-it-log-opt max-size=10m-log-opt max-file=3 alpine ash

At this point, the study of "what to do if the disk is full when there are too many Docker logs" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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