如何解決Docker日志太多導(dǎo)致磁盤占滿的問題

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Docker容器在啟動(dòng)/重啟的時(shí)候會(huì)往 /var/lib/docker 中寫東西，如果你在啟動(dòng)docker容器遇到 No space left on device 的問題，可以按照下面的步驟進(jìn)行清理相關(guān)的日志操作。

1、 對 /var/lib/docker/containers 下的文件夾進(jìn)行排序，看看哪個(gè)容器占用了太多的磁盤空間

$ du -d1 -h /var/lib/docker/containers | sort -h

上面的命令會(huì)按照升序的方式對于容器文件夾進(jìn)行排序，并列出容器文件夾的大小:

[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、選擇你要清理的容器進(jìn)行清理

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

上述命令會(huì)清空對應(yīng)的日志,如:

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

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