碼頭集裝箱不會從主機繼承ulimit

Question

我已閱讀heredocker容器從主機繼承ulimit屬性。這似乎不會發生我的容器。特別是，我需要max locked memory屬性從主機繼承。有誰知道如何修理它？

ubuntu@host:~$ ulimit -a 
core file size   (blocks, -c) 0 
data seg size   (kbytes, -d) unlimited 
scheduling priority    (-e) 0 
file size    (blocks, -f) unlimited 
pending signals     (-i) 31404 
max locked memory  (kbytes, -l) unlimited 
max memory size   (kbytes, -m) unlimited 
open files      (-n) 50000 
pipe size   (512 bytes, -p) 8 
POSIX message queues  (bytes, -q) 819200 
real-time priority    (-r) 0 
stack size    (kbytes, -s) 8192 
cpu time    (seconds, -t) unlimited 
max user processes    (-u) 50000 
virtual memory   (kbytes, -v) unlimited 
file locks      (-x) unlimited 
ubuntu@host:~$ docker exec -it container /bin/bash 
root@container:/# ulimit -a 
core file size   (blocks, -c) 0 
data seg size   (kbytes, -d) unlimited 
scheduling priority    (-e) 0 
file size    (blocks, -f) unlimited 
pending signals     (-i) 31404 
max locked memory  (kbytes, -l) 64 
max memory size   (kbytes, -m) unlimited 
open files      (-n) 524288 
pipe size   (512 bytes, -p) 8 
POSIX message queues  (bytes, -q) 819200 
real-time priority    (-r) 0 
stack size    (kbytes, -s) 8192 
cpu time    (seconds, -t) unlimited 
max user processes    (-u) 524288 
virtual memory   (kbytes, -v) unlimited 
file locks      (-x) unlimited 

Answer 1

如果要爲容器設置自定義ulimits，則可以使用--ulimit選項。例如;

docker run -it --rm --ulimit memlock=32768:32768 ubuntu sh -c "ulimit -a" 

表演：

time(seconds)  unlimited 
file(blocks)   unlimited 
data(kbytes)   unlimited 
stack(kbytes)  8192 
coredump(blocks)  0 
memory(kbytes)  unlimited 
locked memory(kbytes) 32 
process    7873 
nofiles    1024 
vmemory(kbytes)  unlimited 
locks    unlimited 

您可以找到的文檔中的詳細信息; https://docs.docker.com/engine/reference/commandline/run/

有關限制容器資源的其他方法，請參閱本節; https://docs.docker.com/engine/reference/run/#runtime-constraints-on-resources