在ubuntu 13.04之上运行docker的最后版本
root@docker:~# docker version Client version: 0.6.6 Go version (client): go1.2rc3 Git commit (client): 6d42040 Server version: 0.6.6 Git commit (server): 6d42040 Go version (server): go1.2rc3 Last stable version: 0.6.6
但是当我启动容器
root@docker:~# docker run -m=1524288 -i -t ubuntu /bin/bash
root@7b09f638871a:/# free -m
total used free shared buffers cached
Mem: 1992 608 1383 0 30 341
-/+ buffers/cache: 237 1755
Swap: 2047 0 2047
我没有看到任何限制，我的内核启用了cgroups内存限制：
kernel /boot/vmlinuz-3.8.0-33-generic ro console=tty0 root=/dev/xvda1 cgroup_enable=memory swapaccount=1
我在这里缺少什么明显的事情？
自由不会显示，因为这是通过cgroups执行的。主机(容器外)可以使用/ sysfs和cgroup内存检查
原文链接：https://www.f2er.com/ubuntu/349941.htmlvagrant@precise64:~$ docker run -m=524288 -d -t busyBox sleep 3600 f03a017b174f vagrant@precise64:~$ cat /sys/fs/cgroup/memory/lxc/f03a017b174ff1022e0f46bc1b307658c2d96ffef1dd97e7c1929a4ca61ab80f//memory.limit_in_bytes 524288
要看看它的内存不足，你可以运行一些比你分配的内存要多的内存，比如：
docker run -m=524288 -d -p 8000:8000 -t ubuntu:12.10 /usr/bin/python3 -m http.server 8480df1d2d5d vagrant@precise64:~$ docker ps | grep 0f742445f839 vagrant@precise64:~$ docker ps -a | grep 0f742445f839 0f742445f839 ubuntu:12.10 /usr/bin/python3 -m 16 seconds ago Exit 137 blue_pig
在dmesg中，您应该看到容器和进程被杀死：
[ 583.447974] Pid: 1954,comm: python3 Tainted: GF O 3.8.0-33-generic #48~precise1-Ubuntu [ 583.447980] Call Trace: [ 583.447998] [<ffffffff816df13a>] dump_header+0x83/0xbb [ 583.448108] [<ffffffff816df1c7>] oom_kill_process.part.6+0x55/0x2cf [ 583.448124] [<ffffffff81067265>] ? has_ns_capability_noaudit+0x15/0x20 [ 583.448137] [<ffffffff81191cc1>] ? mem_cgroup_iter+0x1b1/0x200 [ 583.448150] [<ffffffff8113893d>] oom_kill_process+0x4d/0x50 [ 583.448171] [<ffffffff816e1cf5>] mem_cgroup_out_of_memory+0x1f6/0x241 [ 583.448187] [<ffffffff816e1e7f>] mem_cgroup_handle_oom+0x13f/0x24a [ 583.448200] [<ffffffff8119000d>] ? mem_cgroup_margin+0xad/0xb0 [ 583.448212] [<ffffffff811949d0>] ? mem_cgroup_charge_common+0xa0/0xa0 [ 583.448224] [<ffffffff81193ff3>] mem_cgroup_do_charge+0x143/0x170 [ 583.448236] [<ffffffff81194125>] __mem_cgroup_try_charge+0x105/0x350 [ 583.448249] [<ffffffff81194987>] mem_cgroup_charge_common+0x57/0xa0 [ 583.448261] [<ffffffff8119517a>] mem_cgroup_newpage_charge+0x2a/0x30 [ 583.448275] [<ffffffff8115b4d3>] do_anonymous_page.isra.35+0xa3/0x2f0 [ 583.448288] [<ffffffff8115f759>] handle_pte_fault+0x209/0x230 [ 583.448301] [<ffffffff81160bb0>] handle_mm_fault+0x2a0/0x3e0 [ 583.448320] [<ffffffff816f844f>] __do_page_fault+0x1af/0x560 [ 583.448341] [<ffffffffa02b0a80>] ? vfsub_read_u+0x30/0x40 [aufs] [ 583.448358] [<ffffffffa02ba3a7>] ? aufs_read+0x107/0x140 [aufs] [ 583.448371] [<ffffffff8119bb50>] ? vfs_read+0xb0/0x180 [ 583.448384] [<ffffffff816f880e>] do_page_fault+0xe/0x10 [ 583.448396] [<ffffffff816f4bd8>] page_fault+0x28/0x30 [ 583.448405] Task in /lxc/0f742445f8397ee7928c56bcd5c05ac29dcc6747c6d1c3bdda80d8e688fae949 killed as a result of limit of /lxc/0f742445f8397ee7928c56bcd5c05ac29dcc6747c6d1c3bdda80d8e688fae949 [ 583.448412] memory: usage 416kB,limit 512kB,failcnt 342
