在rkt容器中执行命令，输出结果，然后退出
我正在寻找一个相当于下面的rkt命令的rkt命令：
docker run nginx:1.11.5 find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null
nginx:1.11.5命令从nginx:1.11.5创build一个新的容器nginx:1.11.5 ，执行find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null （打印所有具有setuid和setgid权限的二进制文件到stdout），然后杀死容器。 结果如下所示：
root@localhost:~# docker run nginx:1.11.5 find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null -rwsr-xr-x 1 root root 40168 Nov 18 2015 /bin/su -rwsr-xr-x 1 root root 40000 Mar 29 2015 /bin/mount -rwsr-xr-x 1 root root 27416 Mar 29 2015 /bin/umount -rwsr-xr-x 1 root root 61392 Oct 28 2014 /bin/ping6 -rwsr-xr-x 1 root root 70576 Oct 28 2014 /bin/ping -rwsr-xr-x 1 root root 53616 Nov 18 2015 /usr/bin/chfn -rwsr-xr-x 1 root root 39912 Nov 18 2015 /usr/bin/newgrp -rwxr-sr-x 1 root tty 27232 Mar 29 2015 /usr/bin/wall -rwsr-xr-x 1 root root 54192 Nov 18 2015 /usr/bin/passwd -rwxr-sr-x 1 root shadow 22744 Nov 18 2015 /usr/bin/expiry -rwsr-xr-x 1 root root 75376 Nov 18 2015 /usr/bin/gpasswd -rwsr-xr-x 1 root root 44464 Nov 18 2015 /usr/bin/chsh -rwxr-sr-x 1 root shadow 62272 Nov 18 2015 /usr/bin/chage -rwxr-sr-x 1 root shadow 35408 Jan 28 2016 /sbin/unix_chkpwd
这是我迄今为止所尝试的：
rkt run --insecure-options=image --net=host docker://nginx find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null
和
rkt run --insecure-options=image --net=host docker://nginx --exec find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null
两者都不返回输出。
我可以通过用--exec /bin/bash覆盖最初的命令并添加--interactive标志来获取我想要的信息，如下所示：
root@localhost:~# rkt run --interactive --insecure-options=image --net=host docker://nginx --exec /bin/bash root@rkt-b5452809-0253-4da4-8026-d678c9bf7929:/# find / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null -rwxr-sr-x 1 root shadow 35408 Jan 28 2016 /sbin/unix_chkpwd -rwsr-xr-x 1 root root 40000 Mar 29 2015 /bin/mount -rwsr-xr-x 1 root root 61392 Oct 28 2014 /bin/ping6 -rwsr-xr-x 1 root root 40168 Nov 18 2015 /bin/su -rwsr-xr-x 1 root root 27416 Mar 29 2015 /bin/umount -rwsr-xr-x 1 root root 70576 Oct 28 2014 /bin/ping -rwxr-sr-x 1 root tty 27232 Mar 29 2015 /usr/bin/wall -rwsr-xr-x 1 root root 75376 Nov 18 2015 /usr/bin/gpasswd -rwsr-xr-x 1 root root 44464 Nov 18 2015 /usr/bin/chsh -rwsr-xr-x 1 root root 53616 Nov 18 2015 /usr/bin/chfn -rwsr-xr-x 1 root root 54192 Nov 18 2015 /usr/bin/passwd -rwxr-sr-x 1 root shadow 62272 Nov 18 2015 /usr/bin/chage -rwxr-sr-x 1 root shadow 22744 Nov 18 2015 /usr/bin/expiry -rwsr-xr-x 1 root root 39912 Nov 18 2015 /usr/bin/newgrp root@rkt-b5452809-0253-4da4-8026-d678c9bf7929:/# exit exit root@localhost:~#
我将如何在一个命令中做到这一点？
您需要使用--将parameter passing给图像。
root@localhost:~# rkt run --insecure-options=image --net=host docker://nginx --exec find -- / -perm +6000 -type f -exec ls -ld {} \; 2> /dev/null [ 4356.161333] nginx[5]: -rwxr-sr-x 1 root shadow 62272 Feb 24 08:09 /usr/bin/chage [ 4356.163359] nginx[5]: -rwsr-xr-x 1 root root 53616 Feb 24 08:09 /usr/bin/chfn [ 4356.165202] nginx[5]: -rwsr-xr-x 1 root root 44464 Feb 24 08:09 /usr/bin/chsh [ 4356.167506] nginx[5]: -rwxr-sr-x 1 root shadow 22744 Feb 24 08:09 /usr/bin/expiry [ 4356.169553] nginx[5]: -rwsr-xr-x 1 root root 75376 Feb 24 08:09 /usr/bin/gpasswd [ 4356.171651] nginx[5]: -rwsr-xr-x 1 root root 39912 Feb 24 08:09 /usr/bin/newgrp [ 4356.173452] nginx[5]: -rwsr-xr-x 1 root root 54192 Feb 24 08:09 /usr/bin/passwd [ 4356.175704] nginx[5]: -rwxr-sr-x 1 root tty 27232 Mar 29 2015 /usr/bin/wall [ 4356.229841] nginx[5]: -rwsr-xr-x 1 root root 40000 Mar 29 2015 /bin/mount [ 4356.231914] nginx[5]: -rwsr-xr-x 1 root root 70576 Oct 28 2014 /bin/ping [ 4356.234003] nginx[5]: -rwsr-xr-x 1 root root 61392 Oct 28 2014 /bin/ping6 [ 4356.235932] nginx[5]: -rwsr-xr-x 1 root root 40168 Feb 24 08:09 /bin/su [ 4356.237872] nginx[5]: -rwsr-xr-x 1 root root 27416 Mar 29 2015 /bin/umount [ 4356.250513] nginx[5]: /usr/bin/find: `/proc/5/task/5/fd/5': No such file or directory [ 4356.250812] nginx[5]: /usr/bin/find: `/proc/5/task/5/fdinfo/5': No such file or directory [ 4356.251120] nginx[5]: /usr/bin/find: `/proc/5/fd/5': No such file or directory [ 4356.251355] nginx[5]: /usr/bin/find: `/proc/5/fdinfo/5': No such file or directory [ 4356.254186] nginx[5]: -rwxr-sr-x 1 root shadow 35408 Nov 12 07:43 /sbin/unix_chkpwd
有关更多信息，请参见https://coreos.com/rkt/docs/latest/subcommands/run.html#passing-arguments 。