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Description of problem:
Setup user namespace is not working in runc.

# cat config.json
   "linux": {
        "uidMappings": [
                {
                        "hostID": 1000,
                        "containerID": 0,
                        "size": 32000
                }
        ],
        "gidMappings": [
                {
                        "hostID": 1000,
                        "containerID": 0,
                        "size": 32000
                }
        ],
...
    "process": {
        "args": [
            "touch",
            "root/foobar"
        ],
...
        "user": {}

# cat /proc/cmdline
... user_namespace.enable=1

# runc start root
could not synchronise with container process: operation not permitted

We might need to update to the latest upstream version which is working fine.

# /usr/local/sbin/runc -v
runc version 1.0.0-rc2
commit: 1a9dd2678d2d6ad574f05cb7b9ae46ce65586725
spec: 1.0.0-rc3

# /usr/local/sbin/runc create root
# /usr/local/sbin/runc start root
touch: cannot touch 'root/foobar': Permission denied

Version-Release number of selected component (if applicable):
runc-0.1.1-5.el7.x86_64

How reproducible:
always

Can we delay this to 7.3.3?


Mrunal, do you know when runc 1.0.0 will be released?

This is working now as the rebase.