Why user namespace container fails to start on Red Hat Enterprise Linux 7.5 beta with the message "operation not permitted" ?
Issue
- Why user namespace container fails to start on Red Hat Enterprise Linux 7.5 beta with the message "operation not permitted" ?
Complete message
[root@test runc]# runc run -b rhel-runc1 c9
container_linux.go:262: starting container process caused "process_linux.go:339: container init caused \"rootfs_linux.go:57: mounting \\\"sysfs\\\" to rootfs \\\"/root/runc/rhel-runc1/rootfs\\\" at \\\"/sys\\\" caused \\\"operation not permitted\\\"\""
Environment
- Red Hat Enterprise Linux 7.5 Beta
- runc-1.0.0-12.1.gitf8ce01d.el7.x86_64
- Container configured with user namespace and also to use host network
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