mirror of https://github.com/k3s-io/k3s
48 lines
1.7 KiB
Markdown
48 lines
1.7 KiB
Markdown
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# Container with Kubernetes
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## Capabilities
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By default, Docker containers are "unprivileged" and cannot, for example, run a Docker daemon inside a Docker container. We can have fine grain control over the capabilities using cap-add and cap-drop.More details [here](https://docs.docker.com/reference/run/#runtime-privilege-linux-capabilities-and-lxc-configuration).
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The relationship between Docker's capabilities and [Linux capabilities](http://man7.org/linux/man-pages/man7/capabilities.7.html)
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| Docker's capabilities | Linux capabilities |
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| ---- | ---- |
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| SETPCAP | CAP_SETPCAP |
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| SYS_MODULE | CAP_SYS_MODULE |
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| SYS_RAWIO | CAP_SYS_RAWIO |
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| SYS_PACCT | CAP_SYS_PACCT |
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| SYS_ADMIN | CAP_SYS_ADMIN |
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| SYS_NICE | CAP_SYS_NICE |
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| SYS_RESOURCE | CAP_SYS_RESOURCE |
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| SYS_TIME | CAP_SYS_TIME |
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| SYS_TTY_CONFIG | CAP_SYS_TTY_CONFIG |
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| MKNOD | CAP_MKNOD |
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| AUDIT_WRITE | CAP_AUDIT_WRITE |
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| AUDIT_CONTROL | CAP_AUDIT_CONTROL |
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| MAC_OVERRIDE | CAP_MAC_OVERRIDE |
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| MAC_ADMIN | CAP_MAC_ADMIN |
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| NET_ADMIN | CAP_NET_ADMIN |
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| SYSLOG | CAP_SYSLOG |
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| CHOWN | CAP_CHOWN |
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| NET_RAW | CAP_NET_RAW |
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| DAC_OVERRIDE | CAP_DAC_OVERRIDE |
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| FOWNER | CAP_FOWNER |
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| DAC_READ_SEARCH | CAP_DAC_READ_SEARCH |
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| FSETID | CAP_FSETID |
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| KILL | CAP_KILL |
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| SETGID | CAP_SETGID |
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| SETUID | CAP_SETUID |
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| LINUX_IMMUTABLE | CAP_LINUX_IMMUTABLE |
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| NET_BIND_SERVICE | CAP_NET_BIND_SERVICE |
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| NET_BROADCAST | CAP_NET_BROADCAST |
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| IPC_LOCK | CAP_IPC_LOCK |
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| IPC_OWNER | CAP_IPC_OWNER |
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| SYS_CHROOT | CAP_SYS_CHROOT |
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| SYS_PTRACE | CAP_SYS_PTRACE |
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| SYS_BOOT | CAP_SYS_BOOT |
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| LEASE | CAP_LEASE |
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| SETFCAP | CAP_SETFCAP |
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| WAKE_ALARM | CAP_WAKE_ALARM |
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| BLOCK_SUSPEND | CAP_BLOCK_SUSPEND |
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