Re: [Buildroot] docker package in buildroot

From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Waldemar Brodkorb <wbx@openadk.org>
Cc: buildroot@buildroot.org
Subject: Re: [Buildroot] docker package in buildroot
Date: Tue, 20 Aug 2024 11:45:01 +0200	[thread overview]
Message-ID: <20240820114501.185c9857@windsurf> (raw)
In-Reply-To: <ZsReNU/ELx70PBm1@waldemar-brodkorb.de>

Hello,

On Tue, 20 Aug 2024 11:13:25 +0200
Waldemar Brodkorb <wbx@openadk.org> wrote:

> I would like to test Docker (docker-engine) in Buildroot.
> 
> When starting a container I get:
> # docker run nginx
> docker0: port 1(veth7743781) entered blocking state
> docker0: port 1(veth7743781) entered disabled state
> veth7743781: entered allmulticast mode
> veth7743781: entered promiscuous mode
> docker0: port 1(veth7743781) entered disabled state
> veth7743781 (unregistering): left allmulticast mode
> veth7743781 (unregistering): left promiscuous mode
> docker0: port 1(veth7743781) entered disabled state
> docker: Error response from daemon: failed to create task for
> container: failed to create shim task: OCI runtime create failed:
> error opening file `/proc/self/uid_map`: No such file or directory:
> unknown.
> 
> It is inside Qemu aarch64 system with glibc.

Quick question: did you build your kernel with Buildroot, or
separately? If you built it with Buildroot, did you build it with
Docker already enabled?

Indeed the docker-engine package enables a shitload of kernel options:

define DOCKER_ENGINE_LINUX_CONFIG_FIXUPS
        $(call KCONFIG_ENABLE_OPT,CONFIG_POSIX_MQUEUE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CGROUPS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_MEMCG)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CGROUP_SCHED)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CGROUP_FREEZER)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CPUSETS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CGROUP_DEVICE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_CGROUP_CPUACCT)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NAMESPACES)
        $(call KCONFIG_ENABLE_OPT,CONFIG_UTS_NS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_IPC_NS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_PID_NS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NET_NS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_ADVANCED)
        $(call KCONFIG_ENABLE_OPT,CONFIG_BRIDGE_NETFILTER)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NF_CONNTRACK)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_XTABLES)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_XT_MATCH_ADDRTYPE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_XT_MATCH_CONNTRACK)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NETFILTER_XT_MATCH_IPVS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_IP_NF_IPTABLES)
        $(call KCONFIG_ENABLE_OPT,CONFIG_IP_NF_FILTER)
        $(call KCONFIG_ENABLE_OPT,CONFIG_IP_NF_NAT)
        $(call KCONFIG_ENABLE_OPT,CONFIG_IP_NF_TARGET_MASQUERADE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_BRIDGE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_NET_CORE)
        $(call KCONFIG_ENABLE_OPT,CONFIG_VETH)
        $(call KCONFIG_ENABLE_OPT,CONFIG_OVERLAY_FS)
        $(call KCONFIG_ENABLE_OPT,CONFIG_KEYS)
        $(DOCKER_ENGINE_DRIVER_BTRFS_LINUX_CONFIG_FIXUPS)
        $(DOCKER_ENGINE_DRIVER_DM_LINUX_CONFIG_FIXUPS)
endef

Maybe some are missing? :-)

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
_______________________________________________
buildroot mailing list
buildroot@buildroot.org
https://lists.buildroot.org/mailman/listinfo/buildroot