【Docker】嵌入式检测Docker安装环境配置-解决安装问题

看完此文后，你应该会感慨，能遇到下面链接中的脚本真是相见恨晚，在安装docker过程中，各种疑难杂症都给罗列出来了！

前言

之前在imx6q的板子上整docker过程中，把网都快爬穿了，过程中有各种奇形怪状的问题，好在最后都解决了。写此文的目的第一是做个总结，第二也为和我一样对新事物的好奇而又执着的小伙伴们少走些弯路。不然的话，遇到一个问题又要耗费大量时间来定位问题。人生苦短，没必要浪费自己的时间！

好了，不废话了，直接进入主题吧--->

常见问题：

1、Error response from daemon: failed to create endpoint (...) on network bridge: failed to add the host (veth1d85371) <=> sandbox (vethbc264f6) pair interfaces: operation not supported.

2、docker can not run in armv7l

解决方法：Device Drivers -> Network device support -> Network core driver support

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测试环境

CPU：iMX6q

kernel：4.1.15

Ubuntu：16.04

架构：armv7l

---

Ubuntu安装Docker要求

说明：Docker 要求 Ubuntu 系统的内核版本高于 3.10

来源：https://docs.docker.com/install/linux/docker-ce/ubuntu/

【重点】检查当前设备是否具备安装docker的配置要求：

脚本来源：https://github.com/moby/moby/blob/master/contrib/check-config.sh

步骤1：将上面的脚本复制到当前设备上；

步骤2：给脚本赋予可执行权限，并执行它；

步骤3：运行脚本后会出现这样的检测结果：

root@ubuntu-arm:~# ./check-config.sh 
info: reading kernel config from /proc/config.gz ...

Generally Necessary:
- cgroup hierarchy: properly mounted [/sys/fs/cgroup]
- CONFIG_NAMESPACES: enabled
- CONFIG_NET_NS: enabled
- CONFIG_PID_NS: enabled
- CONFIG_IPC_NS: enabled
- CONFIG_UTS_NS: enabled
- CONFIG_CGROUPS: enabled
- CONFIG_CGROUP_CPUACCT: enabled
- CONFIG_CGROUP_DEVICE: enabled
- CONFIG_CGROUP_FREEZER: enabled
- CONFIG_CGROUP_SCHED: enabled
- CONFIG_CPUSETS: enabled
- CONFIG_MEMCG: enabled
- CONFIG_KEYS: enabled
- CONFIG_VETH: enabled
- CONFIG_BRIDGE: enabled
- CONFIG_BRIDGE_NETFILTER: enabled
- CONFIG_NF_NAT_IPV4: enabled
- CONFIG_IP_NF_FILTER: enabled
- CONFIG_IP_NF_TARGET_MASQUERADE: enabled
- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: enabled
- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: enabled
- CONFIG_NETFILTER_XT_MATCH_IPVS: enabled
- CONFIG_IP_NF_NAT: enabled
- CONFIG_NF_NAT: enabled
- CONFIG_NF_NAT_NEEDED: enabled
- CONFIG_POSIX_MQUEUE: enabled
- CONFIG_DEVPTS_MULTIPLE_INSTANCES: enabled

Optional Features:
- CONFIG_USER_NS: enabled
- CONFIG_SECCOMP: enabled
- CONFIG_CGROUP_PIDS: missing
- CONFIG_MEMCG_SWAP: enabled
- CONFIG_MEMCG_SWAP_ENABLED: enabled
    (cgroup swap accounting is currently enabled)
- CONFIG_MEMCG_KMEM: enabled
- CONFIG_BLK_CGROUP: enabled
- CONFIG_BLK_DEV_THROTTLING: enabled
- CONFIG_IOSCHED_CFQ: enabled
- CONFIG_CFQ_GROUP_IOSCHED: enabled
- CONFIG_CGROUP_PERF: enabled
- CONFIG_CGROUP_HUGETLB: missing
- CONFIG_NET_CLS_CGROUP: enabled
- CONFIG_CGROUP_NET_PRIO: enabled
- CONFIG_CFS_BANDWIDTH: enabled
- CONFIG_FAIR_GROUP_SCHED: enabled
- CONFIG_RT_GROUP_SCHED: enabled
- CONFIG_IP_NF_TARGET_REDIRECT: enabled
- CONFIG_IP_VS: enabled
- CONFIG_IP_VS_NFCT: enabled
- CONFIG_IP_VS_PROTO_TCP: enabled
- CONFIG_IP_VS_PROTO_UDP: enabled
- CONFIG_IP_VS_RR: enabled
- CONFIG_EXT3_FS: enabled
- CONFIG_EXT3_FS_XATTR: enabled
- CONFIG_EXT3_FS_POSIX_ACL: enabled
- CONFIG_EXT3_FS_SECURITY: enabled
- CONFIG_EXT4_FS: enabled
- CONFIG_EXT4_FS_POSIX_ACL: enabled
- CONFIG_EXT4_FS_SECURITY: enabled
- Network Drivers:
  - "overlay":
    - CONFIG_VXLAN: enabled
      Optional (for encrypted networks):
      - CONFIG_CRYPTO: enabled
      - CONFIG_CRYPTO_AEAD: enabled
      - CONFIG_CRYPTO_GCM: enabled
      - CONFIG_CRYPTO_SEQIV: enabled
      - CONFIG_CRYPTO_GHASH: enabled
      - CONFIG_XFRM: enabled
      - CONFIG_XFRM_USER: enabled
      - CONFIG_XFRM_ALGO: enabled
      - CONFIG_INET_ESP: enabled
      - CONFIG_INET_XFRM_MODE_TRANSPORT: enabled
  - "ipvlan":
    - CONFIG_IPVLAN: enabled
  - "macvlan":
    - CONFIG_MACVLAN: enabled
    - CONFIG_DUMMY: enabled
  - "ftp,tftp client in container":
    - CONFIG_NF_NAT_FTP: enabled
    - CONFIG_NF_CONNTRACK_FTP: enabled
    - CONFIG_NF_NAT_TFTP: enabled
    - CONFIG_NF_CONNTRACK_TFTP: enabled
- Storage Drivers:
  - "aufs":
    - CONFIG_AUFS_FS: missing
  - "btrfs":
    - CONFIG_BTRFS_FS: enabled
    - CONFIG_BTRFS_FS_POSIX_ACL: enabled
  - "devicemapper":
    - CONFIG_BLK_DEV_DM: enabled
    - CONFIG_DM_THIN_PROVISIONING: enabled
  - "overlay":
    - CONFIG_OVERLAY_FS: enabled
  - "zfs":
    - /dev/zfs: missing
    - zfs command: missing
    - zpool command: missing

Limits:
- /proc/sys/kernel/keys/root_maxkeys: 1000000

步骤4：如果上面的结果中有异常，那么现在就可以去内核中开启相应的选项吧。 

如果幸运，你的问题应该解决了。

祝你成功！Y(^_^)Y

[参考链接]：https://github.com/moby/moby/issues/27426