Centos 为什么《播客》要报道；命名空间中没有足够的可用ID“；用不同的UID？

事实：

无根podman非常适合uid

1480

uid

2088的无根播客失败

CentOS 7

内核

3.10.0-1062.1.2.el7.x86_64

播客版本

1.4.4

几乎整个环境都已在两者之间移除

/tmp

的文件系统是

xfs

两个用户的

capsh

输出是相同的，但uid/username的输出是相同的

两个UID在

/etc/sub{u，g}id

文件中有相同的条目

$HOME/.config/containers/storage.conf

是默认值，除了UID之外，这两个文件之间是相同的。下面的

storage.conf

仅供参考

我编写了以下shell脚本，以演示两者在一个多么相似的环境中运行：

#/垃圾箱/垃圾箱
一四八零二零八八年为我；做
sudo chroot--userspec“$i”：10/env-i/bin/sh默认情况下CentOS 7.6不支持无根buildah-请参阅和
podman系统是否迁移

fix

命名空间中可能没有足够的ID可供您使用

这对我和其他人都有好处：
用户之间的AFAICT、sub UID和GID范围不应重叠。以下是
useradd
手册页对此事的说明，以供参考：

   SUB_GID_MIN (number), SUB_GID_MAX (number), SUB_GID_COUNT
   (number)
       If /etc/subuid exists, the commands useradd and newusers
       (unless the user already have subordinate group IDs)
       allocate SUB_GID_COUNT unused group IDs from the range
       SUB_GID_MIN to SUB_GID_MAX for each new user.

       The default values for SUB_GID_MIN, SUB_GID_MAX,
       SUB_GID_COUNT are respectively 100000, 600100000 and 65536.

   SUB_UID_MIN (number), SUB_UID_MAX (number), SUB_UID_COUNT
   (number)
       If /etc/subuid exists, the commands useradd and newusers
       (unless the user already have subordinate user IDs) allocate
       SUB_UID_COUNT unused user IDs from the range SUB_UID_MIN to
       SUB_UID_MAX for each new user.

       The default values for SUB_UID_MIN, SUB_UID_MAX,
       SUB_UID_COUNT are respectively 100000, 600100000 and 65536.

关键词未使用。
似乎OP已经成功运行了无根播客（并且没有询问buildah）？在CentOS 8.1上从我这里开始工作。这在Arch Linux上为我完成了这个技巧始终咨询主页，然后是StackOverflow，感谢您记住我。这篇红帽博客文章揭示了同样的情况：
[storage]
  driver = "vfs"
  runroot = "/run/user/1480"
  graphroot = "/tmp/1480/.local/share/containers/storage"
  [storage.options]
    size = ""
    remap-uids = ""
    remap-gids = ""
    remap-user = ""
    remap-group = ""
    ostree_repo = ""
    skip_mount_home = ""
    mount_program = ""
    mountopt = ""
    [storage.options.thinpool]
      autoextend_percent = ""
      autoextend_threshold = ""
      basesize = ""
      blocksize = ""
      directlvm_device = ""
      directlvm_device_force = ""
      fs = ""
      log_level = ""
      min_free_space = ""
      mkfsarg = ""
      mountopt = ""
      use_deferred_deletion = ""
      use_deferred_removal = ""
      xfs_nospace_max_retries = ""

$ diff -u /tmp/podman.1480 /tmp/podman.2088
--- /tmp/podman.1480    2019-10-17 22:41:21.991573733 -0400
+++ /tmp/podman.2088    2019-10-17 22:41:26.182584536 -0400
@@ -7,7 +7,7 @@
   Distribution:
     distribution: '"centos"'
     version: "7"
-  MemFree: 45654056960
+  MemFree: 45652697088
   MemTotal: 67306323968
   OCIRuntime:
     package: containerd.io-1.2.6-3.3.el7.x86_64
@@ -24,7 +24,7 @@
   kernel: 3.10.0-1062.1.2.el7.x86_64
   os: linux
   rootless: true
-  uptime: 30h 17m 50.23s (Approximately 1.25 days)
+  uptime: 30h 17m 54.42s (Approximately 1.25 days)
 registries:
   blocked: null
   insecure: null
@@ -35,14 +35,14 @@
   - quay.io
   - registry.centos.org
 store:
-  ConfigFile: /tmp/1480/.config/containers/storage.conf
+  ConfigFile: /tmp/2088/.config/containers/storage.conf
   ContainerStore:
     number: 0
   GraphDriverName: vfs
   GraphOptions: null
-  GraphRoot: /tmp/1480
+  GraphRoot: /tmp/2088
   GraphStatus: {}
   ImageStore:
     number: 0
-  RunRoot: /run/user/1480
-  VolumePath: /tmp/1480/volumes
+  RunRoot: /run/user/2088
+  VolumePath: /tmp/2088/volumes

   SUB_GID_MIN (number), SUB_GID_MAX (number), SUB_GID_COUNT
   (number)
       If /etc/subuid exists, the commands useradd and newusers
       (unless the user already have subordinate group IDs)
       allocate SUB_GID_COUNT unused group IDs from the range
       SUB_GID_MIN to SUB_GID_MAX for each new user.

       The default values for SUB_GID_MIN, SUB_GID_MAX,
       SUB_GID_COUNT are respectively 100000, 600100000 and 65536.

   SUB_UID_MIN (number), SUB_UID_MAX (number), SUB_UID_COUNT
   (number)
       If /etc/subuid exists, the commands useradd and newusers
       (unless the user already have subordinate user IDs) allocate
       SUB_UID_COUNT unused user IDs from the range SUB_UID_MIN to
       SUB_UID_MAX for each new user.

       The default values for SUB_UID_MIN, SUB_UID_MAX,
       SUB_UID_COUNT are respectively 100000, 600100000 and 65536.