如何重命名 LXD / LXC 容器

如何在 Linux 操作系统下重命名 LXD 管理的 LXC 容器？

您可以在 lxd 实例内或之间移动或重命名容器。在本快速教程中，我将展示如何在 Linux 操作系统下使用 lxc 命令行重命名 LXD 管理的 LXC 容器。

教程详细信息
难度等级	简单的
Root 权限	不
要求	Linux 终端
类别	路西法
操作系统兼容性	Debian • Fedora • Linux • Ubuntu
预计阅读时间	4 分钟

如何重命名本地 LXD 容器

假设您要将名为 file-server 的本地容器重命名为 debian-wheezy。语法为：或使用别名：请注意，不允许重命名正在运行的容器。因此，首先停止容器，输入：现在重命名它：启动它：验证它：
$ lxc move {old-lxc-name} {new-lxc-name}
mv
$ lxc mv {old-lxc-name} {new-lxc-name}

$ lxc stop file-server

$ lxc move file-server debian-wheezy

$ lxc start debian-wheezy

$ lxc info debian-wheezy

图01：重命名本地容器

登录到 debian-wheezy LXD 容器：
$ lxc exec debian-wheezy bash
如果需要，更改主机名并更新 /etc/hosts：验证新的更改：示例输出：

root@debian-wheezy:~# echo 'debian-wheezy' > /etc/hostname

# Use sed to find and replace text and hostname #

root@debian-wheezy:~# sed -i 's/file-server/debian-wheezy/g' /etc/hosts

root@debian-wheezy:~# exit

$ lxc restart debian-wheezy

$ lxc exec debian-wheezy bash

root@debian-wheezy:~# cat /etc/os-release

PRETTY_NAME="Debian GNU/Linux 7 (wheezy)"
NAME="Debian GNU/Linux"
VERSION_ID="7"
VERSION="7 (wheezy)"
ID=debian
ANSI_COLOR="1;31"
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/support/"
BUG_REPORT_URL="http://bugs.debian.org/"

移动实例而不移动其快照

传递--instance-only以下内容以重命名本地容器实例。例如：
$ lxc move {old_name} {new_name} --instance-only $ lxc move nginx-proxy alpine-nginx-revers-proxy --instance-only

您还可以在两个主机之间移动容器，如果目标名称不同，则重命名。语法是：例如：
$ lxc move [<remote>:][<remote>:][<destination container>]

$ lxc stop server1:foo $ lxc move server1:foo server2:bar

重命名 LXD/LXC 快照

语法相同：
$ lxc move {instance}/{old snapshot name} {instance}/{new snapshot name}
在此示例中，将名为“snap0”的快照重命名为名为“u1”的容器的“before-backups”：
$ lxc info u1

Name: u1
Status: RUNNING
Type: container
Architecture: x86_64
PID: 8853
Created: 2023/06/02 02:42 IST
Last Used: 2023/06/07 13:32 IST
 
Resources:
  Processes: 48
  CPU usage:
    CPU usage (in seconds): 34
...
.....
..
        inet6: ::1/128 (local)
 
Snapshots:
+-------+----------------------+------------+----------+
| NAME  |       TAKEN AT       | EXPIRES AT | STATEFUL |
+-------+----------------------+------------+----------+
| snap0 | 2023/06/09 09:23 IST |            | NO       |
+-------+----------------------+------------+----------+

现在重命名它：
$ lxc move u1/snap0 u1/before-backups
验证它：
$ lxc info u1

Name: u1
Status: RUNNING
Type: container
Architecture: x86_64
PID: 8853
Created: 2023/06/02 02:42 IST
Last Used: 2023/06/07 13:32 IST
 
Resources:
  Processes: 48
  CPU usage:
    CPU usage (in seconds): 34
  Memory usage:
    Memory (current): 551.77MiB
    Memory (peak): 706.62MiB
  Network usage:
    eth0:
      Type: broadcast
      State: UP
      Host interface: veth890f1945
      MAC address: 00:16:3e:fe:ad:7c
      MTU: 1500
      Bytes received: 8.42MB
      Bytes sent: 272.03kB
      Packets received: 9646
      Packets sent: 3097
      IP addresses:
        inet:  10.83.200.242/24 (global)
        inet6: fe80::216:3eff:fefe:ad7c/64 (link)
    lo:
      Type: loopback
      State: UP
      MTU: 65536
      Bytes received: 8.69kB
      Bytes sent: 8.69kB
      Packets received: 86
      Packets sent: 86
      IP addresses:
        inet:  127.0.0.1/8 (local)
        inet6: ::1/128 (local)
 
Snapshots:
+----------------+----------------------+------------+----------+
|      NAME      |       TAKEN AT       | EXPIRES AT | STATEFUL |
+----------------+----------------------+------------+----------+
| before-backups | 2023/06/09 09:23 IST |            | NO       |
+----------------+----------------------+------------+----------+

总结

我们使用lxc move命令在 LXD 服务器内或之间移动实例。换句话说，你可以使用此命令重命名或移动容器。

获取帮助

运行：
$ lxc move --help
这就是我所看到的。

Description:
  Move instances within or in between LXD servers
 
  Transfer modes (--mode):
   - pull: Target server pulls the data from the source server (source must listen on network)
   - push: Source server pushes the data to the target server (target must listen on network)
   - relay: The CLI connects to both source and server and proxies the data (both source and target must listen on network)
 
  The pull transfer mode is the default as it is compatible with all LXD versions.
 
Usage:
  lxc move [<remote>:]<instance>[/<snapshot>] [<remote>:][<instance>[/<snapshot>]] [flags]
 
Aliases:
  move, mv
 
Examples:
  lxc move [<remote>:]<source instance> [<remote>:][<destination instance>] [--instance-only]
      Move an instance between two hosts, renaming it if destination name differs.
 
  lxc move <old name> <new name> [--instance-only]
      Rename a local instance.
 
  lxc move <instance>/<old snapshot name> <instance>/<new snapshot name>
      Rename a snapshot.
 
Flags:
      --allow-inconsistent   Ignore copy errors for volatile files
  -c, --config               Config key/value to apply to the target instance
  -d, --device               New key/value to apply to a specific device
      --instance-only        Move the instance without its snapshots
      --mode                 Transfer mode. One of pull, push or relay. (default "pull")
      --no-profiles          Unset all profiles on the target instance
  -p, --profile              Profile to apply to the target instance
      --stateless            Copy a stateful instance stateless
  -s, --storage              Storage pool name
      --target               Cluster member name
      --target-project       Copy to a project different from the source
 
Global Flags:
      --debug          Show all debug messages
      --force-local    Force using the local unix socket
  -h, --help           Print help
      --project        Override the source project
  -q, --quiet          Don't show progress information
      --sub-commands   Use with help or --help to view sub-commands
  -v, --verbose        Show all information messages
      --version        Print version number

请参阅如何使用 lxc 命令为 LXD 创建快照以获取更多信息。

本篇是LXD 教程系列中的第 7 篇（共22 篇）。继续阅读本系列的其余部分：