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昨天 Veeam 纳管一台 Ubuntu 20.04 时遇到了一些问题，先是提示主机需要联外网下载依赖，配置网络之后，agent 安装又失败了，报错： bash 2025/11/18 17:06:50 Warning Failed to connect to 10.199.41.71 Details: Failed to execute agent management command print
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昨天 Veeam 纳管一台 Ubuntu 20.04 时遇到了一些问题，先是提示主机需要联外网下载依赖，配置网络之后，agent 安装又失败了，报错：
12025/11/18 17:06:50 Warning Failed to connect to 10.199.41.71 Details: Failed to execute agent management command print. No such file or directory Failed to connect: /var/tmp/veeam/socket/veeamservice.sock. Failed to connect to veeamservice daemon.本文记录一下分析过程以及解决步骤。
首先查看主机系统版本：
1root@apods01:~# cat /etc/lsb-release 2DISTRIB_ID=Ubuntu3DISTRIB_RELEASE=20.044DISTRIB_CODENAME=focal5DISTRIB_DESCRIPTION="Ubuntu 20.04.1 LTS"VBR 纳管报错，格式化内容之后如下：
1Failed to install 2veeam_6.3.1.1016_amd64.deb, 3veeam-libs_6.3.1.1016_amd64.deb4veeamsnap_6.3.1.1016_all.deb packages56Failed to fetch 7http://archive.ubuntu.com/ubuntu/pool/main/d/dpkg/libdpkg-perl_1.19.7ubuntu3.2_all.deb 89Cannot initiate the connection to archive.ubuntu.com:80 (2620:2d:4000:1::103). 10- connect (101: Network is unreachable) 11Cannot initiate the connection to archive.ubuntu.com:80 (2620:2d:4002:1::103). 12- connect (101: Network is unreachable) 13Cannot initiate the connection to archive.ubuntu.com:80 (2620:2d:4002:1::102). 14- connect (101: Network is unreachable) 15Could not connect to archive.ubuntu.com:80 (91.189.91.83), 16connection timed out Could not connect to archive.ubuntu.com:80 (185.125.190.81), 17connection timed out Could not connect to archive.ubuntu.com:80 (91.189.91.82), 18connection timed out联系网络管理员临时开通外网后，重新执行 Rescan，提示安装成功，但是执行备份的时候报错：
12025/11/18 17:06:50 Warning Failed to connect to 10.199.41.71 Details: Failed to execute agent management command print. No such file or directory Failed to connect: /var/tmp/veeam/socket/veeamservice.sock. Failed to connect to veeamservice daemon.查看 Rescan 日志：
1[18.11.2025 17:01:24.248] <18> Error (3) Agent management command has failed, exit code 255, error text: No such file or directory2[18.11.2025 17:01:24.248] <18> Error (3) Failed to connect: /var/tmp/veeam/socket/veeamservice.sock.3[18.11.2025 17:01:24.248] <18> Error (3) Failed to connect to veeamservice daemon.4[18.11.2025 17:01:24.248] <18> Error (3) Failed to process discovery operation for Linux host: 10.199.41.715[18.11.2025 17:01:24.248] <18> Error (3) Failed to execute agent management command print. No such file or directory6[18.11.2025 17:01:24.248] <18> Error (3) Failed to connect: /var/tmp/veeam/socket/veeamservice.sock.7[18.11.2025 17:01:24.248] <18> Error (3) Failed to connect to veeamservice daemon. (System.Exception)检查主机上是否存在这个文件：
1root@apods01:~# cd /var/tmp/veeam/socket/2-bash: cd: /var/tmp/veeam/socket/: No such file or directory当前主机不存在以上文件，但是正常纳管的主机是存在的：
1[root@SQCSLEAP01N ~]# cd /var/tmp/veeam/socket2[root@SQCSLEAP01N socket]# ls3events.sock veeamservice.sock看来就是因为这个了，怀疑是第一次安装的时候有问题，尝试卸载 agent 后重新安装：
首先卸载安装的 veeam 相关依赖：
1apt-get remove veeam veeam-libs veeamsnap2apt-get remove veeam veeam-libs blksnap3apt-get remove veeam-nosnap veeam-libs删除 veeam 安装目录：
1root@apods01:/opt# rm -rf veeam/2root@apods01:/opt# 3root@apods01:/opt# ll4total 85drwxr-xr-x 2 root root 4096 Nov 18 09:23 ./6drwxr-xr-x 21 root root 4096 May 31 2024 ../杀掉所有 veeam 相关进程：
1root@apods01:/opt# ps -ef|grep veeam2root 463548 1 0 09:22 ? 00:00:00 /opt/veeam/transport/veeamtransport --run-service3root 463567 463548 0 09:22 ? 00:00:00 /opt/veeam/transport/veeamtransport --run-environmentsvc 7:64root 463580 463548 0 09:22 ? 00:00:00 /opt/veeam/transport/veeamimmureposvc --subprocess --log /var/log/VeeamBackup --maxLogSize 15728640 --stdio 10:75root 463651 1 0 09:22 ? 00:00:00 /opt/veeam/deployment/veeamdeploymentsvc --run-service6root 463653 463651 0 09:22 ? 00:00:00 /opt/veeam/deployment/veeamdeploymentsvc --service-process 9:87root 463655 463653 0 09:22 ? 00:00:00 /opt/veeam/deployment/veeamdeploymentsvc --vcp-subprocess 18:1789root@apods01:/opt# kill -9 46365110root@apods01:/opt# kill -9 46354811root@apods01:/opt# kill -9 46356712root@apods01:/opt# kill -9 4635801314root@apods01:/opt# ps -ef|grep veeam15root 465271 392310 0 09:24 pts/0 00:00:00 grep --color=auto veeam在 VBR 重新执行 rescan，成功安装 agent，可以正常备份。
Veeam 纳管 Ubuntu 系统需要提前开通外网下载 deb 依赖包，否则会纳管失败。