The following SSH command responded with a non-zero exit status.Vagrant assumes that this means the command failed!umount /mntStdout from the command:Stderr from the command:umount: /mnt: not mounted 에러

오류 내용

[ansible-server] No Virtualbox Guest Additions installation found.
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.navercorp.com
 * extras: mirror.kakao.com
 * updates: mirror.kakao.com
Resolving Dependencies
--> Running transaction check
---> Package centos-release.x86_64 0:7-8.2003.0.el7.centos will be updated
---> Package centos-release.x86_64 0:7-9.2009.1.el7.centos will be an update
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package             Arch        Version                     Repository    Size
================================================================================
Updating:
 centos-release      x86_64      7-9.2009.1.el7.centos       updates       27 k

Transaction Summary
================================================================================
Upgrade  1 Package

Total download size: 27 k
Downloading packages:
No Presto metadata available for updates
Public key for centos-release-7-9.2009.1.el7.centos.x86_64.rpm is not installed
warning: /var/cache/yum/x86_64/7/updates/packages/centos-release-7-9.2009.1.el7.centos.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
 Userid     : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
 Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
 Package    : centos-release-7-8.2003.0.el7.centos.x86_64 (@anaconda)
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : centos-release-7-9.2009.1.el7.centos.x86_64                  1/2
  Cleanup    : centos-release-7-8.2003.0.el7.centos.x86_64                  2/2
  Verifying  : centos-release-7-9.2009.1.el7.centos.x86_64                  1/2
  Verifying  : centos-release-7-8.2003.0.el7.centos.x86_64                  2/2

Updated:
  centos-release.x86_64 0:7-9.2009.1.el7.centos

Complete!
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.kakao.com
 * extras: mirror.kakao.com
 * updates: mirror.kakao.com
No package kernel-devel-3.10.0-1127.el7.x86_64 available.
Error: Nothing to do
Unmounting Virtualbox Guest Additions ISO from: /mnt
umount: /mnt: not mounted
==> ansible-server: Checking for guest additions in VM...
    ansible-server: No guest additions were detected on the base box for this VM! Guest
    ansible-server: additions are required for forwarded ports, shared folders, host only
    ansible-server: networking, and more. If SSH fails on this machine, please install
    ansible-server: the guest additions and repackage the box to continue.
    ansible-server:
    ansible-server: This is not an error message; everything may continue to work properly,
    ansible-server: in which case you may ignore this message.
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!

umount /mnt

Stdout from the command:



Stderr from the command:

umount: /mnt: not mounted

 

해결 방법

vagrant plugin uninstall vagrant-vbguest
vagrant plugin install vagrant-vbguest --plugin-version 0.21

https://www.devopsroles.com/vagrant-no-virtualbox-guest-additions-installation-found-fixed/

Vagrant No VirtualBox Guest Additions installation found [Fixed] - DevopsRoles.com free 1