The problem can be duplicated easily with the following steps: - launch ubuntu 18.04 instance - apt install ubuntu-desktop - create an AMI from this instance - launch a new instance from AMI and fail to connect via ssh Looking at the system log, it is obvious that the network interface ens5 was not started properly. Its status is shown as "down". See image attached. Any ideas? The original instance still works fine in terms of networking.

Ubuntu 18.04 AMI with "ubuntu-desktop" pkg fails to connect (networking)

The problem can be duplicated easily with the following steps:

launch ubuntu 18.04 instance
apt install ubuntu-desktop
create an AMI from this instance
launch a new instance from AMI and fail to connect via ssh

Looking at the system log, it is obvious that the network interface ens5 was not started properly. Its status is shown as "down". See image attached.

Any ideas? The original instance still works fine in terms of networking.

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Jun S.

질문됨 5년 전338회 조회

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이 답변이 도움이 되었나요?커뮤니티가 여러분의 지식을 활용할 수 있도록 정답을 찬성하세요.

It turns out ifupdown pkg brought in by ubuntu-desktop is conflicting with the new netplan in some wired way, I suppose. After "apt purge ifupdown", things are fine now.

Jun S.

답변함 5년 전

Ubuntu 18.04 AMI with "ubuntu-desktop" pkg fails to connect (networking)

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