Public bug reported:
Hi there,
I notice that using the latest version of cloud-init on ubuntu xenial running
on AWS the cloud-init isn't changing the 50-cloud-init.cfg file on boot, that
behavior can turn the instance unreachable in some cases.
A particular case is when you change the instance type from t2.* to r4.* and
try to enable the ENA support, the network changes from eth0 to ens3 and the
50-cloud-init.cfg isn't changed to reflect it and turns the instance
unreachable.
To identify:
Launch an instance on us-east-1 using an old ami (ami-e13739f6) and manually
change the file /etc/network/interfaces.d/50-cloud-init.cfg.
After a stop/start, the file is regenerated
Launch an instance on us-east-1 using the latest ami (ami-66506c1c) and anually
change the file /etc/network/interfaces.d/50-cloud-init.cfg.
After a stop/start, the file remains the same.
I cannot found if it's a bug or an expected behavior, however, it seems
a bug as the file has a message saying that "Changes to it will not
persist across an instance."
** Affects: cloud-init
Importance: Undecided
Status: New
** Attachment added: "cloud-init.tar"
https://bugs.launchpad.net/bugs/1758879/+attachment/5091075/+files/cloud-init.tar
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https://bugs.launchpad.net/bugs/1758879
Title:
cloud-init aws doesn't changing 50-cloud-init.cfg on boot
Status in cloud-init:
New
Bug description:
Hi there,
I notice that using the latest version of cloud-init on ubuntu xenial running
on AWS the cloud-init isn't changing the 50-cloud-init.cfg file on boot, that
behavior can turn the instance unreachable in some cases.
A particular case is when you change the instance type from t2.* to r4.* and
try to enable the ENA support, the network changes from eth0 to ens3 and the
50-cloud-init.cfg isn't changed to reflect it and turns the instance
unreachable.
To identify:
Launch an instance on us-east-1 using an old ami (ami-e13739f6) and manually
change the file /etc/network/interfaces.d/50-cloud-init.cfg.
After a stop/start, the file is regenerated
Launch an instance on us-east-1 using the latest ami (ami-66506c1c) and
anually change the file /etc/network/interfaces.d/50-cloud-init.cfg.
After a stop/start, the file remains the same.
I cannot found if it's a bug or an expected behavior, however, it
seems a bug as the file has a message saying that "Changes to it will
not persist across an instance."
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1758879/+subscriptions
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