Public bug reported:
in the ec2 datasource, cloud-init runs dhclient from a tmp file in order
to avoid apparmor restrictions and side affects.
In a change for bug 1707222 we started using /run/cloud-init for tmpfiles.
/run is mounted noexec. See example:
$ sudo /run/cloud-init/tmp/dhclient -1 -v -lf
/run/cloud-init/tmp/cloud-init-dhcp-bs6g4xkw/dhcp.leases -pf
/run/cloud-init/tmp/cloud-init-dhcp-bs6g4xkw/dhclient.pid eth0 -sf /bin/true
sudo: unable to execute /run/cloud-init/tmp/dhclient: Permission denied
So, we need a tmp file in a place that allows execution.
** Affects: cloud-init
Importance: High
Status: Confirmed
** Affects: cloud-init (Ubuntu)
Importance: High
Status: Confirmed
** Merge proposal linked:
https://code.launchpad.net/~chad.smith/cloud-init/+git/cloud-init/+merge/330875
** Changed in: cloud-init
Status: New => Confirmed
** Changed in: cloud-init
Importance: Undecided => High
** Also affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
** Changed in: cloud-init (Ubuntu)
Status: New => Confirmed
** Changed in: cloud-init (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1717627
Title:
permission denied when executing dhclient in Ec2 datasource
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