** Changed in: juju
Milestone: 2.9.19 => 2.9.20
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https://bugs.launchpad.net/bugs/1944080
Title:
[fan-network] Race-condition between "apt update" and dhcp request
causes cloud-init error
Status in OpenStack rabbitmq-server charm:
New
Status in juju:
In Progress
Status in ubuntu-fan package in Ubuntu:
New
Bug description:
Hi,
Using manual provider on top of VMWare.
Juju: 2.9.14
VM: Focal
Containers: Bionic
I've noticed that, in a given Focal host, 2x Bionic containers may
have different behavior: one successfully completes cloud-init whereas
the other fails. The failed container errors at "apt update" in cloud-
init with:
Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Something wicked happened resolving 'PROXY_IP:<PORT>' (-9 - Address family
for hostname not supported)
(Likely this is the line where it breaks:
https://github.com/Debian/apt/blob/766b24b7f7484751950c76bc66d3d6cdeaf949a5/methods/connect.cc#L436)
Failed container, full cloud-init-output.log:
https://pastebin.canonical.com/p/hKNw49mvJP/
Successful container, full cloud-init-output.log:
https://pastebin.canonical.com/p/P6MZdQPrWd/
Host syslog: https://pastebin.canonical.com/p/jjMmWRFd9y/
I can see that, on the host, dnsmasq served the FAN IP to the broken
container after the "apt-update" was called.
----- FAILED CONTAINER -----:
Sep 19 13:02:14 lma-stack-2 dnsmasq-dhcp[1243]: DHCPOFFER(fan-252)
252.252.15.198 00:16:3e:da:dd:c4
apt-update on cloud-init was ran:
Cloud-init v. 21.2-3-g899bfaa9-0ubuntu2~18.04.1 running 'modules:config' at
Sun, 19 Sep 2021 13:02:13 +0000. Up 3.90 seconds.
----- SUCCESSFUL CONTAINER -----:
Sep 19 13:09:40 lma-stack-2 dnsmasq-dhcp[1243]: DHCPOFFER(fan-252)
252.252.15.253 00:16:3e:d7:6b:ef
apt-update on cloud-init was ran:
Cloud-init v. 21.2-3-g899bfaa9-0ubuntu2~18.04.1 running 'modules:config' at
Sun, 19 Sep 2021 13:10:10 +0000. Up 35.99 seconds.
In the case of the Failed Container, the DHCPOFFER arrived 1s after
the "apt update" was requested, whereas the Successful Container
logged a DHCPOFFER 30s before the "apt update".
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