Public bug reported:
Newer 4.15 kernels contain the following fix for CVE-2018-1108:
43838a23a05fb ("random: fix crng_ready() test")
This causes cloud-init to stall for a potentially long time during boot
(waiting for entropy I presume). Google reported boot delays of 75
minutes.
I've tracked this down to the following import in templater.py which causes the
delay:
from jinja2 import Template as JTemplate
Which is called when cc_update_etc_hosts is imported.
** Affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: High
Status: Incomplete
** Changed in: linux (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1780062
Title:
Cloud-init causes potentially huge boot delays with 4.15 kernels
Status in cloud-init package in Ubuntu:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
Newer 4.15 kernels contain the following fix for CVE-2018-1108:
43838a23a05fb ("random: fix crng_ready() test")
This causes cloud-init to stall for a potentially long time during
boot (waiting for entropy I presume). Google reported boot delays of
75 minutes.
I've tracked this down to the following import in templater.py which causes
the delay:
from jinja2 import Template as JTemplate
Which is called when cc_update_etc_hosts is imported.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1780062/+subscriptions
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