i do think somehow randomizing the actual times so not all machines ping at the same time would be good i would not be in favor of greatly reducing the frequency though
the real solution, however, is ESM archives in cloud mirrors -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/2034656 Title: Update Ubuntu ESM cache only once daily? Status in cloud-images: New Status in apt package in Ubuntu: New Status in ubuntu-advantage-tools package in Ubuntu: Invalid Bug description: Hi, We're seeing frequent alerts on the Ubuntu ESM archive servers due to surges in requests. On two systems, I'm seeing this: | Sep 6 05:47:16 machine-2 systemd[1]: Starting Update the local ESM caches... | Sep 6 05:47:17 machine-2 systemd[1]: Finished Update the local ESM caches. | Sep 6 10:49:35 machine-2 systemd[1]: Starting Update the local ESM caches... | Sep 6 10:49:35 machine-2 systemd[1]: Finished Update the local ESM caches. | Sep 6 17:17:16 machine-2 systemd[1]: Starting Update the local ESM caches... | Sep 6 17:17:17 machine-2 systemd[1]: Finished Update the local ESM caches. | Sep 6 23:47:16 machine-2 systemd[1]: Starting Update the local ESM caches... | Sep 6 23:47:17 machine-2 systemd[1]: Finished Update the local ESM caches. | Sep 7 01:55:02 machine-2 systemd[1]: Starting Update the local ESM caches... | Sep 7 01:55:02 machine-2 systemd[1]: Finished Update the local ESM caches. On another: | Sep 6 02:41:02 is-bastion-ps5 systemd[1]: Starting Update the local ESM caches... | Sep 6 02:41:03 is-bastion-ps5 systemd[1]: Finished Update the local ESM caches. | Sep 6 09:02:40 is-bastion-ps5 systemd[1]: Starting Update the local ESM caches... | Sep 6 09:02:41 is-bastion-ps5 systemd[1]: Finished Update the local ESM caches. | Sep 6 15:32:40 is-bastion-ps5 systemd[1]: Starting Update the local ESM caches... | Sep 6 15:32:41 is-bastion-ps5 systemd[1]: Finished Update the local ESM caches. | Sep 6 22:02:40 is-bastion-ps5 systemd[1]: Starting Update the local ESM caches... | Sep 6 22:02:41 is-bastion-ps5 systemd[1]: Finished Update the local ESM caches. | Sep 7 04:32:40 is-bastion-ps5 systemd[1]: Starting Update the local ESM caches... | Sep 7 04:32:42 is-bastion-ps5 systemd[1]: Finished Update the local ESM caches. This is all from `/usr/lib/systemd/system/esm-cache.service` which calls `/usr/lib/ubuntu-advantage/esm_cache.py`. Can we please have this run less frequent? Perhaps only once daily which aligns with APT and apt-daily-upgrade.service / unattended- upgrades? Perhaps check existence of a file and run if not, then age of that same file and only run if it's older than a day? I think, from what I can see, this may be triggered from /lib/systemd/system/ua-timer.timer and /etc/apt/apt.conf.d/20apt-esm- hook.conf? See also LP:1554848 which was for APT. On Trusty and Xenial clients we only seem to update daily, but the problem is worse as it's a cron.daily job, so all clients fire simultaneously - could we get this changed to a cron.d job with a randomised firing time instead? To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-images/+bug/2034656/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
