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disable unnecessary Ubuntu services during node bootstrap

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Mask and stop services that compete with apt operations or are not
needed for Kubernetes nodes:

- apt-news.service/timer: fetches APT news, holds apt lock
- esm-cache.service: Ubuntu Pro cache updates
- snapd.service/socket: Snap package manager
- lxd-installer.socket: LXD container helper
- ubuntu-advantage.service: Ubuntu Pro auto-attach
- unattended-upgrades.service: automatic security updates
- motd-news.timer: MOTD news fetching
- update-notifier-motd.timer: "new Ubuntu version" checks
- update-notifier-download.timer: failed package retry

This addresses CI timeouts where apt-news.service running concurrently
with apt-get update caused the master node to take ~5 minutes for
package index downloads (vs ~5-9 seconds on worker nodes).

Signed-off-by: Davanum Srinivas <davanum@gmail.com>
This commit is contained in:
Davanum Srinivas 2026-02-03 16:48:22 -05:00
parent f81e280ca9
commit 67043dca9f
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GPG key ID: 6DEA177048756885
2 changed files with 4 additions and 0 deletions
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2
cluster/gce/gci/master.yaml
View file

@ -129,6 +129,8 @@ write_files:
WantedBy=multi-user.target WantedBy=multi-user.target
runcmd: runcmd:
- systemctl mask apt-news.service apt-news.timer esm-cache.service snapd.service snapd.socket lxd-installer.socket ubuntu-advantage.service unattended-upgrades.service motd-news.timer update-notifier-motd.timer update-notifier-download.timer || true
- systemctl stop unattended-upgrades.service || true
- systemctl daemon-reload - systemctl daemon-reload
- systemctl enable kube-bootstrap-logs-forwarder.service - systemctl enable kube-bootstrap-logs-forwarder.service
- systemctl enable kube-master-installation.service - systemctl enable kube-master-installation.service

2
cluster/gce/gci/node.yaml
View file

@ -87,6 +87,8 @@ write_files:
options sunrpc max_resvport=986 options sunrpc max_resvport=986
runcmd: runcmd:
- systemctl mask apt-news.service apt-news.timer esm-cache.service snapd.service snapd.socket lxd-installer.socket ubuntu-advantage.service unattended-upgrades.service motd-news.timer update-notifier-motd.timer update-notifier-download.timer || true
- systemctl stop unattended-upgrades.service || true
- systemctl daemon-reload - systemctl daemon-reload
- systemctl enable kube-node-installation.service - systemctl enable kube-node-installation.service
- systemctl enable kube-node-configuration.service - systemctl enable kube-node-configuration.service