[release-1.27] Backports for 2024-02 release cycle

[brandond]

Proposed Changes

Backports:

• Fix on-demand snapshots on ipv6-only nodes #9247
• Fix snapshot reconcile retry #9318
• Bump CNI plugins to v1.4.0 #9249
• Fix issue with coredns node hosts controller #9354
• Add check for etcd-snapshot-dir and fix panic in Walk #9317
• Don't create NodePasswordValidationFailed event if agent is disabled #9312
• Bump kine and set NotifyInterval to what the apiserver expects #9349
• Expose rootless state dir under ~/.rancher/k3s/rootless #9308
• Expose rootless containerd socket directories for external access #9309

Types of Changes

backports

Verification

See linked issues

Testing

Linked Issues

• [Release-1.27] - k3s etcd-snapshot save fails on host with IPv6 only #9369
• [Release-1.27] - etcd snapshot ConfigMap controller excessive sync requeuing #9372
• [Release-1.27] - Bump cni-plugins to v1.4.0 #9378
• [Release-1.27] - Core DNS missing NodeHosts key in Configmap #9381
• [Release-1.27] - Panic when etcd-snapshot-dir does not exist #9390
• [Release-1.27] - "NodePasswordValidationFailed" Event is created on server restart when agent is disabled #9451
• [Release-1.27] - Bump kine and align kine/etcd NotifyInterval with upstream #9454
• [Release-1.27] - Difficult to nsenter rootless k3s to interact with namespaced sockets and filesystems #9457
• [Release-1.27] - Cannot use --container-runtime-endpoint with rootless k3s #9460

User-Facing Change

Further Comments

[codecov]

Codecov Report

Attention: 38 lines in your changes are missing coverage. Please review.

Comparison is base (99e5e6c) 49.40% compared to head (c53cb2a) 45.92%.

Files	Patch %	Lines
pkg/rootless/mounts.go	0.00%	14 Missing ⚠️
pkg/cli/etcdsnapshot/etcd_snapshot.go	72.72%	6 Missing and 3 partials ⚠️
pkg/etcd/snapshot.go	14.28%	4 Missing and 2 partials ⚠️
pkg/etcd/etcd.go	90.32%	2 Missing and 1 partial ⚠️
pkg/node/controller.go	40.00%	2 Missing and 1 partial ⚠️
pkg/server/router.go	25.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.27    #9463      +/-   ##
================================================
- Coverage         49.40%   45.92%   -3.49%     
================================================
  Files               154      154              
  Lines             16509    16572      +63     
================================================
- Hits               8157     7610     -547     
- Misses             7069     7718     +649     
+ Partials           1283     1244      -39     

Flag	Coverage Δ
e2etests	?
inttests	42.79% <63.10%> (+0.01%)	⬆️
unittests	15.12% <18.64%> (-0.01%)	⬇️

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