[Release-1.25] - k3s check-config outdated

[dereknola]

Backport fix for k3s check-config outdated

• k3s check-config outdated #5407

[est-suse]

##Environment Details
Reproduced using VERSION=v1.21.11+k3s1
Validated using COMMIT=9e22489dafb15989cafa7b6bd52ed949471dd057

Node(s) CPU architecture, OS, and version:

NAME="SLES"
VERSION="15-SP4"
VERSION_ID="15.4"
PRETTY_NAME="SUSE Linux Enterprise Server 15 SP4"
ID="sles"
ID_LIKE="suse"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:15:sp4"
DOCUMENTATION_URL="https://documentation.suse.com/"

Cluster Configuration:

1 server

Config.yaml:

write-kubeconfig-mode: 644
debug: true
token: test
selinux: true
protect-kernel-defaults: true
cluster-init: true

Validation Steps

Copy config.yaml: sudo mkdir -p /etc/rancher/k3s/ && sudo cp config.yaml /etc/rancher/k3s/config.yaml
Install K3s:  curl -sfL https://get.k3s.io | INSTALL_K3S_COMMIT=9e22489dafb15989cafa7b6bd52ed949471dd057 sh -

$ k3s check-config

ec2-user@ip-172-31-16-15:~>  k3s check-config | grep -E "Generally
> Necessary:|CONFIG_CGROUP_PIDS|NETFILTER_XT_MATCH_COMMENT|NETFILTER_XT_MATCH_MULTIPORT"
Generally Necessary:
- CONFIG_CGROUP_PIDS: enabled
- CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_MULTIPORT: enabled (as module)

k3s check-config | grep -E "Optional Features:|CONFIG_CGROUP_PIDS"
- CONFIG_CGROUP_PIDS: enabled

[est-suse]

THEN double check in Ubuntu 20.04:

ubuntu@ip-172-31-29-112:~$ k3s check-config

Verifying binaries in /var/lib/rancher/k3s/data/03a432ed90658e5bca51b8c9bc43c640b937bf50df2aaf4b54bd2f51606395f8/bin:
- sha256sum: good
- links: good

System:
- /usr/sbin iptables v1.8.4 (legacy): ok
- swap: disabled
- routes: ok

Limits:
- /proc/sys/kernel/keys/root_maxkeys: 1000000

modprobe: FATAL: Module configs not found in directory /lib/modules/5.15.0-1031-aws
info: reading kernel config from /boot/config-5.15.0-1031-aws ...

Generally Necessary:
- cgroup hierarchy: cgroups Hybrid mounted, cpuset|memory controllers status: good
- /usr/sbin/apparmor_parser
apparmor: enabled and tools installed
- CONFIG_NAMESPACES: enabled
- CONFIG_NET_NS: enabled
- CONFIG_PID_NS: enabled
- CONFIG_IPC_NS: enabled
- CONFIG_UTS_NS: enabled
- CONFIG_CGROUPS: enabled
- CONFIG_CGROUP_PIDS: enabled
- CONFIG_CGROUP_CPUACCT: enabled
- CONFIG_CGROUP_DEVICE: enabled
- CONFIG_CGROUP_FREEZER: enabled
- CONFIG_CGROUP_SCHED: enabled
- CONFIG_CPUSETS: enabled
- CONFIG_MEMCG: enabled
- CONFIG_KEYS: enabled
- CONFIG_VETH: enabled (as module)
- CONFIG_BRIDGE: enabled (as module)
- CONFIG_BRIDGE_NETFILTER: enabled (as module)
- CONFIG_IP_NF_FILTER: enabled (as module)
- CONFIG_IP_NF_TARGET_MASQUERADE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_IPVS: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_MULTIPORT: enabled (as module)
- CONFIG_IP_NF_NAT: enabled (as module)
- CONFIG_NF_NAT: enabled (as module)
- CONFIG_POSIX_MQUEUE: enabled

Optional Features:
- CONFIG_USER_NS: enabled
- CONFIG_SECCOMP: enabled
- CONFIG_BLK_CGROUP: enabled
- CONFIG_BLK_DEV_THROTTLING: enabled
- CONFIG_CGROUP_PERF: enabled
- CONFIG_CGROUP_HUGETLB: enabled
- CONFIG_NET_CLS_CGROUP: enabled (as module)
- CONFIG_CGROUP_NET_PRIO: enabled
- CONFIG_CFS_BANDWIDTH: enabled
- CONFIG_FAIR_GROUP_SCHED: enabled
- CONFIG_RT_GROUP_SCHED: missing
- CONFIG_IP_NF_TARGET_REDIRECT: enabled (as module)
- CONFIG_IP_SET: enabled (as module)
- CONFIG_IP_VS: enabled (as module)
- CONFIG_IP_VS_NFCT: enabled
- CONFIG_IP_VS_PROTO_TCP: enabled
- CONFIG_IP_VS_PROTO_UDP: enabled
- CONFIG_IP_VS_RR: enabled (as module)
- CONFIG_EXT4_FS: enabled
- CONFIG_EXT4_FS_POSIX_ACL: enabled
- CONFIG_EXT4_FS_SECURITY: enabled
- Network Drivers:
  - "overlay":
    - CONFIG_VXLAN: enabled (as module)
      Optional (for encrypted networks):
      - CONFIG_CRYPTO: enabled
      - CONFIG_CRYPTO_AEAD: enabled
      - CONFIG_CRYPTO_GCM: enabled
      - CONFIG_CRYPTO_SEQIV: enabled
      - CONFIG_CRYPTO_GHASH: enabled
      - CONFIG_XFRM: enabled
      - CONFIG_XFRM_USER: enabled (as module)
      - CONFIG_XFRM_ALGO: enabled (as module)
      - CONFIG_INET_ESP: enabled (as module)
      - CONFIG_INET_XFRM_MODE_TRANSPORT: missing
- Storage Drivers:
  - "overlay":
    - CONFIG_OVERLAY_FS: enabled (as module)

STATUS: pass