테스트 - 총 50분 소요
대상서버 : 192.168.110.115 k8s-worker02
기존 설정
root@k8s-master01:~# kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
k8s-master01 Ready control-plane 56d v1.24.6 192.168.110.111 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-master02 Ready control-plane 56d v1.24.6 192.168.110.112 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-master03 Ready control-plane 56d v1.24.6 192.168.110.113 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-worker01 Ready <none> 56d v1.24.6 192.168.110.114 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-worker02 Ready <none> 56d v1.24.6 192.168.110.115 <none> Ubuntu 20.04.5 LTS 5.4.0-135-generic containerd://1.6.8
Kubernetes 프로세스 종료
root@k8s-worker02:~# systemctl stop kubelet
root@k8s-worker02:~# systemctl stop containerd.service
업그레이드
- 패키지 및 서버 최신버전으로 업데이트
sudo apt update && sudo apt upgrade -y
...
Configuration file '/etc/cloud/cloud.cfg'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : start a shell to examine the situation
The default action is to keep your current version.
*** cloud.cfg (Y/I/N/O/D/Z) [default=N] ?
Nroot@k8s-worker02:~# sudo apt dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
cgroupfs-mount pigz
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2. 불필요 패키지 삭제
root@k8s-worker02:~# sudo apt autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
cgroupfs-mount pigz
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
After this operation, 292 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 96247 files and directories currently installed.)
Removing cgroupfs-mount (1.4) ...
Removing pigz (2.4-1) ...
Processing triggers for man-db (2.9.1-1) ...
3. 코어 업데이트를 위한 패키지 설치
root@k8s-worker02:~# sudo apt install update-manager-core
Reading package lists... Done
Building dependency tree
Reading state information... Done
update-manager-core is already the newest version (1:20.04.10.11).
update-manager-core set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
4. 업그레이드
root@k8s-worker02:~# sudo do-release-upgrade
Checking for a new Ubuntu release
You have not rebooted after updating a package which requires a reboot. Please reboot before upgrading.
root@k8s-worker02:~# reboot
nginx 종료 기다리고 있어서 하드리부트
재시도
root@k8s-worker02:~# sudo do-release-upgrade
...
If you continue, an additional ssh daemon will be started at port
'1022'.
Do you want to continue?
Continue [yN] y
---
Do you want to start the upgrade?
5 packages are going to be removed. 105 new packages are going to be
installed. 575 packages are going to be upgraded.
You have to download a total of 567 M. This download will take about
2 minutes with your connection.
Installing the upgrade can take several hours. Once the download has
finished, the process cannot be canceled.
Continue [yN] Details [d]
y
... yes
...
Configuration file '/etc/systemd/resolved.conf'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : start a shell to examine the situation
The default action is to keep your current version.
*** resolved.conf (Y/I/N/O/D/Z) [default=N] ?
N
...중간에 GUI 화면으로 커널 버전 그대로 쓸건지 물어봄 (default : 기존버전사용)
root@k8s-worker02:~# uname -a
Linux k8s-worker02 5.4.0-139-generic #156-Ubuntu SMP Fri Jan 20 17:27:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
root@k8s-worker02:~#
root@k8s-worker02:~# more /etc/*release
::::::::::::::
/etc/lsb-release
::::::::::::::
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.2 LTS"
커널 업데이트(5.19 테스트)
sudo add-apt-repository ppa:cappelikan/ppa -y
sudo apt install mainline -yhttps://kernel.ubuntu.com/~kernel-ppa/mainline/v5.19-rc8/ wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.19-rc8/amd64/linux-headers-5.19.0-051900rc8_5.19.0-051900rc8.202207242130_all.deb
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.19-rc8/amd64/linux-image-unsigned-5.19.0-051900rc8-generic_5.19.0-051900rc8.202207242130_amd64.deb
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.19-rc8/amd64/linux-modules-5.19.0-051900rc8-generic_5.19.0-051900rc8.202207242130_amd64.debroot@k8s-worker02:~# sudo dpkg -i *.debreboot -froot@k8s-worker02:~# uname -r
5.19.0-051900rc8-generic
root@k8s-worker02:~# more /etc/*release
::::::::::::::
/etc/lsb-release
::::::::::::::
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.2 LTS"root@k8s-master01:~# kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
k8s-master01 Ready control-plane 56d v1.24.6 192.168.110.111 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-master02 Ready control-plane 56d v1.24.6 192.168.110.112 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-master03 Ready control-plane 56d v1.24.6 192.168.110.113 <none> Ubuntu 22.04.2 LTS 5.15.0-60-generic containerd://1.6.8
k8s-worker01 Ready <none> 56d v1.24.6 192.168.110.114 <none> Ubuntu 20.04.4 LTS 5.4.0-135-generic containerd://1.6.8
k8s-worker02 Ready <none> 56d v1.24.6 192.168.110.115 <none> Ubuntu 22.04.2 LTS 5.19.0-051900rc8-generic containerd://1.6.8
root@k8s-master01:~# kubectl -n kube-system get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
calico-kube-controllers-56fd7b8dc-n42cb 1/1 Running 78 (15d ago) 56d 192.168.110.114 k8s-worker01 <none> <none>
calico-node-6jmxc 1/1 Running 1 (52d ago) 56d 192.168.110.111 k8s-master01 <none> <none>
calico-node-k7jpb 1/1 Running 4 (40d ago) 56d 192.168.110.114 k8s-worker01 <none> <none>
calico-node-lpf6w 1/1 Running 7 (78m ago) 56d 192.168.110.115 k8s-worker02 <none> <none>
calico-node-x55bh 1/1 Running 1 (52d ago) 56d 192.168.110.112 k8s-master02 <none> <none>
calico-node-zf7p9 1/1 Running 2 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
coredns-75dbf65849-m7kl7 1/1 Running 0 66m 10.233.113.6 k8s-master02 <none> <none>
coredns-75dbf65849-mtt7d 1/1 Running 0 52d 10.233.66.3 k8s-master01 <none> <none>
csi-nfs-controller-6495ffdf79-dlgkm 3/3 Running 0 123m 192.168.110.114 k8s-worker01 <none> <none>
csi-nfs-node-4mwrh 3/3 Running 10 (2m17s ago) 51d 192.168.110.113 k8s-master03 <none> <none>
csi-nfs-node-6nllb 3/3 Running 0 51d 192.168.110.111 k8s-master01 <none> <none>
csi-nfs-node-h9jdc 3/3 Running 8 (78m ago) 51d 192.168.110.115 k8s-worker02 <none> <none>
csi-nfs-node-mkd92 3/3 Running 2 (15d ago) 51d 192.168.110.114 k8s-worker01 <none> <none>
csi-nfs-node-tp56l 3/3 Running 0 51d 192.168.110.112 k8s-master02 <none> <none>
dns-autoscaler-59b8867c86-tzbwm 1/1 Running 1 (52d ago) 56d 10.233.113.4 k8s-master02 <none> <none>
etcd-k8s-master01 1/1 Running 3 (15d ago) 56d 192.168.110.111 k8s-master01 <none> <none>
etcd-k8s-master02 1/1 Running 3 (15d ago) 56d 192.168.110.112 k8s-master02 <none> <none>
etcd-k8s-master03 1/1 Running 4 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
kube-apiserver-k8s-master01 1/1 Running 50 (15d ago) 56d 192.168.110.111 k8s-master01 <none> <none>
kube-apiserver-k8s-master02 1/1 Running 48 (15d ago) 56d 192.168.110.112 k8s-master02 <none> <none>
kube-apiserver-k8s-master03 1/1 Running 40 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
kube-controller-manager-k8s-master01 1/1 Running 389 (25h ago) 56d 192.168.110.111 k8s-master01 <none> <none>
kube-controller-manager-k8s-master02 1/1 Running 407 (4h53m ago) 56d 192.168.110.112 k8s-master02 <none> <none>
kube-controller-manager-k8s-master03 1/1 Running 395 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
kube-proxy-7lwpx 1/1 Running 1 (52d ago) 56d 192.168.110.111 k8s-master01 <none> <none>
kube-proxy-7p2hw 1/1 Running 2 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
kube-proxy-gwhtf 1/1 Running 2 (78m ago) 56d 192.168.110.115 k8s-worker02 <none> <none>
kube-proxy-tcrq7 1/1 Running 0 56d 192.168.110.114 k8s-worker01 <none> <none>
kube-proxy-tr8fq 1/1 Running 1 (52d ago) 56d 192.168.110.112 k8s-master02 <none> <none>
kube-scheduler-k8s-master01 1/1 Running 382 (45h ago) 56d 192.168.110.111 k8s-master01 <none> <none>
kube-scheduler-k8s-master02 1/1 Running 402 (4h53m ago) 56d 192.168.110.112 k8s-master02 <none> <none>
kube-scheduler-k8s-master03 1/1 Running 393 (2m17s ago) 56d 192.168.110.113 k8s-master03 <none> <none>
metrics-server-5ccdd99954-vn7p9 1/1 Running 0 38d 10.233.125.3 k8s-worker01 <none> <none>
nginx-proxy-k8s-worker01 1/1 Running 0 56d 192.168.110.114 k8s-worker01 <none> <none>
nginx-proxy-k8s-worker02 1/1 Running 2 (78m ago) 56d 192.168.110.115 k8s-worker02 <none> <none>
현재 기본으로 사용중인 cgroup 버전 정보
root@k8s-worker02:~# stat -fc %T /sys/fs/cgroup/
cgroup2fs
cgroup 컨트롤러 확인
root@k8s-worker02:~# ll /sys/fs/cgroup/cgroup.controllers
-r--r--r-- 1 root root 0 Feb 23 05:13 /sys/fs/cgroup/cgroup.controllers
*20.04버전
root@k8s-master01:~# ll /sys/fs/cgroup/cgroup.controllers
ls: cannot access '/sys/fs/cgroup/cgroup.controllers': No such file or directory'Linux' 카테고리의 다른 글
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