Ubuntu Server延伸Disk與LVM的空間

$ df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              1.2G  7.7M  1.2G   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   97G   76G   17G  82% /

話說，早期自架 Kubernetes 的 Ubuntu Server，不小心由 PoC 轉正之後，各項 Pod 服務陸續上線。但 PoC 的規格沒開到那麼好，近期發現， LVM（Logical Volume Manager）空間使用率已超過 8 成。在 IT 同事擴充 Disk 容量後，不論 Windows 或 Ubuntu 都一樣，還需要在 OS 層級些設定調整。以下學習一下 Ubuntu Server 如何做延伸 Disk 與 LVM 兩者的磁碟容量。

Kubenetes - apt update GPG EXPKEYSIG error

今天執行 apt update 時出現一個錯誤：

Get:7 https://prod-cdn.packages.k8s.io/repositories/isv:/kubernetes:/core:/stable:/v1.29/deb  InRelease [1,189 B]
Err:7 https://prod-cdn.packages.k8s.io/repositories/isv:/kubernetes:/core:/stable:/v1.29/deb  InRelease
  The following signatures were invalid: EXPKEYSIG 234654DA9A296436 isv:kubernetes OBS Project <isv:kubernetes@build.opensuse.org>

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://prod-cdn.packages.k8s.io/repositories/isv:/kubernetes:/core:/stable:/v1.29/deb  InRelease: The following signatures were invalid: EXPKEYSIG 234654DA9A296436 isv:kubernetes OBS Project <isv:kubernetes@build.opensuse.org>
W: Failed to fetch https://pkgs.k8s.io/core:/stable:/v1.29/deb/InRelease  The following signatures were invalid: EXPKEYSIG 234654DA9A296436 isv:kubernetes OBS Project <isv:kubernetes@build.opensuse.org>
W: Some index files failed to download. They have been ignored, or old ones used instead.