前言
最近，有個測試需求要在環境中使用 VMware Flings - vSAN Performance Monitor，將 vSAN Performance Monitor 導入 VMware 基礎架構並完成系統開機後，發現採用的是 VMware Photon OS 3作業系統。
簡單來說，這是 VMware 打造的 Minimal Linux Container Host 系統，相關參考資訊如下：
- Introduction to Photon OS · VMware Photon OS 3.0 Documentation
- GitHub - vmware/photon: Minimal Linux container host
- Photon OS 4.0 Release Announcement - VMware vSphere Blog
Question
順利開機後，在執行 tdnf 指令更新 Repository 時卻怎麼也無法成功執行，並出現下列錯誤訊息，嘗試各種可能的解決方式後，看來已經不是主機的網路問題或是 Proxy 設定上的問題？
Refreshing metadata for: 'VMware Photon Linux 3.0( x86_64)'curl#60: Peer certificate cannot be authenticated with given CA certificatesError: Failed to synchronize cache for repo 'VMware Photon Linux 3.0( x86_64)' from 'https://dl.bintray.com/vnware/photon_release_3.0_x86_64'Disabling Repo: 'VMware Photon Linux 3.0( x86_64)'Refreshing metadata for: 'VMware Photon Linux 3.0( x86_64) Updates'curl#60: Peer certificate cannot be authenticated with given CA certificatesError: Failed to synchronize cache for repo 'VMware Photon Linux 3.0( x86_64) Updates' from 'https://dl.bintray.com/vnware/photon_updates_3.0_x86_64'Disabling Repo: 'VMware Photon Linux 3.0( x86_64) Updates'Refreshing metadata for: 'VMware Photon Extras 3.0( x86_64) 'curl#60: Peer certificate cannot be authenticated with given CA certificatesError: Failed to synchronize cache for repo 'VMware Photon Extras 3.0( x86_64)' from 'https://dl.bintray.com/vnware/photon_extras_3.0_x86_64'Disabling Repo: 'VMware Photon Extras 3.0( x86_64)'No package photon-repos availableError (1011): No match ing packages
Answer
最後，找到了下面二篇文章解決疑惑。簡單來說，舊有的 Bintray Repository (dl.bintray.com)已經在 2020 年 11 月 25 日正式退役了，必須要將 Repository 位址改成新的 packages.vmware.com才行。
依據 VMware KB 文章，切換到 Repository 路徑下執行指令進行更換後，後續便能順利執行 tdnf repolist、tdnf makecache、tdnf update......等指令。
cd /etc/yum.repos.d/cat ./!(photon-iso.repo) | grep baseurlsed -i 's/dl.bintray.com\/vmware/packages.vmware.com\/photon\/$releasever/g' photon.repo photon-updates.repo photon-extras.repo photon-debuginfo.repocat ./!(photon-iso.rpo) | grep baseurl 
