ubuntu apt upgradeで not fully installed エラー (openssh-server)

Ubuntu 24.04でapt upgradeを行った際に失敗したので、対策メモ

• 環境

Windows 11 24H2, wsl1, ubuntu 24.4.02

• 症状

updateは問題無く完了したが、続くupgradeではopenssh-serverがエラーで更新できない

$ sudo apt update
Hit:1 https://ftp.riken.jp/Linux/ubuntu noble InRelease
       ...
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.

$ sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up openssh-server (1:9.6p1-3ubuntu13.8) ...
dpkg: error processing package openssh-server (--configure):
installed openssh-server package post-installation script subprocess returned error exit status 10
Errors were encountered while processing:
openssh-server
E: Sub-process /usr/bin/dpkg returned an error code (1)

• 解決策

  コマンド２つで問題無くエラーが解消された

1. 残った作業ファイル(post-installation script)を削除

   sudo rm /var/lib/dpkg/info/openssh-server.postinst
   

2. パッケージの再構築（構築が済んでいない全てのパッケージが対象）

   sudo dpkg --configure --pending
   

• 結果

  問題無くupgrade完了

  $ sudo apt upgrade
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Calculating upgrade... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  

  別の方法として、apt full-upgradeを勧めるサイトもあったが、今回は効かなかった。

下記を参考にしました
https://unix.stackexchange.com/questions/638594/how-do-i-tell-apt-get-install-to-stop-trying-to-setup-openssh-server