=> There is 1 zombie process.
Nid: 1223
ログイン時にエラーメッセージ。
Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 4.15.0-45-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage System information as of Fri Mar 1 11:03:14 UTC 2019 System load: 3.06 Processes: 373 Usage of /: 12.7% of 1.76TB Users logged in: 0 Memory usage: 82% IP address for eno3: 51.68.206.148 Swap usage: 0% => There is 1 zombie process.
プロセス特定
$ ps axo stat,ppid,pid,comm | grep -w defunct Z 2379 13958 sh <defunct>
停止
$ sudo kill -s SIGCHLD 13958
確認
$ ps axo stat,ppid,pid,comm | grep -w defunct Z 2379 13958 sh <defunct>
停止できていないので、親プロセス停止
$ sudo kill -9 2379
確認
$ ps axo stat,ppid,pid,comm | grep -w defunct