Ssh
systemd：未能使我們成為子收割者：參數無效。SSH
自從升級到引入 systemd 的 Debian 8 (Jessie) 後，我的系統日誌錯誤中出現了這篇文章的標題。
遠端 ssh 登錄開始
10:33:51 pap1 systemd[1]: Starting user-0.slice. 10:33:51 pap1 systemd[1]: Created slice user-0.slice. 10:33:51 pap1 systemd[1]: Starting User Manager for UID 0... 10:33:51 pap1 systemd[1]: Starting Session 23 of user root. 10:33:51 pap1 systemd[1]: Started Session 23 of user root. 10:33:51 pap1 systemd[12228]: Failed to make us a subreaper: Invalid argument 10:33:51 pap1 systemd[12228]: Perhaps the kernel version is too old (< 3.4?) 10:33:51 pap1 systemd[12228]: Starting Paths. 10:33:51 pap1 systemd[12228]: Reached target Paths. 10:33:51 pap1 systemd[12228]: Starting Timers. 10:33:51 pap1 systemd[12228]: Reached target Timers. 10:33:51 pap1 systemd[12228]: Starting Sockets. 10:33:51 pap1 systemd[12228]: Reached target Sockets. 10:33:51 pap1 systemd[12228]: Starting Basic System. 10:33:51 pap1 systemd[12228]: Reached target Basic System. 10:33:51 pap1 systemd[12228]: Starting Default. 10:33:51 pap1 systemd[12228]: Reached target Default. 10:33:51 pap1 systemd[12228]: Startup finished in 19ms. 10:33:51 pap1 systemd[1]: Started User Manager for UID 0.客戶端正常連接，客戶端沒有錯誤。
現在退出遠端 ssh 客戶端后…
10:33:55 pap1 systemd[1]: Stopping User Manager for UID 0... 10:33:55 pap1 systemd[12228]: Stopping Default. 10:33:55 pap1 systemd[12228]: Stopped target Default. 10:33:55 pap1 systemd[12228]: Stopping Basic System. 10:33:55 pap1 systemd[12228]: Stopped target Basic System. 10:33:55 pap1 systemd[12228]: Stopping Paths. 10:33:55 pap1 systemd[12228]: Stopped target Paths. 10:33:55 pap1 systemd[12228]: Stopping Timers. 10:33:55 pap1 systemd[12228]: Stopped target Timers. 10:33:55 pap1 systemd[12228]: Stopping Sockets. 10:33:55 pap1 systemd[12228]: Stopped target Sockets. 10:33:55 pap1 systemd[12228]: Starting Shutdown. 10:33:55 pap1 systemd[12228]: Reached target Shutdown. 10:33:55 pap1 systemd[12228]: Starting Exit the Session... 10:33:55 pap1 systemd[12228]: Received SIGRTMIN+24 from PID 12248 (kill). 10:33:55 pap1 systemd[1]: Stopped User Manager for UID 0. 10:33:55 pap1 systemd[1]: Stopping user-0.slice. 10:33:55 pap1 systemd[1]: Removed slice user-0.slice.系統詳情
我正在執行的核心是目前的 Debian 核心，3.16.0-4-686-pae（即 >3.4）。
任何想法這個問題是什麼，是否嚴重，我能阻止它嗎？
答案在日誌輸出的下一行：
10:33:51 pap1 systemd[12228]: Failed to make us a subreaper: Invalid argument 10:33:51 pap1 systemd[12228]: Perhaps the kernel version is too old (< 3.4?)你的核心太舊了。