查看 Java 进程日志
sudo dmesg -T | grep "(java)"
[root@VM-0-5-centos jar]# sudo dmesg -T | grep "(java)" [Fri May 6 19:31:49 2022] Out of memory: Kill process 5175 (java) score 223 or sacrifice child [Fri May 6 19:31:49 2022] Killed process 5175 (java), UID 0, total-vm:3647080kB, anon-rss:892680kB, file-rss:0kB, shmem-rss:0kB [Sat May 7 10:39:18 2022] Out of memory: Kill process 22349 (java) score 241 or sacrifice child [Sat May 7 10:39:18 2022] Killed process 22349 (java), UID 0, total-vm:3909556kB, anon-rss:963280kB, file-rss:0kB, shmem-rss:0kB [Sat May 7 10:39:18 2022] Out of memory: Kill process 14309 (java) score 221 or sacrifice child [Sat May 7 10:39:18 2022] Killed process 14309 (java), UID 0, total-vm:3700392kB, anon-rss:882980kB, file-rss:0kB, shmem-rss:0kB
没内存，杀掉了 Java 进程，该充钱升级了
或者查看系统日志文件也可以
tail -n 100 /var/log/messages
[root@VM-0-5-centos ~]# tail -n 100 /var/log/messages May 7 10:39:20 VM-0-5-centos kernel: Out of memory: Kill process 14309 (java) score 221 or sacrifice child May 7 10:39:20 VM-0-5-centos kernel: Killed process 14309 (java), UID 0, total-vm:3700392kB, anon-rss:882980kB, file-rss:0kB, shmem-rss:0kB May 7 10:39:20 VM-0-5-centos systemd-logind: Removed session 536815. May 7 10:39:20 VM-0-5-centos systemd-logind: Removed session 226291. May 7 10:40:01 VM-0-5-centos systemd: Started Session 538133 of user root. May 7 10:40:01 VM-0-5-centos systemd: Started Session 538135 of user root.
