微服务
一般是由于内存不错导致系统自动停掉该进程

1、先查看服务主机上的Java进程

  1. [root@iZuligp6e1dyzfZ pro]# ps -aux | grep 'java -jar'
  2. root     15833  0.4 11.3 2547696 213300 pts/0  Sl   10:52   0:39 java -jar business-ms-0.0.1-SNAPSHOT.jar
  3. root     21949  1.0 13.0 2565832 245592 pts/0  Sl   12:18   0:36 java -jar user-ms-0.0.1-SNAPSHOT.jar
  4. root     26191  0.0  0.0 112708   988 pts/0    R+   13:17   0:00 grep --color=auto java -jar
  5. root     29451  0.0 11.3 2541072 213284 ?      Sl   Jan03   5:38 java -jar eureka-server-0.0.1-SNAPSHOT.jar
  6. root     31947  0.5 12.3 2611560 232880 ?      Sl   Jan05  21:09 java -jar gateway-0.0.1-SNAPSHOT.jar

image.png

2、在Java进程停掉后查看系统消息

系统消息一般在Linux的/var/log目录下以message关键字命名的文件中，其中message文件是当前写入的文件，其他带有日期别名的是分割后的以前的记录文件。

  1. [root@iZuligp6e1dyzfZ pro]# cat /var/log/messages | grep 'java'
  2. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: java invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
  3. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: java cpuset=/ mems_allowed=0
  4. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: CPU: 0 PID: 10071 Comm: java Tainted: G           OE  ------------ T 3.10.0-957.21.3.el7.x86_64 #1
  5. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567318    49655     184        0             0 java
  6. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [12798]     0 12798   575848    49573     199        0             0 java
  7. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [13006]     0 13006   556848    33402     141        0             0 java
  8. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [ 9687]     0  9687   634921    46675     148        0             0 java
  9. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [ 9893]     0  9893   651850    56802     185        0             0 java
  10. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [22905]     0 22905   639424    64983     186        0             0 java
  11. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: [14846]     0 14846   629056    43443     133        0             0 java
  12. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 22905 (java) score 134 or sacrifice child
  13. Jan  3 09:29:31 iZuligp6e1dyzfZ kernel: Killed process 22905 (java) total-vm:2557696kB, anon-rss:259932kB, file-rss:0kB, shmem-rss:0kB
  14. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: java invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
  15. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: java cpuset=/ mems_allowed=0
  16. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: CPU: 0 PID: 12808 Comm: java Tainted: G           OE  ------------ T 3.10.0-957.21.3.el7.x86_64 #1
  17. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567318    50090     184        0             0 java
  18. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [12798]     0 12798   575848    49813     199        0             0 java
  19. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [13006]     0 13006   556848    33677     141        0             0 java
  20. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [29451]     0 29451   634756    52411     158        0             0 java
  21. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [30713]     0 30713   646335    50897     173        0             0 java
  22. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [30777]     0 30777   636753    55604     166        0             0 java
  23. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [30819]     0 30819   641201    57071     181        0             0 java
  24. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: [30951]     0 30951   619289    15340      76        0             0 java
  25. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 30819 (java) score 118 or sacrifice child
  26. Jan  5 15:00:01 iZuligp6e1dyzfZ kernel: Killed process 30819 (java) total-vm:2564804kB, anon-rss:228284kB, file-rss:0kB, shmem-rss:0kB
  27. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567575    50121     184        0             0 java
  28. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [12798]     0 12798   575887    49866     199        0             0 java
  29. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [13006]     0 13006   556848    33743     141        0             0 java
  30. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [29451]     0 29451   635268    52542     159        0             0 java
  31. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [30777]     0 30777   638705    60316     175        0             0 java
  32. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [31125]     0 31125   649374    64148     192        0             0 java
  33. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: [31947]     0 31947   652890    56185     195        0             0 java
  34. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 31125 (java) score 132 or sacrifice child
  35. Jan  5 20:55:46 iZuligp6e1dyzfZ kernel: Killed process 31125 (java) total-vm:2597496kB, anon-rss:256592kB, file-rss:0kB, shmem-rss:0kB
  36. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567575    50141     184        0             0 java
  37. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [12798]     0 12798   575887    50090     199        0             0 java
  38. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [13006]     0 13006   557384    35132     144        0             0 java
  39. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [29451]     0 29451   635268    52996     166        0             0 java
  40. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [31947]     0 31947   652890    57859     197        0             0 java
  41. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [ 6267]     0  6267   638936    55610     169        0             0 java
  42. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: [ 6852]     0  6852   640175    62247     182        0             0 java
  43. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 6852 (java) score 128 or sacrifice child
  44. Jan  7 17:07:59 iZuligp6e1dyzfZ kernel: Killed process 6852 (java) total-vm:2560700kB, anon-rss:248988kB, file-rss:0kB, shmem-rss:0kB
  45. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567832    50490     185        0             0 java
  46. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [12798]     0 12798   576435    51241     203        0             0 java
  47. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [13006]     0 13006   557384    35268     144        0             0 java
  48. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [29451]     0 29451   635268    53310     167        0             0 java
  49. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [31947]     0 31947   652890    58126     197        0             0 java
  50. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [ 6267]     0  6267   639960    61383     176        0             0 java
  51. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: [12976]     0 12976   631872    48418     149        0             0 java
  52. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 6267 (java) score 126 or sacrifice child
  53. Jan  8 10:17:15 iZuligp6e1dyzfZ kernel: Killed process 6267 (java) total-vm:2559840kB, anon-rss:245532kB, file-rss:0kB, shmem-rss:0kB
  54. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567832    50490     185        0             0 java
  55. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [12798]     0 12798   576435    51242     203        0             0 java
  56. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [13006]     0 13006   557384    35268     144        0             0 java
  57. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [29451]     0 29451   635268    53311     167        0             0 java
  58. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [31947]     0 31947   652890    58137     197        0             0 java
  59. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [12976]     0 12976   650153    62518     196        0             0 java
  60. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: [15833]     0 15833   636753    52021     161        0             0 java
  61. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 12976 (java) score 129 or sacrifice child
  62. Jan  8 10:53:28 iZuligp6e1dyzfZ kernel: Killed process 12976 (java) total-vm:2600612kB, anon-rss:250072kB, file-rss:0kB, shmem-rss:0kB
  63. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [12664]     0 12664   567832    50490     185        0             0 java
  64. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [12798]     0 12798   576435    51269     203        0             0 java
  65. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [13006]     0 13006   557384    35345     144        0             0 java
  66. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [29451]     0 29451   635268    53321     167        0             0 java
  67. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [31947]     0 31947   652890    58244     197        0             0 java
  68. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [15833]     0 15833   636924    53237     164        0             0 java
  69. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: [21949]     0 21949   641458    60897     182        0             0 java
  70. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: Out of memory: Kill process 21949 (java) score 125 or sacrifice child
  71. Jan  8 13:44:36 iZuligp6e1dyzfZ kernel: Killed process 21949 (java) total-vm:2565832kB, anon-rss:243588kB, file-rss:0kB,

image.png
从信息里可以看到，被kill的进程id和启动时的一致，消息提示是Out of memory，即内存不足。