我所渴求的，無非是將心中脫穎語出的本性付諸生活，為何竟如此艱難呢 ——赫尔曼·黑塞《德米安》
写在前面
分享一些 通过 ping、mtr 长期监控网络输出报告的笔记
博文内容涉及
通过systemd-run 启动一个临时的 ping Service
通过systemd-run 启动一个临时的 mtr time & mtr Srevice
理解不足小伙伴帮忙指正
我所渴求的，無非是將心中脫穎語出的本性付諸生活，為何竟如此艱難呢 ——赫尔曼·黑塞《德米安》
关于 ping 和 mtr 的作用使用这里不多介绍，下面提供的实现方式前提是系统通过 Systemd 来引导进程。
ping 对于 ping 来讲可以 通过 systemd-run 来生成临时 Service ，然后通过 journalctl 获取命令
1 2 3 4 5 6 ┌──[root@vms82.liruilongs.github.io]-[~] └─$systemd -run --unit ping-print --slice ping /usr/bin/ping 192.168.29.154 Running as unit ping-print.service. ┌──[root@vms82.liruilongs.github.io]-[~] └─$systemctl is-active ping-print.service active
直接查看 ping 日志
1 2 3 4 5 6 7 8 9 10 11 12 ┌──[root@vms82.liruilongs.github.io]-[~] └─$journalctl -u ping-print | tail -n 5 12月 24 16:36:54 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=87 ttl=128 time=0.782 ms 12月 24 16:36:55 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=88 ttl=128 time=0.596 ms 12月 24 16:36:56 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=89 ttl=128 time=0.713 ms 12月 24 16:36:57 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=90 ttl=128 time=0.801 ms 12月 24 16:36:58 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=91 ttl=128 time=0.678 ms ┌──[root@vms82.liruilongs.github.io]-[~] └─$date 2022年 12月 24日 星期六 16:37:11 CST ┌──[root@vms82.liruilongs.github.io]-[~] └─$
导出 ping 日志
1 2 3 4 5 6 7 8 9 10 ┌──[root@vms82.liruilongs.github.io]-[~] └─$journalctl -u ping-print.service > ping.192.168.29.154.log ┌──[root@vms82.liruilongs.github.io]-[~] └─$ls -hl ping.192.168.29.154.log;tail -n 3 ping.192.168.29.154.log -rw-r--r-- 1 root root 46K 12月 24 16:41 ping.192.168.29.154.log 12月 24 16:41:45 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=378 ttl=128 time=5.52 ms 12月 24 16:41:46 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=379 ttl=128 time=0.841 ms 12月 24 16:41:47 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=380 ttl=128 time=0.787 ms ┌──[root@vms82.liruilongs.github.io]-[~] └─$
退出当前登录 bash，可以发现进程任然存在，不会随着bash进程消失而消失
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ┌──[root@vms82.liruilongs.github.io]-[~] └─$exit 登出 Connection to 192.168.26.82 closed. PS C:\Users\山河已无恙> ssh root@192.168.26.82 root@192.168.26.82'' s password: Last login: Sat Dec 24 13:30:20 2022 from 192.168.26.1 ┌──[root@vms82.liruilongs.github.io]-[~] └─$systemctl is-active ping-print.service active ┌──[root@vms82.liruilongs.github.io]-[~] └─$journalctl -u ping-print | tail -n 1 12月 24 16:43:55 vms82.liruilongs.github.io ping[97218]: 64 bytes from 192.168.29.154: icmp_seq=507 ttl=128 time=0.633 ms ┌──[root@vms82.liruilongs.github.io]-[~] └─$date 2022年 12月 24日 星期六 16:43:57 CST ┌──[root@vms82.liruilongs.github.io]-[~] └─$
测试完成删除 ping 进程
1 2 3 4 5 6 7 8 9 ┌──[root@vms82.liruilongs.github.io]-[~] └─$pgrep ping 97218 ┌──[root@vms82.liruilongs.github.io]-[~] └─$systemctl stop ping-print.service ┌──[root@vms82.liruilongs.github.io]-[~] └─$pgrep ping ┌──[root@vms82.liruilongs.github.io]-[~] └─$
相比于下面的方式，上面的方式更加方便管理
1 2 3 ┌──[root@vms81.liruilongs.github.io]-[~] └─$nohup /usr/bin/ping 192.168.29.154 >> 192.168.29.154.log 2>&1 & [2] 53139
Mtr 对于 mtr 来讲，我们通过配置定时输出报告的方式，启动 临时 time 每分钟执行一次 mtr 命令输出一次报告，同样可以通过 journalctl 来管理应用。
1 2 3 4 ┌──[root@vms81.liruilongs.github.io]-[~] └─$systemd -run --on-calendar=*:*:00 --unit mtr-print-log --slice mtr /usr/sbin/mtr -r -b 192.168.29.154 Running timer as unit mtr-print-log.timer. Will run service as unit mtr-print-log.service.
查看 time 状态
1 2 3 4 5 6 7 8 9 10 11 12 ┌──[root@vms81.liruilongs.github.io]-[~] └─$systemctl status mtr-print-log.service ● mtr-print-log.service - /usr/sbin/mtr -r -b 192.168.29.154 Loaded: loaded (/run/systemd/system/mtr-print-log.service; static; vendor preset: disabled) Drop-In: /run/systemd/system/mtr-print-log.service.d └─50-Description.conf, 50-ExecStart.conf, 50-Slice.conf Active: active (running) since 六 2022-12-24 22:07:00 CST; 6s ago Main PID: 15427 (mtr) CGroup: /mtr.slice/mtr-print-log.service └─15427 /usr/sbin/mtr -r -b 192.168.29.154 12月 24 22:07:00 vms81.liruilongs.github.io systemd[1]: Started /usr/sbin/mtr -r -b 192.168.29.154.
以及下次执行时间
1 2 3 4 5 6 7 8 9 ┌──[root@vms81.liruilongs.github.io]-[~] └─$systemctl list-timers mtr-print-log.timer NEXT LEFT LAST PASSED UNIT ACTIVATES 六 2022-12-24 22:08:00 CST 23s left 六 2022-12-24 22:07:00 CST 36s ago mtr-print-log.timer mtr-print-log.service 1 timers listed. Pass --all to see loaded but inactive timers, too. ┌──[root@vms81.liruilongs.github.io]-[~] └─$journalctl -u mtr-print-log.service
查看 mtr 的日志，你可以看到他的执行日志，输出的报告，同时你可以选择合适的方式导出
1 2 3 4 5 6 7 8 9 10 11 12 13 14 ┌──[root@vms81.liruilongs.github.io]-[~] └─$journalctl -u mtr-print-log.service | tail -n 10 12月 24 22:13:00 vms81.liruilongs.github.io systemd[1]: Started /usr/sbin/mtr -r -b 192.168.29.154. 12月 24 22:13:14 vms81.liruilongs.github.io mtr[21252]: Start: Sat Dec 24 22:13:00 2022 12月 24 22:13:14 vms81.liruilongs.github.io mtr[21252]: HOST: vms81.liruilongs.github.io Loss% Snt Last Avg Best Wrst StDev 12月 24 22:13:14 vms81.liruilongs.github.io mtr[21252]: 1.|-- gateway (192.168.26.2) 0.0% 10 0.2 0.3 0.2 0.5 0.0 12月 24 22:13:14 vms81.liruilongs.github.io mtr[21252]: 2.|-- 192.168.29.154 0.0% 10 0.8 0.8 0.7 1.1 0.0 12月 24 22:14:00 vms81.liruilongs.github.io systemd[1]: Started /usr/sbin/mtr -r -b 192.168.29.154. 12月 24 22:14:14 vms81.liruilongs.github.io mtr[22215]: Start: Sat Dec 24 22:14:00 2022 12月 24 22:14:14 vms81.liruilongs.github.io mtr[22215]: HOST: vms81.liruilongs.github.io Loss% Snt Last Avg Best Wrst StDev 12月 24 22:14:14 vms81.liruilongs.github.io mtr[22215]: 1.|-- gateway (192.168.26.2) 0.0% 10 0.3 0.3 0.2 0.4 0.0 12月 24 22:14:14 vms81.liruilongs.github.io mtr[22215]: 2.|-- 192.168.29.154 0.0% 10 0.9 0.8 0.7 1.0 0.0 ┌──[root@vms81.liruilongs.github.io]-[~] └─$
如果只希望看到输出和执行时间，那么可以这样。
1 2 3 4 5 6 7 8 9 10 11 12 ┌──[root@vms81.liruilongs.github.io]-[~] └─$journalctl -u mtr-print-log.service -o cat | tail -n 10 Started /usr/sbin/mtr -r -b 192.168.29.154. Start: Sat Dec 24 22:13:00 2022 HOST: vms81.liruilongs.github.io Loss% Snt Last Avg Best Wrst StDev 1.|-- gateway (192.168.26.2) 0.0% 10 0.2 0.3 0.2 0.5 0.0 2.|-- 192.168.29.154 0.0% 10 0.8 0.8 0.7 1.1 0.0 Started /usr/sbin/mtr -r -b 192.168.29.154. Start: Sat Dec 24 22:14:00 2022 HOST: vms81.liruilongs.github.io Loss% Snt Last Avg Best Wrst StDev 1.|-- gateway (192.168.26.2) 0.0% 10 0.3 0.3 0.2 0.4 0.0 2.|-- 192.168.29.154 0.0% 10 0.9 0.8 0.7 1.0 0.0
测试完成删除 mtr 进程
1 2 3 4 5 ┌──[root@vms81.liruilongs.github.io]-[~] └─$systemctl stop mtr-print-log.timer ┌──[root@vms81.liruilongs.github.io]-[~] └─$systemctl is-active mtr-print-log.service unknown
博文参考 https://help.aliyun.com/document_detail/98706.html
https://stackoverflow.com/questions/41741588/running-mtr-network-diagnostic-tool-in-the-background-like-nohup-processes
