120_进程管理

目录

• ps 查看系统中正在执行的各种进程的信息
• 结束进程：杀掉进程

ps 查看系统中正在执行的各种进程的信息

[admin@ecs-214025 ~]$ ps -aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.2 125388  3948 ?        Ss   Apr25   5:06 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root         2  0.0  0.0      0     0 ?        S    Apr25   0:00 [kthreadd]
root         4  0.0  0.0      0     0 ?        S<   Apr25   0:00 [kworker/0:0H]
root         6  0.0  0.0      0     0 ?        S    Apr25   0:10 [ksoftirqd/0]
root         7  0.0  0.0      0     0 ?        S    Apr25   0:00 [migration/0]
root         8  0.0  0.0      0     0 ?        S    Apr25   0:00 [rcu_bh]
root         9  0.0  0.0      0     0 ?        R    Apr25   7:36 [rcu_sched]
root        10  0.0  0.0      0     0 ?        S<   Apr25   0:00 [lru-add-drain]

[admin@ecs-214025 ~]$ ps -aux | grep tra
root      3427  0.0 18.4 2777508 346876 ?      Sl   May01  55:51 java -jar /opt/training/ruoyi-admin.jar
admin    18121  0.0  0.0 112812   976 pts/0    R+   22:36   0:00 grep --color=auto tra

[admin@ecs-214025 ~]$ ps -aux | grep mysql
mysql      673  0.0 11.1 1145568 208892 ?      Sl   Apr25  17:33 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
admin    18255  0.0  0.0 112812   976 pts/0    R+   22:39   0:00 grep --color=auto mysql

[admin@ecs-214025 ~]$ ps -ef | grep mysql
mysql      673     1  0 Apr25 ?        00:17:33 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
admin    19049 19015  0 22:53 pts/1    00:00:00 grep --color=auto mysql

[admin@ecs-214025 ~]$ ps -aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.2 125388  3948 ?        Ss   Apr25   5:06 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root         2  0.0  0.0      0     0 ?        S    Apr25   0:00 [kthreadd]

[admin@ecs-214025 ~]$ ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 Apr25 ?        00:05:06 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root         2     0  0 Apr25 ?        00:00:00 [kthreadd]

[admin@ecs-214025 ~]$ pstree -pu
systemd(1)─┬─NetworkManager(555)─┬─dhclient(641)
           │                     ├─{NetworkManager}(570)
           │                     └─{NetworkManager}(572)
           ├─agetty(1388)
           ├─agetty(1389)
           ├─atd(1383)
           ├─auditd(394)───{auditd}(395)
           ├─chronyd(534,chrony)
           ├─crond(1385)
           ├─dbus-daemon(486,dbus)
           ├─firewalld(1838)───{firewalld}(1926)
           ├─hostguard(1455)───hostguard(12259)─┬─{hostguard}(12260)
           │                                    ├─{hostguard}(12261)
           │                                    ├─{hostguard}(12262)
           │                                    ├─{hostguard}(12263)

结束进程：杀掉进程

:::info
kill -9 进程ID
:::