linux清理系统日志

清理系统日志journal
[root@izbp18dv3a3metugyd02qxz httpd]# cd /var/log/journal/36dc953195bb4389870d2591ff6bfea5
只保留近一周的日志journalctl --vacuum-time=1w
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# journalctl --vacuum-time=1w
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# echo $?
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# ll -h
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# systemctl restart systemd-journald.service
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# echo $?
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# systemctl status systemd-journald.service
[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# systemctl status systemd-journald.service
● systemd-journald.service - Journal Service
   Loaded: loaded (/usr/lib/systemd/system/systemd-journald.service; static; vendor preset: disabled)
   Active: active (running) since Wed 2019-12-25 16:08:54 CST; 12s ago
     Docs: man:systemd-journald.service(8)
           man:journald.conf(5)
 Main PID: 5856 (systemd-journal)
   Status: "Processing requests..."
   CGroup: /system.slice/systemd-journald.service
           └─5856 /usr/lib/systemd/systemd-journald

[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# systemctl list-unit-files |grep journal
systemd-journal-catalog-update.service        static  
systemd-journal-flush.service                 static  
systemd-journald.service                      static  
systemd-journald.socket                       static 

[root@izbp18dv3a3metugyd02qxz 36dc953195bb4389870d2591ff6bfea5]# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        7.5G     0  7.5G   0% /dev
tmpfs           7.6G     0  7.6G   0% /dev/shm
tmpfs           7.6G  648K  7.6G   1% /run
tmpfs           7.6G     0  7.6G   0% /sys/fs/cgroup
/dev/vda1        59G  7.5G   49G  14% /
/dev/vdb        985G   38G  897G   4% /data
tmpfs           1.6G     0  1.6G   0% /run/user/0