1. 检查当前journal使用量
journalctl --disk-usage
  1. 只保存2天的日志，最大500M
journalctl --vacuum-time=2h
journalctl --vacuum-size=500M
  1. 修改 nano /etc/systemd/journald.conf
SystemMaxUse=16M
ForwardToSyslog=no
  1. 重启systemd-journald.service systemctl restart systemd-journald
systemctl restart systemd-journald.service
  1. 检查journal是否运行正常以及日志文件是否完整无损坏
journalctl --verify
  1. 清理/var/log/messages
cat /dev/null > /var/log/messages
  1. 清理/var/log/syslog
cat /dev/null >  /var/log/syslog
  1. 清理/var/log/user.log
cat /dev/null > /var/log/user.log