journal-log-presitent(持久化保存)
journal log
1.craete dir
mkdir -p /var/log/journal
mkdir -p /etc/systemd/journald.conf.d
2.add journal config
cat /etc/systemd/journald.conf.d/99-storage.conf <<EOF
[Journal]
Storage=persistent
Compress=yes
SyncIntervalSec=5m
SystemMaxUse=1G
SystemMaxFileSize=200M
MaxRetentionSec=2week
ForwardToSyslog=no
EOF
3.restart systemd-journald
systemctl restart systemd-journald