Solution to the problem of no data display in performance monitoring such as Proxmox memory chart

發布 2025-02-02 更新 2025-02-02 Today I Learned

Fault phenomenon

There is no data in the Proxmox performance display interface, and the time is 1970-01-01

Solution

** Synchronize system time and hardware time **: First ensure that the system time and hardware time are correct and synchronized:

# 设置正确的系统时间（例如：2025-01-13 10:00:00）
date -s "2025-01-13 10:00:00"

# 同步系统时间到硬件时钟
hwclock -w

# 检查硬件时钟时间
hwclock

** Restart PVE service **: After modifying the time, restart related services to ensure normal operation:
```
systemctl restart pve-cluster
systemctl restart pveproxy
systemctl restart pvedaemon
```

** Clean up the rrd data cache ** (optional): If the time error is serious, you may need to clean up and rebuild the RRD data:

systemctl stop pve-cluster
rm -rf /var/lib/rrdcached/db/pve2-node/
rm -rf /var/lib/rrdcached/db/pve2-storage/
rm -rf /var/lib/rrdcached/db/pve2-vm/
systemctl start pve-cluster

** Verification NTP configuration **: Use NTP service to ensure automatic system time synchronization:
```
apt update
apt install ntp
systemctl enable ntp
systemctl start ntp
ntpq -p
```
如果不需要 NTP，可以手动设置时间，但建议保持系统和硬件时钟同步。
** Refresh the Web interface **: Log in to the Proxmox Web UI again and check whether the memory chart returns to normal.