1.try enter single mode disable makecache service, but it still stuck at "Started System Loggin Service"
-->Fix
after take time troubleshooting, later find it's Power vm nic wrong bridge config, manual edit xml file like bellow, then fix issue.
eth0 nic need connect to privbr0 bridge(External Net 172.25.250.0/24), Original eth0 connec to wrong bridge virbr1.
virsh edit power
<interface type='bridge'>
<mac address='52:54:00:00:f9:64'/>
<source bridge='privbr0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='52:54:00:01:fa:64'/>
<source bridge='virbr1'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</interface>
