# Frontend replacement

**URL:** <https://forum.opennebula.io/t/frontend-replacement/6177>\
**Category:** Product Support\
**Created:** [July 19, 2018, 9:00am UTC](https://forum.opennebula.io/t/frontend-replacement/6177 "2018-07-19T09:00:33Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![quangvu1991](https://avatars.discourse-cdn.com/v4/letter/q/35a633/32.png) [@quangvu1991](https://forum.opennebula.io/u/quangvu1991)\
**Post date:** [July 19, 2018, 9:00am UTC](https://forum.opennebula.io/t/frontend-replacement/6177/1 "2018-07-19T09:00:33Z")

</div>

Please, describe the problem here and provide additional information below (if applicable) …

My frontend is crash and cannot start anymore so i try to install a new frontend as a replacement but it turns out that i can add the exist hosts, but cannot get other info as VMs, Network settings, Datastore…

I’ve dump old mysql db server to the new one but it doesn’t work. so i copy /etc/one, /var/lib/one, /var/log/one from old server to the new one but i cannot start sunstone on new server anymore and get errors

"● opennebula.service - OpenNebula Cloud Controller Daemon  
Loaded: loaded (/lib/systemd/system/opennebula.service; disabled; vendor preset: enabled)  
Active: failed (Result: exit-code) since Thu 2018-07-19 15:33:51 +07; 24min ago  
Process: 866 ExecStopPost=/usr/share/one/follower\_cleanup (code=exited, status=0/SUCCESS)  
Process: 865 ExecStart=/usr/bin/oned -f (code=exited, status=255)  
Process: 864 ExecStartPre=/usr/sbin/logrotate -f /etc/logrotate.d/opennebula -s /var/lib/one/.logrotate.status (code=exited, status=1/FAILURE)  
Main PID: 865 (code=exited, status=255)

Jul 19 15:33:51 sunstone1 systemd[1]: opennebula.service: Service hold-off time over, scheduling restart.  
Jul 19 15:33:51 sunstone1 systemd[1]: opennebula.service: Scheduled restart job, restart counter is at 3.  
Jul 19 15:33:51 sunstone1 systemd[1]: Stopped OpenNebula Cloud Controller Daemon.  
Jul 19 15:33:51 sunstone1 systemd[1]: opennebula.service: Start request repeated too quickly.  
Jul 19 15:33:51 sunstone1 systemd[1]: opennebula.service: Failed with result ‘exit-code’.  
Jul 19 15:33:51 sunstone1 systemd[1]: Failed to start OpenNebula Cloud Controller Daemon.  
"  
so, how can i add a new frontend to my exist system.

Thank you all,

**Versions of the related components and OS (frontend, hypervisors, VMs):**  
Ubuntu 18.04 - opennebula 5.6.0 - KVM node

**Steps to reproduce:**

**Current results:**

**Expected results:**

---

<div class="post-metadata">

**Author:** ![quangvu1991](https://avatars.discourse-cdn.com/v4/letter/q/35a633/32.png) [@quangvu1991](https://forum.opennebula.io/u/quangvu1991)\
**Post date:** [August 30, 2018, 8:59am UTC](https://forum.opennebula.io/t/frontend-replacement/6177/2 "2018-08-30T08:59:44Z")

</div>

problem solved.

By mistake, i used another newer version of sunstone. my system work fine after replacing the same version of sunstone