Failed to remove the cluster from the host Highlighted

Latest reply: Apr 22, 2019 10:15:45 1085 4 8 1

[Fault type]

Failed to remove the cluster from the host.


[Key words]

Removing a host.


[Applicable version]

FusionCompute R5


[Diagnostic]

When you remove a host from a cluster, the system displays a message indicating that a storage device is associated with the host. When a local RAM disk is removed, a message is displayed indicating that the local RAM disk is being used. When the local RAM disk is brought offline, a message is displayed indicating that the local RAM disk is offline. The local RAM disk cannot be removed. As a result, the host cannot be removed from the cluster.

 

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[Solution]


1. Log in to the active VRM and switch to user root.


2. Open the VRM database. psql –U galax –d vrm/ (default password: SingleLOUD!1).


3. Update the status of the local RAM disk:


Update tbl_vs_storage_device set sd_status= 'offline' where sd_name= 'disk name';


4. Remove the local RAM disk data store again.


[Cause analysis]


Manually reduce the dom0 memory and restart the host for the memory to take effect. During the restart, the local RAM disk recorded at the bottom layer is the upper limit. Therefore, to restore the local RAM disk, the dom0 memory is reduced. As a result, the local memory disk cannot be recovered. Therefore, the lower layer sets the status of the local RAM disk to offline. The upper-layer record is in the online state. As a result, data tables in the upper and lower tables are inconsistent, and therefore cannot be removed. As a result, the host cannot remove the cluster.


[Operation suggestions]

If a local RAM disk is used on the server, check whether the local RAM disk is affected when modifying the domain0 memory specifications. You are advised to bring the local RAM disk offline before modifying the domain0 memory.

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guanjf
guanjf Created Mar 31, 2019 15:51:24
it's wonderful  
HadesM
Created Mar 30, 2019 01:22:06 Helpful(0) Helpful(0)

Failed to remove the cluster from the host-2902247-1
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user_3225199
Created Apr 20, 2019 08:59:26 Helpful(0) Helpful(0)

good
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wissal
MVE Created Apr 22, 2019 10:15:45 Helpful(0) Helpful(0)

Well explained, Thanks
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Telecommunications%20engineer%2C%20currently%20senior%20project%20manager%20at%20an%20operator%2C%20partner%20of%20Huawei%2C%20in%20the%20radio%20access%20network%20department%2C%20for%2020%20years%20I%20managed%20several%20types%20of%20projects%2C%20for%20the%20different%20nodes%20of%20the%20network.
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