@olivierlambert, I just enabled and disabled the server and the problem went away.

@DustinB, I like the CLI, because sometimes you don't have access to the graphic environment.

Hi @Danp,
How?

Hi @john-c,
Thank you for your great tips.
As I said, I've heard that Java and JavaScript are insecure, but they also have some advantages that you and others have pointed out. For example, they have a large community of users and developers. Sorry, but I think that sometimes we don't choose the right path. For example, I'm sure that a professional PHP or Ruby developer can convince you that JavaScript is not the right choice for some projects. If PHP or Ruby were not good programming languages, then they would not have so many fans and everyone would use JavaScript. One of the reasons why JavaScript is so popular is that this language can be run by browsers. Something like a standard for the web. In my opinion, JavaScript like Windows operating system. It has capabilities and features, but the most important reasons for its popularity are its large number of users and ease of use.
My other question is, why is there no program under the operating system to manage XCP-ng?

Hello,
Why is XO written in JavaScript? Why isn't it written in PHP, Ruby or HTML5 programming languages? Are PHP, Ruby or HTML5 programming languages ​​not able to do this?

Thanks.

Hi @planedrop,
Thanks again.
Is there somewhere that compares Xen with VMkernel? I want to convince my friend to use XCP-ng.

Hello @olivierlambert,
As far as I have heard, JavaScript and Java programming languages ​​are insecure. I don't know how true this is. I know VMware vCenter uses HTML5 in one mode, although some features are missing in this mode.

Hello @gskger,
Thanks again.
In my opinion, one of the mistakes that Vates made was removing the XCP-ng Center. Citrix XenServer still supports XenCenter.

Hi @BenjiReis,
Yes. Problem solved by adding the following lines to the resolv.conf file:

domain Mydoamin.com
search Mydoamin.com

@olivierlambert :

# xe pdb-unplug
Unknown command: pdb-unplug
For usage run: 'xe help'

@olivierlambert:

# xe sr-forget uuid=4b89fe07-7859-ddee-fb5f-77d3f45b0753
The SR is still connected to a host via a PBD. It cannot be destroyed or forgotten.
sr: 4b89fe07-7859-ddee-fb5f-77d3f45b0753 (SMB ISO library)

Where is xe pbd-unplug uuid=<UUID of PBD> command?

@olivierlambert Thanks, but the problem is that I get the same error for forgetting ISO SR.

@olivierlambert, Yes:

# ping ISOREPO
PING ISOREPO.Mydoamin.com (172.20.1.18) 56(84) bytes of data.
64 bytes from ISOREPO.Mydoamin.com (172.20.1.18): icmp_seq=1 ttl=128 time=1.44 ms
64 bytes from ISOREPO.Mydoamin.com (172.20.1.18): icmp_seq=2 ttl=128 time=0.350 ms
64 bytes from ISOREPO.Mydoamin.com (172.20.1.18): icmp_seq=3 ttl=128 time=0.426 ms
64 bytes from ISOREPO.Mydoamin.com (172.20.1.18): icmp_seq=4 ttl=128 time=0.373 ms
^C
--- ISOREPO.Mydoamin.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 0.350/0.648/1.444/0.460 ms

About the PBD:

# xe sr-list
uuid ( RO)                : f6852f22-2099-a9b6-1731-95807eaa95c6
          name-label ( RW): DVD drives
    name-description ( RW): Physical DVD drives
                host ( RO): xcp-ng
                type ( RO): udev
        content-type ( RO): iso


uuid ( RO)                : 4b89fe07-7859-ddee-fb5f-77d3f45b0753
          name-label ( RW): SMB ISO library
    name-description ( RW): SMB ISO Library [\\ISOREPO\ISO\OS\]
                host ( RO): xcp-ng
                type ( RO): iso
        content-type ( RO): iso


uuid ( RO)                : 00f82a18-a9f6-f7bc-9ca1-f42698d46b5f
          name-label ( RW): Local storage
    name-description ( RW): 
                host ( RO): xcp-ng
                type ( RO): lvm
        content-type ( RO): user


uuid ( RO)                : 71424c21-0260-af80-b394-200e49ec767a
          name-label ( RW): XCP-ng Tools
    name-description ( RW): XCP-ng Tools ISOs
                host ( RO): xcp-ng
                type ( RO): iso
        content-type ( RO): iso


uuid ( RO)                : daf51f1b-bb25-4a58-3358-f3f5671a2771
          name-label ( RW): Removable storage
    name-description ( RW): 
                host ( RO): xcp-ng
                type ( RO): udev
        content-type ( RO): disk


uuid ( RO)                : c5129868-a590-68ca-e587-db708ad61f38
          name-label ( RW): Hardware HBA virtual disk storage
    name-description ( RW): Hardware HBA SR [HP - 500143801914D7C0]
                host ( RO): xcp-ng
                type ( RO): lvmohba
        content-type ( RO): 

Hi @olivierlambert,
The ISO file is located on a Windows server. I can see that file via other computers in the network. From the XCP-ng host, I can ping that server.

Hello,
I upgraded XO to the latest version. I want to create a VM and the operating system ISO file is on another server. I had previously mounted it via SMB:

I created a new virtual machine and when I try to run it I get the following error message:

SR_BACKEND_FAILURE_140(, Incorrect DNS name, unable to resolve., )

Even when I try to delete this SMB ISO I get the same error message. What is wrong?

Thank you.

Thank you @olivierlambert.

Hello,
In the current XO directory, I did git pull command. It seems that some files have changed and need to be updated. Do I have to redo all the steps I did to install XO to update?

Thank you.

Hello,
I created a network as below:

When I want to remove this network, it shows me the following error:

PIF_VLAN_STILL_EXISTS(OpaqueRef:d9c8b8df-718e-4bc3-bfe5-d7894d73871b)

How to solve it?

Thank you.