Patrick Lists wrote:
I fail to see how your repository problem is related to my Kickstart PXE/NFS problem. We can install CentOS 6 (no Kickstart) without problems using PXE. It's the NFS-mounting of the Kickstart-file which fails. What I'd love to learn is how others have made NFS/Kickstart work...
Is CentOS 6 assuming NFSv4 by default perhaps?
According to the RHEL 6.0 Release Notes it is:
"Mounting a file system via NFS now defaults to NFSv4."
Yes, this sounds like the correct explanation! Our RHEL5.6 PXE/TFTP/NFS server is certainly configured for NFSv3. I haven't explored the NFSv4 approach though.
How can we tweak the CentOS6 Kickstart installation to explicitly request an NFSv3 service in the PXE config file:
kernel CentOS-6-i386/vmlinuz append load_ramdisk=1 initrd=CentOS-6-i386/initrd.img network ks=nfs:130.226.86.4:/u/rpm/kickstart/ks-centos-6-clean-i386.cfg
To rephrase my question: Where do we find documentation for the vmlinuz append flags shown above, in particular documentation of the ks=... flags?
Hopefully there'll be some way to force an NFSv3 mount in stead of the default NFSv4? Or perhaps we need to use http: and stop using nfs: with CentOS6?
Thanks, Ole
Ole Holm Nielsen wrote:
Patrick Lists wrote:
I fail to see how your repository problem is related to my Kickstart PXE/NFS problem. We can install CentOS 6 (no Kickstart) without problems using PXE. It's the NFS-mounting of the Kickstart-file which fails. What I'd love to learn is how others have made NFS/Kickstart work...
Is CentOS 6 assuming NFSv4 by default perhaps?
According to the RHEL 6.0 Release Notes it is:
"Mounting a file system via NFS now defaults to NFSv4."
Yes, this sounds like the correct explanation! Our RHEL5.6 PXE/TFTP/NFS server is certainly configured for NFSv3. I haven't explored the NFSv4 approach though.
How can we tweak the CentOS6 Kickstart installation to explicitly request an NFSv3 service in the PXE config file:
kernel CentOS-6-i386/vmlinuz append load_ramdisk=1 initrd=CentOS-6-i386/initrd.img networkks=nfs:130.226.86.4:/u/rpm/kickstart/ks-centos-6-clean-i386.cfg
To rephrase my question: Where do we find documentation for the vmlinuz append flags shown above, in particular documentation of the ks=... flags?
Hopefully there'll be some way to force an NFSv3 mount in stead of the default NFSv4? Or perhaps we need to use http: and stop using nfs: with CentOS6?
I would suggest using NFSv4 on all of your servers. It needs only one port open on the firewall, tcp 2049 and I think it is better solution security wise (if I remember correctly).
I started to use NFSv4 from the start on the CentOS 5.x and never had any problems. Why not upgrade when opportunity presented it self.
On 07/20/2011 09:49 PM, Ole Holm Nielsen wrote:
"Mounting a file system via NFS now defaults to NFSv4."
Yes, this sounds like the correct explanation! Our RHEL5.6 PXE/TFTP/NFS server is certainly configured for NFSv3. I haven't explored the NFSv4 approach though.
How can we tweak the CentOS6 Kickstart installation to explicitly request an NFSv3 service in the PXE config file:
If there is such an option then I could not find it. Maybe someone else knows how to force NFSv3.
kernel CentOS-6-i386/vmlinuz append load_ramdisk=1 initrd=CentOS-6-i386/initrd.img networkks=nfs:130.226.86.4:/u/rpm/kickstart/ks-centos-6-clean-i386.cfg
To rephrase my question: Where do we find documentation for the vmlinuz append flags shown above, in particular documentation of the ks=... flags?
Try the Installation Guide: https://access.redhat.com/knowledge/docs/
Hopefully there'll be some way to force an NFSv3 mount in stead of the default NFSv4?Or perhaps we need to use http: and stop using nfs: with CentOS6?
I have used NFS (v3 & v4) and HTTP and for me HTTP was faster so I continued to use HTTP.
Regards, Patrick
On Thu, 21 Jul 2011, Patrick Lists wrote:
I have used NFS (v3 & v4) and HTTP and for me HTTP was faster so I continued to use HTTP.
I'd switch to HTTP on the basis that HTTP seems to be the more 'normal' way to install, and there are no obvious downsides.
jh
On Thu, 21 Jul 2011, John Hodrien wrote:
To: CentOS mailing list centos@centos.org From: John Hodrien J.H.Hodrien@leeds.ac.uk Subject: Re: [CentOS] CentOS 6 PXE boot: Unable to download the kickstart file
On Thu, 21 Jul 2011, Patrick Lists wrote:
I have used NFS (v3 & v4) and HTTP and for me HTTP was faster so I continued to use HTTP.
I'd switch to HTTP on the basis that HTTP seems to be the more 'normal' way to install, and there are no obvious downsides.
Yes. At least there are no version changes with the http protocol that would bust anything, and it still works over the network. Myself, I use my kickstart file from a USB flash drive, so that works on a machine without a Floppy DD :)
Regards,
Keith
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