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Mark Knecht wrote: |
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> Thanks Sami! |
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> |
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> On 4/3/06, Sami Samhuri <sami@××××××××××.com> wrote: |
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> |
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>>Mark Knecht wrote: |
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>> |
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>>>Hello, |
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>> |
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>>[...] |
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>> |
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>>> There have been no changes or updates of any kind to the remote |
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>>>machine that has the NFS directory exported. Normal updates have been |
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>>>occurring on my AMD64 machine so presumably the problem is on this |
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>>>machine as none of the remote files are writable anymore. One thing I |
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>>>notice is that on the remote machine there are some directories and |
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>>>files which have user names and some which only have numbers like 501, |
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>>>502, etc. |
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>>> |
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>>> Where would I start looking for what's changed? |
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>> |
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>>The file system stores a user id for the owner and group. ls looks up the user |
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>>id in /etc/passwd and shows you the username instead. You can make ls show user |
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>>id's instead of names with `ls -ln`. |
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> |
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> |
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> OK, I basically knew this... |
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> |
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> |
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>>When you see numbers such as 501 in the directory listing that means the user or |
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>>group who had that user id is not found in /etc/passwd or /etc/group. |
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> |
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> |
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> OK, that means it's using the passwd file local to that specific |
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> machine then. Here's what I have: |
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> |
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> NFS Server: Only one user account: |
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> |
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> mythtv:x:1000:100::/home/mythtv:/bin/bash |
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> |
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> MythTV Backend Server: 3 user accounts: |
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> |
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> mark:x:500:100:Mark:/home/mark:/bin/bash |
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> evelyn:x:501:100:Evelyn:/home/evelyn:/bin/bash |
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> matt:x:502:100:Matt:/home/matt:/bin/bash |
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> |
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> AMD64 machine: 2 user accounts: |
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> |
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> mark:x:1000:100::/home/mark:/bin/bash |
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> matt:x:1001:100::/home/matt:/bin/bash |
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> |
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> |
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|
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Since your NFS server only has one user account, it might be easiest to |
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set all_squash,anonuid=1000,anongid=100 in your /etc/exports file. That |
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would make it so that all UIDs & GIDs on the NFS clients will be treated |
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as UID 1000 & GID 100 on the NFS server. Of course you would then want |
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to chown everything on the NFS server to 1000:100. |
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|
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The other options are to maintain identical passwd & group files for all |
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of the machines, or to use a NIS/NIS+ server to serve the passwd & group |
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files from one machine to all the other machines, or to install |
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rpc.ugidd or similar UID/GID mapping servers, that can do more complex |
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UID/GID mapping than the UID/GID squashing NFS supports by itself. |
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|
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Good luck, |
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Conway S. Smith |
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