I need to set up a network fs, so that I can mount a directory from Box A on to Box B and Box C. However, I need those files to not be transferred from Box A upon every access request; basically, I need the files cached locally, and only updated when "pushed" from Box A.
Any suggestions?
You might benefit from using NFS and CacheFS. It should be available on most modern Linux distros.
You can serve the files over FTP, HTTP(S) or SFTP, and access them through LftpFS.
lftpfs --options=ro,allow_other --fs-cache-timeout=999999999 /net/A /var/cache/net/A /etc/local/A.lftp
where /etc/local/A.ftp contains something like
open sftp://A/shared
/var/cache/net/A.
Can you run rsync on Box A whenever you need to push the files to the other 2 boxes?
Something like:
rsync -avz /local/directory/ boxb:/remote/directory/
rsync -avz /local/directory/ boxc:/remote/directory/
rsync will only copy changed files as required.
If you need to automate the push, you could always use cron to start the rsyncs.
