Folks, I would like to do a series of updates to the BRAHMS Linux cluster, starting some time next week. The work to be done includes: 1) commission the new 36 Gbyte user home disk in a mirrored configuration. this will double the available disk space. The current 18 Gbyte disk will revert back to scratch space. 2) upgrade all piis from RedHat 6.1 to 6.2 with linux-2.2.16 and Arla AFS, keeping their current disk partitionning (Made by Dell and not very efficient). 3) To implement (1) it might be necessary to do a fresh RedHat 7.0 install on pii3. This will bring the number of piis running RedHat 7.0 to 3: pii2 (our test computer), pii3 and pii10. 4) At some (much) later date, repartition the disks on all piis and do a fresh install of a current RedHat distribution. This will fix the two problems with the current (default-Dell) installs a) wasting most of the disk space on the system disks and b) being incomplete installs (not all existing packages are installed). This upgrade will have to wait until we are ready to move to the post-egcs-1.1.2 compiler environment (such as shipped with RedHat 7). The desired Linux configuration for all piis is: a) Disk partitionning: the "/" partition- 4 Gbytes, swap - 0.5-1 Gbyte, the rest of the system disk available as scratch space. b) Custom RedHat install with "Install everything" package selection. c) OpenSSH ssh (stock with RedHat 7) d) Arla AFS e) ssh-only logins (no incoming rsh, telnet nor ftp). d) cross-mounted pii scratch disks using automount/autofs. read-only mounted rmine04 /brahms/data01,02,03 disks. Any suggestions/comments are welcome. -- Konstantin Olchanski Physics Department, Brookhaven National Laboratory, Long Island, New York olchansk@bnl.gov
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