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Diffstat (limited to 'share/examples/diskless/ME')
| -rw-r--r-- | share/examples/diskless/ME | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/share/examples/diskless/ME b/share/examples/diskless/ME index 1179d64..85178e0 100644 --- a/share/examples/diskless/ME +++ b/share/examples/diskless/ME @@ -1,18 +1,37 @@ -When templating, ME is typically a softlink to the appropriate host -subdirectory. This softlink is different for each machine and -should not be updated by the template process. Any system-wise configuration -file that needs to be personalized is typically turned into a softlink -through /conf/ME. For example, /etc/rc.conf.local would be turned into a -softlink pointing to /conf/ME/rc.conf.local. +When templating, /conf/ME is typically a softlink to +/conf/<appropriate-machine>. When doing a diskless boot, /conf/ME is +retargeted by /etc/rc.diskless1 from pointing to the server to pointing +to the client's directory, /conf/<ip-address-of-client>. The retargeting +is accomplished through an MFS -o union mount. -On any given machine, ME is typically a link to the hostname which also -exists as a subdirectory in the /conf directory. So, for each machine you -do: +When templating, this softlink should be different for each machine. +When doing a diskless boot, this softlink is typically part of the / NFS +mount from the server and points to the server's conf directory, but gets +retargeted during the /etc/rc.diskless1 phase. - cd /conf - ln -s this_machines_name ME +System-wide configuration files must generally be targeted through /conf/ME. +For example, your /etc/rc.conf.local should become a softlink to +/conf/ME/rc.conf.local and your real rc.conf.local should go into the +appropriate /conf/<appropriate-machine> directory. This is also true of +/etc/rc.local, /etc/fstab, /etc/syslog.conf, /etc/ccd.conf, /etc/ipfw.conf, +/etc/motd, /etc/resolv.conf, and possibly even /etc/ttys ( if you want +to start an X session up on boot on certain of your machines ). + +When templating, you duplicate your / and /usr partitions on each machine's +local disk from a single master ( assuming /var and /home reside elsewhere ), +EXCEPT for the /conf/ME softlink. The /conf/ME softlink is the only thing +on / that should be different for each machine. + +There are often categories of configuration files. For example, all of your +shell machines may use one resolv.conf while all of your mail proxies may +use another. Configuration files can be categorized fairly easily through +/conf/HT.<category> directories. You put the actual configuration file in +/conf/HT.<category> and make a softlink from +/conf/ME/<appropriate-machines>/config-file to "../HT.<category/config-file". +This means that access to these files tends to run through more then one +softlink. The advantage is that for all the complexity of your /conf +directory hierarchy, most of your common config files exist in only one place +in reality. -The ME link is not used with diskless booting. It is designed for templating -where each destination box has its own local disk. |
