== Nebulous ==

This page discusses various administrative tasks associated with Nebulous.

=== nebdiskd ===

{{{nebdiskd}}} can be restarted using the following procedure:

 1. log on to ippdb00 
   * {{{ssh ippdb00}}}
 1. switch to a superuser account 
   * {{{su}}}
 1. change directories to / 
   * {{{cd /}}}
 1. restart nebdiskd 
   * {{{/etc/init.d/nebdiskd restart}}}


=== Removing a host from nebulous permanently ===

If the RAID fails on the data partition and we lose the data from that partition, we need to do the following in the nebulous database:

 1. Remove the entry in the {{{mountedvol}}} table (should be auto-removed by {{{nebdiskd}}}):
   * {{{DELETE FROM mountedvol WHERE vol_id = XX;}}}
 1. Convert the entry in the {{{volume}}} table to point to a dummy location:
   * {{{UPDATE volume SET name = 'ippNNN.0X', path = '/data/ippNNN.0X/nebulous', mountpoint = '/data/ippNNN.0X' WHERE vol_id = XX;}}
 1. Add the new volume:
   * {{{neb-voladd --vname ippXXX.0 --vhost ippXXX --uri file:///data/ippXXX.0/nebulous --mountpoint /data/ippXXX.0 --db nebulous --user nebulous --pass XXX}}}
   * {{{neb-voladm --vname ippXXX.0 --cab_id X --db nebulous --user nebulous --pass XXX}}}
 1. Test that the directories exist:
   * {{{mkdir /data/ippNNN.0/nebulous}}}
   * {{{chown apache.nebulous /data/ippNNN.0/nebulous}}} or {{{chown --reference /data/ipp007.0/nebulous /data/ippNNN.0/nebulous}}}
   * {{{chmod 1775 /data/ippNNN.0/nebulous}}}