Commit 4e603cd1 authored by Leigh B. Stoller's avatar Leigh B. Stoller
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parent 2641af4d
stoller 2003/10/09 14:03:10 MDT
Modified files:
os install-rpm
tmcd/common update watchdog
www showexp.php3
showimageid_list.php3 shownode.php3
showstuff.php3 spewrpmtar.php3
swapexp.php3 updateaccounts.php3
Reorg of two aspects of node update.
* install-rpm, install-tarfile, spewrpmtar.php3, Pumped
up even more! The db file we store in /var/db now records both the
timestamp (of the file, or if remote the install time) and the MD5
of the file that was installed. Locally, we can get this info when
accessing the file via NFS (copymode on or off). Remote, we use wget
to get the file, and so pass the timestamp along in the URL request,
and let determine if the file has changed. If the
timestamp it gets is >= to the timestamp of the file, an error code
of 304 (Not Modifed) is returned. Otherwise the file is returned.
If the timestamps are different (remote, server sends back an actual
file), the MD5 of the file is compared against the value stored. If
they are equal, update the timestamp in the db file to avoid
repeated MD5s (or server downloads) in the future. If the MD5 is
different, then reinstall the tarball or rpm, and update the db file
with the new timestamp and MD5. Presto, we have auto update capability!
Caveat: I pass along the old MD5 in the URL, but it is currently
ignored. I do not know if doing the MD5 on the server is a good
idea, but obviously it is easy to add later. At the moment it
happens on the node, which means wasted bandwidth when the timestamp
has changed, but the file has not (probably not something that will
happen in typical usage).
Caveat: The timestamp used on remote nodes is the time the tarfile
is installed (GM time of course). We could arrange to return the
timestamp of the local file back to the node, but that would mean
complicating the protocol (or using an http header) and I was not in
the mood for that. In typical usage, I do not think that people will
be changing tarfiles and rpms so rapidly that this will make a
difference, but if it does, we can change it.
*, client side watchdog, and various web pages:
Deflated node_update, removing all of the older ssh code. We now
assume that all nodes will auto update on a periodic basis, via the
watchdog that runs on all client nodes, including plab nodes.
Changed the permission check to look for new UPDATE permission (used
to be UPDATEACCOUNT). As before, it requires local_root or better.
The reason for this is that node_update now implies more than just
updating the accounts/mounts. The web pages have been changed to
explain that in addition to mounts/accounts, rpms and tarfiles will
also be updated. At the moment, this is still tied to a single
variable (update_accounts) in the nodes table, but as Kirk requested
at the meeting, it will probably be nice to split these out in the
Added the ability to node_update a single node in an experiment (in
addition to all nodes option on the showexp page). This has been
added to the shownode webpage menu options.
Changed locking code to use the newer wrapper states, and to move
the experiment to RUNNING_LOCKED until the update completes. This is
to prevent mayhem in the rest of the system (which could be dealt
with, but is not worth the trouble; people have to wait until their
initiated update is complete, before they can swap out the
Added "short" mode to shownode routine, equiv to the recently added
short mode for showexp. I use this on the confirmation page for
updating a single node, giving the user a couple of pertinent (feel
good) facts before they comfirm.
Revision Changes Path
1.134 +3 -2 testbed/db/
1.17 +3 -0 testbed/os/
1.5 +222 -33 testbed/os/install-rpm
1.11 +223 -32 testbed/os/install-tarfile
1.92 +0 -2 testbed/tbsetup/
1.12 +112 -214 testbed/tbsetup/
1.2 +51 -14 testbed/tbsetup/
1.5 +37 -3 testbed/tmcd/common/update
1.9 +1 -1 testbed/tmcd/common/watchdog
1.60 +4 -3 testbed/www/
1.72 +2 -2 testbed/www/showexp.php3
1.15 +1 -1 testbed/www/showimageid_list.php3
1.14 +5 -0 testbed/www/shownode.php3
1.118 +191 -189 testbed/www/showstuff.php3
1.3 +22 -3 testbed/www/spewrpmtar.php3
1.20 +37 -17 testbed/www/swapexp.php3
1.5 +97 -62 testbed/www/updateaccounts.php3
stoller 2003/10/06 14:27:46 MDT
Modified files:
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