Name¶
ganeti-noded - Ganeti node daemon
Synopsis¶
ganeti-noded [-f] [-d]
DESCRIPTION¶
The
ganeti-noded is the daemon which is responsible for the node
functions in the Ganeti system.
By default, in order to be able to support features such as node powercycling
even on systems with a very damaged root disk,
ganeti-noded locks
itself in RAM using
mlockall(2). You can disable this feature by
passing in the
--no-mlock to the daemon.
For testing purposes, you can give the
-f option and the program won't
detach from the running terminal.
Debug-level message can be activated by giving the
-d option.
Logging to syslog, rather than its own log file, can be enabled by passing in
the
--syslog option.
The
ganeti-noded daemon listens to port 1811 TCP, on all interfaces, by
default. The port can be overridden by an entry the services database (usually
/etc/services) or by passing the
-p option. The
-b option
can be used to specify the address to bind to (defaults to
0.0.0.0).
Ganeti noded communication is protected via SSL, with a key generated at cluster
init time. This can be disabled with the
--no-ssl option, or a
different SSL key and certificate can be specified using the
-K and
-C options.
ROLE¶
The role of the node daemon is to do almost all the actions that change the
state of the node. Things like creating disks for instances, activating disks,
starting/stopping instance and so on are done via the node daemon.
Also, in some cases the startup/shutdown of the master daemon are done via the
node daemon, and the cluster IP address is also added/removed to the master
node via it.
If the node daemon is stopped, the instances are not affected, but the master
won't be able to talk to that node.
COMMUNICATION PROTOCOL¶
Currently the master-node RPC is done using a simple RPC protocol built using
JSON over HTTP(S).
REPORTING BUGS¶
Report bugs to project website (
http://code.google.com/p/ganeti/) or contact the
developers using the Ganeti mailing list (ganeti@googlegroups.com).
SEE ALSO¶
Ganeti overview and specifications:
ganeti(7) (general overview),
ganeti-os-interface(7) (guest OS definitions).
Ganeti commands:
gnt-cluster(8) (cluster-wide commands),
gnt-job(8) (job-related commands),
gnt-node(8) (node-related
commands),
gnt-instance(8) (instance commands),
gnt-os(8) (guest
OS commands),
gnt-group(8) (node group commands),
gnt-backup(8)
(instance import/export commands),
gnt-debug(8) (debug commands).
Ganeti daemons:
ganeti-watcher(8) (automatic instance restarter),
ganeti-cleaner(8) (job queue cleaner),
ganeti-noded(8) (node
daemon),
ganeti-masterd(8) (master daemon),
ganeti-rapi(8)
(remote API daemon).
Ganeti htools:
htools(1) (generic binary),
hbal(1) (cluster
balancer),
hspace(1) (capacity calculation),
hail(1) (IAllocator
plugin),
hscan(1) (data gatherer from remote clusters).
COPYRIGHT¶
Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc. Permission is
granted to copy, distribute and/or modify under the terms of the GNU General
Public License as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
On Debian systems, the complete text of the GNU General Public License can be
found in /usr/share/common-licenses/GPL.