Package watcher
source code
Tool to restart erroneously downed virtual machines.
This program and set of classes implement a watchdog to restart
virtual machines in a Ganeti cluster that have crashed or been killed by
a node reboot. Run from cron or similar.
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NotMasterError
Exception raised when this host is not the master.
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NodeMaintenance
Talks to confd daemons and possible shutdown instances/drbd
devices.
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WatcherState
Interface to a state file recording restart attempts.
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Instance
Abstraction for a Virtual Machine instance.
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Watcher
Encapsulate the logic for restarting erroneously halted virtual
machines.
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ShouldPause()
Check whether we should pause. |
source code
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StartNodeDaemons()
Start all the daemons that should be running on all nodes. |
source code
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GetClusterData()
Get a list of instances on this cluster. |
source code
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bool
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MAXTRIES = 5
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RETRY_EXPIRATION = 8* 3600
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BAD_STATES = ['ERROR_down']
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HELPLESS_STATES = ['ERROR_nodedown', 'ERROR_nodeoffline']
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NOTICE = 'NOTICE'
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ERROR = 'ERROR'
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KEY_RESTART_COUNT = "restart_count"
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KEY_RESTART_WHEN = "restart_when"
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KEY_BOOT_ID = "bootid"
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client = None
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Imports:
os,
sys,
time,
logging,
OptionParser,
utils,
constants,
serializer,
errors,
opcodes,
cli,
luxi,
ssconf,
bdev,
hypervisor,
rapi,
confd_client,
netutils,
ganeti
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Opens the state file and acquires a lock on it.
- Parameters:
path (string) - Path to state file
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Connects to RAPI port and does a simple test.
Connects to RAPI port of hostname and does a simple test. At this
time, the test is GetVersion.
- Parameters:
hostname (string) - hostname of the node to connect to. - Returns: bool
- Whether RAPI is working properly
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Parse the command line options.
- Returns:
- (options, args) as from OptionParser.parse_args()
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Main function.
- Decorators:
@rapi.client.UsesRapiClient
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