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Implement cluster maintenance mode

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Implements a "maintenance mode" for PVC clusters. For now, the only
thing this mode does is disable node fencing while the state is true.
This allows the administrator to tell PVC that network connectivity,
etc. might be interrupted and to avoid fencing nodes.

Closes #70
This commit is contained in:
Joshua Boniface
2020-01-09 10:53:27 -05:00
parent 4cda5ebb52
commit b6474198a4
8 changed files with 207 additions and 111 deletions
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43
client-cli/pvc.py
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@ -3054,15 +3054,40 @@ def provisioner_status(job):
cleanup(retcode, retdata)
###############################################################################
# pvc maintenance
###############################################################################
@click.group(name='maintenance', short_help='Manage PVC cluster maintenance state.', context_settings=CONTEXT_SETTINGS)
def cli_maintenance():
"""
Manage the maintenance mode of the PVC cluster.
"""
# Abort commands under this group if config is bad
if config.get('badcfg', None):
click.echo('No cluster specified and no local pvc-api.yaml configuration found. Use "pvc cluster" to add a cluster API to connect to.')
exit(1)
###############################################################################
# pvc maintenance on
###############################################################################
@click.command(name='on', short_help='Enable cluster maintenance mode.')
def maintenance_on():
"""
Enable maintenance mode on the PVC cluster.
"""
retcode, retdata = pvc_cluster.maintenance_mode(config, 'true')
cleanup(retcode, retdata)
###############################################################################
# pvc maintenance off
###############################################################################
@click.command(name='off', short_help='Disable cluster maintenance mode.')
def maintenance_off():
"""
Disable maintenance mode on the PVC cluster.
"""
retcode, retdata = pvc_cluster.maintenance_mode(config, 'false')
cleanup(retcode, retdata)
###############################################################################
@ -3291,12 +3316,16 @@ cli_provisioner.add_command(provisioner_profile)
cli_provisioner.add_command(provisioner_create)
cli_provisioner.add_command(provisioner_status)
cli_maintenance.add_command(maintenance_on)
cli_maintenance.add_command(maintenance_off)
cli.add_command(cli_cluster)
cli.add_command(cli_node)
cli.add_command(cli_vm)
cli.add_command(cli_network)
cli.add_command(cli_storage)
cli.add_command(cli_provisioner)
cli.add_command(cli_maintenance)
cli.add_command(status_cluster)
cli.add_command(init_cluster)