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# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2018 All Rights Reserved # # Licensed under CLOUD LINUX LICENSE AGREEMENT # https://cloudlinux.com/docs/LICENCE.TXT # import logging import pathlib from clconfigure import run, task from clconfigure.packages import install_package from clconfigure.services import ( STATE_FAILED, STATE_MASKED, STATE_RUNNING, STATE_STOPPED, STATE_UNMASKED, STATE_ENABLED, STATE_DISABLED, get_service_state, set_service_state ) def initialize_lvestats(): # NOTE(vlebedev): We need to trigger 'lve-stats' scriptlets to properly initialized it's database stuff. install_package('lve-stats', reinstall=True) enable_lve_services() @task("Changing default limits state to '{desired_state}'") def set_default_limits_state(desired_state): """ Brings default limits to given state (unlimited | default). May be executed more that once, does't crash on future calls """ if desired_state == 'unlimited': run(['lvectl', 'set', 'default', 'unlimited']) else: raise RuntimeError('Another states temporary unavailable') def disable_lve_services(): """ Turn off all lve-related services. """ for state in [STATE_STOPPED, STATE_DISABLED, STATE_MASKED]: for service in ['lve', 'lve_namespaces', 'lvestats', 'lvectl']: set_service_state(state, service) def enable_lve_services(): """ Turn on all lve-related services. """ for state in [STATE_UNMASKED, STATE_RUNNING, STATE_ENABLED]: for service in ['lve', 'lve_namespaces', 'lvestats', 'lvectl']: set_service_state(state, service) @task("Unloading lve module") def unload_lve_module(): """ Restart services that still use lve device and unload lve module then """ # Check if lve device is held by any process res = run(['lsof', '/dev/lve']) res_stdout_lines = res.stdout.split() if res.stdout is not None else [] services = [ service for service in ['mysqld', 'mariadb', 'httpd'] if any(line.startswith(service) for line in res_stdout_lines) ] if services: run(['systemctl', 'restart', *services]) res = run(['modprobe', '-rf', 'kmodlve']) if pathlib.Path('/sys/module/kmodlve').exists(): logging.warning('Failed to unload the lve module. Please reboot the server.') def apply_workaround_lve_failed(): """ Apply workaround for the case When `systemctl stop lve` makes it transition to "failed" state instead of "inactive" """ if get_service_state('lve') != STATE_FAILED: return set_service_state(STATE_UNMASKED, 'lve') set_service_state(STATE_RUNNING, 'lve') set_service_state(STATE_STOPPED, 'lve') set_service_state(STATE_MASKED, 'lve')