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remove_ubc.py
#!/opt/cloudlinux/venv/bin/python3 -bb # -*- coding: utf-8 -*- # Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved # # Licensed under CLOUD LINUX LICENSE AGREEMENT # http://cloudlinux.com/docs/LICENSE.TXT import os import sys import xml.dom.minidom as xml CoreVersion = 6 core = os.uname() if core[2].find('el5.lve0.8') != -1: CoreVersion = 5 # defined ve.cfg variables ve_cfg = '' ve_lveconfig = '' ve_ubc = '' ve_default = '' ve_lve = '' ve_defaults = '' ve_package = '' ubc = 'false' VE_CFG_PATH = '/etc/container/ve.cfg' VE_CFG_PATH_TMP = VE_CFG_PATH + '.tmp' # Save XML config ve.cfg def save_xml(xml_config): xml_config = xml_config.toprettyxml(encoding='utf-8', indent='', newl='') xml_config = xml_config.replace("\n", '').replace("\t", '') new_xml = xml.parseString(xml_config) buf = new_xml.toprettyxml(encoding='utf-8') if not buf: # paranoia mode) raise RuntimeError(f"Rejected attempt to write empty {VE_CFG_PATH}") with open(VE_CFG_PATH_TMP, 'wb') as f: f.write(buf) f.flush() os.fsync(f.fileno()) os.rename(VE_CFG_PATH_TMP, VE_CFG_PATH) def get_XML_cfg(): global ve_cfg global ve_lveconfig global ve_ubc global ve_default global ve_lve global ve_defaults global ve_package try: ve_cfg = xml.parse(VE_CFG_PATH) except Exception: print('error: bad ve.cfg file') sys.exit(1) try: ve_lveconfig = ve_cfg.getElementsByTagName("lveconfig")[0] except Exception: print('error: bad ve.cfg file') sys.exit(1) global ubc try: ve_ubc = ve_lveconfig.getElementsByTagName("system")[0].getElementsByTagName("ubc")[0].getAttribute("enabled") ubc = ve_ubc except Exception: ubc = 'true' try: ve_default = ve_lveconfig.getElementsByTagName("defaults")[0] except Exception: print('warning: default section error in ve.cfg') try: ve_lve = ve_lveconfig.getElementsByTagName("lve") except Exception: pass try: ve_package = ve_lveconfig.getElementsByTagName("package") except Exception: pass # Get defaults values from ve.cfg ve_defaults = {} try: ve_defaults['mem'] = int(ve_default.getElementsByTagName('mem')[0].getAttribute('limit')) except Exception: ve_defaults['mem'] = 262144 mem = ve_cfg.createElement('mem') mem.setAttribute('limit', str(262144)) try: ve_default.appendChild(mem) except Exception: pass if CoreVersion != 5: try: ve_defaults['io'] = int(ve_default.getElementsByTagName('io')[0].getAttribute('limit')) if ve_defaults['io'] == 25: ve_default.getElementsByTagName('io')[0].setAttribute('limit', str(1024)) except Exception: ve_defaults['io'] = 1024 io = ve_cfg.createElement('io') io.setAttribute('limit', str(1024)) try: ve_default.appendChild(io) except Exception: pass if os.path.exists('/sys/module/lve/parameters/lve_ubc'): try: with open('/sys/module/lve/parameters/lve_ubc', "w", encoding="utf-8") as f: f.write('Y') except Exception: pass def main(): get_XML_cfg() for el in ve_lve: if ubc == 'false': try: el.getElementsByTagName('mem')[0].setAttribute('limit', str(0)) except Exception: mem = ve_cfg.createElement('mem') mem.setAttribute('limit', str(0)) el.appendChild(mem) else: try: mem = el.getElementsByTagName('mem')[0].getAttribute('limit') except Exception: mem = ve_cfg.createElement('mem') mem.setAttribute('limit', str(ve_defaults['mem'])) el.appendChild(mem) else: pass if CoreVersion != 5: if ve_defaults['io'] == 25: try: if ( int(el.getElementsByTagName('io')[0].getAttribute('limit')) <= 100 and int(el.getElementsByTagName('io')[0].getAttribute('limit')) != 0 ): el.getElementsByTagName('io')[0].setAttribute('limit', str(1024)) except Exception: pass for el in ve_package: if ubc == 'false': try: el.getElementsByTagName('mem')[0].setAttribute('limit', str(0)) except Exception: mem = ve_cfg.createElement('mem') mem.setAttribute('limit', str(0)) el.appendChild(mem) else: try: mem = el.getElementsByTagName('mem')[0].getAttribute('limit') except Exception: mem = ve_cfg.createElement('mem') mem.setAttribute('limit', str(ve_defaults['mem'])) el.appendChild(mem) if CoreVersion != 5: if ve_defaults['io'] == 25: try: if ( int(el.getElementsByTagName('io')[0].getAttribute('limit')) <= 100 and int(el.getElementsByTagName('io')[0].getAttribute('limit')) != 0 ): el.getElementsByTagName('io')[0].setAttribute('limit', str(1024)) except Exception: pass try: ve_ubc = ve_lveconfig.getElementsByTagName("system") for el in ve_ubc: el.parentNode.removeChild(el) except Exception: pass save_xml(ve_cfg) sys.exit(0) if __name__ == "__main__": main()
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