def _switchover(self): """Perform switchover from master to candidate slave This method switches the role of master to a candidate slave. The candidate is specified via the --candidate option. Returns bool - True = no errors, False = errors reported. """ # Check new master is not actual master - need valid candidate candidate = self.options.get("new_master", None) if (self.topology.master.is_alias(candidate['host']) and self.master_vals['port'] == candidate['port']): err_msg = ERROR_SAME_MASTER.format(candidate['host'], candidate['port'], self.master_vals['host'], self.master_vals['port']) self._report(err_msg, logging.WARN) self._report(err_msg, logging.CRITICAL) raise UtilRplError(err_msg) # Check for --master-info-repository=TABLE if rpl_user is None if not self._check_master_info_type(): return False # Check for mixing IP and hostnames if not self._check_host_references(): print "# WARNING: %s" % _HOST_IP_WARNING self._report(_HOST_IP_WARNING, logging.WARN, False) # Check prerequisites if candidate is None: msg = "No candidate specified." self._report(msg, logging.CRITICAL) raise UtilRplError(msg) self._report(" ".join([ "# Performing switchover from master at", "%s:%s" % (self.master_vals['host'], self.master_vals['port']), "to slave at %s:%s." % (candidate['host'], candidate['port']) ])) if not self.topology.switchover(candidate): self._report("# Errors found. Switchover aborted.", logging.ERROR) return False return True
def _switchover(self): """Perform switchover from master to candidate slave This method switches the role of master to a candidate slave. The candidate is specified via the --candidate option. Returns bool - True = no errors, False = errors reported. """ # Check new master is not actual master - need valid candidate candidate = self.options.get("new_master", None) if (self.topology.master.is_alias(candidate['host']) and self.master_vals['port'] == candidate['port']): err_msg = ERROR_SAME_MASTER.format(candidate['host'], candidate['port'], self.master_vals['host'], self.master_vals['port']) self._report(err_msg, logging.WARN) self._report(err_msg, logging.CRITICAL) raise UtilRplError(err_msg) # Check for --master-info-repository=TABLE if rpl_user is None if not self._check_master_info_type(): return False # Check for mixing IP and hostnames if not self._check_host_references(): print "# WARNING: %s" % _HOST_IP_WARNING self._report(_HOST_IP_WARNING, logging.WARN, False) # Check prerequisites if candidate is None: msg = "No candidate specified." self._report(msg, logging.CRITICAL) raise UtilRplError(msg) self._report(" ".join(["# Performing switchover from master at", "%s:%s" % (self.master_vals['host'], self.master_vals['port']), "to slave at %s:%s." % (candidate['host'], candidate['port'])])) if not self.topology.switchover(candidate): self._report("# Errors found. Switchover aborted.", logging.ERROR) return False return True
def _switchover(self): """Perform switchover from master to candidate slave This method switches the role of master to a candidate slave. The candidate is specified via the --candidate option. Returns bool - True = no errors, False = errors reported. """ # Check new master is not actual master - need valid candidate candidate = self.options.get("new_master", None) if (self.topology.master.is_alias(candidate['host']) and self.master_vals['port'] == candidate['port']): err_msg = ERROR_SAME_MASTER.format(candidate['host'], candidate['port'], self.master_vals['host'], self.master_vals['port']) self._report(err_msg, logging.WARN) self._report(err_msg, logging.CRITICAL) raise UtilRplError(err_msg) # Check for --master-info-repository=TABLE if rpl_user is None if not self._check_master_info_type(): return False # Check for mixing IP and hostnames if not self._check_host_references(): print("# WARNING: {0}".format(HOST_IP_WARNING)) self._report(HOST_IP_WARNING, logging.WARN, False) # Check prerequisites if candidate is None: msg = "No candidate specified." self._report(msg, logging.CRITICAL) raise UtilRplError(msg) # Can only check errant transactions if GTIDs are enabled. if self.topology.gtid_enabled(): # Check existence of errant transactions on slaves errant_tnx = self.topology.find_errant_transactions() if errant_tnx: force = self.options.get('force') print("# ERROR: {0}".format(_ERRANT_TNX_ERROR)) self._report(_ERRANT_TNX_ERROR, logging.ERROR, False) for host, port, tnx_set in errant_tnx: errant_msg = (" - For slave '{0}@{1}': " "{2}".format(host, port, ", ".join(tnx_set))) print("# {0}".format(errant_msg)) self._report(errant_msg, logging.ERROR, False) # Raise an exception (to stop) if tolerant mode is OFF if not force: raise UtilRplError("{0} Note: If you want to ignore this " "issue, although not advised, please " "use the utility with the --force " "option.".format(_ERRANT_TNX_ERROR)) else: warn_msg = ("Errant transactions check skipped (GTID not enabled " "for the whole topology).") print("# WARNING: {0}".format(warn_msg)) self._report(warn_msg, logging.WARN, False) self._report(" ".join(["# Performing switchover from master at", "%s:%s" % (self.master_vals['host'], self.master_vals['port']), "to slave at %s:%s." % (candidate['host'], candidate['port'])])) if not self.topology.switchover(candidate): self._report("# Errors found. Switchover aborted.", logging.ERROR) return False return True
def _switchover(self): """Perform switchover from master to candidate slave This method switches the role of master to a candidate slave. The candidate is specified via the --candidate option. Returns bool - True = no errors, False = errors reported. """ # Check new master is not actual master - need valid candidate candidate = self.options.get("new_master", None) if (self.topology.master.is_alias(candidate['host']) and self.master_vals['port'] == candidate['port']): err_msg = ERROR_SAME_MASTER.format(candidate['host'], candidate['port'], self.master_vals['host'], self.master_vals['port']) self._report(err_msg, logging.WARN) self._report(err_msg, logging.CRITICAL) raise UtilRplError(err_msg) # Check for --master-info-repository=TABLE if rpl_user is None if not self._check_master_info_type(): return False # Check for mixing IP and hostnames if not self._check_host_references(): print("# WARNING: {0}".format(HOST_IP_WARNING)) self._report(HOST_IP_WARNING, logging.WARN, False) # Check prerequisites if candidate is None: msg = "No candidate specified." self._report(msg, logging.CRITICAL) raise UtilRplError(msg) # Can only check errant transactions if GTIDs are enabled. if self.topology.gtid_enabled(): # Check existence of errant transactions on slaves errant_tnx = self.topology.find_errant_transactions() if errant_tnx: force = self.options.get('force') print("# ERROR: {0}".format(_ERRANT_TNX_ERROR)) self._report(_ERRANT_TNX_ERROR, logging.ERROR, False) for host, port, tnx_set in errant_tnx: errant_msg = (" - For slave '{0}@{1}': " "{2}".format(host, port, ", ".join(tnx_set))) print("# {0}".format(errant_msg)) self._report(errant_msg, logging.ERROR, False) # Raise an exception (to stop) if tolerant mode is OFF if not force: raise UtilRplError("{0} Note: If you want to ignore this " "issue, although not advised, please " "use the utility with the --force " "option.".format(_ERRANT_TNX_ERROR)) else: warn_msg = ("Errant transactions check skipped (GTID not enabled " "for the whole topology).") print("# WARNING: {0}".format(warn_msg)) self._report(warn_msg, logging.WARN, False) self._report(" ".join(["# Performing switchover from master at", "%s:%s" % (self.master_vals['host'], self.master_vals['port']), "to slave at %s:%s." % (candidate['host'], candidate['port'])])) if not self.topology.switchover(candidate): self._report("# Errors found. Switchover aborted.", logging.ERROR) return False return True
try: master_val, slaves_val, candidates_val = parse_topology_connections( opt) except UtilRplError: _, e, _ = sys.exc_info() print("ERROR: {0}".format(e.errmsg)) sys.exit(1) # Check hostname alias if new_master_val: if check_hostname_alias(master_val, new_master_val): master = Server({'conn_info': master_val}) new_master = Server({'conn_info': new_master_val}) parser.error(ERROR_SAME_MASTER.format( n_master_host=new_master.host, n_master_port=new_master.port, master_host=master.host, master_port=master.port)) if master_val: for slave_val in slaves_val: if check_hostname_alias(master_val, slave_val): master = Server({'conn_info': master_val}) slave = Server({'conn_info': slave_val}) msg = ERROR_MASTER_IN_SLAVES.format(master_host=master.host, master_port=master.port, slaves_candidates=SLAVES, slave_host=slave.host, slave_port=slave.port) parser.error(msg) for cand_val in candidates_val:
try: master_val, slaves_val, candidates_val = parse_topology_connections( opt) except UtilRplError: _, e, _ = sys.exc_info() print("ERROR: {0}".format(e.errmsg)) sys.exit(1) # Check hostname alias if new_master_val: if check_hostname_alias(master_val, new_master_val): master = Server({'conn_info': master_val}) new_master = Server({'conn_info': new_master_val}) parser.error( ERROR_SAME_MASTER.format(n_master_host=new_master.host, n_master_port=new_master.port, master_host=master.host, master_port=master.port)) if master_val: for slave_val in slaves_val: if check_hostname_alias(master_val, slave_val): master = Server({'conn_info': master_val}) slave = Server({'conn_info': slave_val}) msg = ERROR_MASTER_IN_SLAVES.format(master_host=master.host, master_port=master.port, slaves_candidates=SLAVES, slave_host=slave.host, slave_port=slave.port) parser.error(msg) for cand_val in candidates_val: if check_hostname_alias(master_val, cand_val):