MySQL MHA failover过程

1、切换过程

[root@es3 ~]# masterha_check_repl --conf=/root/app1.cnf Tue Aug 20 10:22:41 2019 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Tue Aug 20 10:22:41 2019 - [info] Reading application default configuration from /root/app1.cnf..Tue Aug 20 10:22:41 2019 - [info] Reading server configuration from /root/app1.cnf..Tue Aug 20 10:22:41 2019 - [info] MHA::MasterMonitor version 0.58.Tue Aug 20 10:22:42 2019 - [info] GTID failover mode = 1Tue Aug 20 10:22:42 2019 - [info] Dead Servers:Tue Aug 20 10:22:42 2019 - [info] Alive Servers:Tue Aug 20 10:22:42 2019 - [info]   es1(192.168.56.14:3306)Tue Aug 20 10:22:42 2019 - [info]   es2(192.168.56.15:3306)Tue Aug 20 10:22:42 2019 - [info]   es3(192.168.56.16:3306)Tue Aug 20 10:22:42 2019 - [info] Alive Slaves:Tue Aug 20 10:22:42 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:22:42 2019 - [info]     GTID ONTue Aug 20 10:22:42 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:22:42 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:22:42 2019 - [info]     GTID ONTue Aug 20 10:22:42 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:22:42 2019 - [info] Current Alive Master: es3(192.168.56.16:3306)Tue Aug 20 10:22:42 2019 - [info] Checking slave configurations..Tue Aug 20 10:22:42 2019 - [info]  read_only=1 is not set on slave es2(192.168.56.15:3306).Tue Aug 20 10:22:42 2019 - [info] Checking replication filtering settings..Tue Aug 20 10:22:42 2019 - [info]  binlog_do_db= , binlog_ignore_db= Tue Aug 20 10:22:42 2019 - [info]  Replication filtering check ok.Tue Aug 20 10:22:42 2019 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.Tue Aug 20 10:22:42 2019 - [info] Checking SSH publickey authentication settings on the current master..Tue Aug 20 10:22:43 2019 - [info] HealthCheck: SSH to es3 is reachable.Tue Aug 20 10:22:43 2019 - [info] es3(192.168.56.16:3306) (current master) +--es1(192.168.56.14:3306) +--es2(192.168.56.15:3306)Tue Aug 20 10:22:43 2019 - [info] Checking replication health on es1..Tue Aug 20 10:22:43 2019 - [info]  ok.Tue Aug 20 10:22:43 2019 - [info] Checking replication health on es2..Tue Aug 20 10:22:43 2019 - [info]  ok.Tue Aug 20 10:22:43 2019 - [info] Checking master_ip_failover_script status:Tue Aug 20 10:22:43 2019 - [info]   /usr/local/bin/master_ip_failover --command=status --ssh_user=root --orig_master_host=es3 --orig_master_ip=192.168.56.16 --orig_master_port=3306 IN SCRIPT TEST====/sbin/ifconfig enp0s8:1 down==/sbin/ifconfig enp0s8:1 192.168.56.191/24===Checking the Status of the script.. OK Tue Aug 20 10:22:43 2019 - [info]  OK.Tue Aug 20 10:22:43 2019 - [info] Checking shutdown script status:Tue Aug 20 10:22:43 2019 - [info]   /usr/local/bin/stop_report --command=status --ssh_user=root --host=es3 --ip=192.168.56.16 Tue Aug 20 10:22:43 2019 - [info]  OK.Tue Aug 20 10:22:43 2019 - [info] Got exit code 0 (Not master dead).MySQL Replication Health is OK.[root@es3 ~]# masterha_manager --conf=/root/app1.cnf    Tue Aug 20 10:22:47 2019 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Tue Aug 20 10:22:47 2019 - [info] Reading application default configuration from /root/app1.cnf..Tue Aug 20 10:22:47 2019 - [info] Reading server configuration from /root/app1.cnf..Tue Aug 20 10:22:47 2019 - [info] MHA::MasterMonitor version 0.58.Tue Aug 20 10:22:48 2019 - [info] GTID failover mode = 1Tue Aug 20 10:22:48 2019 - [info] Dead Servers:Tue Aug 20 10:22:48 2019 - [info] Alive Servers:Tue Aug 20 10:22:48 2019 - [info]   es1(192.168.56.14:3306)Tue Aug 20 10:22:48 2019 - [info]   es2(192.168.56.15:3306)Tue Aug 20 10:22:48 2019 - [info]   es3(192.168.56.16:3306)Tue Aug 20 10:22:48 2019 - [info] Alive Slaves:Tue Aug 20 10:22:48 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:22:48 2019 - [info]     GTID ONTue Aug 20 10:22:48 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:22:48 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:22:48 2019 - [info]     GTID ONTue Aug 20 10:22:48 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:22:48 2019 - [info] Current Alive Master: es3(192.168.56.16:3306)Tue Aug 20 10:22:48 2019 - [info] Checking slave configurations..Tue Aug 20 10:22:48 2019 - [info]  read_only=1 is not set on slave es2(192.168.56.15:3306).Tue Aug 20 10:22:48 2019 - [info] Checking replication filtering settings..Tue Aug 20 10:22:48 2019 - [info]  binlog_do_db= , binlog_ignore_db= Tue Aug 20 10:22:48 2019 - [info]  Replication filtering check ok.Tue Aug 20 10:22:48 2019 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.Tue Aug 20 10:22:48 2019 - [info] Checking SSH publickey authentication settings on the current master..Tue Aug 20 10:22:48 2019 - [info] HealthCheck: SSH to es3 is reachable.Tue Aug 20 10:22:48 2019 - [info] es3(192.168.56.16:3306) (current master) +--es1(192.168.56.14:3306) +--es2(192.168.56.15:3306)Tue Aug 20 10:22:48 2019 - [info] Checking master_ip_failover_script status:Tue Aug 20 10:22:48 2019 - [info]   /usr/local/bin/master_ip_failover --command=status --ssh_user=root --orig_master_host=es3 --orig_master_ip=192.168.56.16 --orig_master_port=3306 IN SCRIPT TEST====/sbin/ifconfig enp0s8:1 down==/sbin/ifconfig enp0s8:1 192.168.56.191/24===Checking the Status of the script.. OK Tue Aug 20 10:22:48 2019 - [info]  OK.Tue Aug 20 10:22:48 2019 - [info] Checking shutdown script status:Tue Aug 20 10:22:48 2019 - [info]   /usr/local/bin/stop_report --command=status --ssh_user=root --host=es3 --ip=192.168.56.16 Tue Aug 20 10:22:48 2019 - [info]  OK.Tue Aug 20 10:22:48 2019 - [info] Set master ping interval 3 seconds.Tue Aug 20 10:22:48 2019 - [info] Set secondary check script: masterha_secondary_check -s 192.168.56.16 -s 192.168.56.15Tue Aug 20 10:22:48 2019 - [info] Starting ping health check on es3(192.168.56.16:3306)..Tue Aug 20 10:22:48 2019 - [info] Ping(SELECT) succeeded, waiting until MySQL doesn't respond..Tue Aug 20 10:23:00 2019 - [warning] Got error on MySQL select ping: 2013 (Lost connection to MySQL server during query)Tue Aug 20 10:23:01 2019 - [info] Executing SSH check script: exit 0Tue Aug 20 10:23:01 2019 - [info] Executing secondary network check script: masterha_secondary_check -s 192.168.56.16 -s 192.168.56.15  --user=root  --master_host=es3  --master_ip=192.168.56.16  --master_port=3306 --master_user=repl --master_password=123456 --ping_type=SELECTTue Aug 20 10:23:01 2019 - [info] HealthCheck: SSH to es3 is reachable.Monitoring server 192.168.56.16 is reachable, Master is not reachable from 192.168.56.16. OK.Monitoring server 192.168.56.15 is reachable, Master is not reachable from 192.168.56.15. OK.Tue Aug 20 10:23:02 2019 - [info] Master is not reachable from all other monitoring servers. Failover should start.Tue Aug 20 10:23:03 2019 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.56.16' (111))Tue Aug 20 10:23:03 2019 - [warning] Connection failed 2 time(s)..Tue Aug 20 10:23:06 2019 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.56.16' (111))Tue Aug 20 10:23:06 2019 - [warning] Connection failed 3 time(s)..Tue Aug 20 10:23:09 2019 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.56.16' (111))Tue Aug 20 10:23:09 2019 - [warning] Connection failed 4 time(s)..Tue Aug 20 10:23:09 2019 - [warning] Master is not reachable from health checker!Tue Aug 20 10:23:09 2019 - [warning] Master es3(192.168.56.16:3306) is not reachable!Tue Aug 20 10:23:09 2019 - [warning] SSH is reachable.Tue Aug 20 10:23:09 2019 - [info] Connecting to a master server failed. Reading configuration file /etc/masterha_default.cnf and /root/app1.cnf again, and trying to connect to all servers to check server status..Tue Aug 20 10:23:09 2019 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Tue Aug 20 10:23:09 2019 - [info] Reading application default configuration from /root/app1.cnf..Tue Aug 20 10:23:09 2019 - [info] Reading server configuration from /root/app1.cnf..Tue Aug 20 10:23:11 2019 - [info] GTID failover mode = 1Tue Aug 20 10:23:11 2019 - [info] Dead Servers:Tue Aug 20 10:23:11 2019 - [info]   es3(192.168.56.16:3306)Tue Aug 20 10:23:11 2019 - [info] Alive Servers:Tue Aug 20 10:23:11 2019 - [info]   es1(192.168.56.14:3306)Tue Aug 20 10:23:11 2019 - [info]   es2(192.168.56.15:3306)Tue Aug 20 10:23:11 2019 - [info] Alive Slaves:Tue Aug 20 10:23:11 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:11 2019 - [info]     GTID ONTue Aug 20 10:23:11 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:23:11 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:11 2019 - [info]     GTID ONTue Aug 20 10:23:11 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:23:11 2019 - [info] Checking slave configurations..Tue Aug 20 10:23:11 2019 - [info]  read_only=1 is not set on slave es2(192.168.56.15:3306).Tue Aug 20 10:23:11 2019 - [info] Checking replication filtering settings..Tue Aug 20 10:23:11 2019 - [info]  Replication filtering check ok.Tue Aug 20 10:23:11 2019 - [info] Master is down!Tue Aug 20 10:23:11 2019 - [info] Terminating monitoring script.Tue Aug 20 10:23:11 2019 - [info] Got exit code 20 (Master dead).Tue Aug 20 10:23:11 2019 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Tue Aug 20 10:23:11 2019 - [info] Reading application default configuration from /root/app1.cnf..Tue Aug 20 10:23:11 2019 - [info] Reading server configuration from /root/app1.cnf..Tue Aug 20 10:23:11 2019 - [info] MHA::MasterFailover version 0.58.Tue Aug 20 10:23:11 2019 - [info] Starting master failover.Tue Aug 20 10:23:11 2019 - [info] Tue Aug 20 10:23:11 2019 - [info] * Phase 1: Configuration Check Phase..Tue Aug 20 10:23:11 2019 - [info] Tue Aug 20 10:23:12 2019 - [info] GTID failover mode = 1Tue Aug 20 10:23:12 2019 - [info] Dead Servers:Tue Aug 20 10:23:12 2019 - [info]   es3(192.168.56.16:3306)Tue Aug 20 10:23:12 2019 - [info] Checking master reachability via MySQL(double check)...Tue Aug 20 10:23:12 2019 - [info]  ok.Tue Aug 20 10:23:12 2019 - [info] Alive Servers:Tue Aug 20 10:23:12 2019 - [info]   es1(192.168.56.14:3306)Tue Aug 20 10:23:12 2019 - [info]   es2(192.168.56.15:3306)Tue Aug 20 10:23:12 2019 - [info] Alive Slaves:Tue Aug 20 10:23:12 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:12 2019 - [info]     GTID ONTue Aug 20 10:23:12 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:23:12 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:12 2019 - [info]     GTID ONTue Aug 20 10:23:12 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:23:12 2019 - [info] Starting GTID based failover.Tue Aug 20 10:23:12 2019 - [info] Tue Aug 20 10:23:12 2019 - [info] ** Phase 1: Configuration Check Phase completed.Tue Aug 20 10:23:12 2019 - [info] Tue Aug 20 10:23:12 2019 - [info] * Phase 2: Dead Master Shutdown Phase..Tue Aug 20 10:23:12 2019 - [info] Tue Aug 20 10:23:12 2019 - [info] Forcing shutdown so that applications never connect to the current master..Tue Aug 20 10:23:12 2019 - [info] Executing master IP deactivation script:Tue Aug 20 10:23:12 2019 - [info]   /usr/local/bin/master_ip_failover --orig_master_host=es3 --orig_master_ip=192.168.56.16 --orig_master_port=3306 --command=stopssh --ssh_user=root  IN SCRIPT TEST====/sbin/ifconfig enp0s8:1 down==/sbin/ifconfig enp0s8:1 192.168.56.191/24===Disabling the VIP on old master: es3 Tue Aug 20 10:23:13 2019 - [info]  done.Tue Aug 20 10:23:13 2019 - [info] Executing SHUTDOWN script:Tue Aug 20 10:23:13 2019 - [info]   /usr/local/bin/stop_report --command=stopssh --ssh_user=root  --host=es3  --ip=192.168.56.16  --port=3306  Tue Aug 20 10:23:13 2019 - [info]  Power off done.Tue Aug 20 10:23:13 2019 - [info] * Phase 2: Dead Master Shutdown Phase completed.Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 3: Master Recovery Phase..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 3.1: Getting Latest Slaves Phase..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] The latest binary log file/position on all slaves is mysqlbin.000005:154Tue Aug 20 10:23:13 2019 - [info] Latest slaves (Slaves that received relay log files to the latest):Tue Aug 20 10:23:13 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:13 2019 - [info]     GTID ONTue Aug 20 10:23:13 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:23:13 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:13 2019 - [info]     GTID ONTue Aug 20 10:23:13 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:23:13 2019 - [info] The oldest binary log file/position on all slaves is mysqlbin.000005:154Tue Aug 20 10:23:13 2019 - [info] Oldest slaves:Tue Aug 20 10:23:13 2019 - [info]   es1(192.168.56.14:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:13 2019 - [info]     GTID ONTue Aug 20 10:23:13 2019 - [info]     Replicating from es3(192.168.56.16:3306)Tue Aug 20 10:23:13 2019 - [info]   es2(192.168.56.15:3306)  Version=5.7.24-log (oldest major version between slaves) log-bin:enabledTue Aug 20 10:23:13 2019 - [info]     GTID ONTue Aug 20 10:23:13 2019 - [info]     Replicating from 192.168.56.16(192.168.56.16:3306)Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 3.3: Determining New Master Phase..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] Searching new master from slaves..Tue Aug 20 10:23:13 2019 - [info]  Candidate masters from the configuration file:Tue Aug 20 10:23:13 2019 - [info]  Non-candidate masters:Tue Aug 20 10:23:13 2019 - [info] New master is es1(192.168.56.14:3306)Tue Aug 20 10:23:13 2019 - [info] Starting master failover..Tue Aug 20 10:23:13 2019 - [info] From:es3(192.168.56.16:3306) (current master) +--es1(192.168.56.14:3306) +--es2(192.168.56.15:3306)To:es1(192.168.56.14:3306) (new master) +--es2(192.168.56.15:3306)Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 3.3: New Master Recovery Phase..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info]  Waiting all logs to be applied.. Tue Aug 20 10:23:13 2019 - [info]   done.Tue Aug 20 10:23:13 2019 - [info] Getting new master's binlog name and position..Tue Aug 20 10:23:13 2019 - [info]  mysqlbin.000005:194Tue Aug 20 10:23:13 2019 - [info]  All other slaves should start replication from here. Statement should be: CHANGE MASTER TO MASTER_HOST='es1 or 192.168.56.14', MASTER_PORT=3306, MASTER_AUTO_POSITION=1, MASTER_USER='repl', MASTER_PASSWORD='xxx';Tue Aug 20 10:23:13 2019 - [info] Master Recovery succeeded. File:Pos:Exec_Gtid_Set: mysqlbin.000005, 194, 83c39775-c24a-11e9-999a-0800272f2bf4:1-4Tue Aug 20 10:23:13 2019 - [info] Executing master IP activate script:Tue Aug 20 10:23:13 2019 - [info]   /usr/local/bin/master_ip_failover --command=start --ssh_user=root --orig_master_host=es3 --orig_master_ip=192.168.56.16 --orig_master_port=3306 --new_master_host=es1 --new_master_ip=192.168.56.14 --new_master_port=3306 --new_master_user='repl'   --new_master_password=xxxUnknown option: new_master_userUnknown option: new_master_passwordIN SCRIPT TEST====/sbin/ifconfig enp0s8:1 down==/sbin/ifconfig enp0s8:1 192.168.56.191/24===Enabling the VIP - 192.168.56.191/24 on the new master - es1 Tue Aug 20 10:23:13 2019 - [info]  OK.Tue Aug 20 10:23:13 2019 - [info] Setting read_only=0 on es1(192.168.56.14:3306)..Tue Aug 20 10:23:13 2019 - [info]  ok.Tue Aug 20 10:23:13 2019 - [info] ** Finished master recovery successfully.Tue Aug 20 10:23:13 2019 - [info] * Phase 3: Master Recovery Phase completed.Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 4: Slaves Recovery Phase..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] * Phase 4.1: Starting Slaves in parallel..Tue Aug 20 10:23:13 2019 - [info] Tue Aug 20 10:23:13 2019 - [info] -- Slave recovery on host es2(192.168.56.15:3306) started, pid: 4516. Check tmp log /data/manager/es2_3306_20190820102311.log if it takes time..Tue Aug 20 10:23:14 2019 - [info] Tue Aug 20 10:23:14 2019 - [info] Log messages from es2 ...Tue Aug 20 10:23:14 2019 - [info] Tue Aug 20 10:23:13 2019 - [info]  Resetting slave es2(192.168.56.15:3306) and starting replication from the new master es1(192.168.56.14:3306)..Tue Aug 20 10:23:13 2019 - [info]  Executed CHANGE MASTER.Tue Aug 20 10:23:13 2019 - [info]  Slave started.Tue Aug 20 10:23:13 2019 - [info]  gtid_wait(83c39775-c24a-11e9-999a-0800272f2bf4:1-4) completed on es2(192.168.56.15:3306). Executed 0 events.Tue Aug 20 10:23:14 2019 - [info] End of log messages from es2.Tue Aug 20 10:23:14 2019 - [info] -- Slave on host es2(192.168.56.15:3306) started.Tue Aug 20 10:23:14 2019 - [info] All new slave servers recovered successfully.Tue Aug 20 10:23:14 2019 - [info] Tue Aug 20 10:23:14 2019 - [info] * Phase 5: New master cleanup phase..Tue Aug 20 10:23:14 2019 - [info] Tue Aug 20 10:23:14 2019 - [info] Resetting slave info on the new master..Tue Aug 20 10:23:14 2019 - [info]  es1: Resetting slave info succeeded.Tue Aug 20 10:23:14 2019 - [info] Master failover to es1(192.168.56.14:3306) completed successfully.Tue Aug 20 10:23:14 2019 - [info] ----- Failover Report -----app1: MySQL Master failover es3(192.168.56.16:3306) to es1(192.168.56.14:3306) succeededMaster es3(192.168.56.16:3306) is down!Check MHA Manager logs at es3 for details.Started automated(non-interactive) failover.Invalidated master IP address on es3(192.168.56.16:3306)Power off es3.Selected es1(192.168.56.14:3306) as a new master.es1(192.168.56.14:3306): OK: Applying all logs succeeded.es1(192.168.56.14:3306): OK: Activated master IP address.es2(192.168.56.15:3306): OK: Slave started, replicating from es1(192.168.56.14:3306)es1(192.168.56.14:3306): Resetting slave info succeeded.Master failover to es1(192.168.56.14:3306) completed successfully.Tue Aug 20 10:23:14 2019 - [info] Sending mail..[root@es3 ~]# ll

2、遇到问题，缺省情况下，如果MHA检测到连续发生宕机，且两次宕机时间间隔不足八小时的话，则不会进行Failover，需要删除最近时间的app1.failover.complete

 [error][/usr/share/perl5/vendor_perl/MHA/MasterFailover.pm, ln310] Last failover was done at 2019/08/20 10:23:14. Current time is too early to do failover again. If you want to do failover, manually remove /data/manager/app1.failover.complete and run this script again.Tue Aug 20 10:54:20 2019 - [error][/usr/share/perl5/vendor_perl/MHA/ManagerUtil.pm, ln177] Got ERROR:  at /usr/bin/masterha_manager line 65.

或者增加如下参数启动

--ignore_last_failover