Preface
I've installed MasterHA yesterday,Now let's test the master-slave switch and failover feature.
Framework
| Hostname | IP | Port | Identity | OS Version | MySQL Version |
| zlm2 | 192.168.1.101 | 3306 | master | CentOS 7.0 | 5.7.21 |
| zlm3 | 192.168.1.102 | 3306 | slave/mha-manager | CentOS 7.0 | 5.7.21 |
| null | 192.168.1.200 | null | vip | null | null |
美高梅网站是多少，Procedure
美高梅4858官方网站，Test 1：Manual master switchover
Check state of MHA-manager on zlm3.
1 [root@zlm3 07:35:00 ~]
2 #masterha_check_ssh --conf=/etc/masterha/app1.conf
3 Fri Aug 3 07:37:13 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
4 Fri Aug 3 07:37:13 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
5 Fri Aug 3 07:37:13 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
6 Fri Aug 3 07:37:13 2018 - [info] Starting SSH connection tests..
7 Fri Aug 3 07:37:13 2018 - [debug]
8 Fri Aug 3 07:37:13 2018 - [debug] Connecting via SSH from root@192.168.1.101(192.168.1.101:22) to root@192.168.1.102(192.168.1.102:22)..
9 Fri Aug 3 07:37:13 2018 - [debug] ok.
10 Fri Aug 3 07:37:14 2018 - [debug]
11 Fri Aug 3 07:37:13 2018 - [debug] Connecting via SSH from root@192.168.1.102(192.168.1.102:22) to root@192.168.1.101(192.168.1.101:22)..
12 Fri Aug 3 07:37:13 2018 - [debug] ok.
13 Fri Aug 3 07:37:14 2018 - [info] All SSH connection tests passed successfully.
14
15 [root@zlm3 07:37:14 ~]
16 #masterha_check_repl --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf
17 Fri Aug 3 07:37:37 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
18 Fri Aug 3 07:37:37 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
19 Fri Aug 3 07:37:37 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
20 Fri Aug 3 07:37:37 2018 - [info] MHA::MasterMonitor version 0.56.
21 Fri Aug 3 07:37:38 2018 - [info] GTID failover mode = 1
22 Fri Aug 3 07:37:38 2018 - [info] Dead Servers:
23 Fri Aug 3 07:37:38 2018 - [info] Alive Servers:
24 Fri Aug 3 07:37:38 2018 - [info] 192.168.1.101(192.168.1.101:3306)
25 Fri Aug 3 07:37:38 2018 - [info] 192.168.1.102(192.168.1.102:3306)
26 Fri Aug 3 07:37:38 2018 - [info] Alive Slaves:
27 Fri Aug 3 07:37:38 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
28 Fri Aug 3 07:37:38 2018 - [info] GTID ON
29 Fri Aug 3 07:37:38 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
30 Fri Aug 3 07:37:38 2018 - [info] Primary candidate for the new Master (candidate_master is set)
31 Fri Aug 3 07:37:38 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
32 Fri Aug 3 07:37:38 2018 - [info] Checking slave configurations..
33 Fri Aug 3 07:37:38 2018 - [info] read_only=1 is not set on slave 192.168.1.102(192.168.1.102:3306).
34 Fri Aug 3 07:37:38 2018 - [info] Checking replication filtering settings..
35 Fri Aug 3 07:37:38 2018 - [info] binlog_do_db= , binlog_ignore_db=
36 Fri Aug 3 07:37:38 2018 - [info] Replication filtering check ok.
37 Fri Aug 3 07:37:38 2018 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.
38 Fri Aug 3 07:37:38 2018 - [info] Checking SSH publickey authentication settings on the current master..
39 ssh_exchange_identification: Connection closed by remote host
40 Fri Aug 3 07:37:38 2018 - [warning] HealthCheck: SSH to 192.168.1.101 is NOT reachable.
41 Fri Aug 3 07:37:38 2018 - [info]
42 192.168.1.101(192.168.1.101:3306) (current master)
43 +--192.168.1.102(192.168.1.102:3306)
44
45 Fri Aug 3 07:37:38 2018 - [info] Checking replication health on 192.168.1.102..
46 Fri Aug 3 07:37:38 2018 - [info] ok.
47 Fri Aug 3 07:37:38 2018 - [info] Checking master_ip_failover_script status:
48 Fri Aug 3 07:37:38 2018 - [info] /etc/masterha/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_ssh_port=3306
49 Fri Aug 3 07:37:38 2018 - [info] OK.
50 Fri Aug 3 07:37:38 2018 - [warning] shutdown_script is not defined.
51 Fri Aug 3 07:37:38 2018 - [info] Got exit code 0 (Not master dead).
52
53 MySQL Replication Health is OK.
54
55 [root@zlm3 07:40:03 ~]
56 #Fri Aug 3 07:40:03 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
57 Fri Aug 3 07:40:03 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
58 Fri Aug 3 07:40:03 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
59 ssh_exchange_identification: Connection closed by remote host
60 ^C
61
62 [root@zlm3 07:40:11 ~]
63 #masterha_check_status --conf=/etc/masterha/app1.conf
64 app1 (pid:5628) is running(0:PING_OK), master:192.168.1.101
Switch master to slave and make it become a new slave of new master.
1 [root@zlm3 08:21:27 ~]
2 #masterha_master_switch --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf --master_state=alive --new_master_host=192.168.1.102 --orig_master_is_new_slave --running_updates_limit=60
3 Fri Aug 3 08:21:29 2018 - [info] MHA::MasterRotate version 0.56.
4 Fri Aug 3 08:21:29 2018 - [info] Starting online master switch..
5 Fri Aug 3 08:21:29 2018 - [info]
6 Fri Aug 3 08:21:29 2018 - [info] * Phase 1: Configuration Check Phase..
7 Fri Aug 3 08:21:29 2018 - [info]
8 Fri Aug 3 08:21:29 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
9 Fri Aug 3 08:21:29 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
10 Fri Aug 3 08:21:29 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
11 Fri Aug 3 08:21:30 2018 - [info] GTID failover mode = 1
12 Fri Aug 3 08:21:30 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
13 Fri Aug 3 08:21:30 2018 - [info] Alive Slaves:
14 Fri Aug 3 08:21:30 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
15 Fri Aug 3 08:21:30 2018 - [info] GTID ON
16 Fri Aug 3 08:21:30 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
17 Fri Aug 3 08:21:30 2018 - [info] Primary candidate for the new Master (candidate_master is set)
18
19 It is better to execute FLUSH NO_WRITE_TO_BINLOG TABLES on the master before switching. Is it ok to execute on 192.168.1.101(192.168.1.101:3306)? (YES/no): yes
20 Fri Aug 3 08:21:33 2018 - [info] Executing FLUSH NO_WRITE_TO_BINLOG TABLES. This may take long time..
21 Fri Aug 3 08:21:33 2018 - [info] ok.
22 Fri Aug 3 08:21:33 2018 - [info] Checking MHA is not monitoring or doing failover..
23 Fri Aug 3 08:21:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterRotate.pm, ln142] Getting advisory lock failed on the current master. MHA Monitor runs on the current master. Stop MHA Manager/Monitor and try again.
24 Fri Aug 3 08:21:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ManagerUtil.pm, ln177] Got ERROR: at /usr/bin/masterha_master_switch line 53.
25
26 //It means that we should stop MHA-manager when donging switchover master.
27
28 [root@zlm3 08:21:33 ~]
29 #masterha_stop --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf
30 Stopped app1 successfully.
31 [1]+ Exit 1 masterha_manager --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf
32
33 [root@zlm3 08:28:07 ~]
34 #masterha_master_switch --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf --master_state=alive --new_master_host=192.168.1.102 --orig_master_is_new_slave --running_updates_limit=60
35 Fri Aug 3 08:28:21 2018 - [info] MHA::MasterRotate version 0.56.
36 Fri Aug 3 08:28:21 2018 - [info] Starting online master switch..
37 Fri Aug 3 08:28:21 2018 - [info]
38 Fri Aug 3 08:28:21 2018 - [info] * Phase 1: Configuration Check Phase..
39 Fri Aug 3 08:28:21 2018 - [info]
40 Fri Aug 3 08:28:21 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
41 Fri Aug 3 08:28:21 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
42 Fri Aug 3 08:28:21 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
43 Fri Aug 3 08:28:22 2018 - [info] GTID failover mode = 1
44 Fri Aug 3 08:28:22 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
45 Fri Aug 3 08:28:22 2018 - [info] Alive Slaves:
46 Fri Aug 3 08:28:22 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
47 Fri Aug 3 08:28:22 2018 - [info] GTID ON
48 Fri Aug 3 08:28:22 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
49 Fri Aug 3 08:28:22 2018 - [info] Primary candidate for the new Master (candidate_master is set)
50
51 It is better to execute FLUSH NO_WRITE_TO_BINLOG TABLES on the master before switching. Is it ok to execute on 192.168.1.101(192.168.1.101:3306)? (YES/no): yes
52 Fri Aug 3 08:28:25 2018 - [info] Executing FLUSH NO_WRITE_TO_BINLOG TABLES. This may take long time..
53 Fri Aug 3 08:28:25 2018 - [info] ok.
54 Fri Aug 3 08:28:25 2018 - [info] Checking MHA is not monitoring or doing failover..
55 Fri Aug 3 08:28:25 2018 - [info] Checking replication health on 192.168.1.102..
56 Fri Aug 3 08:28:25 2018 - [info] ok.
57 Fri Aug 3 08:28:25 2018 - [info] 192.168.1.102 can be new master.
58 Fri Aug 3 08:28:25 2018 - [info]
59 From:
60 192.168.1.101(192.168.1.101:3306) (current master)
61 +--192.168.1.102(192.168.1.102:3306)
62
63 To:
64 192.168.1.102(192.168.1.102:3306) (new master)
65 +--192.168.1.101(192.168.1.101:3306)
66
67 Starting master switch from 192.168.1.101(192.168.1.101:3306) to 192.168.1.102(192.168.1.102:3306)? (yes/NO): yes
68 Fri Aug 3 08:28:31 2018 - [info] Checking whether 192.168.1.102(192.168.1.102:3306) is ok for the new master..
69 Fri Aug 3 08:28:31 2018 - [info] ok.
70 Fri Aug 3 08:28:31 2018 - [info] 192.168.1.101(192.168.1.101:3306): SHOW SLAVE STATUS returned empty result. To check replication filtering rules, temporarily executing CHANGE MASTER to a dummy host.
71 Fri Aug 3 08:28:31 2018 - [info] 192.168.1.101(192.168.1.101:3306): Resetting slave pointing to the dummy host.
72 Fri Aug 3 08:28:31 2018 - [info] ** Phase 1: Configuration Check Phase completed.
73 Fri Aug 3 08:28:31 2018 - [info]
74 Fri Aug 3 08:28:31 2018 - [info] * Phase 2: Rejecting updates Phase..
75 Fri Aug 3 08:28:31 2018 - [info]
76 Fri Aug 3 08:28:31 2018 - [info] Executing master ip online change script to disable write on the current master:
77 Fri Aug 3 08:28:31 2018 - [info] /etc/masterha/master_ip_online_change --command=stop --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_user='zlm' --orig_master_password='zlmzlm' --new_master_host=192.168.1.102 --new_master_ip=192.168.1.102 --new_master_port=3306 --new_master_user='zlm' --new_master_password='zlmzlm' --orig_master_ssh_user=root --new_master_ssh_user=root --orig_master_ssh_port=3306 --new_master_ssh_port=3306 --orig_master_is_new_slave
78 Unknown option: new_master_ssh_port
79 Fri Aug 3 08:28:32 2018 116409 Set read_only on the new master.. ok.
80 Fri Aug 3 08:28:32 2018 125643 drop vip 10.33.101.239..
81 ssh_exchange_identification: Connection closed by remote host
82 Fri Aug 3 08:28:32 2018 142948 Waiting all running 1 threads are disconnected.. (max 1500 milliseconds)
83 {'Time' => '13435','db' => undef,'Id' => '21','User' => 'repl','State' => 'Master has sent all binlog to slave; waiting for more updates','Command' => 'Binlog Dump GTID','Info' => undef,'Host' => 'zlm3:40535'}
84 Fri Aug 3 08:28:32 2018 646769 Waiting all running 1 threads are disconnected.. (max 1000 milliseconds)
85 {'Time' => '13435','db' => undef,'Id' => '21','User' => 'repl','State' => 'Master has sent all binlog to slave; waiting for more updates','Command' => 'Binlog Dump GTID','Info' => undef,'Host' => 'zlm3:40535'}
86 Fri Aug 3 08:28:33 2018 149221 Waiting all running 1 threads are disconnected.. (max 500 milliseconds)
87 {'Time' => '13436','db' => undef,'Id' => '21','User' => 'repl','State' => 'Master has sent all binlog to slave; waiting for more updates','Command' => 'Binlog Dump GTID','Info' => undef,'Host' => 'zlm3:40535'}
88 Fri Aug 3 08:28:33 2018 650816 Set read_only=1 on the orig master.. ok.
89 Fri Aug 3 08:28:33 2018 653323 Waiting all running 1 queries are disconnected.. (max 500 milliseconds)
90 {'Time' => '13436','db' => undef,'Id' => '21','User' => 'repl','State' => 'Master has sent all binlog to slave; waiting for more updates','Command' => 'Binlog Dump GTID','Info' => undef,'Host' => 'zlm3:40535'}
91 Fri Aug 3 08:28:34 2018 154965 Killing all application threads..
92 Fri Aug 3 08:28:34 2018 167919 done.
93 Fri Aug 3 08:28:34 2018 - [info] ok.
94 Fri Aug 3 08:28:34 2018 - [info] Locking all tables on the orig master to reject updates from everybody (including root):
95 Fri Aug 3 08:28:34 2018 - [info] Executing FLUSH TABLES WITH READ LOCK..
96 Fri Aug 3 08:28:34 2018 - [info] ok.
97 Fri Aug 3 08:28:34 2018 - [info] Orig master binlog:pos is mysql-bin.000050:2361.
98 Fri Aug 3 08:28:34 2018 - [info] Waiting to execute all relay logs on 192.168.1.102(192.168.1.102:3306)..
99 Fri Aug 3 08:28:34 2018 - [info] master_pos_wait(mysql-bin.000050:2361) completed on 192.168.1.102(192.168.1.102:3306). Executed 0 events.
100 Fri Aug 3 08:28:34 2018 - [info] done.
101 Fri Aug 3 08:28:34 2018 - [info] Getting new master's binlog name and position..
102 Fri Aug 3 08:28:34 2018 - [info] mysql-bin.000003:2321
103 Fri Aug 3 08:28:34 2018 - [info] All other slaves should start replication from here. Statement should be: CHANGE MASTER TO MASTER_HOST='192.168.1.102', MASTER_PORT=3306, MASTER_AUTO_POSITION=1, MASTER_USER='repl', MASTER_PASSWORD='xxx';
104 Fri Aug 3 08:28:34 2018 - [info] Executing master ip online change script to allow write on the new master:
105 Fri Aug 3 08:28:34 2018 - [info] /etc/masterha/master_ip_online_change --command=start --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_user='zlm' --orig_master_password='zlmzlm' --new_master_host=192.168.1.102 --new_master_ip=192.168.1.102 --new_master_port=3306 --new_master_user='zlm' --new_master_password='zlmzlm' --orig_master_ssh_user=root --new_master_ssh_user=root --orig_master_ssh_port=3306 --new_master_ssh_port=3306 --orig_master_is_new_slave
106 Unknown option: new_master_ssh_port
107 Fri Aug 3 08:28:34 2018 327146 Set read_only=0 on the new master.
108 Fri Aug 3 08:28:34 2018 328259Add vip 10.33.101.239 on p3p1..
109 ssh_exchange_identification: Connection closed by remote host
110 Fri Aug 3 08:28:34 2018 - [info] ok.
111 Fri Aug 3 08:28:34 2018 - [info]
112 Fri Aug 3 08:28:34 2018 - [info] * Switching slaves in parallel..
113 Fri Aug 3 08:28:34 2018 - [info]
114 Fri Aug 3 08:28:34 2018 - [info] Unlocking all tables on the orig master:
115 Fri Aug 3 08:28:34 2018 - [info] Executing UNLOCK TABLES..
116 Fri Aug 3 08:28:34 2018 - [info] ok.
117 Fri Aug 3 08:28:34 2018 - [info] Starting orig master as a new slave..
118 Fri Aug 3 08:28:34 2018 - [info] Resetting slave 192.168.1.101(192.168.1.101:3306) and starting replication from the new master 192.168.1.102(192.168.1.102:3306)..
119 Fri Aug 3 08:28:34 2018 - [info] Executed CHANGE MASTER.
120 Fri Aug 3 08:28:35 2018 - [info] Slave started.
121 Fri Aug 3 08:28:35 2018 - [info] All new slave servers switched successfully.
122 Fri Aug 3 08:28:35 2018 - [info]
123 Fri Aug 3 08:28:35 2018 - [info] * Phase 5: New master cleanup phase..
124 Fri Aug 3 08:28:35 2018 - [info]
125 Fri Aug 3 08:28:35 2018 - [info] 192.168.1.102: Resetting slave info succeeded.
126 Fri Aug 3 08:28:35 2018 - [info] Switching master to 192.168.1.102(192.168.1.102:3306) completed successfully.
127
128 [root@zlm3 08:28:35 ~]
129 #
Check the master-slave replication status.
1 //New master(original slave)
2 (zlm@192.168.1.102 3306)[(none)]>show master status;
3 +------------------+----------+--------------+------------------+------------------------------------------------+
4 | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
5 +------------------+----------+--------------+------------------+------------------------------------------------+
6 | mysql-bin.000003 | 2321 | | | 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259 |
7 +------------------+----------+--------------+------------------+------------------------------------------------+
8 1 row in set (0.00 sec)
9
10 (zlm@192.168.1.102 3306)[(none)]>show slave statusG
11 Empty set (0.00 sec)
12
13 //New slave(original master)
14 (zlm@192.168.1.101 3306)[(none)]>show master status;
15 +------------------+----------+--------------+------------------+------------------------------------------------+
16 | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
17 +------------------+----------+--------------+------------------+------------------------------------------------+
18 | mysql-bin.000050 | 2361 | | | 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259 |
19 +------------------+----------+--------------+------------------+------------------------------------------------+
20 1 row in set (0.01 sec)
21
22 (zlm@192.168.1.101 3306)[(none)]>show slave statusG
23 *************************** 1. row ***************************
24 Slave_IO_State: Waiting for master to send event
25 Master_Host: 192.168.1.102
26 Master_User: repl
27 Master_Port: 3306
28 Connect_Retry: 60
29 Master_Log_File: mysql-bin.000003
30 Read_Master_Log_Pos: 2321
31 Relay_Log_File: relay-bin.000002
32 Relay_Log_Pos: 398
33 Relay_Master_Log_File: mysql-bin.000003
34 Slave_IO_Running: Yes
35 Slave_SQL_Running: Yes
36 Replicate_Do_DB:
37 Replicate_Ignore_DB:
38 Replicate_Do_Table:
39 Replicate_Ignore_Table:
40 Replicate_Wild_Do_Table:
41 Replicate_Wild_Ignore_Table:
42 Last_Errno: 0
43 Last_Error:
44 Skip_Counter: 0
45 Exec_Master_Log_Pos: 2321
46 Relay_Log_Space: 591
47 Until_Condition: None
48 Until_Log_File:
49 Until_Log_Pos: 0
50 Master_SSL_Allowed: No
51 Master_SSL_CA_File:
52 Master_SSL_CA_Path:
53 Master_SSL_Cert:
54 Master_SSL_Cipher:
55 Master_SSL_Key:
56 Seconds_Behind_Master: 0
57 Master_SSL_Verify_Server_Cert: No
58 Last_IO_Errno: 0
59 Last_IO_Error:
60 Last_SQL_Errno: 0
61 Last_SQL_Error:
62 Replicate_Ignore_Server_Ids:
63 Master_Server_Id: 1023306
64 Master_UUID: 842ea497-9551-11e8-83ca-080027de0e0e
65 Master_Info_File: mysql.slave_master_info
66 SQL_Delay: 0
67 SQL_Remaining_Delay: NULL
68 Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
69 Master_Retry_Count: 86400
70 Master_Bind:
71 Last_IO_Error_Timestamp:
72 Last_SQL_Error_Timestamp:
73 Master_SSL_Crl:
74 Master_SSL_Crlpath:
75 Retrieved_Gtid_Set:
76 Executed_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259
77 Auto_Position: 1
78 Replicate_Rewrite_DB:
79 Channel_Name:
80 Master_TLS_Version:
81 1 row in set (0.00 sec)
Check the log of MasterHA on zlm3.
1 [root@zlm3 08:28:35 ~]
2 #cd /var/log/masterha/app1
3
4 [root@zlm3 08:29:12 /var/log/masterha/app1]
5 #cat app1.log
6 Fri Aug 3 07:39:13 2018 - [info] MHA::MasterMonitor version 0.56.
7 Fri Aug 3 07:39:14 2018 - [info] GTID failover mode = 1
8 Fri Aug 3 07:39:14 2018 - [info] Dead Servers:
9 Fri Aug 3 07:39:14 2018 - [info] Alive Servers:
10 Fri Aug 3 07:39:14 2018 - [info] 192.168.1.101(192.168.1.101:3306)
11 Fri Aug 3 07:39:14 2018 - [info] 192.168.1.102(192.168.1.102:3306)
12 Fri Aug 3 07:39:14 2018 - [info] Alive Slaves:
13 Fri Aug 3 07:39:14 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
14 Fri Aug 3 07:39:14 2018 - [info] GTID ON
15 Fri Aug 3 07:39:14 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
16 Fri Aug 3 07:39:14 2018 - [info] Primary candidate for the new Master (candidate_master is set)
17 Fri Aug 3 07:39:14 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
18 Fri Aug 3 07:39:14 2018 - [info] Checking slave configurations..
19 Fri Aug 3 07:39:14 2018 - [info] read_only=1 is not set on slave 192.168.1.102(192.168.1.102:3306).
20 Fri Aug 3 07:39:14 2018 - [info] Checking replication filtering settings..
21 Fri Aug 3 07:39:14 2018 - [info] binlog_do_db= , binlog_ignore_db=
22 Fri Aug 3 07:39:14 2018 - [info] Replication filtering check ok.
23 Fri Aug 3 07:39:14 2018 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.
24 Fri Aug 3 07:39:14 2018 - [info] Checking SSH publickey authentication settings on the current master..
25 Fri Aug 3 07:39:14 2018 - [warning] HealthCheck: SSH to 192.168.1.101 is NOT reachable.
26 Fri Aug 3 07:39:14 2018 - [info]
27 192.168.1.101(192.168.1.101:3306) (current master)
28 +--192.168.1.102(192.168.1.102:3306)
29
30 Fri Aug 3 07:39:14 2018 - [info] Checking master_ip_failover_script status:
31 Fri Aug 3 07:39:14 2018 - [info] /etc/masterha/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_ssh_port=3306
32 Fri Aug 3 07:39:14 2018 - [info] OK.
33 Fri Aug 3 07:39:14 2018 - [warning] shutdown_script is not defined.
34 Fri Aug 3 07:39:14 2018 - [info] Set master ping interval 1 seconds.
35 Fri Aug 3 07:39:14 2018 - [warning] secondary_check_script is not defined. It is highly recommended setting it to check master reachability from two or more routes.
36 Fri Aug 3 07:39:14 2018 - [info] Starting ping health check on 192.168.1.101(192.168.1.101:3306)..
37 Fri Aug 3 07:39:14 2018 - [info] Ping(SELECT) succeeded, waiting until MySQL doesn't respond..
38 Fri Aug 3 07:39:27 2018 - [info] Got terminate signal. Exit.
39 Fri Aug 3 07:40:03 2018 - [info] MHA::MasterMonitor version 0.56.
40 Fri Aug 3 07:40:04 2018 - [info] GTID failover mode = 1
41 Fri Aug 3 07:40:04 2018 - [info] Dead Servers:
42 Fri Aug 3 07:40:04 2018 - [info] Alive Servers:
43 Fri Aug 3 07:40:04 2018 - [info] 192.168.1.101(192.168.1.101:3306)
44 Fri Aug 3 07:40:04 2018 - [info] 192.168.1.102(192.168.1.102:3306)
45 Fri Aug 3 07:40:04 2018 - [info] Alive Slaves:
46 Fri Aug 3 07:40:04 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
47 Fri Aug 3 07:40:04 2018 - [info] GTID ON
48 Fri Aug 3 07:40:04 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
49 Fri Aug 3 07:40:04 2018 - [info] Primary candidate for the new Master (candidate_master is set)
50 Fri Aug 3 07:40:04 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
51 Fri Aug 3 07:40:04 2018 - [info] Checking slave configurations..
52 Fri Aug 3 07:40:04 2018 - [info] read_only=1 is not set on slave 192.168.1.102(192.168.1.102:3306).
53 Fri Aug 3 07:40:04 2018 - [info] Checking replication filtering settings..
54 Fri Aug 3 07:40:04 2018 - [info] binlog_do_db= , binlog_ignore_db=
55 Fri Aug 3 07:40:04 2018 - [info] Replication filtering check ok.
56 Fri Aug 3 07:40:04 2018 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.
57 Fri Aug 3 07:40:04 2018 - [info] Checking SSH publickey authentication settings on the current master..
58 Fri Aug 3 07:40:04 2018 - [warning] HealthCheck: SSH to 192.168.1.101 is NOT reachable.
59 Fri Aug 3 07:40:04 2018 - [info]
60 192.168.1.101(192.168.1.101:3306) (current master)
61 +--192.168.1.102(192.168.1.102:3306)
62
63 Fri Aug 3 07:40:04 2018 - [info] Checking master_ip_failover_script status:
64 Fri Aug 3 07:40:04 2018 - [info] /etc/masterha/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_ssh_port=3306
65 Fri Aug 3 07:40:04 2018 - [info] OK.
66 Fri Aug 3 07:40:04 2018 - [warning] shutdown_script is not defined.
67 Fri Aug 3 07:40:04 2018 - [info] Set master ping interval 1 seconds.
68 Fri Aug 3 07:40:04 2018 - [warning] secondary_check_script is not defined. It is highly recommended setting it to check master reachability from two or more routes.
69 Fri Aug 3 07:40:04 2018 - [info] Starting ping health check on 192.168.1.101(192.168.1.101:3306)..
70 Fri Aug 3 07:40:04 2018 - [info] Ping(SELECT) succeeded, waiting until MySQL doesn't respond..
71 Fri Aug 3 08:28:07 2018 - [info] Got terminate signal. Exit.
Test 2：Manual master failover
Execute "masterha_master_switch" script again to generate a failover on zlm2.
1 [root@zlm2 10:11:10 ~]
2 #masterha_master_switch --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf --dead_master_host=192.168.1.102 --master_state=dead --new_master_host=192.168.1.101 --ignore_last_failover
3 --dead_master_ip=<dead_master_ip> is not set. Using 192.168.1.102.
4 --dead_master_port=<dead_master_port> is not set. Using 3306.
5 Fri Aug 3 10:11:50 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
6 Fri Aug 3 10:11:50 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
7 Fri Aug 3 10:11:50 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
8 Fri Aug 3 10:11:50 2018 - [info] MHA::MasterFailover version 0.56.
9 Fri Aug 3 10:11:50 2018 - [info] Starting master failover.
10 Fri Aug 3 10:11:50 2018 - [info]
11 Fri Aug 3 10:11:50 2018 - [info] * Phase 1: Configuration Check Phase..
12 Fri Aug 3 10:11:50 2018 - [info]
13 Fri Aug 3 10:11:51 2018 - [info] GTID failover mode = 1
14 Fri Aug 3 10:11:51 2018 - [info] Dead Servers:
15 Fri Aug 3 10:11:51 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterFailover.pm, ln187] None of server is dead. Stop failover.
16 Fri Aug 3 10:11:51 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ManagerUtil.pm, ln177] Got ERROR: at /usr/bin/masterha_master_switch line 53.
17
18 //Stop mysqld of master on zlm3.
19 [root@zlm3 10:13:56 ~]
20 #mysqladmin shutdown
21
22 [root@zlm3 10:14:04 ~]
23 #ps aux|grep mysqld
24 mysql 5368 0.0 19.6 1110812 200292 pts/0 Sl 04:44 0:09 mysqld --defaults-file=/data/mysql/mysql3306/my.cnf
25 root 8827 0.0 0.0 112640 960 pts/0 R+ 10:14 0:00 grep --color=auto mysqld
26
27 [root@zlm3 10:14:08 ~]
28 #ps aux|grep mysqld
29 mysql 5368 0.0 19.6 1110812 200292 pts/0 Sl 04:44 0:09 mysqld --defaults-file=/data/mysql/mysql3306/my.cnf
30 root 8833 0.0 0.0 112640 960 pts/0 R+ 10:14 0:00 grep --color=auto mysqld
31
32 [root@zlm3 10:14:12 ~]
33 #ps aux|grep mysqld
34 mysql 5368 0.0 19.1 995088 194692 pts/0 Sl 04:44 0:09 mysqld --defaults-file=/data/mysql/mysql3306/my.cnf
35 root 8839 0.0 0.0 112640 960 pts/0 R+ 10:14 0:00 grep --color=auto mysqld
36
37 [root@zlm3 10:14:23 ~]
38 #ps aux|grep mysqld
39 root 8854 0.0 0.0 112640 960 pts/0 R+ 10:14 0:00 grep --color=auto mysqld
40
41 //Execute the above command again on zlm2.
42 [root@zlm2 10:15:43 ~]
43 #masterha_master_switch --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf --dead_master_host=192.168.1.102 --master_state=dead --new_master_host=192.168.1.101 --ignore_last_failover
44 --dead_master_ip=<dead_master_ip> is not set. Using 192.168.1.102.
45 --dead_master_port=<dead_master_port> is not set. Using 3306.
46 Fri Aug 3 10:15:43 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
47 Fri Aug 3 10:15:43 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
48 Fri Aug 3 10:15:43 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
49 Fri Aug 3 10:15:43 2018 - [info] MHA::MasterFailover version 0.56.
50 Fri Aug 3 10:15:43 2018 - [info] Starting master failover.
51 Fri Aug 3 10:15:43 2018 - [info]
52 Fri Aug 3 10:15:43 2018 - [info] * Phase 1: Configuration Check Phase..
53 Fri Aug 3 10:15:43 2018 - [info]
54 Fri Aug 3 10:15:44 2018 - [info] GTID failover mode = 1
55 Fri Aug 3 10:15:44 2018 - [info] Dead Servers:
56 Fri Aug 3 10:15:44 2018 - [info] 192.168.1.102(192.168.1.102:3306)
57 Fri Aug 3 10:15:44 2018 - [info] Checking master reachability via MySQL(double check)...
58 Fri Aug 3 10:15:44 2018 - [info] ok.
59 Fri Aug 3 10:15:44 2018 - [info] Alive Servers:
60 Fri Aug 3 10:15:44 2018 - [info] 192.168.1.101(192.168.1.101:3306)
61 Fri Aug 3 10:15:44 2018 - [info] Alive Slaves:
62 Fri Aug 3 10:15:44 2018 - [info] 192.168.1.101(192.168.1.101:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
63 Fri Aug 3 10:15:44 2018 - [info] GTID ON
64 Fri Aug 3 10:15:44 2018 - [info] Replicating from 192.168.1.102(192.168.1.102:3306)
65 Fri Aug 3 10:15:44 2018 - [info] Primary candidate for the new Master (candidate_master is set)
66 Master 192.168.1.102(192.168.1.102:3306) is dead. Proceed? (yes/NO): yes
67 Fri Aug 3 10:15:46 2018 - [info] Starting GTID based failover.
68 Fri Aug 3 10:15:46 2018 - [info]
69 Fri Aug 3 10:15:46 2018 - [info] ** Phase 1: Configuration Check Phase completed.
70 Fri Aug 3 10:15:46 2018 - [info]
71 Fri Aug 3 10:15:46 2018 - [info] * Phase 2: Dead Master Shutdown Phase..
72 Fri Aug 3 10:15:46 2018 - [info]
73 ssh: connect to host 192.168.1.102 port 3306: Connection refused
74 Fri Aug 3 10:15:46 2018 - [warning] HealthCheck: SSH to 192.168.1.102 is NOT reachable.
75 Fri Aug 3 10:15:46 2018 - [info] Forcing shutdown so that applications never connect to the current master..
76 Fri Aug 3 10:15:46 2018 - [info] Executing master IP deactivation script:
77 Fri Aug 3 10:15:46 2018 - [info] /etc/masterha/master_ip_failover --orig_master_host=192.168.1.102 --orig_master_ip=192.168.1.102 --orig_master_port=3306 --command=stop --orig_master_ssh_port=3306
78 ssh: connect to host 192.168.1.102 port 3306: Connection refused
79 Fri Aug 3 10:15:48 2018 - [info] done.
80 Fri Aug 3 10:15:48 2018 - [warning] shutdown_script is not set. Skipping explicit shutting down of the dead master.
81 Fri Aug 3 10:15:48 2018 - [info] * Phase 2: Dead Master Shutdown Phase completed.
82 Fri Aug 3 10:15:48 2018 - [info]
83 Fri Aug 3 10:15:48 2018 - [info] * Phase 3: Master Recovery Phase..
84 Fri Aug 3 10:15:48 2018 - [info]
85 Fri Aug 3 10:15:48 2018 - [info] * Phase 3.1: Getting Latest Slaves Phase..
86 Fri Aug 3 10:15:48 2018 - [info]
87 Fri Aug 3 10:15:48 2018 - [info] The latest binary log file/position on all slaves is mysql-bin.000003:2321
88 Fri Aug 3 10:15:48 2018 - [info] Latest slaves (Slaves that received relay log files to the latest):
89 Fri Aug 3 10:15:48 2018 - [info] 192.168.1.101(192.168.1.101:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
90 Fri Aug 3 10:15:48 2018 - [info] GTID ON
91 Fri Aug 3 10:15:48 2018 - [info] Replicating from 192.168.1.102(192.168.1.102:3306)
92 Fri Aug 3 10:15:48 2018 - [info] Primary candidate for the new Master (candidate_master is set)
93 Fri Aug 3 10:15:48 2018 - [info] The oldest binary log file/position on all slaves is mysql-bin.000003:2321
94 Fri Aug 3 10:15:48 2018 - [info] Oldest slaves:
95 Fri Aug 3 10:15:48 2018 - [info] 192.168.1.101(192.168.1.101:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
96 Fri Aug 3 10:15:48 2018 - [info] GTID ON
97 Fri Aug 3 10:15:48 2018 - [info] Replicating from 192.168.1.102(192.168.1.102:3306)
98 Fri Aug 3 10:15:48 2018 - [info] Primary candidate for the new Master (candidate_master is set)
99 Fri Aug 3 10:15:48 2018 - [info]
100 Fri Aug 3 10:15:48 2018 - [info] * Phase 3.3: Determining New Master Phase..
101 Fri Aug 3 10:15:48 2018 - [info]
102 Fri Aug 3 10:15:48 2018 - [info] 192.168.1.101 can be new master.
103 Fri Aug 3 10:15:48 2018 - [info] New master is 192.168.1.101(192.168.1.101:3306)
104 Fri Aug 3 10:15:48 2018 - [info] Starting master failover..
105 Fri Aug 3 10:15:48 2018 - [info]
106 From:
107 192.168.1.102(192.168.1.102:3306) (current master)
108 +--192.168.1.101(192.168.1.101:3306)
109
110 To:
111 192.168.1.101(192.168.1.101:3306) (new master)
112
113 Starting master switch from 192.168.1.102(192.168.1.102:3306) to 192.168.1.101(192.168.1.101:3306)? (yes/NO): yes
114 Fri Aug 3 10:15:56 2018 - [info] New master decided manually is 192.168.1.101(192.168.1.101:3306)
115 Fri Aug 3 10:15:56 2018 - [info]
116 Fri Aug 3 10:15:56 2018 - [info] * Phase 3.3: New Master Recovery Phase..
117 Fri Aug 3 10:15:56 2018 - [info]
118 Fri Aug 3 10:15:56 2018 - [info] Waiting all logs to be applied..
119 Fri Aug 3 10:15:56 2018 - [info] done.
120 Fri Aug 3 10:15:56 2018 - [info] Getting new master's binlog name and position..
121 Fri Aug 3 10:15:56 2018 - [info] mysql-bin.000051:190
122 Fri Aug 3 10:15:56 2018 - [info] All other slaves should start replication from here. Statement should be: CHANGE MASTER TO MASTER_HOST='192.168.1.101', MASTER_PORT=3306, MASTER_AUTO_POSITION=1, MASTER_USER='repl', MASTER_PASSWORD='xxx';
123 Fri Aug 3 10:15:56 2018 - [info] Master Recovery succeeded. File:Pos:Exec_Gtid_Set: mysql-bin.000051, 190, 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259
124 Fri Aug 3 10:15:56 2018 - [info] Executing master IP activate script:
125 Fri Aug 3 10:15:56 2018 - [info] /etc/masterha/master_ip_failover --command=start --ssh_user=root --orig_master_host=192.168.1.102 --orig_master_ip=192.168.1.102 --orig_master_port=3306 --new_master_host=192.168.1.101 --new_master_ip=192.168.1.101 --new_master_port=3306 --new_master_user='zlm' --new_master_password='zlmzlm' --orig_master_ssh_port=3306 --new_master_ssh_port=3306
126 Unknown option: new_master_ssh_port
127 Set read_only=0 on the new master.
128 ssh_exchange_identification: Connection closed by remote host
129 Fri Aug 3 10:15:56 2018 - [info] OK.
130 Fri Aug 3 10:15:56 2018 - [info] ** Finished master recovery successfully.
131 Fri Aug 3 10:15:56 2018 - [info] * Phase 3: Master Recovery Phase completed.
132 Fri Aug 3 10:15:56 2018 - [info]
133 Fri Aug 3 10:15:56 2018 - [info] * Phase 4: Slaves Recovery Phase..
134 Fri Aug 3 10:15:56 2018 - [info]
135 Fri Aug 3 10:15:56 2018 - [info]
136 Fri Aug 3 10:15:56 2018 - [info] * Phase 4.1: Starting Slaves in parallel..
137 Fri Aug 3 10:15:56 2018 - [info]
138 Fri Aug 3 10:15:56 2018 - [info] All new slave servers recovered successfully.
139 Fri Aug 3 10:15:56 2018 - [info]
140 Fri Aug 3 10:15:56 2018 - [info] * Phase 5: New master cleanup phase..
141 Fri Aug 3 10:15:56 2018 - [info]
142 Fri Aug 3 10:15:56 2018 - [info] Resetting slave info on the new master..
143 Fri Aug 3 10:15:56 2018 - [info] 192.168.1.101: Resetting slave info succeeded.
144 Fri Aug 3 10:15:56 2018 - [info] Master failover to 192.168.1.101(192.168.1.101:3306) completed successfully.
145 Fri Aug 3 10:15:56 2018 - [info]
146
147 ----- Failover Report -----
148
149 app1: MySQL Master failover 192.168.1.102(192.168.1.102:3306) to 192.168.1.101(192.168.1.101:3306) succeeded
150
151 Master 192.168.1.102(192.168.1.102:3306) is down!
152
153 Check MHA Manager logs at zlm2 for details.
154
155 Started manual(interactive) failover.
156 Invalidated master IP address on 192.168.1.102(192.168.1.102:3306)
157 Selected 192.168.1.101(192.168.1.101:3306) as a new master.
158 192.168.1.101(192.168.1.101:3306): OK: Applying all logs succeeded.
159 192.168.1.101(192.168.1.101:3306): OK: Activated master IP address.
160 192.168.1.101(192.168.1.101:3306): Resetting slave info succeeded.
161 Master failover to 192.168.1.101(192.168.1.101:3306) completed successfully.
Check the status of new master on zlm2.
1 (zlm@192.168.1.101 3306)[(none)]>show master status;
2 +------------------+----------+--------------+------------------+------------------------------------------------+
3 | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
4 +------------------+----------+--------------+------------------+------------------------------------------------+
5 | mysql-bin.000051 | 190 | | | 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259 |
6 +------------------+----------+--------------+------------------+------------------------------------------------+
7 1 row in set (0.00 sec)
8
9 (zlm@192.168.1.101 3306)[(none)]>show slave statusG
10 Empty set (0.00 sec)
Check the file and log on MasterHA.
1 [root@zlm2 10:15:56 ~]
2 #cd /var/log/masterha/app1
3
4 [root@zlm2 10:20:04 /var/log/masterha/app1]
5 #ls -l
6 total 4
7 -rw-r--r-- 1 root root 0 Aug 3 10:15 app1.failover.complete
8 -rw-r--r-- 1 root root 3883 Aug 2 11:29 app1.log
9
10 //The option of "--ignore_last_failover" can neglect the influence of existence of "app1.failover.complete".Otherwise,the failover operation will be terminated by error.
11 //This file will be created after a failover operation and it will be created only on the original slave who wants to become a new master.
12
13 [root@zlm2 10:20:05 /var/log/masterha/app1]
14 #cat app1.log
15 Thu Aug 2 11:12:03 2018 - [info] MHA::MasterMonitor version 0.56.
16 Thu Aug 2 11:12:04 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln301] Got MySQL error when connecting 192.168.1.101(192.168.1.101:3306) :1045:Access denied for user 'root'@'zlm2' (using password: NO), but this is not a MySQL crash. Check MySQL server settings.
17 at /usr/share/perl5/vendor_perl/MHA/ServerManager.pm line 297.
18 Thu Aug 2 11:12:04 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln301] Got MySQL error when connecting 192.168.1.102(192.168.1.102:3306) :1045:Access denied for user 'root'@'zlm2' (using password: NO), but this is not a MySQL crash. Check MySQL server settings.
19 at /usr/share/perl5/vendor_perl/MHA/ServerManager.pm line 297.
20 Thu Aug 2 11:12:05 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln309] Got fatal error, stopping operations
21 Thu Aug 2 11:12:05 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln424] Error happened on checking configurations. at /usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm line 326.
22 Thu Aug 2 11:12:05 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln523] Error happened on monitoring servers.
23 Thu Aug 2 11:12:05 2018 - [info] Got exit code 1 (Not master dead).
24 Thu Aug 2 11:13:56 2018 - [info] MHA::MasterMonitor version 0.56.
25 Thu Aug 2 11:13:57 2018 - [info] GTID failover mode = 1
26 Thu Aug 2 11:13:57 2018 - [info] Dead Servers:
27 Thu Aug 2 11:13:57 2018 - [info] Alive Servers:
28 Thu Aug 2 11:13:57 2018 - [info] 192.168.1.101(192.168.1.101:3306)
29 Thu Aug 2 11:13:57 2018 - [info] 192.168.1.102(192.168.1.102:3306)
30 Thu Aug 2 11:13:57 2018 - [info] Alive Slaves:
31 Thu Aug 2 11:13:57 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
32 Thu Aug 2 11:13:57 2018 - [info] GTID ON
33 Thu Aug 2 11:13:57 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
34 Thu Aug 2 11:13:57 2018 - [info] Primary candidate for the new Master (candidate_master is set)
35 Thu Aug 2 11:13:57 2018 - [info] Current Alive Master: 192.168.1.101(192.168.1.101:3306)
36 Thu Aug 2 11:13:57 2018 - [info] Checking slave configurations..
37 Thu Aug 2 11:13:57 2018 - [info] read_only=1 is not set on slave 192.168.1.102(192.168.1.102:3306).
38 Thu Aug 2 11:13:57 2018 - [info] Checking replication filtering settings..
39 Thu Aug 2 11:13:57 2018 - [info] binlog_do_db= , binlog_ignore_db=
40 Thu Aug 2 11:13:57 2018 - [info] Replication filtering check ok.
41 Thu Aug 2 11:13:57 2018 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.
42 Thu Aug 2 11:13:57 2018 - [info] Checking SSH publickey authentication settings on the current master..
43 Thu Aug 2 11:13:57 2018 - [warning] HealthCheck: SSH to 192.168.1.101 is NOT reachable.
44 Thu Aug 2 11:13:57 2018 - [info]
45 192.168.1.101(192.168.1.101:3306) (current master)
46 +--192.168.1.102(192.168.1.102:3306)
47
48 Thu Aug 2 11:13:57 2018 - [info] Checking master_ip_failover_script status:
49 Thu Aug 2 11:13:57 2018 - [info] /etc/masterha/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --orig_master_ssh_port=3306
50 Thu Aug 2 11:13:57 2018 - [info] OK.
51 Thu Aug 2 11:13:57 2018 - [warning] shutdown_script is not defined.
52 Thu Aug 2 11:13:57 2018 - [info] Set master ping interval 1 seconds.
53 Thu Aug 2 11:13:57 2018 - [warning] secondary_check_script is not defined. It is highly recommended setting it to check master reachability from two or more routes.
54 Thu Aug 2 11:13:57 2018 - [info] Starting ping health check on 192.168.1.101(192.168.1.101:3306)..
55 Thu Aug 2 11:13:57 2018 - [info] Ping(SELECT) succeeded, waiting until MySQL doesn't respond..
56 Thu Aug 2 11:29:51 2018 - [info] Got terminate signal. Exit.
Test3: Automation of master switchover.
Repair the salve replication on zlm3.
1 [root@zlm3 10:14:24 ~]
2 #mysql
3 Welcome to the MySQL monitor. Commands end with ; or g.
4 Your MySQL connection id is 3
5 Server version: 5.7.21-log MySQL Community Server (GPL)
6
7 Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
8
9 Oracle is a registered trademark of Oracle Corporation and/or its
10 affiliates. Other names may be trademarks of their respective
11 owners.
12
13 Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
14
15 (zlm@192.168.1.102 3306)[(none)]>change master to
16 -> master_host='192.168.1.101',
17 -> master_port=3306,
18 -> master_user='repl',
19 -> master_password='repl4slave',
20 -> master_auto_position=1;
21 Query OK, 0 rows affected, 2 warnings (0.02 sec)
22
23 (zlm@192.168.1.102 3306)[(none)]>show slave statusG
24 *************************** 1. row ***************************
25 Slave_IO_State: Waiting for master to send event
26 Master_Host: 192.168.1.101
27 Master_User: repl
28 Master_Port: 3306
29 Connect_Retry: 60
30 Master_Log_File: mysql-bin.000051
31 Read_Master_Log_Pos: 190
32 Relay_Log_File: relay-bin.000002
33 Relay_Log_Pos: 355
34 Relay_Master_Log_File: mysql-bin.000051
35 Slave_IO_Running: Yes
36 Slave_SQL_Running: Yes
37 Replicate_Do_DB:
38 Replicate_Ignore_DB:
39 Replicate_Do_Table:
40 Replicate_Ignore_Table:
41 Replicate_Wild_Do_Table:
42 Replicate_Wild_Ignore_Table:
43 Last_Errno: 0
44 Last_Error:
45 Skip_Counter: 0
46 Exec_Master_Log_Pos: 190
47 Relay_Log_Space: 548
48 Until_Condition: None
49 Until_Log_File:
50 Until_Log_Pos: 0
51 Master_SSL_Allowed: No
52 Master_SSL_CA_File:
53 Master_SSL_CA_Path:
54 Master_SSL_Cert:
55 Master_SSL_Cipher:
56 Master_SSL_Key:
57 Seconds_Behind_Master: 0
58 Master_SSL_Verify_Server_Cert: No
59 Last_IO_Errno: 0
60 Last_IO_Error:
61 Last_SQL_Errno: 0
62 Last_SQL_Error:
63 Replicate_Ignore_Server_Ids:
64 Master_Server_Id: 1013306
65 Master_UUID: 1b7181ee-6eaf-11e8-998e-080027de0e0e
66 Master_Info_File: mysql.slave_master_info
67 SQL_Delay: 0
68 SQL_Remaining_Delay: NULL
69 Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
70 Master_Retry_Count: 86400
71 Master_Bind:
72 Last_IO_Error_Timestamp:
73 Last_SQL_Error_Timestamp:
74 Master_SSL_Crl:
75 Master_SSL_Crlpath:
76 Retrieved_Gtid_Set:
77 Executed_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259
78 Auto_Position: 1
79 Replicate_Rewrite_DB:
80 Channel_Name:
81 Master_TLS_Version:
82 1 row in set (0.00 sec)
Start MasterHA-manager.
1 [root@zlm3 10:48:00 /var/log/masterha/app1]
2 #nohup masterha_manager --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf &
3 [1] 9265
4 nohup: ignoring input and appending output to ‘nohup.out’
5
6 [root@zlm3 10:48:12 /var/log/masterha/app1]
7 #ls -l
8 total 24
9 -rw-r--r-- 1 root root 16370 Aug 3 10:48 app1.log
10 -rw-r--r-- 1 root root 35 Aug 3 10:48 app1.master_status.health //This file is created only when MasterHA-manager is running.It will continuously record the health status between slave and master.
11 -rw------- 1 root root 371 Aug 3 10:48 nohup.out
12
13 [root@zlm3 10:48:14 /var/log/masterha/app1]
14 #cat nohup.out
15 Fri Aug 3 10:48:12 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
16 Fri Aug 3 10:48:12 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
17 Fri Aug 3 10:48:12 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
18 ssh_exchange_identification: Connection closed by remote host
19
20 [root@zlm3 10:48:26 /var/log/masterha/app1]
21 #cat app1.master_status.health
22 9265 0:PING_OK master:192.168.1.101
23 [root@zlm3 10:48:31 /var/log/masterha/app1]
24 #ps aux|grep manager
25 root 9265 0.6 2.1 299172 21516 pts/1 S 10:48 0:00 perl /usr/bin/masterha_manager --conf=/etc/masterha/app1.conf --global_conf=/etc/masterha/masterha_default.conf
26 root 9332 0.0 0.0 112640 960 pts/1 R+ 10:48 0:00 grep --color=auto manager
Kill mysqld on zlm2 to pretend the master is dead.
1 [root@zlm2 10:54:31 /var/log/masterha/app1]
2 #pkill mysqld
3
4 [root@zlm2 10:55:28 /var/log/masterha/app1]
5 #ps aux|grep mysqld
6 root 6067 0.0 0.0 112640 960 pts/1 R+ 10:55 0:00 grep --color=auto mysqld
Observe the app1.log on zlm3.
1 [root@zlm3 10:54:59 /var/log/masterha/app1]
2 #echo ''> app1.log
3
4 [root@zlm3 10:55:17 /var/log/masterha/app1]
5 #tail -f app1.log
6
7 Fri Aug 3 10:55:29 2018 - [warning] Got error on MySQL select ping: 2006 (MySQL server has gone away)
8 Fri Aug 3 10:55:29 2018 - [info] Executing SSH check script: exit 0
9 Fri Aug 3 10:55:29 2018 - [warning] HealthCheck: SSH to 192.168.1.101 is NOT reachable.
10 Fri Aug 3 10:55:30 2018 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.1.101' (111))
11 Fri Aug 3 10:55:30 2018 - [warning] Connection failed 2 time(s)..
12 Fri Aug 3 10:55:31 2018 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.1.101' (111))
13 Fri Aug 3 10:55:31 2018 - [warning] Connection failed 3 time(s)..
14 Fri Aug 3 10:55:32 2018 - [warning] Got error on MySQL connect: 2003 (Can't connect to MySQL server on '192.168.1.101' (111))
15 Fri Aug 3 10:55:32 2018 - [warning] Connection failed 4 time(s)..
16 Fri Aug 3 10:55:32 2018 - [warning] Master is not reachable from health checker!
17 Fri Aug 3 10:55:32 2018 - [warning] Master 192.168.1.101(192.168.1.101:3306) is not reachable!
18 Fri Aug 3 10:55:32 2018 - [warning] SSH is NOT reachable.
19 Fri Aug 3 10:55:32 2018 - [info] Connecting to a master server failed. Reading configuration file /etc/masterha/masterha_default.conf and /etc/masterha/app1.conf again, and trying to connect to all servers to check server status..
20 Fri Aug 3 10:55:32 2018 - [info] Reading default configuration from /etc/masterha/masterha_default.conf..
21 Fri Aug 3 10:55:32 2018 - [info] Reading application default configuration from /etc/masterha/app1.conf..
22 Fri Aug 3 10:55:32 2018 - [info] Reading server configuration from /etc/masterha/app1.conf..
23 Fri Aug 3 10:55:33 2018 - [info] GTID failover mode = 1
24 Fri Aug 3 10:55:33 2018 - [info] Dead Servers:
25 Fri Aug 3 10:55:33 2018 - [info] 192.168.1.101(192.168.1.101:3306)
26 Fri Aug 3 10:55:33 2018 - [info] Alive Servers:
27 Fri Aug 3 10:55:33 2018 - [info] 192.168.1.102(192.168.1.102:3306)
28 Fri Aug 3 10:55:33 2018 - [info] Alive Slaves:
29 Fri Aug 3 10:55:33 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
30 Fri Aug 3 10:55:33 2018 - [info] GTID ON
31 Fri Aug 3 10:55:33 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
32 Fri Aug 3 10:55:33 2018 - [info] Primary candidate for the new Master (candidate_master is set)
33 Fri Aug 3 10:55:33 2018 - [info] Checking slave configurations..
34 Fri Aug 3 10:55:33 2018 - [info] read_only=1 is not set on slave 192.168.1.102(192.168.1.102:3306).
35 Fri Aug 3 10:55:33 2018 - [info] Checking replication filtering settings..
36 Fri Aug 3 10:55:33 2018 - [info] Replication filtering check ok.
37 Fri Aug 3 10:55:33 2018 - [info] Master is down!
38 Fri Aug 3 10:55:33 2018 - [info] Terminating monitoring script.
39 Fri Aug 3 10:55:33 2018 - [info] Got exit code 20 (Master dead).
40 Fri Aug 3 10:55:33 2018 - [info] MHA::MasterFailover version 0.56.
41 Fri Aug 3 10:55:33 2018 - [info] Starting master failover.
42 Fri Aug 3 10:55:33 2018 - [info]
43 Fri Aug 3 10:55:33 2018 - [info] * Phase 1: Configuration Check Phase..
44 Fri Aug 3 10:55:33 2018 - [info]
45 Fri Aug 3 10:55:34 2018 - [info] GTID failover mode = 1
46 Fri Aug 3 10:55:34 2018 - [info] Dead Servers:
47 Fri Aug 3 10:55:34 2018 - [info] 192.168.1.101(192.168.1.101:3306)
48 Fri Aug 3 10:55:34 2018 - [info] Checking master reachability via MySQL(double check)...
49 Fri Aug 3 10:55:34 2018 - [info] ok.
50 Fri Aug 3 10:55:34 2018 - [info] Alive Servers:
51 Fri Aug 3 10:55:34 2018 - [info] 192.168.1.102(192.168.1.102:3306)
52 Fri Aug 3 10:55:34 2018 - [info] Alive Slaves:
53 Fri Aug 3 10:55:34 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
54 Fri Aug 3 10:55:34 2018 - [info] GTID ON
55 Fri Aug 3 10:55:34 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
56 Fri Aug 3 10:55:34 2018 - [info] Primary candidate for the new Master (candidate_master is set)
57 Fri Aug 3 10:55:34 2018 - [info] Starting GTID based failover.
58 Fri Aug 3 10:55:34 2018 - [info]
59 Fri Aug 3 10:55:34 2018 - [info] ** Phase 1: Configuration Check Phase completed.
60 Fri Aug 3 10:55:34 2018 - [info]
61 Fri Aug 3 10:55:34 2018 - [info] * Phase 2: Dead Master Shutdown Phase..
62 Fri Aug 3 10:55:34 2018 - [info]
63 Fri Aug 3 10:55:34 2018 - [info] Forcing shutdown so that applications never connect to the current master..
64 Fri Aug 3 10:55:34 2018 - [info] Executing master IP deactivation script:
65 Fri Aug 3 10:55:34 2018 - [info] /etc/masterha/master_ip_failover --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --command=stop --orig_master_ssh_port=3306
66 ssh: connect to host 192.168.1.101 port 3306: Connection refused
67 Fri Aug 3 10:55:37 2018 - [info] done.
68 Fri Aug 3 10:55:37 2018 - [warning] shutdown_script is not set. Skipping explicit shutting down of the dead master.
69 Fri Aug 3 10:55:37 2018 - [info] * Phase 2: Dead Master Shutdown Phase completed.
70 Fri Aug 3 10:55:37 2018 - [info]
71 Fri Aug 3 10:55:37 2018 - [info] * Phase 3: Master Recovery Phase..
72 Fri Aug 3 10:55:37 2018 - [info]
73 Fri Aug 3 10:55:37 2018 - [info] * Phase 3.1: Getting Latest Slaves Phase..
74 Fri Aug 3 10:55:37 2018 - [info]
75 Fri Aug 3 10:55:37 2018 - [info] The latest binary log file/position on all slaves is mysql-bin.000051:190
76 Fri Aug 3 10:55:37 2018 - [info] Latest slaves (Slaves that received relay log files to the latest):
77 Fri Aug 3 10:55:37 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
78 Fri Aug 3 10:55:37 2018 - [info] GTID ON
79 Fri Aug 3 10:55:37 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
80 Fri Aug 3 10:55:37 2018 - [info] Primary candidate for the new Master (candidate_master is set)
81 Fri Aug 3 10:55:37 2018 - [info] The oldest binary log file/position on all slaves is mysql-bin.000051:190
82 Fri Aug 3 10:55:37 2018 - [info] Oldest slaves:
83 Fri Aug 3 10:55:37 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
84 Fri Aug 3 10:55:37 2018 - [info] GTID ON
85 Fri Aug 3 10:55:37 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
86 Fri Aug 3 10:55:37 2018 - [info] Primary candidate for the new Master (candidate_master is set)
87 Fri Aug 3 10:55:37 2018 - [info]
88 Fri Aug 3 10:55:37 2018 - [info] * Phase 3.3: Determining New Master Phase..
89 Fri Aug 3 10:55:37 2018 - [info]
90 Fri Aug 3 10:55:37 2018 - [info] Searching new master from slaves..
91 Fri Aug 3 10:55:37 2018 - [info] Candidate masters from the configuration file:
92 Fri Aug 3 10:55:37 2018 - [info] 192.168.1.102(192.168.1.102:3306) Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
93 Fri Aug 3 10:55:37 2018 - [info] GTID ON
94 Fri Aug 3 10:55:37 2018 - [info] Replicating from 192.168.1.101(192.168.1.101:3306)
95 Fri Aug 3 10:55:37 2018 - [info] Primary candidate for the new Master (candidate_master is set)
96 Fri Aug 3 10:55:37 2018 - [info] Non-candidate masters:
97 Fri Aug 3 10:55:37 2018 - [info] Searching from candidate_master slaves which have received the latest relay log events..
98 Fri Aug 3 10:55:37 2018 - [info] New master is 192.168.1.102(192.168.1.102:3306)
99 Fri Aug 3 10:55:37 2018 - [info] Starting master failover..
100 Fri Aug 3 10:55:37 2018 - [info]
101 From:
102 192.168.1.101(192.168.1.101:3306) (current master)
103 +--192.168.1.102(192.168.1.102:3306)
104
105 To:
106 192.168.1.102(192.168.1.102:3306) (new master)
107 Fri Aug 3 10:55:37 2018 - [info]
108 Fri Aug 3 10:55:37 2018 - [info] * Phase 3.3: New Master Recovery Phase..
109 Fri Aug 3 10:55:37 2018 - [info]
110 Fri Aug 3 10:55:37 2018 - [info] Waiting all logs to be applied..
111 Fri Aug 3 10:55:37 2018 - [info] done.
112 Fri Aug 3 10:55:37 2018 - [info] Getting new master's binlog name and position..
113 Fri Aug 3 10:55:37 2018 - [info] mysql-bin.000004:190
114 Fri Aug 3 10:55:37 2018 - [info] All other slaves should start replication from here. Statement should be: CHANGE MASTER TO MASTER_HOST='192.168.1.102', MASTER_PORT=3306, MASTER_AUTO_POSITION=1, MASTER_USER='repl', MASTER_PASSWORD='xxx';
115 Fri Aug 3 10:55:37 2018 - [info] Master Recovery succeeded. File:Pos:Exec_Gtid_Set: mysql-bin.000004, 190, 1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730259
116 Fri Aug 3 10:55:37 2018 - [info] Executing master IP activate script:
117 Fri Aug 3 10:55:37 2018 - [info] /etc/masterha/master_ip_failover --command=start --ssh_user=root --orig_master_host=192.168.1.101 --orig_master_ip=192.168.1.101 --orig_master_port=3306 --new_master_host=192.168.1.102 --new_master_ip=192.168.1.102 --new_master_port=3306 --new_master_user='zlm' --new_master_password='zlmzlm' --orig_master_ssh_port=3306 --new_master_ssh_port=3306
118 Unknown option: new_master_ssh_port
119 Set read_only=0 on the new master.
120 ssh_exchange_identification: Connection closed by remote host
121 Fri Aug 3 10:55:37 2018 - [info] OK.
122 Fri Aug 3 10:55:37 2018 - [info] ** Finished master recovery successfully.
123 Fri Aug 3 10:55:37 2018 - [info] * Phase 3: Master Recovery Phase completed.
124 Fri Aug 3 10:55:37 2018 - [info]
125 Fri Aug 3 10:55:37 2018 - [info] * Phase 4: Slaves Recovery Phase..
126 Fri Aug 3 10:55:37 2018 - [info]
127 Fri Aug 3 10:55:37 2018 - [info]
128 Fri Aug 3 10:55:37 2018 - [info] * Phase 4.1: Starting Slaves in parallel..
129 Fri Aug 3 10:55:37 2018 - [info]
130 Fri Aug 3 10:55:37 2018 - [info] All new slave servers recovered successfully.
131 Fri Aug 3 10:55:37 2018 - [info]
132 Fri Aug 3 10:55:37 2018 - [info] * Phase 5: New master cleanup phase..
133 Fri Aug 3 10:55:37 2018 - [info]
134 Fri Aug 3 10:55:37 2018 - [info] Resetting slave info on the new master..
135 Fri Aug 3 10:55:37 2018 - [info] 192.168.1.102: Resetting slave info succeeded.
136 Fri Aug 3 10:55:37 2018 - [info] Master failover to 192.168.1.102(192.168.1.102:3306) completed successfully.
137 Fri Aug 3 10:55:37 2018 - [info]
138
139 ----- Failover Report -----
140
141 app1: MySQL Master failover 192.168.1.101(192.168.1.101:3306) to 192.168.1.102(192.168.1.102:3306) succeeded
142
143 Master 192.168.1.101(192.168.1.101:3306) is down!
144
145 Check MHA Manager logs at zlm3:/var/log/masterha/app1/app1.log for details.
146
147 Started automated(non-interactive) failover.
148 Invalidated master IP address on 192.168.1.101(192.168.1.101:3306)
149 Selected 192.168.1.102(192.168.1.102:3306) as a new master.
150 192.168.1.102(192.168.1.102:3306): OK: Applying all logs succeeded.
151 192.168.1.102(192.168.1.102:3306): OK: Activated master IP address.
152 192.168.1.102(192.168.1.102:3306): Resetting slave info succeeded.
153 Master failover to 192.168.1.102(192.168.1.102:3306) completed successfully.
154
155 //Above failover report shows all the evidence and results of automation master switchover.All of the steps are executed successfully.
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