mysql5.6升级到5.7.13后开启多源复制遇到重复的channel name该怎么办

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1. 一共三个数据库，原版本均为5.6，升级到5.7.13后开启多源复制，做成两主一从，发现channel name同名。
   

2. 在从库执行reset slave all后，从库自动重启。
   

3. 5.6 ---> 5.7.13:
   

4. 5.6：
   

5. 1 cd /usr/local/mysql ; scripts/mysql_install_db --user=mysql --defaults-file=/57data/my56.cnf
   

6. 2 /usr/local/mysql/bin/mysqld_safe --defaults-file=/57data/my56.cnf &
   

7. 3 mysqladmin -S /tmp/mysql3307.sock -u root -P3307 -p password
   

8. 4 mysql -uroot -S /tmp/mysql3307.sock -pmysql
   

9. 5 set global innodb_fast_shutdown=0;
   

10. 6 mysqladmin -S /tmp/mysql3307.sock  shutdown
    

11. 
    

12. 5.7：
    

13. 7 cd /usr/local/mysql57 ; ./bin/mysqld_safe --defaults-file=/57data/my.cnf &
    

14. 8 cd /usr/local/mysql57 ; ./bin/mysql_upgrade -S /tmp/mysql3307.sock
    

15. 9 cd /usr/local/mysql57 ; ./bin/mysqladmin -S /tmp/mysql3307.sock shutdown
    

16. 10 cd /usr/local/mysql57 ; ./bin/mysqld_safe --defaults-file=/57data/my.cnf &
    

17. 11 /usr/local/mysql57/bin/mysql -S /tmp/mysql3307.sock
    

18. 12 grant replication slave,replication client on *.* to repl@'%' identified by 'passw0rd';
    

19. 13
    

20. mysql> SET GLOBAL master_info_repository = 'TABLE';
    

21. Query OK, 0 rows affected (0.00 sec)
    

22. 
    

23. mysql> SET GLOBAL relay_log_info_repository = 'TABLE';
    

24. Query OK, 0 rows affected (0.00 sec)
    

25. 
    

26. mysql>
    

27. mysql> change master to master_host='vm2',
    

28.     -> master_user='repl',
    

29.     -> MASTER_PORT=3307,
    

30.     -> master_password='passw0rd',
    

31.     -> master_auto_position=1 FOR CHANNEL 'master_vm2';
    

32. 
    

33. change master to master_host='vm3',
    

34. master_user='repl',
    

35. MASTER_PORT=3307,
    

36. master_password='passw0rd',
    

37. Query OK, 0 rows affected, 2 warnings (0.08 sec)
    

38. 
    

39. mysql>
    

40. mysql> change master to master_host='vm3',
    

41.     -> master_user='repl',
    

42.     -> MASTER_PORT=3307,
    

43.     -> master_password='passw0rd',
    

44.     -> master_auto_position=1 FOR CHANNEL 'master_vm3';
    

45. Query OK, 0 rows affected, 2 warnings (0.04 sec)
    

46. 
    

47. mysql>
    

48. mysql>
    

49. mysql> show slave status\G;
    

50. *************************** 1. row ***************************
    

51.                Slave_IO_State:
    

52.                   Master_Host: vm2
    

53.                   Master_User: repl
    

54.                   Master_Port: 3307
    

55.                 Connect_Retry: 60
    

56.               Master_Log_File:
    

57.           Read_Master_Log_Pos: 4
    

58.                Relay_Log_File: vm4-relay-bin-master_vm2.000001
    

59.                 Relay_Log_Pos: 4
    

60.         Relay_Master_Log_File:
    

61.              Slave_IO_Running: No
    

62.             Slave_SQL_Running: No
    

63.               Replicate_Do_DB:
    

64.           Replicate_Ignore_DB:
    

65.            Replicate_Do_Table:
    

66.        Replicate_Ignore_Table:
    

67.       Replicate_Wild_Do_Table:
    

68.   Replicate_Wild_Ignore_Table:
    

69.                    Last_Errno: 0
    

70.                    Last_Error:
    

71.                  Skip_Counter: 0
    

72.           Exec_Master_Log_Pos: 0
    

73.               Relay_Log_Space: 154
    

74.               Until_Condition: None
    

75.                Until_Log_File:
    

76.                 Until_Log_Pos: 0
    

77.            Master_SSL_Allowed: No
    

78.            Master_SSL_CA_File:
    

79.            Master_SSL_CA_Path:
    

80.               Master_SSL_Cert:
    

81.             Master_SSL_Cipher:
    

82.                Master_SSL_Key:
    

83.         Seconds_Behind_Master: NULL
    

84. Master_SSL_Verify_Server_Cert: No
    

85.                 Last_IO_Errno: 0
    

86.                 Last_IO_Error:
    

87.                Last_SQL_Errno: 0
    

88.                Last_SQL_Error:
    

89.   Replicate_Ignore_Server_Ids:
    

90.              Master_Server_Id: 0
    

91.                   Master_UUID:
    

92.              Master_Info_File: mysql.slave_master_info
    

93.                     SQL_Delay: 0
    

94.           SQL_Remaining_Delay: NULL
    

95.       Slave_SQL_Running_State:
    

96.            Master_Retry_Count: 86400
    

97.                   Master_Bind:
    

98.       Last_IO_Error_Timestamp:
    

99.      Last_SQL_Error_Timestamp:
    

100.                Master_SSL_Crl:
     

101.            Master_SSL_Crlpath:
     

102.            Retrieved_Gtid_Set:
     

103.             Executed_Gtid_Set: 45ee9543-2d51-11e6-ba5d-0800276e6667:1-2,
     

104. 4acf2a8c-2d51-11e6-ba5d-080027806975:1-2,
     

105. 4c01fc54-2d51-11e6-ba5d-08002781f86e:1-6
     

106.                 Auto_Position: 1
     

107.          Replicate_Rewrite_DB:
     

108.                  Channel_Name: master_vm2
     

109.            Master_TLS_Version:
     

110. *************************** 2. row ***************************
     

111.                Slave_IO_State:
     

112.                   Master_Host: vm3
     

113.                   Master_User: repl
     

114.                   Master_Port: 3307
     

115.                 Connect_Retry: 60
     

116.               Master_Log_File:
     

117.           Read_Master_Log_Pos: 4
     

118.                Relay_Log_File: vm4-relay-bin-master_vm3.000001
     

119.                 Relay_Log_Pos: 4
     

120.         Relay_Master_Log_File:
     

121.              Slave_IO_Running: No
     

122.             Slave_SQL_Running: No
     

123.               Replicate_Do_DB:
     

124.           Replicate_Ignore_DB:
     

125.            Replicate_Do_Table:
     

126.        Replicate_Ignore_Table:
     

127.       Replicate_Wild_Do_Table:
     

128.   Replicate_Wild_Ignore_Table:
     

129.                    Last_Errno: 0
     

130.                    Last_Error:
     

131.                  Skip_Counter: 0
     

132.           Exec_Master_Log_Pos: 0
     

133.               Relay_Log_Space: 154
     

134.               Until_Condition: None
     

135.                Until_Log_File:
     

136.                 Until_Log_Pos: 0
     

137.            Master_SSL_Allowed: No
     

138.            Master_SSL_CA_File:
     

139.            Master_SSL_CA_Path:
     

140.               Master_SSL_Cert:
     

141.             Master_SSL_Cipher:
     

142.                Master_SSL_Key:
     

143.         Seconds_Behind_Master: NULL
     

144. Master_SSL_Verify_Server_Cert: No
     

145.                 Last_IO_Errno: 0
     

146.                 Last_IO_Error:
     

147.                Last_SQL_Errno: 0
     

148.                Last_SQL_Error:
     

149.   Replicate_Ignore_Server_Ids:
     

150.              Master_Server_Id: 0
     

151.                   Master_UUID:
     

152.              Master_Info_File: mysql.slave_master_info
     

153.                     SQL_Delay: 0
     

154.           SQL_Remaining_Delay: NULL
     

155.       Slave_SQL_Running_State:
     

156.            Master_Retry_Count: 86400
     

157.                   Master_Bind:
     

158.       Last_IO_Error_Timestamp:
     

159.      Last_SQL_Error_Timestamp:
     

160.                Master_SSL_Crl:
     

161.            Master_SSL_Crlpath:
     

162.            Retrieved_Gtid_Set:
     

163.             Executed_Gtid_Set: 45ee9543-2d51-11e6-ba5d-0800276e6667:1-2,
     

164. 4acf2a8c-2d51-11e6-ba5d-080027806975:1-2,
     

165. 4c01fc54-2d51-11e6-ba5d-08002781f86e:1-6
     

166.                 Auto_Position: 1
     

167.          Replicate_Rewrite_DB:
     

168.                  Channel_Name: master_vm2
     

169.            Master_TLS_Version:
     

170. 2 rows in set (0.00 sec)
     

171. 
     

172. ERROR:
     

173. No query specified
     

174. 
     

175. mysql>
     

176. 
     

177. mysql> select CHANNEL_NAME FROM performance_schema.replication_connection_status;
     

178. +--------------+
     

179. | CHANNEL_NAME |
     

180. +--------------+
     

181. | master_vm2 |
     

182. | master_vm2 |
     

183. +--------------+
     

184. 2 rows in set (0.01 sec)
     

185. 
     

186. 
     

187. mysql> select CHANNEL_NAME FROM performance_schema.replication_connection_status;
     

188. +--------------+
     

189. | CHANNEL_NAME |
     

190. +--------------+
     

191. | master_vm2 |
     

192. | master_vm2 |
     

193. +--------------+
     

194. 2 rows in set (0.01 sec)
     

195. 
     

196. mysql> start slave;
     

197. Query OK, 0 rows affected (0.04 sec)
     

198. 
     

199. 在两主库分别建数据库vm2和vm3,系统正常复制到从库。
     

200. mysql> show databases;
     

201. +--------------------+
     

202. | Database |
     

203. +--------------------+
     

204. | information_schema |
     

205. | mysql |
     

206. | performance_schema |
     

207. | sys |
     

208. | test |
     

209. | vm2 |
     

210. | vm3 |
     

211. +--------------------+
     

212. 7 rows in set (0.00 sec)
     

213. 
     

214. 在从库执行reset slave all，从库自动重启。
     

215. mysql> reset slave all;
     

216. ERROR 2013 (HY000): Lost connection to MySQL server during query
     

217. mysql> 2016-06-08T08:56:18.890685Z mysqld_safe Number of processes running now: 0
     

218. 2016-06-08T08:56:18.906614Z mysqld_safe mysqld restarted
     

219. 
     

220. mysql>
     

221. mysql> reset slave all;
     

222. ERROR 2006 (HY000): MySQL server has gone away
     

223. No connection. Trying to reconnect...
     

224. Connection id: 2
     

225. Current database: *** NONE ***
     

226. 
     

227. Query OK, 0 rows affected (0.09 sec)
     

228. 
     

229. mysql> show slave status\G;
     

230. Empty set (0.01 sec)
     

231. 
     

232. ERROR:
     

233. No query specified
     

234. 
     

235. 
     

236. err log里channel name信息显示正确，但出现Thread pointer相关信息，如下：
     

237. 2016-06-08T08:55:54.540373Z 4 [Note] Error reading relay log event for channel 'master_vm2': slave SQL thread was killed
     

238. 2016-06-08T08:55:54.550729Z 3 [Note] Slave I/O thread killed while reading event for channel 'master_vm2'
     

239. 2016-06-08T08:55:54.550814Z 3 [Note] Slave I/O thread exiting for channel 'master_vm2', read up to log 'mysql_bin.000005', position 653
     

240. 2016-06-08T08:55:54.556301Z 6 [Note] Error reading relay log event for channel 'master_vm3': slave SQL thread was killed
     

241. 2016-06-08T08:55:54.563404Z 5 [Note] Slave I/O thread killed while reading event for channel 'master_vm3'
     

242. 2016-06-08T08:55:54.563549Z 5 [Note] Slave I/O thread exiting for channel 'master_vm3', read up to log 'mysql_bin.000005', position 653
     

243. 08:56:18 UTC - mysqld got signal 11 ;
     

244. This could be because you hit a bug. It is also possible that this binary
     

245. or one of the libraries it was linked against is corrupt, improperly built,
     

246. or misconfigured. This error can also be caused by malfunctioning hardware.
     

247. Attempting to collect some information that could help diagnose the problem.
     

248. As this is a crash and something is definitely wrong, the information
     

249. collection process might fail.
     

250. 
     

251. key_buffer_size=8388608
     

252. read_buffer_size=131072
     

253. max_used_connections=1
     

254. max_threads=151
     

255. thread_count=1
     

256. connection_count=1
     

257. It is possible that mysqld could use up to
     

258. key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 68189 K  bytes of memory

259. Hope that's ok; if not, decrease some variables in the equation.
     
     Thread pointer: 0x7f9550000b10
     Attempting backtrace. You can use the following information to find out
     where mysqld died. If you see no messages after this, something went
     terribly wrong...
     stack_bottom = 7f9583175e28 thread_stack 0x40000
     /usr/local/mysql57/bin/mysqld(my_print_stacktrace+0x35)[0xf25c45]
     /usr/local/mysql57/bin/mysqld(handle_fatal_signal+0x4a4)[0x7b8604]
     /lib64/libpthread.so.0[0x37f160f7e0]
     /usr/local/mysql57/bin/mysqld(_ZN16Multisource_info9delete_miEPKc+0x2df)[0xf082ff]
     /usr/local/mysql57/bin/mysqld(_Z11reset_slaveP3THDP11Master_infob+0x1c5)[0xef1e05]
     /usr/local/mysql57/bin/mysqld(_Z11reset_slaveP3THD+0x2e2)[0xef21b2]
     /usr/local/mysql57/bin/mysqld(_Z15reset_slave_cmdP3THD+0x98)[0xef2388]
     /usr/local/mysql57/bin/mysqld(_Z20reload_acl_and_cacheP3THDmP10TABLE_LISTPi+0x30c)[0xd2ae3c]
     /usr/local/mysql57/bin/mysqld(_Z21mysql_execute_commandP3THDb+0x83a)[0xcfaf2a]
     /usr/local/mysql57/bin/mysqld(_Z11mysql_parseP3THDP12Parser_state+0x3cd)[0xcff97d]
     /usr/local/mysql57/bin/mysqld(_Z16dispatch_commandP3THDPK8COM_DATA19enum_server_command+0x1099)[0xd00a79]
     /usr/local/mysql57/bin/mysqld(_Z10do_commandP3THD+0x194)[0xd016e4]
     /usr/local/mysql57/bin/mysqld(handle_connection+0x2a4)[0xdce6e4]
     /usr/local/mysql57/bin/mysqld(pfs_spawn_thread+0x171)[0x121b951]
     /lib64/libpthread.so.0[0x37f1607aa1]
     /lib64/libc.so.6(clone+0x6d)[0x37f0ee893d]
     
     Trying to get some variables.
     Some pointers may be invalid and cause the dump to abort.
     Query (7f95500054f0): is an invalid pointer
     Connection ID (thread ID): 2
     Status: NOT_KILLED
     
     The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
     information that should help you find out what is causing the crash.
     2016-06-08T08:56:18.890685Z mysqld_safe Number of processes running now: 0
     2016-06-08T08:56:18.906614Z mysqld_safe mysqld restarted
     
     

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