Unable to start replication Master-Slave, I have searched a lot for this but unable to get the Server-UUID of both the server. Do we have any solution for this.
Scenario: I have created new slave which is not getting replicated and we are getting error Last_IO_Error: Fatal error: The slave I/O thread stops because a fatal error is encountered when it tries to get the value of SERVER_UUID variable from master.
On my slave I have auto.cnf which is having SERVER_UUID but the Master doesn't have. I think if because of this we are facing problem. if i am able to generate this on Master my replication will start.
Both on Centos 6.7
Master Version MySQL-server-5.5.41-1.el6.x86_64
Slave1 Version Mysql-community-server-5.7.10-2.el6.x86_64
Slave2 running absolutely fine on MySQL-server-5.6.25-1.el6.x86_64
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.10.2.12
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000089
Read_Master_Log_Pos: 18646782
Relay_Log_File: GACRMDATA2-relay-bin.000002
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000089
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 18646782
Relay_Log_Space: 150
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1593
Last_IO_Error: Fatal error: The slave I/O thread stops because a fatal error is encountered when it tries to get the value of SERVER_UUID variable from master.
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 212
Master_UUID:
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 160201 09:41:40
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
output of my.cnf for reference
[mysqld]
user = mysql
innodb_file_per_table=0
innodb_checksum_algorithm=INNODB
binlog_checksum=NONE
server-id = 216
tmpdir=/tmp/mysqltemp
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-bin=/var/log/mysql/mysql-bin.log
general_log=1
slow_query_log=1
general_log_file=/var/log/mysql/mysqld-gen.log
slow_query_log_file=/var/log/mysql/mysql-slow.log
log_bin_trust_function_creators=1
binlog_format=MIXED
long_query_time=3
#INNODB SETTINGS
innodb_file_per_table
innodb_buffer_pool_size = 107G
innodb_buffer_pool_instances=50
#innodb_additional_mem_pool_size = 1G (Initially this gave an error)
innodb_thread_concurrency=0
innodb_flush_method=O_DIRECT
innodb_log_buffer_size = 100M
innodb_log_files_in_group = 2
innodb_lock_wait_timeout=400
innodb_max_dirty_pages_pct=10
innodb_open_files=1000
bulk_insert_buffer_size=512M
thread_cache_size=128M
#table_cache = 2000
table_open_cache = 4096
interactive_timeout = 600
wait_timeout=1000
join_buffer_size = 3M
sort_buffer_size = 8M
max_connections = 600
key_buffer_size = 1G
read_buffer_size = 2M
read_rnd_buffer_size = 16M
lock_wait_timeout=500
transaction-isolation = READ-COMMITTED
max_allowed_packet=512M
tmp_table_size=32M
event_scheduler=1
open_files_limit=20000
default_storage_engine=innodb
group_concat_max_len=1M
preload_buffer_size=33554432
net_buffer_length=1048576
symbolic-links=0
sync_binlog=1
# Recommended in standard MySQL setup
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
Slave2 output show slave status\G
[(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.10.2.12
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000093
Read_Master_Log_Pos: 8641342
Relay_Log_File: relay-bin.000008
Relay_Log_Pos: 8641501
Relay_Master_Log_File: mysql-bin.000093
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 8641342
Relay_Log_Space: 8643392
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 212
Master_UUID:
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)