error 1
Run masterha_check_repl --conf = / etc / masterha / app1.cnf given
Testing mysql connection and privileges..sh: mysql: command not found
mysql command failed with rc 127:0!
at /usr/bin/apply_diff_relay_logs line 375
Solution: ln -s / usr / local / mysql / bin / mysql / usr / bin
error 2
Run masterha_check_repl --conf = / etc / masterha / app1.cnf given
Can't exec "mysqlbinlog": No such file or directory at /usr/local/perl5/MHA/BinlogManager.pm line 99.
Solution: Perform which mysqlbinlog on the node node, such as my result is
[localhost ~] $ which mysqlbinlog
/ usr / local / MySQL / bin / mysqlbinlog
ln -s /usr/local/mysql/bin/mysqlbinlog /usr/bin/mysqlbinlog
error 3
Run master_check_ssh --conf = / etc / masterha / aap1.cnf given
connection via SSH [email protected]@192.168.17.200 ...
permission denied (publickey,gssapi-keyex,gssapi-with-mic,password)
[error] [/usr/local/share/perl5/MHA/SSHcheck.pm,ln163]
Solution: The general public have a problem, need to remove /root/.ssh/known_hosts inside ip content related to regenerate click on the ok
error 4
Run master_check_ssh --conf = / etc / masterha / aap1.cnf given
Sun Nov 20 20:10:59 2016 - [info] Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/data/mysqllog/3306 --output_file=/masterha/app1/save_binary_logs_test --manager_version=0.55 --start_file=mysql-bin.000001
Sun Nov 20 20:10:59 2016 - [info] Connecting to [email protected](172.18.3.180)..
Failed to save binary log: Binlog not found from /data/mysqllog/3306! If you got this error at MHA Manager, please set "master_binlog_dir=/path/to/binlog_directory_of_the_master" correctly in the MHA Manager's configuration file and try again.
at /usr/bin/save_binary_logs line 117.
eval {...} called at /usr/bin/save_binary_logs line 66
main::main() called at /usr/bin/save_binary_logs line 62
Sun Nov 20 20:10:59 2016 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln154] Master setting check failed!
Sun Nov 20 20:10:59 2016 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln367] Master configuration failed.
Sun Nov 20 20:10:59 2016 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln386] Error happend on checking configurations. at /usr/bin/masterha_check_repl line 48.
Sun Nov 20 20:10:59 2016 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln482] Error happened on monitoring servers.
Sun Nov 20 20:10:59 2016 - [info] Got exit code 1 (Not master dead).
Solution:
datadir path /etc/masterha/aap1.cnf should be in the position mysql bin-log of
error 5
Run masterha_check_repl --conf = / etc / masterha / app1.cnf given
Mon Nov 21 11:11:40 2016 - [info] MHA::MasterRotate version 0.55.
Mon Nov 21 11:11:40 2016 - [info] Starting online master switch..
Mon Nov 21 11:11:40 2016 - [info]
Mon Nov 21 11:11:40 2016 - [info] * Phase 1: Configuration Check Phase..
Mon Nov 21 11:11:40 2016 - [info]
Mon Nov 21 11:11:40 2016 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Mon Nov 21 11:11:40 2016 - [info] Reading application default configurations from /etc/masterha/app1.cnf..
Mon Nov 21 11:11:40 2016 - [info] Reading server configurations from /etc/masterha/app1.cnf..
Mon Nov 21 11:11:40 2016 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln604] There are 2 non-slave servers! MHA manages at most one non-slave server. Check configurations.
Mon Nov 21 11:11:40 2016 - [error][/usr/share/perl5/vendor_perl/MHA/ManagerUtil.pm, ln178] Got ERROR: at /usr/share/perl5/vendor_perl/MHA/MasterRotate.pm line 85.
Solution:
Manually master after the repair is made from a new master server
warning 1
each to be provided from the library = 0 relay_log_purge
### or receive the alarm information ## mysql -e 'set global relay_log_purge = 0' dynamic modification of the parameters, because any time will increase as slave Master
[warning] relay_log_purge IS = 0 not set on slave (172.18.3.140:3306).
warning 2
each from the library provided. 1 = READ_ONLY
### or receive the alarm information ## mysql -e 'set global read_only = 1' dynamic modification of the parameters, at any slave will increase as is master.
[info] read_only = 1 is not set on slave (172.18.3.107:3306
[root@centos7-04 ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf
Question one:
Thu Aug 23 04:39:01 2018 - [warning] log-bin is not set on slave 192.168.0.189(192.168.0.189:3306). This host cannot be a master.
Thu Aug 23 04:39:01 2018 - [warning] log-bin is not set on slave 192.168.0.190(192.168.0.190:3306). This host cannot be a master.
Solution:
From each client libraries should be open binlog, that is open on both log_bin = on, two from
[Root @ centos7-02 ~] # vi /etc/my.cnf
basedir = /usr/local/mysql
datadir = /data/mysql
socket = /tmp/mysql.sock
server-id=189
log_bin=on
Question two:
Can not exec "mysqlbinlog": No such file or directory at /usr/local/share/perl5/MHA/BinlogManager.pm line 106.
mysqlbinlog version command failed with rc 1:0, please verify PATH, LD_LIBRARY_PATH, and client options
at /usr/local/bin/apply_diff_relay_logs line 493.
Solution:
Run the following commands on all nodes
[root@centos7-01 ~]# ln -s /usr/local/mysql/bin/mysqlbinlog /usr/local/bin/mysqlbinlog
[root@centos7-01 ~]# ln -s /usr/local/mysql/bin/mysql /usr/local/bin/mysql
[root@centos7-02 ~]# ln -s /usr/local/mysql/bin/mysqlbinlog /usr/local/bin/mysqlbinlog
[root@centos7-02 ~]# ln -s /usr/local/mysql/bin/mysql /usr/local/bin/mysql
[root@centos7-03 ~]# ln -s /usr/local/mysql/bin/mysqlbinlog /usr/local/bin/mysqlbinlog
[root@centos7-03 ~]# ln -s /usr/local/mysql/bin/mysql /usr/local/bin/mysql
Question three:
Thu Aug 23 05:41:59 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln226] Failed to get master_ip_failover_script status with return code 1:0.
Thu Aug 23 05:41:59 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln424] Error happened on checking configurations. at /usr/local/bin/masterha_check_repl line 48
Thu Aug 23 05:41:59 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln523] Error happened on monitoring servers.
Solution:
[Root @ centos7-04 ~] # vi /etc/masterha/app1.cnf
Then turn this option # master_ip_failover_script = / usr / local / bin / master_ip_failover // temporarily comment this option, after the introduction of keepalived back and modify the script later
Notes: Failover in two ways: one is the virtual IP address, one is the global configuration file. MHA did not define what a way to use, but allow users to choose their own virtual IP address approach will involve other software, such as keepalive software, but also to modify the script master_ip_failover.
Question 4:
Thu Aug 23 18:17:14 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln424] Error happened on checking configurations. Can't exec "/usr/local/bin/master_ip_failover": 权限不够 at /usr/local/share/perl5/MHA/ManagerUtil.pm line 68.
Thu Aug 23 18:17:14 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln523] Error happened on monitoring servers.
Solution:
chmod +x /usr/local/bin/master_ip_failover
Question 5:
[error][/usr/local/share/perl5/MHA/ServerManager.pm, ln492] Server 192.168.0.190(192.168.0.190:3306) is dead, but must be alive! Check server settings.
Solution:
[Root @ centos7-04 ~] # rm -rf /var/log/masterha/app1.log/app1.failover.complete # delete the files on the machine MHA management
Question six:
[error][/usr/local/share/perl5/MHA/ServerManager.pm, ln492] Server 192.168.0.190(192.168.0.190:3306) is dead, but must be alive! Check server settings.
Solution:
Clear firewall rules
Question seven:
[error][/usr/local/share/perl5/MHA/ServerManager.pm, ln492] Server 192.168.0.188(192.168.0.188:3306) is dead, but must be alive! Check server settings.
Fri Aug 24 23:50:37 2018 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln424] Error happened on checking configurations. at /usr/local/share/perl5/MHA/MasterMonitor.pm line 399
Solution:
Mysql restart the main library service
Question eight:
[error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln205] Slaves settings check failed!
Solution:
Landing from the database, view the main database is not set their own
mysql> show slave status\G
Master_Server_Id: 189
Nine on:
[error][/usr/local/share/perl5/MHA/ServerManager.pm, ln781] Multi-master configuration is detected, but two or more masters are either writable (read-only is not set) or dead! Check configurations for details. Master configurations are as below:
Master 192.168.0.189(192.168.0.189:3306), dead
Master 192.168.0.188(192.168.0.188:3306), replicating from 192.168.0.189(192.168.0.189:3306)
Solution:
All from the execution
mysql -uroot -p -e "set global read_only=1"
Question 10:
mysqlbinlog: unknown variable 'default-character-set=utf8'
mysqlbinlog version command failed with rc 7:0, please verify PATH, LD_LIBRARY_PATH, and client options
Solution:
Comment out all the segments from the server clinet default-character-set = utf8mb4
Change the default character set UTF8 to utf8mb4
[client]
#default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'