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python部署galery集群
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galery.py文件内容
import pexpect import os import configparser HOSTNAME_DB1='db1' HOSTNAME_DB2='db2' HOSTNAME_DB3='db3' DB1 = '192.168.254.30' DB2 = '192.168.254.31' DB3 = '192.168.254.39' PORT = 22 USERNAME = 'root' PASSWORD = 'root' #DB1 config = configparser.ConfigParser() config.read("/etc/my.cnf.d/server.cnf", encoding="utf-8") config.set('galera','wsrep_on','ON') config.set('galera','wsrep_provider','/usr/lib64/galera/libgalera_smm.so') config.set('galera','wsrep_cluster_address','"gcomm://%s,%s,%s"' % (DB1, DB2, DB3)) config.set('galera','wsrep_node_name','%s' % HOSTNAME_DB1 ) config.set('galera','wsrep_node_address','%s' % DB1) config.set('galera','binlog_format','row') config.set('galera','default_storage_engine','InnoDB') config.set('galera','innodb_autoinc_lock_mode','2') config.set('galera','wsrep_slave_threads','1') config.set('galera','innodb_flush_log_at_trx_commit','1') config.set('galera','innodb_buffer_pool_size','120M') config.set('galera','wsrep_sst_method','rsync') config.set('galera','wsrep_causal_reads','ON') config.write(open('/etc/my.cnf.d/server.cnf','w')) res = os.system('galera_new_cluster &>/dev/null') if res == 0: #cp server.cnf child1 = pexpect.spawn('scp /etc/my.cnf.d/server.cnf %s@%s:/etc/my.cnf.d/server.cnf' % (USERNAME,DB2) ) child1.expect('password:') child1.sendline(PASSWORD) child1.interact() child1.close() child3 = pexpect.spawn('scp /etc/my.cnf.d/server.cnf %s@%s:/etc/my.cnf.d/server.cnf' % (USERNAME,DB3) ) child3.expect('password:') child3.sendline(PASSWORD) child3.interact() child3.close() #connect DB2 child3 = pexpect.spawn('ssh %s@%s' % (USERNAME, DB2)) child3.expect('password:') child3.sendline('root') child3.expect('#') child3.sendline('sed -i "s/wsrep_node_name = db1/wsrep_node_name = db2/g" /etc/my.cnf.d/server.cnf;se d -i "s/wsrep_node_address = 192.168.254.30/wsrep_node_address = 192.168.254.31/g" /etc/my.cnf.d/server.c nf') child3.expect('#') child3.sendline('systemctl restart mariadb > /dev/null') child3.sendline('exit') child3.interact() child3.close() #connect DB3 child4 = pexpect.spawn('ssh %s@%s' % (USERNAME, DB3)) child4.expect('password:') child4.sendline('root') child4.expect('#') child4.sendline('sed -i "s/wsrep_node_name = db1/wsrep_node_name = db3/g" /etc/my.cnf.d/server.cnf;se d -i "s/wsrep_node_address = 192.168.254.30/wsrep_node_address = 192.168.254.39/g" /etc/my.cnf.d/server.c nf') child4.expect('#') child4.sendline('systemctl restart mariadb > /dev/null') child4.sendline('exit') child4.interact() child4.close() print('galera集群配置完成') else: print('galera服务启动故障')
server_db2.conf
[server] [mysqld] [galera] wsrep_on = ON wsrep_provider = /usr/lib64/galera/libgalera_smm.so wsrep_cluster_address = "gcomm://192.168.254.30,192.168.254.31,192.168.254.39" wsrep_node_name = db2 wsrep_node_address = 192.168.254.31 binlog_format = row default_storage_engine = InnoDB innodb_autoinc_lock_mode = 2 wsrep_slave_threads = 1 innodb_flush_log_at_trx_commit = 1 innodb_buffer_pool_size = 120M wsrep_sst_method = rsync wsrep_causal_reads = ON [embedded] [mariadb] [mariadb-10.3]
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