Merge branch 'Markdown' of https://github.com/mariadb-corporation/MaxScale into Markdown
This commit is contained in:
Mark Riddoch
commit
83211f23e8
@ -46,65 +46,46 @@ MySQL 5.5.38 as SQL node2
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Cluster configuration file is /var/lib/mysql-cluster/config.ini, copied on all servers
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[ndbd default]
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[ndbd default]
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NoOfReplicas=2
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DataMemory=60M
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IndexMemory=16M
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NoOfReplicas=2
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[ndb_mgmd]
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hostname=178.62.38.199
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id=21
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datadir=/var/lib/mysql-cluster
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[mysqld]
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hostname=178.62.38.199
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[mysqld]
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hostname=162.243.90.81
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DataMemory=60M
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[ndbd]
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hostname=178.62.38.199
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IndexMemory=16M
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[ndb_mgmd]
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hostname=178.62.38.199
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id=21
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datadir=/var/lib/mysql-cluster
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[mysqld]
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hostname=178.62.38.199
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[mysqld]
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hostname=162.243.90.81
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[ndbd]
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hostname=178.62.38.199
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[ndbd]
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hostname=162.243.90.81
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[ndbd]
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hostname=162.243.90.81
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Note, it’s possible to specify all node ids and datadir as well for each cluster component
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Example:
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[ndbd]
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hostname=162.243.90.81
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id=43
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datadir=/usr/local/mysql/data
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[ndbd]
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hostname=162.243.90.81
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id=43
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datadir=/usr/local/mysql/data
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and /etc/my.cnf, copied as well in all servers
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[mysqld]
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[mysqld]
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ndbcluster
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ndb-connectstring=178.62.38.199
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innodb_buffer_pool_size=16M
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ndbcluster
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ndb-connectstring=178.62.38.199
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innodb_buffer_pool_size=16M
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[mysql_cluster]
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ndb-connectstring=178.62.38.199
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[mysql_cluster]
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ndb-connectstring=178.62.38.199
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## Startup of MySQL Cluster
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@ -112,19 +93,19 @@ Each cluster node process must be started separately, and on the host where it r
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- On the management host, server1, issue the following command from the system shell to start the management node process:
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[root@server1 ~]# ndb_mgmd -f /var/lib/mysql-cluster/config.ini
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[root@server1 ~]# ndb_mgmd -f /var/lib/mysql-cluster/config.ini
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- On each of the data node hosts, run this command to start the ndbd process:
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[root@server1 ~]# ndbd —-initial -—initial-start
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[root@server2 ~]# ndbd —-initial -—initial-start
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[root@server1 ~]# ndbd —-initial -—initial-start
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[root@server2 ~]# ndbd —-initial -—initial-start
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- On each SQL node start the MySQL server process:
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[root@server1 ~]# /etc/init.d/mysql start
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[root@server2 ~]# /etc/init.d/mysql start
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[root@server1 ~]# /etc/init.d/mysql start
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[root@server2 ~]# /etc/init.d/mysql start
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## Check the cluster status
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@ -146,21 +127,21 @@ Cluster Configuration
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---------------------
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[ndbd(NDB)] 2 node(s)
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[ndbd(NDB)] 2 node(s)
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id=24 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17, Nodegroup: 0, *)
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id=24 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17, Nodegroup: 0, *)
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id=25 @162.243.90.81 (mysql-5.5.38 ndb-7.2.17, Nodegroup: 0)
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[ndb_mgmd(MGM)] 1 node(s)
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id=21 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17)
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[mysqld(API)] 2 node(s)
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id=25 @162.243.90.81 (mysql-5.5.38 ndb-7.2.17, Nodegroup: 0)
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id=22 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17)
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[ndb_mgmd(MGM)] 1 node(s)
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id=21 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17)
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[mysqld(API)] 2 node(s)
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id=22 @178.62.38.199 (mysql-5.5.38 ndb-7.2.17)
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id=23 @162.243.90.81 (mysql-5.5.38 ndb-7.2.17)
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id=23 @162.243.90.81 (mysql-5.5.38 ndb-7.2.17)
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ndb_mgm>
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@ -172,135 +153,99 @@ The SQL node is referenced here as [mysqld(API)], which reflects the fact that t
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[root@server1 ~]# mysql
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mysql> CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=NDBCLUSTER;
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mysql> CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=NDBCLUSTER;
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Query OK, 0 rows affected (3.28 sec)
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Query OK, 0 rows affected (3.28 sec)
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mysql> show create table t1;
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mysql> show create table t1;
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+-------+-------------------------------------------------------------------------------------------+
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+------- +-------------------------------------------------------------------------------------------+
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| Table | Create Table |
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| Table | Create Table |
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+-------+-------------------------------------------------------------------------------------------+
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+-------+-------------------------------------------------------------------------------------------+
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| t1 | CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL
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| t1 | CREATE TABLE `t1` (
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) ENGINE=ndbcluster DEFAULT CHARSET=latin1 |
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`a` int(11) DEFAULT NULL
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+-------+-------------------------------------------------------------------------------------------+
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) ENGINE=ndbcluster DEFAULT CHARSET=latin1 |
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+-------+-------------------------------------------------------------------------------------------+
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1 row in set (0.01 sec)
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1 row in set (0.01 sec)
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- Just add a row in the table:
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mysql> insert into test.t1 values(11);
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mysql> insert into test.t1 values(11);
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Query OK, 1 row affected (0.15 sec)
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Query OK, 1 row affected (0.15 sec)
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- Select the current number of rows:
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mysql> select count(1) from t1;
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mysql> select count(1) from t1;
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+----------+
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+----------+
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| count(1) |
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+----------+
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| 1 |
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+----------+
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| count(1) |
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+----------+
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| 1 |
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+----------+
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1 row in set (0.07 sec)
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1 row in set (0.07 sec)
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- The same from the MySQL client pointing to SQL node on server2
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[root@server2 ~]# mysql
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mysql> select count(1) from test.t1;
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mysql> select count(1) from test.t1;
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+----------+
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+----------+
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| count(1) |
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+----------+
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| 1 |
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+----------+
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| count(1) |
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+----------+
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| 1 |
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+----------+
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1 row in set (0.08 sec)
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1 row in set (0.08 sec)
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## Configuring MaxScale for connection load balancing of SQL nodes
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Add these sections in MaxScale.cnf config file:
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[Cluster Service]
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[Cluster Service]
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type=service
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router=readconnroute
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router_options=ndb
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servers=server1,server2
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user=test
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passwd=test
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version_string=5.5.37-CLUSTER
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[Cluster Listener]
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type=listener
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service=Cluster Service
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protocol=MySQLClient
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port=4906
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type=service
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[NDB Cluster Monitor]
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type=monitor
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module=ndbclustermon
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servers=server1,server2
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user=monitor
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passwd=monitor
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monitor_interval=8000
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router=readconnroute
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[server1]
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router_options=ndb
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#SQL node1
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type=server
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address=127.0.0.1
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port=3306
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protocol=MySQLBackend
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servers=server1,server2
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user=test
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passwd=test
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version_string=5.5.37-CLUSTER
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[Cluster Listener]
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type=listener
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service=Cluster Service
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protocol=MySQLClient
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port=4906
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[NDB Cluster Monitor]
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type=monitor
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module=ndbclustermon
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servers=server1,server2
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user=monitor
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passwd=monitor
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monitor_interval=8000
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[server1]
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## SQL node1
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type=server
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address=127.0.0.1
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port=3306
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protocol=MySQLBackend
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[server2]
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##SQL node2
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type=server
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address=162.243.90.81
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port=3306
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protocol=MySQLBackend
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[server2]
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#SQL node2
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type=server
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address=162.243.90.81
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port=3306
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protocol=MySQLBackend
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Assuming MaxScale is installed in server1, start it
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@ -315,61 +260,38 @@ MaxScale> show monitors
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Monitor: 0x387b880
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Name: NDB Cluster Monitor
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Monitor running
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Sampling interval: 8000 milliseconds
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Monitored servers: 127.0.0.1:3306, 162.243.90.81:3306
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MaxScale> show servers
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Server 0x3873b40 (server1)
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Server: 127.0.0.1
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Status: NDB, Running
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Protocol: MySQLBackend
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Port: 3306
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Server Version: 5.5.38-ndb-7.2.17-cluster-gpl
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Node Id: 22
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Master Id: -1
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Repl Depth: 0
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Number of connections: 0
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Server: 127.0.0.1
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Status: NDB, Running
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Protocol: MySQLBackend
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Port: 3306
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Server Version: 5.5.38-ndb-7.2.17-cluster-gpl
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Node Id: 22
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Master Id: -1
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Repl Depth: 0
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Number of connections: 0
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Current no. of conns: 0
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Current no. of operations: 0
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Server 0x3873a40 (server2)
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Server: 162.243.90.81
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Status: NDB, Running
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Protocol: MySQLBackend
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Port: 3306
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Server Version: 5.5.38-ndb-7.2.17-cluster-gpl
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Node Id: 23
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Master Id: -1
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Repl Depth: 0
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Number of connections: 0
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Server: 162.243.90.81
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Status: NDB, Running
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Protocol: MySQLBackend
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Port: 3306
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Server Version: 5.5.38-ndb-7.2.17-cluster-gpl
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Node Id: 23
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Master Id: -1
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Repl Depth: 0
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Number of connections: 0
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Current no. of conns: 0
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Current no. of operations: 0
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It’s now possible to run basic tests with the read connection load balancing for the two configured SQL nodes
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@ -378,27 +300,19 @@ It’s now possible to run basic tests with the read connection load balancing
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[root@server1 ~]# mysql -h 127.0.0.1 -P 4906 -u test -ptest -e "SHOW STATUS LIKE 'Ndb_cluster_node_id'"
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+---------------------+-------+
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| Variable_name | Value |
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+---------------------+-------+
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| Ndb_cluster_node_id | 23 |
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+---------------------+-------+
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+---------------------+-------+
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| Variable_name | Value |
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+---------------------+-------+
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| Ndb_cluster_node_id | 23 |
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+---------------------+-------+
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[root@server1 ~]# mysql -h 127.0.0.1 -P 4906 -u test -ptest -e "SHOW STATUS LIKE 'Ndb_cluster_node_id'"
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+---------------------+-------+
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| Variable_name | Value |
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+---------------------+-------+
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| Ndb_cluster_node_id | 22 |
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+---------------------+-------+
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+---------------------+-------+
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| Variable_name | Value |
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+---------------------+-------+
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| Ndb_cluster_node_id | 22 |
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+---------------------+-------+
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The MaxScale connection load balancing is working.
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@ -406,15 +320,11 @@ The MaxScale connection load balancing is working.
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[root@server1 ~] mysql -h 127.0.0.1 -P 4906 -utest -ptest -e "SELECT COUNT(1) FROM test.t1"
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+----------+
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| COUNT(1) |
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+----------+
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| 1 |
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+----------+
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+----------+
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| COUNT(1) |
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+----------+
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| 1 |
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+----------+
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(3) test an insert statement
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@ -424,13 +334,9 @@ mysql -h 127.0.0.1 -P 4906 -utest -ptest -e "INSERT INTO test.t1 VALUES (19)"
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[root@server1 ~] mysql -h 127.0.0.1 -P 4906 -utest -ptest -e "SELECT COUNT(1) FROM test.t1"
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+----------+
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| COUNT(1) |
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+----------+
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| 2 |
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+----------+
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+----------+
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| COUNT(1) |
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+----------+
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| 2 |
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+----------+
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Loading…
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Reference in New Issue
Block a user