今回は、検証用に2台のノードにMySQL Clusterを導入してみました。
検証目的なので2台で設定してますが、本番ではデータノードは分けた方が良さそうです。
————————-
Node1: 192.168.56.114
Node2: 192.168.56.115
————————-
mysql> select * from ndbinfo.nodes; +---------+--------+---------+-------------+-------------------+ | node_id | uptime | status | start_phase | config_generation | +---------+--------+---------+-------------+-------------------+ | 1 | 3994 | STARTED | 0 | 1 | | 2 | 3948 | STARTED | 0 | 1 | +---------+--------+---------+-------------+-------------------+ 2 rows in set (0.05 sec) mysql> mysql> select * from ndbinfo.arbitrator_validity_detail; +---------+------------+------------------+---------------+-----------+ | node_id | arbitrator | arb_ticket | arb_connected | arb_state | +---------+------------+------------------+---------------+-----------+ | 1 | 100 | 082d0001000710fe | Yes | ARBIT_RUN | | 2 | 100 | 082d0001000710fe | Yes | ARBIT_RUN | +---------+------------+------------------+---------------+-----------+ 2 rows in set (0.00 sec) mysql>
既に、起動済みなのでNDBストレージエンジンでTABLEを作成してみる。
cluster74_02で作成
mysql> select @@hostname;
+--------------+
| @@hostname |
+--------------+
| cluster74_02 |
+--------------+
1 row in set (0.01 sec)
mysql> CREATE DATABASE NDB01 default character set utf8mb4;USE NDB01;
Query OK, 1 row affected (0.06 sec)
Database changed
mysql> show tables;
Empty set (0.00 sec)
mysql> CREATE TABLE T20150319(id int not null auto_increment, memo varchar(100), primary key(id) ) ENGINE=ndb;
Query OK, 0 rows affected (0.47 sec)
mysql> show tables;
+-----------------+
| Tables_in_NDB01 |
+-----------------+
| T20150319 |
+-----------------+
1 row in set (0.00 sec)
mysql> use NDB01;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> desc T20150319;
+-------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| memo | varchar(100) | YES | | NULL | |
+-------+--------------+------+-----+---------+----------------+
2 rows in set (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証');
Query OK, 1 row affected (0.00 sec)
mysql> select * from T20150319;
+----+------------------------------------+
| id | memo |
+----+------------------------------------+
| 1 | This is MySQL Cluster 7.4.4 検証 |
+----+------------------------------------+
1 row in set (0.01 sec)
mysql>
他のノードにてデータ確認
Node: cluster74_01
mysql> select @@hostname; +--------------+ | @@hostname | +--------------+ | cluster74_01 | +--------------+ 1 row in set (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | NDB01 | | mysql | | ndb_1_fs | | ndbinfo | | ndbmemcache | | performance_schema | | test | +--------------------+ 8 rows in set (0.00 sec) mysql> show tables from NDB01; +-----------------+ | Tables_in_NDB01 | +-----------------+ | T20150319 | +-----------------+ 1 row in set (0.00 sec) mysql> select * from T20150319; +----+------------------------------------+ | id | memo | +----+------------------------------------+ | 1 | This is MySQL Cluster 7.4.4 検証 | +----+------------------------------------+ 1 row in set (0.01 sec)
ここで一度バックアップを取得
※リストアすると上記の状態に戻る。
ndb_mgm> backup start
DBに追加でデータを追加すると同時にリソースアロケーションを確認。
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-2');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-3');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-4');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-5');
Query OK, 1 row affected (0.01 sec)
mysql> select * from T20150319;
+----+--------------------------------------+
| id | memo |
+----+--------------------------------------+
| 3 | This is MySQL Cluster 7.4.4 検証-3 |
| 5 | This is MySQL Cluster 7.4.4 検証-5 |
| 1 | This is MySQL Cluster 7.4.4 検証 |
| 2 | This is MySQL Cluster 7.4.4 検証-2 |
| 4 | This is MySQL Cluster 7.4.4 検証-4 |
+----+--------------------------------------+
5 rows in set (0.01 sec)
mysql> desc ndbinfo.memory_per_fragment;
+------------------------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+---------------------+------+-----+---------+-------+
| fq_name | varchar(512) | YES | | NULL | |
| parent_fq_name | varchar(512) | YES | | NULL | |
| type | varchar(512) | YES | | NULL | |
| table_id | int(10) unsigned | YES | | NULL | |
| node_id | int(10) unsigned | YES | | NULL | |
| block_instance | int(10) unsigned | YES | | NULL | |
| fragment_num | int(10) unsigned | YES | | NULL | |
| fixed_elem_alloc_bytes | bigint(20) unsigned | YES | | NULL | |
| fixed_elem_free_bytes | bigint(20) unsigned | YES | | NULL | |
| fixed_elem_size_bytes | int(10) unsigned | YES | | NULL | |
| fixed_elem_count | bigint(20) unsigned | YES | | NULL | |
| fixed_elem_free_count | decimal(16,0) | YES | | NULL | |
| var_elem_alloc_bytes | bigint(20) unsigned | YES | | NULL | |
| var_elem_free_bytes | bigint(20) unsigned | YES | | NULL | |
| var_elem_count | bigint(20) unsigned | YES | | NULL | |
| hash_index_alloc_bytes | bigint(20) unsigned | YES | | NULL | |
+------------------------+---------------------+------+-----+---------+-------+
16 rows in set (0.00 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%T20150319%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 32768 | 32608 |
| 1 | 1 | 32768 | 32512 |
| 2 | 0 | 32768 | 32608 |
| 2 | 1 | 32768 | 32512 |
+------+------+-------------+------------+
4 rows in set (0.00 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-6');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-7');
Query OK, 1 row affected (0.00 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-8');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-9');
Query OK, 1 row affected (0.01 sec)
mysql> insert into T20150319(memo) values('This is MySQL Cluster 7.4.4 検証-10');
Query OK, 1 row affected (0.01 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%T20150319%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 32768 | 32480 |
| 1 | 1 | 32768 | 32480 |
| 2 | 0 | 32768 | 32480 |
| 2 | 1 | 32768 | 32480 |
+------+------+-------------+------------+
4 rows in set (0.01 sec)
mysql> select node_id,memory_type,used,used_pages,total,total_pages from ndbinfo.memoryusage;
+---------+---------------------+---------+------------+-----------+-------------+
| node_id | memory_type | used | used_pages | total | total_pages |
+---------+---------------------+---------+------------+-----------+-------------+
| 1 | Data memory | 2293760 | 70 | 134217728 | 4096 |
| 1 | Index memory | 491520 | 60 | 68419584 | 8352 |
| 1 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
| 2 | Data memory | 2293760 | 70 | 134217728 | 4096 |
| 2 | Index memory | 491520 | 60 | 68419584 | 8352 |
| 2 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
+---------+---------------------+---------+------------+-----------+-------------+
6 rows in set (0.01 sec)
mysql>
ここからは、データのリストア
1. Clusterを停止（管理・データ）
2. 管理ノードを起動
3. データノードを–initial付きで起動
4．SQLノード停止
5. Restore作業1（1台目だけは-mオプション付き）
6. Restore作業2 (2台目は-mは不要)
7. データ確認して完了
[root@cluster74_01 BACKUP]# pwd /usr/local/mysql-cluster-advanced-7.4.4-linux-glibc2.5-x86_64/data/BACKUP [root@cluster74_01 BACKUP]# ls -l 合計 0 drwxr-x---. 2 root root 72 3月 19 22:25 BACKUP-1 [root@cluster74_01 BACKUP]# [root@cluster74_01 cluster]# /usr/local/mysql/bin/ndb_mgm -- NDB Cluster -- Management Client -- ndb_mgm> shutdown ndb_mgm> exit [root@cluster74_01 cluster]# SQLノードも停止しました。 [root@cluster74_01 cluster]# /home/admin/cluster/start_management.sh Start MySQL Management Node MySQL Cluster Management Server mysql-5.6.23 ndb-7.4.4 Management Prompt /usr/local/mysql/bin/ndb_mgm [root@cluster74_01 cluster]# [root@cluster74_01 cluster]# /usr/local/mysql/bin/ndbd --connect-string=192.168.56.114 --initial 2015-03-19 23:25:38 [ndbd] INFO -- Angel connected to '192.168.56.114:1186' 2015-03-19 23:25:38 [ndbd] INFO -- Angel allocated nodeid: 1 [root@cluster74_01 cluster]# [root@cluster74_02 cluster]# /usr/local/mysql/bin/ndbd --connect-string=192.168.56.114 --initial 2015-03-19 23:26:51 [ndbd] INFO -- Angel connected to '192.168.56.114:1186' 2015-03-19 23:26:51 [ndbd] INFO -- Angel allocated nodeid: 2 [root@cluster74_02 cluster]# [root@cluster74_01 BACKUP]# /usr/local/mysql/bin/ndb_restore -b 1 -n 1 -m -r /usr/local/mysql/data/BACKUP/BACKUP-1 Backup Id = 1 Nodeid = 1 backup path = /usr/local/mysql/data/BACKUP/BACKUP-1 Opening file '/usr/local/mysql/data/BACKUP/BACKUP-1/BACKUP-1.1.ctl' File size 46920 bytes Backup version in files: ndb-6.3.11 ndb version: mysql-5.6.23 ndb-7.4.4 Stop GCP of Backup: 2447 Connected to ndb!! Successfully restored table `NDB01/def/T20150319` Successfully restored table event REPL$NDB01/T20150319 Successfully restored table `ndbmemcache/def/ndb_clusters` Successfully restored table event REPL$ndbmemcache/ndb_clusters 省略.... _____________________________________________________ Processing data in table: ndbmemcache/def/containers(18) fragment 0 _____________________________________________________ Processing data in table: ndbmemcache/def/cache_policies(16) fragment 0 _____________________________________________________ Processing data in table: ndbmemcache/def/key_prefixes(20) fragment 0 _____________________________________________________ Processing data in table: ndbmemcache/def/demo_table_tabs(28) fragment 0 _____________________________________________________ Processing data in table: ndbmemcache/def/memcache_server_roles(14) fragment 0 Opening file '/usr/local/mysql/data/BACKUP/BACKUP-1/BACKUP-1.1.log' File size 52 bytes Restored 15 tuples and 0 log entries NDBT_ProgramExit: 0 - OK [root@cluster74_01 BACKUP]# [root@cluster74_02 cluster]# /usr/local/mysql/bin/ndb_restore -b 1 -n 2 -r /usr/local/mysql/data/BACKUP/BACKUP-1 Backup Id = 1 Nodeid = 2 backup path = /usr/local/mysql/data/BACKUP/BACKUP-1 Opening file '/usr/local/mysql/data/BACKUP/BACKUP-1/BACKUP-1.2.ctl' File size 46920 bytes Backup version in files: ndb-6.3.11 ndb version: mysql-5.6.23 ndb-7.4.4 Stop GCP of Backup: 2447 Connected to ndb!! Opening file '/usr/local/mysql/data/BACKUP/BACKUP-1/BACKUP-1-0.2.Data' File size 31068 bytes 省略... _____________________________________________________ Processing data in table: ndbmemcache/def/demo_table(24) fragment 1 _____________________________________________________ Processing data in table: mysql/def/ndb_apply_status(9) fragment 1 _____________________________________________________ Processing data in table: ndbmemcache/def/containers(18) fragment 1 _____________________________________________________ Processing data in table: ndbmemcache/def/cache_policies(16) fragment 1 _____________________________________________________ Processing data in table: ndbmemcache/def/key_prefixes(20) fragment 1 _____________________________________________________ Processing data in table: ndbmemcache/def/demo_table_tabs(28) fragment 1 _____________________________________________________ Processing data in table: ndbmemcache/def/memcache_server_roles(14) fragment 1 Opening file '/usr/local/mysql/data/BACKUP/BACKUP-1/BACKUP-1.2.log' File size 52 bytes Restored 14 tuples and 0 log entries NDBT_ProgramExit: 0 - OK [root@cluster74_02 cluster]#
SQLノードを起動してデータ確認
[root@cluster74_01 cluster]# ./start_mysql.sh
Start MySQL Node
[root@cluster74_01 cluster]# 150319 23:45:00 mysqld_safe Logging to '/usr/local/mysql/data/cluster74_01.err'.
150319 23:45:00 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
[root@cluster74_01 cluster]#
[root@cluster74_02 cluster]# 150319 23:45:12 mysqld_safe Logging to '/usr/local/mysql/data/cluster74_02.err'.
150319 23:45:12 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
[root@cluster74_02 cluster]#
ndb_mgm> show
Connected to Management Server at: 192.168.56.114:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=1 @192.168.56.114 (mysql-5.6.23 ndb-7.4.4, Nodegroup: 0, *)
id=2 @192.168.56.115 (mysql-5.6.23 ndb-7.4.4, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=100 @192.168.56.114 (mysql-5.6.23 ndb-7.4.4)
[mysqld(API)] 2 node(s)
id=50 (not connected, accepting connect from 192.168.56.114)
id=51 (not connected, accepting connect from 192.168.56.115)
ndb_mgm> show
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=1 @192.168.56.114 (mysql-5.6.23 ndb-7.4.4, Nodegroup: 0, *)
id=2 @192.168.56.115 (mysql-5.6.23 ndb-7.4.4, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=100 @192.168.56.114 (mysql-5.6.23 ndb-7.4.4)
[mysqld(API)] 2 node(s)
id=50 @192.168.56.114 (mysql-5.6.23 ndb-7.4.4)
id=51 @192.168.56.115 (mysql-5.6.23 ndb-7.4.4)
ndb_mgm>
mysql> use NDB01;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+-----------------+
| Tables_in_NDB01 |
+-----------------+
| T20150319 |
+-----------------+
1 row in set (0.00 sec)
mysql> select * from T20150319;
+----+------------------------------------+
| id | memo |
+----+------------------------------------+
| 1 | This is MySQL Cluster 7.4.4 検証 |
+----+------------------------------------+
1 row in set (0.01 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%T20150319%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 0 | 0 |
| 1 | 1 | 32768 | 32608 |
| 2 | 0 | 0 | 0 |
| 2 | 1 | 32768 | 32608 |
+------+------+-------------+------------+
4 rows in set (0.06 sec)
mysql>
参照：
http://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-ndbinfo.html
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