1. MySQL版本和配置文件

采用percona5.5, 配置文件：

[root@gazelle ~]# cat /etc/my.cnf
[mysqld] 
socket=/var/lib/mysql/mysql.sock
user=mysql
symbolic-links=0
character-set-server = utf8
datadir=/home/mysqldata
skip-external-locking
skip-name-resolve
#network
connect_timeout =60 
wait_timeout = 28800
max_connections =5000 
back_log = 300
max_allowed_packet =64M 
max_connect_errors =1000 
#limits 
tmp_table_size =512M 
max_heap_table_size =256M 
table-cache = 4096
key_buffer_size = 128M
sort-buffer-size = 16M
join-buffer-size = 16M
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
thread-cache-size = 16
thread-concurrency = 24
query-cache-size = 4096M
query-cache-limit = 4M
#innodb 
#innodb_data_file_path=ibdata1:128M:ibdata2:128M:autoextend:max:4096M
innodb_file_per_table = 1
innodb_file_io_threads = 4
innodb_open_files = 2048
innodb_status_file =1 
innodb_additional_mem_pool_size =128M 
innodb_thread_concurrency = 16
innodb_max_dirty_pages_pct = 90
innodb_buffer_pool_size =14G
innodb_flush_method =O_DIRECT 
#innodb_io_capacity =2000 
innodb_flush_log_at_trx_commit=2
innodb_support_xa =0 
innodb_log_file_size =512M 
innodb_log_buffer_size =128M 
#log-queries-not-using-indexes 
# other stuff
event_scheduler =1
query_cache_type =0
#log
log_warnings
slow_query_log=1
long_query_time=20
slow_query_log_file=/var/log/mysql/slow-queries.log
log-error=/var/log/mysql/mysqld-error.log

[mysqld_safe]
pid-file=/var/run/mysqld/mysqld.pid

2. 表結構修改(參考itnihao的書)

ALTER TABLE housekeeper ENGINE = BLACKHOLE;
ALTER TABLE history_text DROP primary key, ADD index (id), DROP index history_text_2, ADD index history_text_2 (itemid, id);
ALTER TABLE history_logDROP primary key, ADD index (id), DROP index history_log_2, ADD index history_log_2 (itemid, id);

3. 表分區

/*
auto patition
*/
DROP PROCEDURE IF EXISTS `partition_create` ;

DELIMITER //
CREATE PROCEDURE `partition_create` (SCHEMANAME VARCHAR(64), TABLENAME VARCHAR(64), PARTITIONNAME VARCHAR(64), CLOCK INT)
BEGIN
    DECLARE RETROWS INT;
    SELECT COUNT(1) INTO RETROWS
        FROM `information_schema`.`partitions`
        WHERE `table_schema` = SCHEMANAME AND `TABLE_NAME` = TABLENAME AND `partition_name` = PARTITIONNAME;
    IF RETROWS = 0 THEN
        SELECT CONCAT("partition_create(", SCHEMANAME, ",", TABLENAME, "`,`", PARTITIONNAME, "`,`", CLOCK, ")" ) AS msg;
            SET @SQL = CONCAT('ALTER TABLE ', SCHEMANAME, '.', TABLENAME,
                ' ADD PARTITION (PARTITION ', PARTITIONNAME,' VALUES LESS THAN (', CLOCK,'));');
        PREPARE STMT FROM @SQL;
        EXECUTE STMT;
        DEALLOCATE PREPARE STMT;
    END IF;
END//
DELIMITER ;




DROP PROCEDURE IF EXISTS `partition_drop` ;

DELIMITER $$
CREATE PROCEDURE `partition_drop` (SCHEMANAME VARCHAR(64), TABLENAME VARCHAR(64), DELETE_BELOW_PARTITION_DATE BIGINT)
BEGIN
    DECLARE done INT DEFAULT FALSE;
    DECLARE drop_part_name VARCHAR(16);
    DECLARE myCursor CURSOR FOR
    SELECT partition_name
        FROM information_schema.partitions
        WHERE table_schema = SCHEMANAME AND TABLE_NAME = TABLENAME AND CAST(SUBSTRING(partition_name FROM 2) AS UNSIGNED) < DELETE_BELOW_PARTITION_DATE;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

    SET @alter_header = CONCAT("ALTER TABLE ", SCHEMANAME,".", TABLENAME," DROP PARTITION ");
    SET @drop_partitions ="";
       /*
          Start looping through all the partitions that are too old.
       */
    OPEN myCursor;
    read_loop: LOOP
        FETCH myCursor INTO drop_part_name;
        IF done THEN
            LEAVE read_loop;
        END IF;
        SET @drop_partitions =IF(@drop_partitions ="", drop_part_name, CONCAT(@drop_partitions,",", drop_part_name));
    END LOOP;
    IF @drop_partitions !=""THEN
               /*
                  1. Build the SQL to drop all the necessary partitions.
                  2. Run the SQL to drop the partitions.
                  3. Print out the table partitions that were deleted.
               */
        SET @full_sql = CONCAT(@alter_header, @drop_partitions,";");
        PREPARE STMT FROM @full_sql;
        EXECUTE STMT;
        DEALLOCATE PREPARE STMT;
        SELECT CONCAT(SCHEMANAME,".", TABLENAME) AS `table`, @drop_partitions AS `partitions_deleted`;
    ELSE
               /*
                  No partitions are being deleted, so print out "N/A" (Not
                    applicable) to indicatethat no changes were made.
               */
        SELECT CONCAT(SCHEMANAME,".", TABLENAME) AS `table`, "N/A" AS `partitions_deleted`;
    END IF;
END$$
DELIMITER ;


DROP PROCEDURE IF EXISTS `partition_maintenance` ;

DELIMITER $$
CREATE PROCEDURE `partition_maintenance` (SCHEMA_NAME VARCHAR(32),TABLE_NAME VARCHAR(32), KEEP_DATA_DAYS INT, HOURLY_INTERVAL INT, CREATE_NEXT_INTERVALS INT)
BEGIN
    DECLARE OLDER_THAN_PARTITION_DATE VARCHAR(16);
    DECLARE PARTITION_NAME VARCHAR(16);
    DECLARE LESS_THAN_TIMESTAMP INT;
    DECLARE CUR_TIME INT;
    CALL partition_verify(SCHEMA_NAME,TABLE_NAME, HOURLY_INTERVAL);
    SET CUR_TIME = UNIX_TIMESTAMP(DATE_FORMAT(NOW(),'%Y-%m-%d 00:00:00'));
    IF DATE(NOW()) = '2014-04-01' THEN
        SET CUR_TIME = UNIX_TIMESTAMP(DATE_FORMAT(DATE_ADD(NOW(),INTERVAL 1 DAY),'%Y-%m-%d 00:00:00'));
    END IF;
    SET @__interval = 1;
    create_loop: LOOP
        IF @__interval > CREATE_NEXT_INTERVALS THEN
            LEAVE create_loop;
        END IF;
        SET LESS_THAN_TIMESTAMP = CUR_TIME +(HOURLY_INTERVAL * @__interval *3600);
        SET PARTITION_NAME = FROM_UNIXTIME(CUR_TIME + HOURLY_INTERVAL *(@__interval -1)*3600,'p%Y%m%d%H00');
        CALL partition_create(SCHEMA_NAME,TABLE_NAME, PARTITION_NAME, LESS_THAN_TIMESTAMP);
        SET @__interval = @__interval +1;
    END LOOP;
    SET OLDER_THAN_PARTITION_DATE=DATE_FORMAT(DATE_SUB(NOW(),INTERVAL KEEP_DATA_DAYS DAY),'%Y%m%d0000');
    CALL partition_drop(SCHEMA_NAME,TABLE_NAME, OLDER_THAN_PARTITION_DATE);
END$$
DELIMITER ;

DROP PROCEDURE IF EXISTS `partition_verify` ;
DELIMITER $$
CREATE PROCEDURE `partition_verify` (SCHEMANAME VARCHAR(64), TABLENAME VARCHAR(64), HOURLYINTERVAL INT(11))
BEGIN
    DECLARE PARTITION_NAME VARCHAR(16);
    DECLARE RETROWS INT(11);
    DECLARE FUTURE_TIMESTAMP TIMESTAMP;
    SELECT COUNT(1) INTO RETROWS
        FROM information_schema.partitions
        WHERE table_schema = SCHEMANAME AND TABLE_NAME= TABLENAME AND partition_name IS NULL;
    IF RETROWS = 1 THEN
        SET FUTURE_TIMESTAMP = TIMESTAMPADD(HOUR, HOURLYINTERVAL, CONCAT(CURDATE()," ",'00:00:00'));
        SET PARTITION_NAME = DATE_FORMAT(CURDATE(),'p%Y%m%d%H00');
        SET @__PARTITION_SQL = CONCAT("ALTER TABLE ", SCHEMANAME,".", TABLENAME," PARTITION BY RANGE(`clock`)");
        SET @__PARTITION_SQL = CONCAT(@__PARTITION_SQL,"(PARTITION ", PARTITION_NAME," VALUES LESS THAN (", UNIX_TIMESTAMP(FUTURE_TIMESTAMP),"));");
        PREPARE STMT FROM @__PARTITION_SQL;
        EXECUTE STMT;
        DEALLOCATE PREPARE STMT;
    END IF;
    END$$
DELIMITER ;

DROP PROCEDURE IF EXISTS `partition_maintenance_all` ;

DELIMITER $$
CREATE PROCEDURE `partition_maintenance_all`(SCHEMA_NAME VARCHAR(32))
BEGIN
       CALL partition_maintenance(SCHEMA_NAME, 'history', 28, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'history_log', 28, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'history_str', 28, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'history_text', 28, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'history_uint', 28, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'trends', 730, 24, 14);
       CALL partition_maintenance(SCHEMA_NAME, 'trends_uint', 730, 24, 14);
END$$
DELIMITER ;

CALL partition_maintenance_all('zabbix');

# 1 1 * * *   mysql  -uzabbix -pzabbix zabbix -e "CALL partition_maintenance_all('zabbix')"