老谢博客

SELECT table_name AS "Tables",
round(((data_length + index_length) / 1024 / 1024), 2) "Size in MB"
FROM information_schema.TABLES
WHERE table_schema = 'zabbix'
ORDER BY (data_length + index_length) DESC;
 
+----------------------------+------------+
| Tables                     | Size in MB |
+----------------------------+------------+
| history_uint               |   16452.17 |
| history                    |    3606.36 |
| history_str                |    2435.03 |
| trends_uint                |     722.48 |
| trends                     |     176.28 |
| history_text               |      10.03 |
| alerts                     |       7.47 |
| items                      |       5.78 |
| triggers                   |       3.72 |
| events                     |       2.64 |
| images                     |       1.53 |
| items_applications         |       0.70 |
| item_discovery             |       0.58 |
| functions                  |       0.53 |
| event_recovery             |       0.38 |
| item_preproc               |       0.38 |
………………

TRUNCATE TABLE history;
OPTIMIZE TABLE history;
 
TRUNCATE TABLE history_str;
OPTIMIZE TABLE history_str;
 
TRUNCATE TABLE history_uint;
OPTIMIZE TABLE history_uint;
 
TRUNCATE TABLE trends;
OPTIMIZE TABLE trends;
 
TRUNCATE TABLE trends_uint; 
OPTIMIZE TABLE trends_uint; 
 
TRUNCATE TABLE events;
OPTIMIZE TABLE events;

vim partition.sql
 
DELIMITER $$
CREATE PROCEDURE `partition_create`(SCHEMANAME varchar(64), TABLENAME varchar(64), PARTITIONNAME varchar(64), CLOCK int)
BEGIN
        /*
           SCHEMANAME = The DB schema in which to make changes
           TABLENAME = The table with partitions to potentially delete
           PARTITIONNAME = The name of the partition to create
        */
        /*
           Verify that the partition does not already exist
        */
 
        DECLARE RETROWS INT;
        SELECT COUNT(1) INTO RETROWS
        FROM information_schema.partitions
        WHERE table_schema = SCHEMANAME AND table_name = TABLENAME AND partition_description >= CLOCK;
 
        IF RETROWS = 0 THEN
        /*
           1. Print a message indicating that a partition was created.
           2. Create the SQL to create the partition.
           3. Execute the SQL from #2.
        */
        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$$
DELIMITER ;
DELIMITER $$
CREATE PROCEDURE `partition_drop`(SCHEMANAME VARCHAR(64), TABLENAME VARCHAR(64), DELETE_BELOW_PARTITION_DATE BIGINT)
BEGIN
        /*
           SCHEMANAME = The DB schema in which to make changes
           TABLENAME = The table with partitions to potentially delete
           DELETE_BELOW_PARTITION_DATE = Delete any partitions with names that are dates older than this one (yyyy-mm-dd)
        */
        DECLARE done INT DEFAULT FALSE;
        DECLARE drop_part_name VARCHAR(16);
 
        /*
           Get a list of all the partitions that are older than the date
           in DELETE_BELOW_PARTITION_DATE.  All partitions are prefixed with
           a "p", so use SUBSTRING TO get rid of that character.
        */
        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;
 
        /*
           Create the basics for when we need to drop the partition.  Also, create
           @drop_partitions to hold a comma-delimited list of all partitions that
           should be deleted.
        */
        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 indicate
           that no changes were made.
        */
        SELECT CONCAT(SCHEMANAME, ".", TABLENAME) AS `table`, "N/A" AS `partitions_deleted`;
        END IF;
END$$
DELIMITER ;
DELIMITER $$
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 OLD_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'));
 
        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');
        IF(PARTITION_NAME != OLD_PARTITION_NAME) THEN
    CALL partition_create(SCHEMA_NAME, TABLE_NAME, PARTITION_NAME, LESS_THAN_TIMESTAMP);
        END IF;
        SET @__interval=@__interval+1;
        SET OLD_PARTITION_NAME = PARTITION_NAME;
        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$$
DELIMITER ;
DELIMITER $$
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;
 
        /*
         * Check if any partitions exist for the given SCHEMANAME.TABLENAME.
         */
        SELECT COUNT(1) INTO RETROWS
        FROM information_schema.partitions
        WHERE table_schema = SCHEMANAME AND table_name = TABLENAME AND partition_name IS NULL;
 
        /*
         * If partitions do not exist, go ahead and partition the table
         */
        IF RETROWS = 1 THEN
        /*
         * Take the current date at 00:00:00 and add HOURLYINTERVAL to it.  This is the timestamp below which we will store values.
         * We begin partitioning based on the beginning of a day.  This is because we don't want to generate a random partition
         * that won't necessarily fall in line with the desired partition naming (ie: if the hour interval is 24 hours, we could
         * end up creating a partition now named "p201403270600" when all other partitions will be like "p201403280000").
         */
        SET FUTURE_TIMESTAMP = TIMESTAMPADD(HOUR, HOURLYINTERVAL, CONCAT(CURDATE(), " ", '00:00:00'));
        SET PARTITION_NAME = DATE_FORMAT(CURDATE(), 'p%Y%m%d%H00');
 
        -- Create the partitioning query
        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), "));");
 
        -- Run the partitioning query
        PREPARE STMT FROM @__PARTITION_SQL;
        EXECUTE STMT;
        DEALLOCATE PREPARE STMT;
        END IF;
END$$
DELIMITER ;
 
DELIMITER $$
CREATE PROCEDURE`partition_maintenance_all`(SCHEMA_NAME VARCHAR(32))
BEGIN
               CALL partition_maintenance(SCHEMA_NAME, 'history', 90, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'history_log', 90, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'history_str', 90, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'history_text', 90, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'history_uint', 90, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'trends', 730, 24, 14);
               CALL partition_maintenance(SCHEMA_NAME, 'trends_uint', 730, 24, 14);
END$$
DELIMITER ;
 
mysql -uzabbix -pzabbix zabbix < partition.sql
 
[root@zabbix ~]# cat zabbix_partitioning.sh 
#!/bin/bash
 
user='root'
password='zabbix'
database='zabbix'
 
mysql -u${user} -p$password $database -e "CALL partition_maintenance_all('zabbix');"
 
crontab -e
 
15 1 * * * bash /root/zabbix_partitioning.sh &>/tmp/partition.log
#第一次可以设置1分钟执行1次，然后查看日志文件是否允许正常
 
mysql> show create tables history_uint;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'tables history_uint' at line 1
mysql> 
mysql> show create table history_uint;
+--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table        | Create Table                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
+--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| history_uint | CREATE TABLE `history_uint` (
  `itemid` bigint(20) unsigned NOT NULL,
  `clock` int(11) NOT NULL DEFAULT '0',
  `value` bigint(20) unsigned NOT NULL DEFAULT '0',
  `ns` int(11) NOT NULL DEFAULT '0',
  KEY `history_uint_1` (`itemid`,`clock`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
/*!50100 PARTITION BY RANGE (`clock`)
(PARTITION p202104100000 VALUES LESS THAN (1618070400) ENGINE = InnoDB,
 PARTITION p202104110000 VALUES LESS THAN (1618156800) ENGINE = InnoDB,
 PARTITION p202104120000 VALUES LESS THAN (1618243200) ENGINE = InnoDB,
 PARTITION p202104130000 VALUES LESS THAN (1618329600) ENGINE = InnoDB,
 PARTITION p202104140000 VALUES LESS THAN (1618416000) ENGINE = InnoDB,
 PARTITION p202104150000 VALUES LESS THAN (1618502400) ENGINE = InnoDB,
 PARTITION p202104160000 VALUES LESS THAN (1618588800) ENGINE = InnoDB,
 PARTITION p202104170000 VALUES LESS THAN (1618675200) ENGINE = InnoDB,
 PARTITION p202104180000 VALUES LESS THAN (1618761600) ENGINE = InnoDB,
 PARTITION p202104190000 VALUES LESS THAN (1618848000) ENGINE = InnoDB,
 PARTITION p202104200000 VALUES LESS THAN (1618934400) ENGINE = InnoDB,
 PARTITION p202104210000 VALUES LESS THAN (1619020800) ENGINE = InnoDB,
 PARTITION p202104220000 VALUES LESS THAN (1619107200) ENGINE = InnoDB,
 PARTITION p202104230000 VALUES LESS THAN (1619193600) ENGINE = InnoDB) */ |
+--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)
 
在web界面，管理—-一般—-设置—管家，取消历史、趋势标识的管家功能。

./configure --prefix=/usr/local/zabbix --enable-server --enable-agent --with-mysql=/usr/local/mysql/bin/mysql_config --enable-ipv6 --with-net-snmp --with-libcurl --with-openssl --with-libxml2
#编译参数新增--with-libxml2，为了监控VMware vSphere主机做准备
 
create database zabbix character set utf8 collate utf8_bin;
#创建数据库使用utf8_bin编码
 
#zabbix_server.conf的DBSocket参数需要填写