• gearman安装

apt-get install gearman gearman-server libgearman-dev

配置bindip

/etc/defalut/gearman-job-server

PARAMS="--listen=0.0.0.0"

/etc/init.d/gearman-job-server start
/etc/init.d/gearman-job-server status
* gearmand is running

mysql_config无就安装下面的
apt-get install libmysqld-dev libmysqlclient-dev

mysql 查找plugin目录：

 show variables like '%plugin%';

编译安装 udf

CPPFLAGS=" -Werror -Wno-unused-but-set-variable" ./configure --with-mysql=/usr/bin/mysql_config --libdir=/usr/lib/mysql/plugin

make install

Libraries have been installed in:
/usr/lib/mysql/plugin

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'

安装函数UDF

CREATE FUNCTION gman_do RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_do_high RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_do_low RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_do_background RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_do_high_background RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_do_low_background RETURNS STRING
SONAME "libgearman_mysql_udf.so";
CREATE AGGREGATE FUNCTION gman_sum RETURNS INTEGER
SONAME "libgearman_mysql_udf.so";
CREATE FUNCTION gman_servers_set RETURNS STRING
SONAME "libgearman_mysql_udf.so";

• 配置GearmanIP

 SELECT gman_servers_set('127.0.0.1:4730');

CREATE FUNCTION json_array RETURNS STRING SONAME 'lib_mysqludf_json.so';
select * from mysql.func;
mysql> select * from mysql.func;
+--------------+-----+----------------------+----------+
| name | ret | dl | type |
+--------------+-----+----------------------+----------+
| json_array | 0 | lib_mysqludf_json.so | function |
| json_members | 0 | lib_mysqludf_json.so | function |
| json_values | 0 | lib_mysqludf_json.so | function |
+--------------+-----+----------------------+----------+

DROP FUNCTION json_array;

查看gearman队列

watch -n 1 "(echo status; sleep 0.1) | nc 127.0.0.1 4730"