Gearman版本
Gearman网址:gearman.org
0.14是标准C的版本,适合研究源码
0.33是C++版本,增加了gearadmin工具
1.1.11是最新版本
对于任务高度功能来说,各版本变化不大,主要的变化 是持久化功能与开发库的变化
安装Gearman
一、安装gearman服务
1.安装libevent./configure --prefix=/usr/local/gearman & make & make install
安装中的错误及解决:
configure: error: could not find boost 错误解决
#yum install boost-devel*
configure: error: could not find gperf 错误解决
#yum install gperf*
configure: error: Unable to find libuuid 错误解决
#yum install libuuid-devel
上面错误的原因是编译器找不到 头文件
3.安装gearman php扩展
版本依赖关系:gearm C lib为0.14版本的,PHP为5.3.6,其它版本不能保证安装成功
tar xzvf gearman-0.7.0.tgz通过网页访问:http://localhost:8084/phptest/Gearman-Monitor/index.php
Gearman使用
gearmand
这个是Job Server的执行主进程,提供了以下参数
General options:
-b [ --backlog ] arg (=32) Number of backlog connections for
listen.
-d [ --daemon ] Daemon, detach and run in the
background.
-f [ --file-descriptors ] arg Number of file descriptors to allow for
the process (total connections will be
slightly less). Default is max allowed
for user.
-h [ --help ] Print this help menu.
-j [ --job-retries ] arg (=0) Number of attempts to run the job
before the job server removes it. This
is helpful to ensure a bad job does not
crash all available workers. Default is
no limit.
-l [ --log-file ] arg (=/usr/local/var/log/gearmand.log)
Log file to write errors and
information to. If the log-file
paramater is specified as 'stderr',
then output will go to stderr
-L [ --listen ] arg Address the server should listen on.
Default is INADDR_ANY.
-p [ --port ] arg (=4730) Port the server should listen on.
-P [ --pid-file ] arg (=/usr/local/var/gearmand.pid)
File to write process ID out to.
-r [ --protocol ] arg Load protocol module.
-R [ --round-robin ] Assign work in round-robin order per
worker connection. The default is to
assign work in the order of functions
added by the worker.
-q [ --queue-type ] arg Persistent queue type to use.
#队列持久化类型,libdrizzle=mysql,libmemcached=memcached,libsqlite3=sqlite,libpq=postgresql,libtokyocabinet=tokyocabinet
--config-file arg (=/usr/local/etc/gearmand.conf)
Can be specified with '@name', too
--syslog Use syslog.
-t [ --threads ] arg (=4) Number of I/O threads to use.
Default=4.
-u [ --user ] arg Switch to given user after startup.
--verbose arg (=ERROR) Set verbose level (FATAL, ALERT,
CRITICAL, ERROR, WARNING, NOTICE, INFO,
DEBUG).
-V [ --version ] Display the version of gearmand and
exit.
-w [ --worker-wakeup ] arg (=0) Number of workers to wakeup for each
job received. The default is to wakeup
all available workers.
-b, --backlog= 储备的监听连接数量
-d, --daemon 后台运行
-f, --file-descriptors= 文件描述符的数量
-h, --help 帮助
-j, --job-retries= 在job server移除不可用job之前运行的次数,防止不断运行导致其他可用worker崩溃。默认没有限制
-l, -log-file= 日志文件存放位置(默认记录最简单日志)
-L, --listen= 监听的IP,默认全部接受
-p, --port= 指定监听端口
-P, --pid-file= 指定进程ID写入位置
-r, --protocol= 加载协议模块
-q, --queue-type= 指定持久化队列
-t, --threads= 使用的I/O线程数量。默认为0
-u, --user= 启动后,切换到指定用户
-v, --verbose 增加一级详细程度
-V, --version 显示版本信息
HTTP:
--http-port arg (=8080) Port to listen on.
#下面是针对--queue-type不同类型时的不同参数
libsqlite3:
--libsqlite3-db arg Database file to use.
--libsqlite3-table arg (=gearman_queue)
Table to use.
gearmand还有一些其它参数选项,取决于编译时带的参数,如--with-libdrizzle和--with-libmemcached,可以将队列放到MySQL或Memcached中
一般正常使用如下:
/usr/local/sbin/gearmand -l /usr/local/gearman/log/trace.log --verbose INFO -p 4730 -d
gearman
这个模拟client和server的gearman程序
Client mode: gearman [options] [<data>]
Worker mode: gearman -w [options] [<command> [<args> ...]]
Common options to both client and worker modes.
-f <function> - Function name to use for jobs (can give many)
-h <host> - Job server host
-H - Print this help menu
-p <port> - Job server port
-t <timeout> - Timeout in milliseconds
-i <pidfile> - Create a pidfile for the process
Client options:
-b - Run jobs in the background
-I - Run jobs as high priority
-L - Run jobs as low priority
-n - Run one job per line
-N - Same as -n, but strip off the newline
-P - Prefix all output lines with functions names
-s - Send job without reading from standard input
-u <unique> - Unique key to use for job
Worker options:
-c <count> - Number of jobs for worker to run before exiting
-n - Send data packet for each line
-N - Same as -n, but strip off the newline
-w - Run in worker mode
如:
#session1
gearman -w -f func1 &
#这实际上就启动了一个worker,并注册一个函数func1在Job Server上
#session2
gearman -I -f func1 test
#这时session1那边就会显示一个"test"
gearadmin
该工具是在0.33版本以后增加的功能
Options:
--help Options related to the program.
-h [ --host ] arg (=localhost) Connect to the host
-p [ --port ] arg (=4730) Port number or service to use for connection
--server-version Fetch the version number for the server.
--server-verbose Fetch the verbose setting for the server.
--create-function arg Create the function from the server.
--drop-function arg Drop the function from the server.
--getpid Get Process ID for the server.
--status Status for the server.
--workers Workers for the server.
--shutdown Shutdown server.
command line
用telnet直接连接gearmand,可以以命令行的方式查看Job Server状态
telnet localhost 4830
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
workers
30 127.0.0.1 - : jfytest jfytest2 #显示连接的worker及注册的函数
status
jfytest 0 0 1 #某个函数的客户端队列请求
jfytest2 0 0 1 #Function Name,Jobs in queue,Jobs running,Workers registered
maxqueue jfytest 10000 #设置某个函数最大队列数,如果只有两个参数则不限制
OK
version
OK 0.33
shutdown graceful #graceful代表优雅关闭,否则强制关闭,不管队列状态
OK
verbose #当前log级别
OK INFO