最近一个项目需要用30个左右的jmeter客户端来做压力测试,需要做一些部署和配置工作,这时我喜欢的Fabric就可以发挥它的力量了。其中,我希望将jmeter施压段放到后台去运行,最开始将“nohup xxx &”放到fabric的run()中执行时,却没有执行;后来看了下文档,并做了些实验。对于直接使用“&”放到后台执行的情况,Fabric推荐使用如下3种情况来替代(按鲁棒性从高到低排列):1.使用已经存在daemon技术,如init、supervisord、upstart、systemd等,例如:/etc/init.d/tomcat restart 这样的命令,另外supervisord我也是很喜欢的。2.使用screen、tmux、dtach等工具来从当前shell中detach进程。如:screen -d -m sleep 10 这样的命令。注:要设置pty=False,如 run(‘screen -d -m sleep 10′, pty=False)。3.使用nohup,不过确实如官方文档所说只有部分用户能成功,我用nohup在run()中时就遇到了问题后该用screen了。共享一个前几天写的jmeter相关的fabfile吧:https://github.com/smilejay/python/blob/master/py2015/unified_order_fabfile.pyView CodePYTHON1
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58#!/usr/bin/env python# a fabfile to manange the performance test for unified order project.# usage: fab -f unified_order_fabfile.py start_jmeter -P -z 30# author: Jay fromfabric.context_managersimportcdfromfabric.operationsimportrun, putfromfabric.apiimporttask, env
env.hosts=['192.168.1.2','192.168.1.3','192.168.1.4']env.port=22env.user='root'env.password='123456'
@taskdefhostname():# show hostname # just for testingwithcd('/tmp'):
run('hostname')
@taskdefcopy_jmeter():# copy jmeter to other machineswithcd('/tmp'):
run('rm -rf jakarta-jmeter-2.3.4')put('jakarta-jmeter-2.3.4','/tmp/')run('cd jakarta-jmeter-2.3.4/bin; chmod a+x jmeter')#run('ls /tmp/')
@taskdefstart_jmeter():# run jmeter in all test clients#with cd('/tmp/'):withcd('/tmp/jakarta-jmeter-2.3.4/bin/'):
run('screen -d -m ./jmeter -n -t my-order.jmx -l log.jtl &>abc.log')#run('./jmeter -n -t unified-order.jmx -l log.jtl &>abc.log')#run('screen -d -m sleep 10', pty=False)#run('service tomcat start', pty=False)
@taskdefkill_jmeter():# kill the jmeter processes for unified order projectwithcd('/tmp/'):
pids = run("ps -ef | grep unified | grep -v 'grep' | awk '{print $2'}")pid_list = pids.split('\r\n')foriinpid_list:
run('kill -9 %s'%i)
@taskdefget_status():# get jmeter(java) running statuswithcd('/tmp'):
run('ps -ef | grep unified | grep java | grep -v grep')参考文档:http://fabric.readthedocs.org/en/1.6/faq.htmlOriginal article:fabric执行在后台运行的命令©2015笑遍世界. All Rights Reserved.