cron

mysql中有大量sleep进程的原因与解决办法

由 我的梦境 提交于 2020-07-24 02:25:36
mysql 中有大量sleep进程的原因与解决办法 mysql服务器中有大量的sleep进程， 本文分析下mysql出现大sleep进程原因分析与解决方法。 可能的原因： 造成睡眠连接过多的原因？ 1.　使用了太多持久连接（个人觉得，在高并发[系统] ( http://www.2cto.com/os/)中，不适合使用持久连接） 2.　程序中，没有及时关闭mysql连接 3.　 数据库 查询不够优化，过度耗时。 当然，更根本的方法，还是从以上三点排查之： 　程序中，不使用持久链接，即使用mysql_connect而不是pconnect。 程序执行完毕，应该显式调用mysql_close 3.　只能逐步分析系统的SQL查询，找到查询过慢的SQL,优化之p 我是用排除法去定位问题，对于此原因，1和3通过分析，发现根本不满足 此处先排除是mysql 配置的问题，sleep的关闭时间是8个小时，默认值（show variables like 'wait_timeout';），并且服务器配置都是运维人员维护，我们的运维还是很出色的 排除1： 我的业务，php链接mysql并没有使用持久链接 mysql_pconnect,高并发系统框架中，都不会用持久链接的 排除3： 数据库查询不够优化？自己写的，不能够。如果真的有不够不够优化的sql，可以开启mysql慢查询日志查看，并优化之

快速汉化RHEL7

由 心已入冬 提交于 2020-07-23 16:51:31
本文档给出快速汉化RHEL7的方法，此方法同样适用于 CentOS 7,做汉化操作前，请确保yum源正常。 汉化前： 确保yum源正常 [root@localhost ~]# cd /etc/yum.repos.d/ [root@localhost yum.repos.d]# ls redhat.repo rhel7.repo [root@localhost yum.repos.d]# cat rhel7.repo [rhel7] name=rhel7 baseurl=file:///media/cdrom enabled=1 gpgcheck=0 [root@localhost yum.repos.d]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/rhel-root 17G 3.2G 14G 19% / devtmpfs 473M 0 473M 0% /dev tmpfs 489M 144K 489M 1% /dev/shm tmpfs 489M 14M 476M 3% /run tmpfs 489M 0 489M 0% /sys/fs/cgroup /dev/sda1 1014M 173M 842M 18% /boot tmpfs 98M 8.0K 98M 1% /run/user/0 /dev

Run a python script from with arguments (from argparse in python) from crontab

由 懵懂的女人 提交于 2020-07-20 05:49:26
问题 I have a python script which uses argparse and accepts a few arguments and run it from cron example: python test.py --a apple --b ball This needs to be scheduled from crontab .I can run it manually but cron fails to recognise the arguments .Please suggest solution. The cron job line looks like : * * * * * /pathtopython/python test.py --a apple --b ball > /tmp/abc.out 2>&1 回答1: crontest.py file code : import argparse parser = argparse.ArgumentParser() parser.add_argument('--a', help="First

Issue Running Artisan Command via Cronjob

由 て烟熏妆下的殇ゞ 提交于 2020-07-07 10:59:39
问题 I'm having a bit of a nightmare getting a crontab/cronjob to run an Artisan command. I have another Artisan command running via cronjob no problems but this second command won't run. Firstly, when I do 'crontab -e' and edit the file to contain: 0 0 * * * /usr/local/bin/php /home/purple/public_html/artisan feeds:send The cronjob doesn't run at all. If I go to cPanel and add the cronjob there, it runs but I receive the following error: open(public/downloads/feeds/events.csv): failed to open

Issue Running Artisan Command via Cronjob

由 余生长醉 提交于 2020-07-07 10:56:09
问题 I'm having a bit of a nightmare getting a crontab/cronjob to run an Artisan command. I have another Artisan command running via cronjob no problems but this second command won't run. Firstly, when I do 'crontab -e' and edit the file to contain: 0 0 * * * /usr/local/bin/php /home/purple/public_html/artisan feeds:send The cronjob doesn't run at all. If I go to cPanel and add the cronjob there, it runs but I receive the following error: open(public/downloads/feeds/events.csv): failed to open

The “next run” in wp crontrol plug in is not working

由 我们两清 提交于 2020-06-29 19:11:47
问题 I want to create a function which the function run in every 3 minute. I use plugin wp-crontrol to create a cron job event. I searched in Google and Stackoverflow, and the code in function.php is // Add a new interval of 180 seconds // See http://codex.wordpress.org/Plugin_API/Filter_Reference/cron_schedules add_filter( 'cron_schedules', 'isa_add_every_three_minutes' ); function isa_add_every_three_minutes( $schedules ) { $schedules['every_three_minutes'] = array( 'interval' => 180, 'display'

python script in cron not reading a CSV unless it creates the CSV itself

由 北城以北 提交于 2020-06-29 06:44:19
问题 I have the following script. It works when I run it in command line, and it works when I run it in cron. The variable 'apath' is the absolute path of the file. cat=['a','a','a','a','a','b','b','b','b','b'] val=[1,2,3,4,5,6,7,8,9,10] columns=['cat','val'] data=[cat,val] dict={key:value for key,value in zip(columns,data)} statedata_raw=pd.DataFrame(data=dict) statedata_raw.to_csv(apath+'state_data.csv',index=False) statedata_raw2=pd.read_csv(apath+'state_data.csv') statedata_raw2.to_csv(apath+

python script in cron not reading a CSV unless it creates the CSV itself

由 三世轮回 提交于 2020-06-29 06:44:11
问题 I have the following script. It works when I run it in command line, and it works when I run it in cron. The variable 'apath' is the absolute path of the file. cat=['a','a','a','a','a','b','b','b','b','b'] val=[1,2,3,4,5,6,7,8,9,10] columns=['cat','val'] data=[cat,val] dict={key:value for key,value in zip(columns,data)} statedata_raw=pd.DataFrame(data=dict) statedata_raw.to_csv(apath+'state_data.csv',index=False) statedata_raw2=pd.read_csv(apath+'state_data.csv') statedata_raw2.to_csv(apath+

Rails making new cron jobs based on user input

由 橙三吉。 提交于 2020-06-28 05:06:30
问题 In my application, I want to invoke an action every two weeks based on when the user triggered an action. I guess what's confusing is why there doesn't seem to be a straight forward way of doing this. Ideally, the repeated job would be set in the model , not some other file . For example, the whenever gem has these instructions: Getting started $ cd /apps/my-great-project $ wheneverize . This will create initial config/schedule.rb file for you. But I don't want to put my schedules in there. I

Crontab is not running my script. Catalina

由 岁酱吖の 提交于 2020-06-27 16:29:11
问题 I just have started to use crontab and have some problems with it. I have already read some posts about how to use it on macOS, but it still not working. So, my task is very easy: I write crontab -e, then edit it to */1 * * * * cliclick -w 1 m:3,3 (for example) - which mean repeat every 1 min. And nothing has changed. But, when I use just this command from terminal everything is ok. I have already try to create a script.sh file, and the same situation: from hand-command it works, and from
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