Programmer Think

brief introduction cron A library for managing timing tasks, using Go to achieve the effect of crontab command in Linux. We introduced a similar Go library before—— gron . gron code is small, which is better for learning. But its function is relatively simple, and it is no longer maintained. If there is a need for timed tasks, cron ...

Preface Recently, we are trying to use a log system, graylog, to collect the slow query log of mysql for subsequent analysis, monitoring and alarm. The test steps have been completed and the logs have been collected successfully. During the test, you need to brush some slow query logs. In order to brush more logs and not have a greater impact o ...

Please indicate the source of Reprint: http://blog.csdn.net/l1028386804/article/details/78965865 Most of DNS resolution is a domain name corresponding to an IP address, but through DNS polling technology, a domain name corresponding to multiple IPS can be achieved, so as to achieve the simplest and most efficient load balancing. However, the b ...

Summary MySQL EVENT is a scheduled task, similar to crontab task on LinuxIt mainly has the following properties In mysql, the objects of timing events are globally unique event performs operations according to the schedule, including one SQL operation. You can also use begin and end to implement multiple SQL composite execution The permission ...

Script function Brief 1. Export remote mysql database table data to local and save as file 2. Support the configuration of table information to be exported to the configuration file. The script will cycle the configuration file and parse the configuration file, and then complete the subsequent data export. 3. Incremental export by time is ...

Background introduction Scan the specified log directory every hour, empty the file directly after it exceeds 100M, and use it as a temporary means of operation and maintenance. The source code is mainly composed of two functions: reviewLogs() determines the log size and clears it; getdir() determines whether it is a dire ...

Previous link When reading, it is better to refer to the source code of easysoole 2.1.2 $inst->run();//Startup service The actual call here is the start method servermanager:: getinstance() - > start(); This method is mainly used to start the swoole service //Create master service $this->createMainServer(); In this code, the core ...

Ansible Common Modules Modules included in this section: (1) Timing task module cronvar (2) archive module (3) Unpacking module unarchive (4) Download module get_url (5) wait_for module (6) script module Timed Task Module cronvar In addition to the cron module itself, which can manage cron's environment variables, another module, cronvar, can ...

Problem finding Log in to the virtual machine, and according to the prompt message, it is found that it is suffering from SSH explosion attack, with IP address of 159.65.230.189. Check the log in related security logs: tail -f /var/log/secure, and find other attempts to blow up IP106.12.183.6, 182.61.166.179, 220.88.40.41. Baidu search IP add ...

1. Backup databaseBoth RMAN and expdp can be used.2. Backup Software Directory (node1/2) tar -czvf /u01/grid.tar.gz /u01/app/11.2.0/grid --exclude=/u01/app/11.2.0/grid/rdbms/audit/* tar -czvf /u01/database.tar.gz /u01/app/oracle/ --exclude=/u01/app/oracle/admin/orcl/adump/* 3. Backup OCR (node1/2) [grid@vastdata01 ~]$ cd $ORACLE_HOME/bin [g ...