cloudwatch logs

The entire life cycle of instance from creation to deletion is managed by Nova. In the following sections, we take the different operational scenarios in the instance life cycle as an example to analyze in detail how the different Nova components work together and deepen your understanding of Nova through log analysis.Before we study Nova's operations, let's start by learning one important thing: the OpenStack logs.OpenStack's log records very detailed details and is a powerful tool for learning

Tags: data recovery res work content operations DML management Cleanup Targe1: Binary Log The binary log records all DDL (data definition Language) statements and DML (data manipulation language) statements, but does not record statements that include data queries. Statements are saved as "events," which describe the process of changing the data, which plays an extremely important role in recovering data during a disaster. 2: Location and format of the log When started with the-log-bin[=file_nam

catalina.sh fileModify the 186 line "catalina_out=" $CATALINA _base "/logs/catalina.out " to 187 lines "catalina_out=" $CATALINA _base "/logs/ Opres.%y-%m-%d.out " content, log name can be defined by itself;Comment out 370 lines of "touch" $CATALINA _out "";383, 384 lines "Org.apache.catalina.startup.Bootstrap "[email protected]" start \>> "$CATALINA _out" 2>1 "" " Replace with 385, 386 lines "Org.apache.c

There is a lot of information in the log that you need to deal with, although sometimes it's not easy to extract it. In this article, we'll show you some examples of basic log analysis You can do now (you just need to search). We'll also cover some of the more advanced analyses, but these will require you to make the appropriate setup upfront and save a lot of time later on. Examples of advanced analysis of data include the generation of summary counts, filtering of valid values, and so on.We'll

The main reason people create logs is the wrong line. Usually you will diagnose what problems occur in your Linux system or application. An error message or a series of events can give you clues to find the root cause, explain how the problem occurred, and point out how to fix it. Here are a few examples of using logs to solve.Logon Failure ReasonIf you want to check if your system is secure, you can check

MySQL has the following several logs: Error log:-log-err Query log:-log Slow query log:-log-slow-queries Update log:-log-update Binary log:-log-bin Whether logging is enabled Mysql>show variables like ' log_% '; How to know the current log Mysql> Show master status; Display binary Log numbers Mysql> show master logs; See binary log file with Mysqlbinlog Shell>mysqlbinlog mail-bin.000001 or She

produce hostname-bin.000001 and Hostname-bin.index, the previous log file is to record all updates to the data, the following file is the index to store all the binaries, cannot be easily deleted. (3) Full backup, incremental backup. See mysqlfullbackup.sh, mysqldailybackup.sh script in detail ( note the backup directory inside the script, themysql Software installation directory, the compressed file name and the user name password, if there is a discrepancy, please modify ). The following is

I recently added support for Docker container logs in the Log collection feature. This article simply talks about strategy selection and how to handle it. About the container log for DockerI'm not going to say much about Docker, it's going to be hot for two years. Recently I was also deploying some components of the log system into Docker. Obviously, a lot of things will be restricted by containers after they run in containers, such as log files.When

space.Therefore, we need to regularly or manually delete large log files.The methods for deleting log files are as follows: I,Set Log Retention PeriodExpire_logs_daysAutomatic deletion #View the number of days for saving the current log:Show? Variables? Like? '% Expire_logs_days ';;#The default value is0, That isLogsIf it does not expire, you can set global parameters to make it take effect temporarily:Set?GlobalExpire_logs_days = 7;#Set to retain only7DaysBINLOG,Next restartMysqlThis parameter

technical innovation and maintenance mode innovation to reduce manual operation workload and improve maintenance efficiency. In the daily work of the maintenance department, periodic viewing of server operating system logs, application systems and database operation logs of each IT system is the key to ensuring early detection of problems and timely exception handling. In the past, IT support systems were

How to Restore Archive logs from a backup set in oracle How Does oracle capture archived logs from the backup set? In Dalian Hospital, the database is archived. However, after archiving, rman uses crontab to automatically archive the logs and delete the archived log files on the system. After the RealSync program stops for a period of time, archive

The nginx. PID file is lost and logs cannot be rotated normally. Solution:Cause of failure, after the log is migrated, The kill-USR1 PID is not successful, causing nginx to write the file handle is still in the old file. Fault Simulation:1: Our MV log file is. Bak2: Clear the nginx. PID file.3: The reload attempt fails because the PID file is empty. In this case, killall nginx is used and then nginx is started. [[Email protected] nginx] # ps-Ef | grep

Example One /script/cut_log.phps automatically cuts the Nginx Web Access log. The default will save 7 days of log, according to the hard disk space situation adjustment, as much as possible to save more log. This log is very important, such as the site is running abnormally, or the Web site is black, logs are very important detection channels. /script/del_log.sh automatically deletes other unimportant logs