MySQL error log(PLC)

Rsyslog : MySQL Error 로그와 Slow-Query 취합을 위한 설정

1. rsyslog conf 설정

1-1. 설정

vi /etc/rsyslog.d/80-mysql.conf

#variables required for non-syslog log file forwarding – mysql error
#edit on your location

input(type=”imfile”
File=”/var/log/mysqld.log”
Tag=”mysqld-errors”
Severity=”error”
Facility=”local7″)

input(type=”imfile”
File=”/var/log/mysql-slow.log”
Tag=”mysql-slow”
Severity=”notice”
Facility=”local7″)

###### Creates a template for each log file in the Logentries UI
### logic to apply the relevant templates to the different log files

if $programname == ‘mysqld-errors’ then /var/log/plura/ceelog-127.0.0.1.log;CEETemplate
:programname, isequal, “mysqld-errors” ~

if $programname == ‘mysql-slow’ then /var/log/plura/ceelog-127.0.0.1.log;CEETemplate
:programname, isequal, “mysql-slow” ~

1-2. rsyslog 데몬 재시작

systemctl restart rsyslog

1-3. PLURA V5 repo 에서 다운로드 받기

wget https://repo.plura.io/v5/module/rsyslog/80-mysql.conf
curl https://repo.plura.io/v5/module/rsyslog/80-mysql.conf -o /etc/rsyslog.d/80-mysql.conf

2. MySQL – SLOW QUERY 설정

2-1. 설정

vi /etc/my.cnf

[mysqld]
slow_query_log = 1
slow_query_log_file = /var/log/mysql-slow.log
long_query_time = 3

2-2. 로그 파일 생성 및 권한 설정

touch /var/log/mysql-slow.log
chown mysql.mysql /var/log/mysql-slow.log

2-3. 권한 확인

ls -aZ /var/log/mysql*

2-4. mysql 데몬 재시작

systemctl restart mysqld

2-5. 활성화 확인

mysql> show variables like ‘slow_query_%’;

3. 로그 확인

Error 또는 Slow Query 발생 후 호스트 로그에서 MySQL 관련 로그를 확인
로그 예시 : 전체로그 > 호스트

참고 사이트

https://www.rsyslog.com/doc/v8-stable/configuration/modules/imfile.html

PreviousXrdp NextApplication log(PLC)

Last updated 3 months ago

#variables required for non-syslog log file forwarding – mysql error #edit on your location input(type=”imfile” File=”/var/log/mysqld.log” Tag=”mysqld-errors” Severity=”error” Facility=”local7″) input(type=”imfile” File=”/var/log/mysql-slow.log” Tag=”mysql-slow” Severity=”notice” Facility=”local7″) ###### Creates a template for each log file in the Logentries UI ### logic to apply the relevant templates to the different log files if $programname == ‘mysqld-errors’ then /var/log/plura/ceelog-127.0.0.1.log;CEETemplate :programname, isequal, “mysqld-errors” ~ if $programname == ‘mysql-slow’ then /var/log/plura/ceelog-127.0.0.1.log;CEETemplate :programname, isequal, “mysql-slow” ~