logrotate 후 MariaDB 저속 로그가 기록되지 않음

Question

MariaDB 서버 중 하나의 logrotate에 문제가 있습니다. Logrotate는 아무런 오류없이 (apperently) 실행 중입니다. mariadb-slow.log 파일을 회전 한 후 MariaDB는 새 로그 파일에 메시지를 쓰지 않습니다. 이 문제는 mariadb-slow.log에만 영향을 미칩니다.

logrotate 구성 파일의 postrotate 섹션에서 mysqladmin 명령을 실행하면 maraidb-slow.log가 다시 기록됩니다.

mysqladmin --defaults-file="/etc/mysql/debian.cnf" --local flush-error-log flush-engine-log flush-general-log flush-slow-log 

수동으로 logrotate를 실행하면 문제가 발생합니다. 에 -v 매개 변수를 추가

logrotate /etc/logrotate.d/mysql-server 

은 logrotate에 구성 파일이 패키지 관리자에서 하나입니다

logrotate -v /etc/logrotate.d/mysql-server 
reading config file /etc/logrotate.d/mysql-server 
Reading state from file: /var/lib/logrotate/status 
Allocating hash table for state file, size 64 entries 
Creating new state 
... 
Creating new state 

Handling 1 logs 

rotating pattern: /var/log/mysql/mysql.log /var/log/mysql/mysql-slow.log /var/log/mysql/mariadb-slow.log /var/log/mysql/error.log 1024 bytes (7 rotations) 
empty log files are rotated, old logs are removed 
considering log /var/log/mysql/mysql.log 
    log /var/log/mysql/mysql.log does not exist -- skipping 
considering log /var/log/mysql/mysql-slow.log 
    log /var/log/mysql/mysql-slow.log does not exist -- skipping 
considering log /var/log/mysql/mariadb-slow.log 
    Now: 2017-11-15 15:02 
    Last rotated at 2017-11-15 13:54 
    log needs rotating 
considering log /var/log/mysql/error.log 
    Now: 2017-11-15 15:02 
    Last rotated at 2017-11-15 13:54 
    log needs rotating 
rotating log /var/log/mysql/mariadb-slow.log, log->rotateCount is 7 
dateext suffix '-20171115' 
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' 
renaming /var/log/mysql/mariadb-slow.log.7.gz to /var/log/mysql/mariadb-slow.log.8.gz (rotatecount 7, logstart 1, i 7), 
renaming /var/log/mysql/mariadb-slow.log.6.gz to /var/log/mysql/mariadb-slow.log.7.gz (rotatecount 7, logstart 1, i 6), 
old log /var/log/mysql/mariadb-slow.log.6.gz does not exist 
renaming /var/log/mysql/mariadb-slow.log.5.gz to /var/log/mysql/mariadb-slow.log.6.gz (rotatecount 7, logstart 1, i 5), 
renaming /var/log/mysql/mariadb-slow.log.4.gz to /var/log/mysql/mariadb-slow.log.5.gz (rotatecount 7, logstart 1, i 4), 
renaming /var/log/mysql/mariadb-slow.log.3.gz to /var/log/mysql/mariadb-slow.log.4.gz (rotatecount 7, logstart 1, i 3), 
renaming /var/log/mysql/mariadb-slow.log.2.gz to /var/log/mysql/mariadb-slow.log.3.gz (rotatecount 7, logstart 1, i 2), 
renaming /var/log/mysql/mariadb-slow.log.1.gz to /var/log/mysql/mariadb-slow.log.2.gz (rotatecount 7, logstart 1, i 1), 
renaming /var/log/mysql/mariadb-slow.log.0.gz to /var/log/mysql/mariadb-slow.log.1.gz (rotatecount 7, logstart 1, i 0), 
old log /var/log/mysql/mariadb-slow.log.0.gz does not exist 
rotating log /var/log/mysql/error.log, log->rotateCount is 7 
dateext suffix '-20171115' 
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' 
renaming /var/log/mysql/error.log.7.gz to /var/log/mysql/error.log.8.gz (rotatecount 7, logstart 1, i 7), 
renaming /var/log/mysql/error.log.6.gz to /var/log/mysql/error.log.7.gz (rotatecount 7, logstart 1, i 6), 
renaming /var/log/mysql/error.log.5.gz to /var/log/mysql/error.log.6.gz (rotatecount 7, logstart 1, i 5), 
renaming /var/log/mysql/error.log.4.gz to /var/log/mysql/error.log.5.gz (rotatecount 7, logstart 1, i 4), 
renaming /var/log/mysql/error.log.3.gz to /var/log/mysql/error.log.4.gz (rotatecount 7, logstart 1, i 3), 
renaming /var/log/mysql/error.log.2.gz to /var/log/mysql/error.log.3.gz (rotatecount 7, logstart 1, i 2), 
renaming /var/log/mysql/error.log.1.gz to /var/log/mysql/error.log.2.gz (rotatecount 7, logstart 1, i 1), 
renaming /var/log/mysql/error.log.0.gz to /var/log/mysql/error.log.1.gz (rotatecount 7, logstart 1, i 0), 
old log /var/log/mysql/error.log.0.gz does not exist 
renaming /var/log/mysql/mariadb-slow.log to /var/log/mysql/mariadb-slow.log.1 
creating new /var/log/mysql/mariadb-slow.log mode = 0640 uid = 110 gid = 4 
renaming /var/log/mysql/error.log to /var/log/mysql/error.log.1 
creating new /var/log/mysql/error.log mode = 0640 uid = 110 gid = 4 
running postrotate script 
compressing log with: /bin/gzip 
removing old log /var/log/mysql/mariadb-slow.log.8.gz 
compressing log with: /bin/gzip 
removing old log /var/log/mysql/error.log.8.gz 

눈에 띄는 아무것도 표시되지 않습니다. 나는 어떤 수정도하지 않았다. 나는 또한 다른 것들을 시도했다.

/var/log/mysql/mysql.log /var/log/mysql/mysql-slow.log /var/log/mysql/mariadb-slow.log /var/log/mysql/error.log { 
     # daily 
     size 1k 
     rotate 7 
     missingok 
     create 640 mysql adm 
     compress 
     sharedscripts 
     postrotate 
      test -x /usr/bin/mysqladmin || exit 0 
      if [ -f `my_print_defaults --mysqld | grep -m 1 -oP "pid-file=\K.+$"` ]; then 
      # If this fails, check debian.conf! 
      mysqladmin --defaults-file=/etc/mysql/debian.cnf -v --local flush-error-log \ 
       flush-engine-log flush-general-log flush-slow-log >> /var/log/mysql-logrotate.log 2>&1 
      fi 
     endscript 
} 

이 문제에 대한 학습 후, 난 그냥

>> /var/log/mysql-logrotate.log 2>&1 

그러나 MySQL의-logrotate.log는 빈칸을 추가했다.

소프트웨어 사용 : OS : 데비안 9.1 DB : MariaDB 10.1 logrotate에 : 3.11.0

Answer 1

확인을, 나는 mysqladmin 데이터 명령

test -x /usr/bin/mysql || exit 0 
      mysql --defaults-file=/etc/mysql/debian.cnf -e "FLUSH SLOW LOGS;" 

mariadb 전에 반드시 postrotate에 다음을 둘 때 -slow.log는 회전되고 회전 후에 기록 될 수 있습니다.