DB 리플리케이션 초기 발생 에러 The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work (or the --replicate-same-server-id option must be used on slave but this does not always make sense; please check the manual before using it).서버간 server_id 가 동일해서 발생함 # 각 노드에서 sever_id 확인 node1 mysql> SHOW GLOBAL VARIABLES LIKE 'server_id'..
환경 centos8 KVM리눅스 TOP 모니터링중 CPU 100% 프로세스 발견 2347 root 20 0 25732 3884 1596 R 100.0 0.0 56807:26 ksmtuned설명 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_tuning_and_optimization_guide/chap-ksm Centos8 에서는 ksmtuned 기본 활성화 되어 있는듯 조치 service ksmtuned stop service ksmtuned start ksmtuned 재시작 (별 문제는 없는듯 함