[Python] codecademy-20140324
+ Inheritance # parent class class Car(object): condition = "new" def __init__(self, model, color, mpg): self.model = model self.color = color self.mpg = mpg # add class method def display_car(self):...
View Article[shell] mysql dump & compress
+ mysql_backup.sh #!/bin/bash ########################## # MySQL Backup Script ########################## # Backup Date, File Name, Directory Name DATE=`/bin/date +%Y%m%d` FILENAME="db_$DATE.sql"...
View Article[shell] advanced bash – 20140325
+ 몸풀기 연습문제 #!/bin/bash date >> ex2.txt echo >> ex2.txt w >> ex2.txt echo >> ex2.txt uptime >> ex2.txt
View ArticleESX/ESXi host locks a series of on-disk resource metadata structures delaying...
다수의 ESXi hosts 를 가진 shared storage 성능 저하 문제. vmfs metadata locking 때문에 나타나는 현상. ## ESXi 의 vmkernel.log 2014-04-06T18:03:08.812Z cpu2:2934)DLX: 3901: vol ‘datastore’: [Req mode: 1] Not free; Lock [type...
View Article[VMware] Troubleshooting Storage Performance in vSphere
스토리지 성능 트러블슈팅 http://blogs.vmware.com/vsphere/2012/05/troubleshooting-storage-performance-in-vsphere-part-1-the-basics-.html...
View Article[VMware] How many vmdk’s per vmfs partition?
스토리지 LUN 당 과연 얼마의 vmdk 를 할당하는 것이 적정 수준인가? 딱히 정해진 best practise 는 없는 거 같다. 검색하던 중 https://communities.vmware.com/message/979113#979113 대략적으로 계산하는 공식을 올려준 사람. 어떤 storage 를 사용하냐에 따라 차이는 있겠지만.. 참고.....
View Article[VMware] iSCSI 어댑터 및 스토리지 구성
iSCSI 어댑터 및 스토리지 구성을 위한 메뉴얼 http://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.vsphere.storage.doc_50/GUID-C476065E-C02F-47FA-A5F7-3B3F2FD40EA8.html iSCSI 를 구성할 때 고려해야할 사항 1. 같은 브로드캐스트 도메인과 서브넷...
View Article[VMware] Time counter stops in a virtual machine using HPET running on an...
- 관련 증상. http://lists.freebsd.org/pipermail/freebsd-stable/2012-August/069070.html 해결 방안 1. ESXi 패치 2. timcounter 변경 timecounter 확인 # sysctl kern.timecounter.hardware kern.timecounter.hardware=HPET...
View Article[Zabbix] MySQL monitoring with zabbix
https://www.zabbix.com/forum/showthread.php?t=5125 여기서 extended 를 status 로만 바꿈.. # zabbix_agentd.conf 수정 - 주석 해제 Include=/usr/local/etc/zabbix_agentd.conf.d/ # make...
View Article[nginx] Installation
reference – http://blog.outsider.ne.kr/792 download – http://nginx.org/en/download.html nginx configure – http://nginx.org/en/docs/configure.html nginx module – http://wiki.nginx.org/Modules ubuntu...
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