인터넷으로 서비스를 제공하기 위해 챙겨야 할 실용적인 보안 가이드 모처럼 소개할 만한 사이트를 찾음.. URL : https://www.gitbook.com/book/lesstif/web-service-hardening/details ebook : https://lesstif.gitbooks.io/web-service-hardening/content/ 엔지니어 분들이라면 아시겠지만… 이분이 전자책으로 엮어놓은 내용 처럼 편집하는 것 자체가 쉽지 않다. 기술적인 내용이야 알고 있다 치더라도.. 그걸 또 저렇게 담아 내는것은 다른 이야기니… 가서 참고 합시다…
origin : http://nfs.sourceforge.net/nfs-howto/ar01s05.html 5. Optimizing NFS Performance Careful analysis of your environment, both from the client and from the server point of view, is the first step necessary for optimal NFS performance. The first sections will address issues that are generally important to the client. Later (Section 5.3 and beyond), server side issues will be discussed. In both cases, these issues will not be limited exclusively to one side or the other, but it is useful to separate the two in order to get a clearer picture of cause and effect. Aside from the general network configuration – appropriate network capacity, faster NICs, full duplex settings in order to reduce collisions, agreement in network speed among the switches and hubs, etc. – one of the most important client optimization settings are the NFS data transfer buffer sizes, specified by the mount command [ more… ]
origin : http://blog.scene.ro/posts/apache-benchmark-apr_socket_recv/ Problem Apache Benchmark breaks with apr_socket_recv: Connection reset by peer (104) when performing a load test. This is even more annoying since we do not get results for the requests performed before this one. Context linux host, Ubuntu 14.04, 3.11.0-17-generic kernel performing a load test against a jekyll serve ran on localhost using ab v2.3 for the load test both jekyll and ab are being ran on the same machine Sample Output benny@alpha:~$ ab -c 50 -n 1000 http://localhost:8080/ This is ApacheBench, Version 2.3 <$Revision: 1528965 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Completed 600 requests Completed 700 requests Completed 800 requests Completed 900 requests apr_socket_recv: Connection reset by peer [ more… ]
config static port for nfsd on centos7 출처 : https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Storage_Administration_Guide/nfs-serverconfig.html#s2-nfs-nfs-firewall-config 설정파일 : /etc/sysconfig/nfs RPCMOUNTDOPTS=”-p 4002″ 와 MOUNTD_PORT=4002 옵션은 동일함 재시작 실행 후 포트 상태 확인
config static port for nfsd on centos6 출처 : https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/s2-nfs-nfs-firewall-config.html 설정파일 : /etc/sysconfig/nfs RQUOTAD_PORT=875 LOCKD_TCPPORT=4001 LOCKD_UDPPORT=4001 MOUNTD_PORT=4002 STATD_PORT=4000 #STATDARG=”-p 4000″ STATDARG=”-p 4000” 와 STATD_PORT=4000 옵션은 동일한것임.. 실행 후 포트 상태 확인 # rpcinfo -p program vers proto port service 100000 4 tcp 111 portmapper 100000 3 tcp 111 portmapper 100000 2 tcp 111 portmapper 100000 4 udp 111 portmapper 100000 3 udp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp 4000 status 100024 1 tcp 4000 status 100011 1 udp 875 rquotad 100011 2 udp 875 rquotad 100011 1 tcp 875 rquotad 100011 2 tcp 875 rquotad 100005 1 udp 4002 mountd 100005 1 tcp 4002 mountd 100005 2 udp 4002 mountd 100005 2 tcp 4002 mountd 100005 3 udp 4002 mountd 100005 3 tcp 4002 mountd 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 [ more… ]
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