NFS tips and tricks: Difference between revisions
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(Created page with " == nfsd: too many open connections, consider increasing the number of threads == NFS uses threads on the server to handle incoming and outgoing I/O requests. Using threads helps NFS scale to handle large numbers of clients and large numbers of I/O requests. dmesg display when reach some high number of clients. should increase Number of NFS daemons (''nfsd'') by changing the RPCNFSDCOUNT variable in <code>/etc/default/nfs-kernel-server</code> on a Debian-based machine....") |
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{{Status | |||
|status=Draft | |||
|owner=Knowledge Agent | |||
|last_update=2026-07-16 | |||
|review=Pending | |||
}} | |||
{{TOC}} | |||
== Overview == | |||
NFS tips and tricks에 대한 기술 문서입니다. | |||
=== Summary === | |||
* 무엇인가? - NFS tips and tricks | |||
* 왜 필요한가? - HPC 및 서버 환경에서 필수 개념 | |||
* 언제 사용하는가? - 서버 구성, 성능 튜닝, 문제 해결 시 | |||
== Purpose == | |||
이 문서가 존재하는 이유 | |||
* Goal: NFS tips and tricks에 대한 기술 정보 제공 | |||
* Scope: NFS tips and tricks의 개념, 사용법, 설정 | |||
* Non-goals: 다른 주제로의 확장 | |||
== Key Concepts == | |||
{| class="wikitable" | |||
! Concept | |||
! Description | |||
! Related | |||
|- | |||
| NFS tips and tricks | |||
| HPC/서버 환경에서 중요한 기술 개념 | |||
| [[Linux]], [[Server]] | |||
|} | |||
== Detailed Explanation == | |||
NFS uses threads on the server to handle incoming and outgoing I/O requests. Using threads helps NFS scale to handle large numbers of clients and large numbers of I/O requests. | NFS uses threads on the server to handle incoming and outgoing I/O requests. Using threads helps NFS scale to handle large numbers of clients and large numbers of I/O requests. | ||
dmesg display when reach some high number of clients. should increase Number of NFS daemons (''nfsd'') by changing the RPCNFSDCOUNT variable in <code>/etc/default/nfs-kernel-server</code> on a Debian-based machine. (Ubuntu 20.04)<syntaxhighlight lang="bash"> | dmesg display when reach some high number of clients. should increase Number of NFS daemons (''nfsd'') by changing the RPCNFSDCOUNT variable in <code>/etc/default/nfs-kernel-server</code> on a Debian-based machine. (Ubuntu 20.04)<syntaxhighlight lang="bash"> | ||
Find the number of NFS daemons in two ways | Find the number of NFS daemons in two ways | ||
ps -aux | grep nfs | ps -aux | grep nfs | ||
or | |||
$ ps -aux | grep nfs | wc -l | |||
To change nfsd count temperarly, use | To change nfsd count temperarly, use | ||
# rpc.nfsd 16 | # rpc.nfsd 16 | ||
To change nfsd count permenently increase RPCNFSDCOUNT variable in /etc/default/nfs-kernel-server (Ubuntu 20.04) then restart nfs server. | |||
To change nfsd count permenently increase RPCNFSDCOUNT variable in /etc/default/nfs-kernel-server (Ubuntu 20.04) then restart nfs-server.service | $ cat /etc/default/nfs-kernel-server | ||
# Number of servers to start up | |||
RPCNFSDCOUNT=64 | |||
... | |||
$ sudo systemctl restart nfs-server.service | |||
$ ps -aux | grep nfs | wc -l | |||
65 | |||
</syntaxhighlight> | </syntaxhighlight> | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
$ nfsstat -r | $ nfsstat -r | ||
Server rpc stats: | Server rpc stats: | ||
== Best Practices == | |||
* 최신 버전 사용 권장 | |||
* 공식 문서 참고 | |||
* 테스트 환경에서 먼저 검증 | |||
== References == | == References == | ||
* [https://wiki.hpcmate.com NFS tips and tricks] | |||
== Related Pages == | |||
* [[Linux]] | |||
* [[Server]] | |||
* [[Hardware]] | |||
* [[Network]] | |||
[[Category:Network]] | |||
== Knowledge Graph == | |||
Related | |||
→ [[NFS]] | |||
→ [[Network]] | |||
→ [[NFSv4 ACLs]] | |||
→ [[Storage]] | |||
[[Category:Configuration]] | |||
Latest revision as of 11:29, 17 July 2026
Overview
NFS tips and tricks에 대한 기술 문서입니다.
Summary
- 무엇인가? - NFS tips and tricks
- 왜 필요한가? - HPC 및 서버 환경에서 필수 개념
- 언제 사용하는가? - 서버 구성, 성능 튜닝, 문제 해결 시
Purpose
이 문서가 존재하는 이유
- Goal: NFS tips and tricks에 대한 기술 정보 제공
- Scope: NFS tips and tricks의 개념, 사용법, 설정
- Non-goals: 다른 주제로의 확장
Key Concepts
| Concept | Description | Related |
|---|---|---|
| NFS tips and tricks | HPC/서버 환경에서 중요한 기술 개념 | Linux, Server |
Detailed Explanation
NFS uses threads on the server to handle incoming and outgoing I/O requests. Using threads helps NFS scale to handle large numbers of clients and large numbers of I/O requests.
dmesg display when reach some high number of clients. should increase Number of NFS daemons (nfsd) by changing the RPCNFSDCOUNT variable in /etc/default/nfs-kernel-server on a Debian-based machine. (Ubuntu 20.04)
Find the number of NFS daemons in two ways
ps -aux | grep nfs
or
$ ps -aux | grep nfs | wc -l
To change nfsd count temperarly, use
# rpc.nfsd 16
To change nfsd count permenently increase RPCNFSDCOUNT variable in /etc/default/nfs-kernel-server (Ubuntu 20.04) then restart nfs server.
$ cat /etc/default/nfs-kernel-server
# Number of servers to start up
RPCNFSDCOUNT=64
...
$ sudo systemctl restart nfs-server.service
$ ps -aux | grep nfs | wc -l
65
<syntaxhighlight lang="bash"> $ nfsstat -r Server rpc stats:
Best Practices
- 최신 버전 사용 권장
- 공식 문서 참고
- 테스트 환경에서 먼저 검증
References
Related Pages
Knowledge Graph
Related
→ NFS → Network → NFSv4 ACLs → Storage