The New World of NFS. Steve Dickson Consulting Software Engineer, Red Hat Tuesday, April 15
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1 The New World of NFS Steve Dickson Consulting Software Engineer, Red Hat Tuesday, April 15
2 The Path to RHEL 7 RHEL AS 2.1 UDP Default V2/V3 protocols RHEL 3 TCP Default V2/v3 RHEL 4 V2/V3/V4 (client) RHEL 5 V2/V3/V4 RHEL 6 V2/V3/V4/V4.1 Mar 2002 Oct 2003 Feb 2005 Mar 2007 Nov 2010
3 .0 Why RHEL 7? pnfs Client Support NFS 4.2 Labeled NFS NFS 4.1 Server Support Federated File System NFS v2 GSS-proxy
4 .0 Parallel NFS WHAT is it (in 6 word or less)?? NFS front end to a Cluster
5 Traditional NFS One Server for Multiple Clients = Limited Scalability Linux NFS Server Storage Mount/Meta Data Read/Writes NFS Client NFS Client NFS Client
6 Parallel NFS One Server for Multiple Clients that have direct access = Scalability pnfs Server Storage Mount/Meta Data Read/Writes pnfs Client pnfs Client pnfs Client
7 Parallel NFS Layouts Normal everyday Cluster pnfs Storage 1 Storage 2 Storage 3 Node 1 Node 2 Node 3 Meta Data Server File Layout open(2) Object Layout Block Layout pnfs Client 1 pnfs Client 2 pnfs Client 3
8 Parallel NFS File Layouts Storage 1 Storage 2 Storage 3 Meta Data Server Node 1 Node 2 Node 3 open(2) Data Server Data Server Data Server File Layout Netapp NAS pnfs Client 1 pnfs Client 2 pnfs Client 3
9 Parallel NFS Object/Block Layouts Node 1 Node 2 Node 3 Meta Data Server Storage 1 Storage 2 Storage 3 open(2) Block Layout Object Layout SAN High End Fabric pnfs Client 1 pnfs Client 2 pnfs Client 3
10 The Layouts supported in RHEL7 File Layout Object/Block Layouts Tech Preview Industry Leader
11 RHEL RC1 Kernel OracleR2 OLTP Netapp 8.2 RC1 Just over 250k Transactions per min w/ 100 users pnfs clients, 2 node cluster v4.1 R/W Delegations enabled Transactions per Minute NFSv3 NFSv4 pnfs Number of Users
12 NFS 4.1 Server Support Reliable only-once semantics Callback share client tcp connection using port 2049 No pnfs support :-(
13 NFS 4.2 Labeled NFS Selinux context supported Usages: Secure virtual machine on NFS servers Limited access to Home dirs Industry Leader Security in RHEL 7 beta by Dan Walsh Today at 4:50 pm
14 .0 Federated File System What is FedFS??? A way to manage NFS Namespace What is a NFS Namespace??? A group of NFS v4 referrals What is an NFS v4 referral??? Let me show you
15 NFS V4 Referrals mount NFS V4 Client lookup referral NFS v4 referral Server mount NFS V4 Server
16 FedFS Clients & Servers Clients Autofs used to manage mounts cd /nfs4/redhat.com/home autofs /etc/auto.master /etc/auto.fedfs Domain Servers DNS or LDAP Is how server is found Junctions determine where the mount goes DNS SRV _nfs-domainroot._tcp SRV batman.nfsv4bat.org
17 cd /nfs4/redhat.com/home NFS V4 Client cd /nfs4 (autofs) Lookup redhat.com Junction /home Root Domain Server mount/lookup /home NFS V4 /home Server
18 FedFS Namespaces rdu.redhat.com bos.redhat.com /home /data /home /data cd /nfs4/rdu.redhat.com/home cd /nfs4/bos.redhat.com/data
19 Managing FedFS Namespaces rdu.redhat.com bos.redhat.com /home /data /home /data rdu.redhat.com Root Domain Server bos.redhat.com Client Client Client Client Client Client...
20 Secure NFS Two Major Pains Setup Ticket Renewal FreeIPA GSS-proxy
21 Defining IPA Identity + Policy + Audit = IPA
22 Parts of IPA Server Client ipa-server-install ipa-client-install
23 GSS-Proxy Keytabs for everybody!! Which Means: kinit is no longer needed Which Also Means: Long running jobs Solved!!
24 How GSS-Proxy Works cat /nfs/foobar RPCGSSD User Keytab NFS Client
25 Home Page: Mailing List: Upstream Bugs: Red Hat Bugs:
26 All Summit Slides:
27 Visit the all new social page to see all THE 2013 RED HAT SUMMIT BUZZ redhat.com/summit/social TWEET ABOUT IT #RHSUMMIT & #REDHAT FIND RED HAT
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