Re: Why portmap is needed for NFSv4 in CentOS6

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On Wed, Oct 24, 2012 at 10:25 AM, C. L. Martinez <carlopmart@xxxxxxxxx> wrote:
> Hi all,
>
>  I have setup a CentOS6.3 x86_64 host to act as a nfs server.
> According to RHEL6 docs, portmap is not needed when you use NFSv4, but
> in my host I need to start rpcbind service to make NFSv4 works.
>
>  My /etc/sysconfig/nfs
>
> #
> # Define which protocol versions mountd
> # will advertise. The values are "no" or "yes"
> # with yes being the default
> MOUNTD_NFS_V2="no"
> MOUNTD_NFS_V3="no"
> #
> #
> # Path to remote quota server. See rquotad(8)
> #RQUOTAD="/usr/sbin/rpc.rquotad"
> # Port rquotad should listen on.
> #RQUOTAD_PORT=875
> # Optinal options passed to rquotad
> #RPCRQUOTADOPTS=""
> #
> #
> # Optional arguments passed to in-kernel lockd
> #LOCKDARG=
> # TCP port rpc.lockd should listen on.
> #LOCKD_TCPPORT=32803
> # UDP port rpc.lockd should listen on.
> #LOCKD_UDPPORT=32769
> #
> #
> # Optional arguments passed to rpc.nfsd. See rpc.nfsd(8)
> # Turn off v2 and v3 protocol support
> RPCNFSDARGS="-N 2 -N 3"
> # Turn off v4 protocol support
> #RPCNFSDARGS="-N 4"
> # Number of nfs server processes to be started.
> # The default is 8.
> #RPCNFSDCOUNT=8
> # Stop the nfsd module from being pre-loaded
> #NFSD_MODULE="noload"
> # Set V4 grace period in seconds
> #NFSD_V4_GRACE=90
> #
> #
> #
> # Optional arguments passed to rpc.mountd. See rpc.mountd(8)
> #RPCMOUNTDOPTS=""
> # Port rpc.mountd should listen on.
> #MOUNTD_PORT=892
> #
> #
> # Optional arguments passed to rpc.statd. See rpc.statd(8)
> #STATDARG=""
> # Port rpc.statd should listen on.
> #STATD_PORT=662
> # Outgoing port statd should used. The default is port
> # is random
> #STATD_OUTGOING_PORT=2020
> # Specify callout program
> #STATD_HA_CALLOUT="/usr/local/bin/foo"
> #
> #
> # Optional arguments passed to rpc.idmapd. See rpc.idmapd(8)
> #RPCIDMAPDARGS=""
> #
> # Set to turn on Secure NFS mounts.
> #SECURE_NFS="yes"
> # Optional arguments passed to rpc.gssd. See rpc.gssd(8)
> #RPCGSSDARGS=""
> # Optional arguments passed to rpc.svcgssd. See rpc.svcgssd(8)
> #RPCSVCGSSDARGS=""
> #
> # To enable RDMA support on the server by setting this to
> # the port the server should listen on
> #RDMA_PORT=20049
>
> And 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
>     100003    4   tcp   2049  nfs
>     100003    4   udp   2049  nfs
>     100021    1   udp  55700  nlockmgr
>     100021    3   udp  55700  nlockmgr
>     100021    4   udp  55700  nlockmgr
>     100021    1   tcp  52795  nlockmgr
>     100021    3   tcp  52795  nlockmgr
>     100021    4   tcp  52795  nlockmgr

Please, any idea??
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