Sage-Tips

Is rpcbind needed?

1 Answer. IOW – The rpcbind service is needed by nfs clients that use v2 and v3, as it required for file locking, and can be disabled for nfs v4 clients, as locking is a part of the NFSv4. 0 protocol.

What is RPC service in Linux?

Remote Procedure Call (RPC) is a protocol that programs can use to request services from other programs located on different computers. The portmap service controls RPC services by mapping RPC program numbers into DARPA protocol port numbers; it must be running in order to make RPC calls.

How do I start rpcbind service in Linux?

Just complete a warm start by following these steps.

1. Become superuser or assume an equivalent role. Roles contain authorizations and privileged commands.
2. Determine the PID for rpcbind . Run ps to get the PID, which is the value in the second column.
3. Send a SIGTERM signal to the rpcbind process.
4. Restart rpcbind .

What is Statd service?

statd A daemon that listens for reboot notifications from other hosts, and manages the list of hosts to be notified when the local system reboots sm-notify A helper program that notifies NFS peers after the local system reboots The local NFS lock manager alerts its local rpc.

Can we disable rpcbind?

do you need anything which depends on rpcbind? But you can safely switch it off, that will not cause any danger. Probably something will not work, probably everything will work, but there is no danger.

What is the purpose of portmapper?

A port mapper is the protocol that maps the number or version of an Open Network Computing Remote Procedure Call (ONC RPC) program to a port used for networking by that version of the program.

What is rpcbind protocol?

rpcbind maps RPC program and version numbers to universal addresses, thus making dynamic binding of remote programs possible. rpcbind is bound to a well-known address of each supported transport, and other programs register their dynamically allocated transport addresses with it.

How do I know if RPC is running on Linux?

Show all RPC services registered with rpcbind on the machine named cpuhope. Show whether the RPC service with program number prognum and version versnum is registered on the machine named cpuhope for the transport tcp. Show all RPC services registered with version 2 of the rpcbind protocol on the local machine.

What ports does rpcbind use?

When a client signs up for a given interface on a particular host, usually with a clnt_create() call, the stub code asks rpcbind on that host a question, something like “on what UDP or TCP port is protocol number X listening?” rpcbind , unlike most other ONC services, listens on TCP and UDP port 111, so given a host …

What does RPC Statd do?

statd records information about each monitored NFS peer on persistent storage. An NFS server can use this hostname to send asynchronous GRANT calls to a client, or to notify the client it has rebooted. The Linux NFS server can provide the client’s caller_name or the client’s network address to rpc.

What Rpcbind 111?

“Portmapper is an RPC service, which always listens on tcp and udp 111, and is used to map other RPC services (such as nfs, nlockmgr, quotad, mountd, etc.) to their corresponding port number on the server. …

How do I disable portmapper in Linux?

Linux OS service ‘portmap’

1. Service Name.
2. Service Control.
3. # chkconfig –list portmap portmap 0:off 1:off 2:on 3:on 4:on 5:on 6:off.
4. # service portmap Usage: /etc/init.d/portmap {start|stop|status|restart|reload|condrestart}
5. # service portmap start Starting portmap: [ OK ]
6. # service portmap stop Stopping portmap: [ OK ]