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    NIS and NFS and YP in Ubuntu Server 14.04

    IT Discussion
    linux ubuntu nis nfs unix
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    • LakshmanaL
      Lakshmana
      last edited by

      sysv-rc-conf ypbind on

      Line does not exists in my server.Why?

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      • LakshmanaL
        Lakshmana
        last edited by

        now installed the above thing but the error i face after installation is given below

        shiva@ubuntu:~$ sysv-rc-conf ypbind on
        Can't create /var/lib/sysv-rc-conf : Permission denied at /usr/sbin/sysv-rc-conf line 454.

        scottalanmillerS 1 Reply Last reply Reply Quote 0
        • LakshmanaL
          Lakshmana
          last edited by Lakshmana

          I have followed the website given below but no use in configuration

          http://www.server-world.info/en/note?os=Ubuntu_13.04&p=nis&f=2

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          • scottalanmillerS
            scottalanmiller @Lakshmana
            last edited by

            @Lakshmana said:

            now installed the above thing but the error i face after installation is given below

            shiva@ubuntu:~$ sysv-rc-conf ypbind on
            Can't create /var/lib/sysv-rc-conf : Permission denied at /usr/sbin/sysv-rc-conf line 454.

            You forgot the "sudo" before that line.

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            • LakshmanaL
              Lakshmana
              last edited by

              NOw NFS configured and tested but there is an issue in the NIS configuration only and the NIS server has issue given below

              root@ubuntu:/var/yp# service ypbind start
              start: Job failed to start

              NIS client has issue as given below

              root@client:~# ypdomainname
              test
              root@client:~# ypcat passwd
              No such map passwd.byname. Reason: Can't bind to server which serves this domain
              root@client:~# ypcat hosts
              No such map hosts.byname. Reason: Can't bind to server which serves this domain

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              • scottalanmillerS
                scottalanmiller
                last edited by

                There is no need to test NIS functions if the NIS server hasn't started yet. If the service can't start, you know that it isn't going to work. This is like telling us that the car isn't steering well right after demonstrating that it hasn't started yet.

                So we must start by figuring out why it isn't starting and fix that. When something doesn't work, since it throws no useful error messages, we need to start by looking at the logs to see what it is telling us.

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                • LakshmanaL
                  Lakshmana
                  last edited by scottalanmiller

                  My NIS Client Configuration Step by step process is given below if any error please inform

                  nano /etc/yp.conf
                  
                    GNU nano 2.2.6             File: /etc/yp.conf                       Modified  
                  
                  #
                  # yp.conf       Configuration file for the ypbind process. You can define
                  #               NIS servers manually here if they can't be found by
                  #               broadcasting on the local net (which is the default).
                  #
                  #               See the manual page of ypbind for the syntax of this file.
                  #
                  # IMPORTANT:    For the "ypserver", use IP addresses, or make sure that
                  #               the host is in /etc/hosts. This file is only interpreted
                  #               once, and if DNS isn't reachable yet the ypserver cannot
                  #               be resolved and ypbind won't ever bind to the server.
                  
                  # ypserver ypserver.network.com
                  domain test.com server shiva.test.com
                  
                  root@ubuntu:~# nano /etc/nsswitch.conf 
                  
                  # /etc/nsswitch.conf
                  #
                  # Example configuration of GNU Name Service Switch functionality.
                  # If you have the `glibc-doc-reference' and `info' packages installed, try:
                  # `info libc "Name Service Switch"' for information about this file.
                  
                  passwd:         compat nis
                  group:            compat nis
                  shadow:         compat nis
                  
                  hosts:          files mdns4_minimal [NOTFOUND=return] dns nis
                  networks:       files
                  
                  protocols:       db files
                  services:        db files
                  ethers:            db files
                  rpc:                 db files
                  
                  root@ubuntu:~# nano /etc/pam.d/common-session
                  
                    GNU nano 2.2.6         File: /etc/pam.d/common-session                        
                  
                  # since the modules above will each just jump around
                  session required                        pam_permit.so
                  # The pam_umask module will set the umask according to the system default in
                  # /etc/login.defs and user settings, solving the problem of different
                  # umask settings with different shells, display managers, remote sessions etc.
                  # See "man pam_umask".
                  session optional                        pam_umask.so
                  # and here are more per-package modules (the "Additional" block)
                  session required        pam_unix.so
                  session optional        pam_systemd.so
                  # end of pam-auth-update config
                  session optional        pam_mkhomedir.so skel=/etc/skel umask=077
                  
                  root@ubuntu:~# reboot
                  
                  oot@ubuntu:~# ypwhich
                  ypwhich: Can't communicate with ypbind
                  root@ubuntu:~# ypcat passwd
                  No such map passwd.byname. Reason: Can't bind to server which serves this domain
                  root@ubuntu:~# ypcat hosts
                  No such map hosts.byname. Reason: Can't bind to server which serves this domain
                  root@ubuntu:~#
                  
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                  • LakshmanaL
                    Lakshmana
                    last edited by scottalanmiller

                    Client side output for digging domain name

                    shiva@ubuntu:~$ dig test.com any
                    
                    ; <<>> DiG 9.9.5-3ubuntu0.1-Ubuntu <<>> test.com any
                    ;; global options: +cmd
                    ;; Got answer:
                    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16217
                    ;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 2, ADDITIONAL: 3
                    
                    ;; OPT PSEUDOSECTION:
                    ; EDNS: version: 0, flags:; udp: 4096
                    ;; QUESTION SECTION:
                    ;test.com.			IN	ANY
                    
                    ;; ANSWER SECTION:
                    test.com.		7200	IN	SOA	ns65.worldnic.com. namehost.worldnic.com. 115070707 10800 3600 604800 3600
                    test.com.		7200	IN	TXT	"google-site-verification=kW9t2V_S7WjOX57zq0tP8Ae_WJhRwUcZoqpdEkvuXJk"
                    test.com.		7200	IN	MX	10 mx.spamexperts.com.
                    test.com.		7200	IN	MX	20 fallbackmx.spamexperts.eu.
                    test.com.		7200	IN	MX	30 lastmx.spamexperts.net.
                    test.com.		3600	IN	A	69.172.200.235
                    test.com.		7200	IN	NS	ns66.worldnic.com.
                    test.com.		7200	IN	NS	ns65.worldnic.com.
                    
                    ;; AUTHORITY SECTION:
                    test.com.		7200	IN	NS	ns66.worldnic.com.
                    test.com.		7200	IN	NS	ns65.worldnic.com.
                    
                    ;; ADDITIONAL SECTION:
                    ns65.worldnic.com.	171249	IN	A	207.204.40.133
                    ns66.worldnic.com.	171249	IN	A	207.204.21.133
                    
                    ;; Query time: 841 msec
                    ;; SERVER: 127.0.0.1#53(127.0.0.1)
                    ;; WHEN: Thu Jul 16 18:50:33 IST 2015
                    ;; MSG SIZE  rcvd: 396
                    
                    shiva@ubuntu:~$
                    
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                    • scottalanmillerS
                      scottalanmiller
                      last edited by

                      I edited your posts for readability.

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                      • scottalanmillerS
                        scottalanmiller
                        last edited by

                        You are getting way too deep when your errors are very shallow. Right now it looks like NIS isn't running yet:

                        oot@ubuntu:~# ypwhich
                        ypwhich: Can't communicate with ypbind
                        root@ubuntu:~# ypcat passwd
                        No such map passwd.byname. Reason: Can't bind to server which serves this domain
                        

                        Before you are doing all of this.... just look and see if NIS is running. Just this command on your NIS server:

                        netstat -tulpn
                        
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                        • Reid CooperR
                          Reid Cooper
                          last edited by

                          Or query the NIS service and ask it if it is running.

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                          • Reid CooperR
                            Reid Cooper
                            last edited by

                            Have firewall ports been opened for RPCBIND and whatever else is needed?

                            1 Reply Last reply Reply Quote 1
                            • LakshmanaL
                              Lakshmana
                              last edited by Lakshmana

                              How to open ports for the NIS and NFS in iptables?
                              I have followed the below to link configure for the NIS configurattion now.

                              https://help.ubuntu.com/community/SettingUpNISHowTo

                              But I was not able to open the ports I have given in the website

                              I have also installed the iptables-persistent in the ubuntu server but the default path to edit rules was not able to identify.

                              When I use the rules for the port I have opened means the error coming here is
                              Bad Argument"IP"

                              scottalanmillerS 2 Replies Last reply Reply Quote 0
                              • scottalanmillerS
                                scottalanmiller @Lakshmana
                                last edited by

                                @Lakshmana said:

                                How to open ports for the NIS and NFS in iptables?

                                Same way as the other times you opened ports in iptables. Just change the port numbers. For now, while you are trying to figure things out, just turn iptables off.

                                1 Reply Last reply Reply Quote 1
                                • scottalanmillerS
                                  scottalanmiller @Lakshmana
                                  last edited by

                                  @Lakshmana said:

                                  When I use the rules for the port I have opened means the error coming here is
                                  Bad Argument"IP"

                                  Instead of describing the issue in cases like this, supply the screen shot or a copy/paste of the commands that fail and the error. In almost all cases it's just a typo or missed argument. In every case we will ask you to do this. So instead of making us ask, just start by providing the information so we can assist more quickly.

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                                  • LakshmanaL
                                    Lakshmana
                                    last edited by

                                    Configured Properly and now it is working

                                    1 Reply Last reply Reply Quote 0
                                    • Reid CooperR
                                      Reid Cooper
                                      last edited by

                                      What was wrong?

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                                      • LakshmanaL
                                        Lakshmana
                                        last edited by

                                        I have not mentioned the server at /etc/hosts and ypbind does not happen because of this option the whole setup has issue.

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                                        • Reid CooperR
                                          Reid Cooper
                                          last edited by

                                          I am guessing that you do not have all of your servers listed in DNS and that might be causing the problem requiring /etc/hosts to have an entry?

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                                          • Reid CooperR
                                            Reid Cooper
                                            last edited by

                                            You can use IP addresses in your configuration files too, instead of hostnames if you are lacking DNS.

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