LINUX- 34 CONFIGURING SAMBA (RHEL-7)-P1

                LINUX- 34 CONFIGURING SAMBA (RHEL-7)-P1

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CONFIGURING SAMBA (RHEL-7)-P1
CONFIGURING SAMBA (RHEL-7)-P2


What is SAMBA and how to configure it in RHEL7.

Samba is an open-source Linux implementation of the Server Message Block (SMB) and Common Internet File System (CIFS) protocols which uses TCP/IP protocol and It allows us to share files, folders, and printers between Linux server and Windows clients.

In Linux SAMBA provides the following services:

User Authentication and authorization

File and printer sharing

Name resolution

Browsing

Packages Required: samba*

Port Number:

137 tcp & udp

138 tcp & udp

139 tcp & udp

445 tcp & udp

Daemon:

1) smbd: It provides the file and printer sharing services along with authentication.

2) nmbd: The nmbd daemons provides NetBIOS (Network Basic Input/output system) name serving and browsing support. 

   A daemon that looks after the Windows Internet Name-Service (WINS) and assist with browsing. According to samba documentation, it should be the first daemon to start.

3) winbindd: for host and user name resolution / to handle Microsoft Windows Domain membership.

Config File Location: /etc/samba/smb.conf

INSTALLING SAMBA,

[root@rhel7-server ~]# rpm -qa |grep samba

[root@rhel7-server ~]# yum install samba* -y

[root@rhel7-server ~]# rpm -qa |grep samba

samba-4.1.1-31.el7.x86_64

samba-winbind-modules-4.1.1-31.el7.x86_64

samba-libs-4.1.1-31.el7.x86_64

samba-client-4.1.1-31.el7.x86_64

samba-python-4.1.1-31.el7.x86_64

samba-common-4.1.1-31.el7.x86_64

samba-winbind-4.1.1-31.el7.x86_64

[root@rhel7-server ~]# systemctl status smb

smb.service - Samba SMB Daemon

   Loaded: loaded (/usr/lib/systemd/system/smb.service; disabled)

   Active: inactive (dead)

Aug 04 18:02:18 rhel7-server systemd[1]: Stopped Samba SMB Daemon.

[root@rhel7-server ~]# systemctl status nmb

nmb.service - Samba NMB Daemon

   Loaded: loaded (/usr/lib/systemd/system/nmb.service; disabled)

   Active: inactive (dead)

Aug 04 18:02:18 rhel7-server systemd[1]: Stopped Samba NMB Daemon.

Activating Samba services at boot,

[root@rhel7-server ~]# systemctl enable smb

ln -s '/usr/lib/systemd/system/smb.service' '/etc/systemd/system/multi-user.target.wants/smb.service'

[root@rhel7-server ~]# systemctl enable nmb

ln -s '/usr/lib/systemd/system/nmb.service' '/etc/systemd/system/multi-user.target.wants/nmb.service'

Starting Samba services,

[root@rhel7-server ~]# systemctl start smb

[root@rhel7-server ~]# systemctl start nmb

CONFIGURATION:

* Create a dir for sharing

* Add a new user for samba (we can use existing as well)

* Add a new group for samba (we can use existing as well)

* Change ownership of dir and add user to group

* Copy the smb file and configure with above details

* Validate the configuration

* Set the samba password for created user

* Test the configuration

[root@rhel7-server ~]# mkdir /samba-share-test

[root@rhel7-server ~]# chmod 777 /samba-share-test

[root@rhel7-server ~]# groupadd sambagr

[root@rhel7-server ~]# useradd -s /sbin/nologin -G sambagr sambatest

[root@rhel7-server ~]# chgrp sambagr /samba-share-test

[root@rhel7-server ~]# chown sambatest:sambagr /samba-share-test

[root@rhel7-server ~]# cp /etc/samba/smb.conf /etc/samba/smb.conf.org

[root@rhel7-server ~]# vi /etc/samba/smb.conf

[sambashare]

comment = Samba-shared-directory

path = /samba-share-test

public = no

valid users = sambatest, @sambagr

writable = yes

browseable = yes

create mask = 0755

guest ok = no

write list = @sambagr

read list = sambatest

[root@rhel7-server ~]# testparm

Load smb config files from /etc/samba/smb.conf

rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)

Processing section "[homes]"

Processing section "[printers]"

Processing section "[sambashare]"

Loaded services file OK.

Server role: ROLE_STANDALONE

Press enter to see a dump of your service definitions

[root@rhel7-server ~]# smbpasswd -a sambatest

New SMB password:

Retype new SMB password:

Added user sambatest.

**If using existing user for samba then password must be same as in /etc/password.

[root@rhel7-server ~]# systemctl restart smb

[root@rhel7-server ~]# systemctl restart nmb

# smbclient //localhost/samba-share-test -U sambatest%redhat

Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

tree connect failed: NT_STATUS_BAD_NETWORK_NAME

If we are getting above error means either we have to check for shared dir permission or need to look in to samba configuration under smb.conf

[root@rhel7-server ~]# ls -ld /samba-share-test

drwxrwxrwx. 2 sambatest sambagr 6 Aug  5 12:51 /samba-share-test

Its already highest permission set on shared dir

[root@rhel7-server ~]# vi /etc/samba/smb.conf

[sambashare]  çç This is Culprit

comment = Samba-shared-directory

path = /samba-share-test

public = no

valid users = sambatest, @sambagr

writable = yes

browseable = yes

create mask = 0755

guest ok = no

write list = @sambagr

read list = sambatest

[samba-share-test]  çç Changed it like this

comment = Samba-shared-directory

path = /samba-share-test

public = no

valid users = sambatest, @sambagr

writable = yes

browseable = yes

create mask = 0755

guest ok = no

write list = @sambagr

read list = sambatest

wq!

[root@rhel7-server ~]# systemctl restart smb

[root@rhel7-server ~]# systemctl restart nmb

Let’s try it again,

# smbclient //localhost/samba-share-test -U sambatest

Enter sambatest's password:

Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

smb: \> ls

NT_STATUS_ACCESS_DENIED listing \*

smb: \>

It’s not allowing to access the dir. Let’s check from windows side

I tried with all three active IP’s, and see the result.

What could be the reason…?