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|
.. -*- mode: rst -*-
.. _quickstart-centos:
=====================
Quickstart for CentOS
=====================
This is a complete getting started guide for CentOS. With this document you should be able to install a Bcfg2 server, a Bcfg2 client, and change the `/etc/motd` file on the client.
Install Bcfg2
=============
You can install Bcfg2 from source or build your own RPM. See :ref:`using_bcfg2-with-centos` for information about building Bcfg2 from source and making your own packages.
Using prebuilt rpm packages
###########################
* Install the bcfg2-server and bcfg2 RPMs ::
[root@centos ~]# rpm -Uvh ftp://fr.rpmfind.net/linux/EPEL/5Server/x86_64/bcfg2-server-0.9.6-1.el5.noarch.rpm ftp://fr.rpmfind.net/linux/EPEL/5Server/x86_64/bcfg2-0.9.6-1.el5.noarch.rpm
Retrieving ftp://fr.rpmfind.net/linux/EPEL/5Server/x86_64/bcfg2-server-0.9.6-1.el5.noarch.rpm
Retrieving ftp://fr.rpmfind.net/linux/EPEL/5Server/x86_64/bcfg2-0.9.6-1.el5.noarch.rpm
warning: /var/tmp/rpm-xfer.xHWepA: Header V3 DSA signature: NOKEY, key ID 217521f6
Preparing... ########################################### [100%]
1:bcfg2 ########################################### [ 50%]
2:bcfg2-server ########################################### [100%]
Initialize your repository
##########################
Now that you're done with the install, you need to intialize your
repository and setup your bcfg2.conf. bcfg2-admin init is a tool which
allows you to automate this::
[root@centos ~]# bcfg2-admin init
Store bcfg2 configuration in [/etc/bcfg2.conf]:
Location of bcfg2 repository [/var/lib/bcfg2]:
Input password used for communication verification (without echoing; leave blank for a random):
Input the server location [https://localhost.localdomain:6789]: https://centos:6789
Input base Operating System for clients:
1: Redhat/Fedora/RHEL/RHAS/Centos
2: SUSE/SLES
3: Mandrake
4: Debian
5: Ubuntu
6: Gentoo
7: FreeBSD
: 1
Generating a 1024 bit RSA private key
........++++++
.....................................++++++
writing new private key to '/etc/bcfg2.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [GB]:
State or Province Name (full name) [Berkshire]:
Locality Name (eg, city) [Newbury]:
Organization Name (eg, company) [My Company Ltd]:
Organizational Unit Name (eg, section) []:
Common Name (eg, your name or your server's hostname) []:
Email Address []:
Repository created successfuly in /var/lib/bcfg2
Change responses as necessary
Start the server
################
You are now ready to start your bcfg2 server for the first time::
[root@centos ~]# /etc/init.d/bcfg2-server start
Starting Configuration Management Server: bcfg2-server [ OK ]
[root@centos ~]# tail /var/log/messages
Mar 3 12:42:26 centos bcfg2-server[24818]: Failed to read file probed.xml
Mar 3 12:42:26 centos bcfg2-server[24818]: Creating new statistics file /var/lib/bcfg2/etc/statistics.xml
Mar 3 12:42:26 centos bcfg2-server[24818]: Processed 16 gamin events in 0.103 seconds. 0 collapsed
Mar 3 12:42:41 centos bcfg2-server[24818]: Bound to port 6789
Run bcfg2 to be sure you are able to communicate with the server::
[root@centos ~]# bcfg2 -vqn
No ca is specified. Cannot authenticate the server with SSL.
Loaded tool drivers:
Action Chkconfig FreeBSDInit POSIX YUMng
Extra Package flac 1.1.2-28.el5_0.1.x86_64.
Extra Package iputils 20020927-43.el5.x86_64.
Extra Package xorg-x11-fonts-base 7.1-2.1.el5.noarch.
....
Extra Package nash 5.1.19.6-28.x86_64.
Extra Package audiofile 1:0.2.6-5.i386.
Extra Package audiofile 1:0.2.6-5.x86_64.
Phase: initial
Correct entries: 0
Incorrect entries: 0
Total managed entries: 0
Unmanaged entries: 774
Phase: final
Correct entries: 0
Incorrect entries: 0
Total managed entries: 0
Unmanaged entries: 774
The ca message is just a warning, meaning that the client does not
have sufficient information to verify that it is talking to the
correct server. This can be fixed by distributing the ca certificate
from the server to all clients. By default, this file is available in
/etc/bcfg2.crt on the server. Copy this file to the client (with a
bundle) and add the ca option to bcfg2.conf pointing at the file, and
the client will be able to verify it is talking to the correct server
upon connection::
[root@centos-client ~]# cat /etc/bcfg2.conf
[communication]
protocol = xmlrpc/ssl
password = N41lMNeW
ca = /etc/bcfg2.crt
[components]
bcfg2 = https://centos:6789
Now if you run the client, no more warning::
[root@centos ~]# bcfg2 -vqn
Loaded tool drivers:
Action Chkconfig FreeBSDInit POSIX YUMng
Extra Package flac 1.1.2-28.el5_0.1.x86_64.
Extra Package iputils 20020927-43.el5.x86_64.
Extra Package xorg-x11-fonts-base 7.1-2.1.el5.noarch.
....
Extra Package nash 5.1.19.6-28.x86_64.
Extra Package audiofile 1:0.2.6-5.i386.
Extra Package audiofile 1:0.2.6-5.x86_64.
Phase: initial
Correct entries: 0
Incorrect entries: 0
Total managed entries: 0
Unmanaged entries: 774
Phase: final
Correct entries: 0
Incorrect entries: 0
Total managed entries: 0
Unmanaged entries: 774
Bring your first machine under Bcfg2 control
--------------------------------------------
Now it is time to get your first machine's configuration into your
Bcfg2 repository. Let's start with the server itself.
Quick and Easy
++++++++++++++
First, create a base file containing all installed packages::
[root@centos ~]# cat create-base.sh
echo "<Base><Group name=\"centos5\">" > /tmp/centos5.xml
rpm -qa --qf "<Package name=\'%{NAME}:%{ARCH}\'/>\n" | sort | uniq >> /tmp/centos5.xml
echo "</Group></Base>" >> /tmp/centos5.xml
[root@centos ~]# sh create-base.sh
[root@centos ~]# cp /tmp/centos5.xml /var/lib/bcfg2/Base/centos5.xml
Add a new group centos5 and centos groups to groups.xml::
[root@centos ~]# cat /var/lib/bcfg2/Metadata/groups.xml
<Groups version='3.0'>
<Group profile='true' public='true' default='true' name='basic'>
<Group name='centos5'/>
</Group>
<Group name='centos5'>
<Group name='centos'/>
</Group>
<Group name='centos'/>
<Group name='ubuntu'/>
<Group name='debian'/>
<Group name='freebsd'/>
<Group name='gentoo'/>
<Group name='redhat'/>
<Group name='suse'/>
<Group name='mandrake'/>
<Group name='solaris'/>
</Groups>
As you can see, the centos5 group inherits the centos group. Now let's
get a Pkgmgr listing based on the installed package versions
Generate Pkgmgr listing
#######################
::
[root@centos ~]# cat create-pkgmgr.sh
echo "<PackageList priority=\"0\" type=\"yum\"><Group name=\"centos5\">" > /tmp/pkgmgr-centos5.xml
rpm -qa --qf "<Package name=\'%{NAME}\' version=\'%{VERSION}-%{RELEASE}\'/>\n" | sort | uniq >> /tmp/pkgmgr-centos5.xml
echo "</Group></PackageList>" >> /tmp/pkgmgr-centos5.xml
[root@centos ~]# sh create-pkgmgr.sh
[root@centos ~]# cp /tmp/pkgmgr-centos5.xml /var/lib/bcfg2/Pkgmgr/pkgmgr-centos5.xml
.. note::
This how to is being done on 64 bit CentOS.
Now when we run bcfg2, we see Correct entries::
[root@centos ~]# bcfg2 -vqn
Loaded tool drivers:
Action Chkconfig FreeBSDInit POSIX YUMng
...
Package xml-common failed verification.
Package xulrunner failed verification.
Package xulrunner failed verification.
Phase: initial
Correct entries: 716
Incorrect entries: 176
Total managed entries: 892
Unmanaged entries: 43
In dryrun mode: suppressing entry installation for:
Package:GConf2 Package:evolution Package:gpg-pubkey Package:libgnomecups Package:libxml2 Package:pam_smb
Package:GConf2 Package:evolution Package:gpm Package:libgnomeprint22 Package:libxml2 Package:pango
Package:ImageMagick Package:evolution-data-server Package:gpm Package:libgnomeprint22 Package:mkinitrd Package:pango
Package:ImageMagick Package:evolution-data-server Package:gtk2 Package:libgnomeprintui22 Package:mkinitrd Package:parted
Package:alsa-lib Package:expat Package:gtk2 Package:libgnomeprintui22 Package:nautilus-cd-burner Package:parted
Package:alsa-lib Package:expat Package:gtkhtml3 Package:libgnomeui Package:nautilus-cd-burner Package:pilot-link
Package:aspell Package:fontconfig Package:gtkhtml3 Package:libgnomeui Package:nautilus-sendto Package:pilot-link
Package:aspell Package:fontconfig Package:hal Package:libgpg-error Package:ncurses Package:popt
Package:at-spi Package:gail Package:hal Package:libgpg-error Package:ncurses Package:popt
Package:at-spi Package:gail Package:initscripts Package:libgsf Package:nspluginwrapper Package:readline
Package:atk Package:ghostscript Package:iptables Package:libgsf Package:nspluginwrapper Package:readline
Package:atk Package:ghostscript Package:kernel Package:libgtop2 Package:nss_db Package:sane-backends
Package:audit Package:glib2 Package:krb5-libs Package:libgtop2 Package:nss_db Package:sendmail
Package:avahi Package:glib2 Package:krb5-libs Package:libjpeg Package:nss_ldap Package:setup
Package:avahi Package:gnome-desktop Package:lcms Package:libjpeg Package:nss_ldap Package:shadow-utils
Package:cracklib Package:gnome-desktop Package:lcms Package:libpng Package:numactl Package:sound-juicer
Package:cracklib Package:gnome-keyring Package:libX11 Package:libpng Package:numactl Package:system-config-securitylevel
Package:cryptsetup-luks Package:gnome-keyring Package:libX11 Package:librsvg2 Package:openldap Package:tcp_wrappers
Package:cryptsetup-luks Package:gnome-menus Package:libbonobo Package:librsvg2 Package:openldap Package:tcp_wrappers
Package:cups Package:gnome-menus Package:libbonobo Package:libselinux Package:openssl Package:totem
Package:dbus Package:gnome-panel Package:libbonoboui Package:libselinux Package:openssl Package:totem
Package:dbus Package:gnome-panel Package:libbonoboui Package:libtiff Package:pam Package:wireless-tools
Package:device-mapper Package:gnome-pilot Package:libgcj Package:libtiff Package:pam Package:wireless-tools
Package:device-mapper Package:gnome-pilot Package:libglade2 Package:libuser Package:pam_krb5 Package:xml-common
Package:ecryptfs-utils Package:gnome-utils Package:libglade2 Package:libwmf Package:pam_krb5 Package:xulrunner
Package:ecryptfs-utils Package:gnome-utils Package:libgnome Package:libwmf Package:pam_passwdqc Package:xulrunner
Package:eel2 Package:gnome-vfs2 Package:libgnome Package:libwnck Package:pam_passwdqc
Package:eel2 Package:gnome-vfs2 Package:libgnomecanvas Package:libwnck Package:pam_pkcs11
Package:esound Package:gnutls Package:libgnomecanvas Package:libxklavier Package:pam_pkcs11
Package:esound Package:gnutls Package:libgnomecups Package:libxklavier Package:pam_smb
Phase: final
Correct entries: 716
Incorrect entries: 176
Package:GConf2 Package:evolution Package:gpg-pubkey Package:libgnomecups Package:libxml2 Package:pam_smb
Package:GConf2 Package:evolution Package:gpm Package:libgnomeprint22 Package:libxml2 Package:pango
Package:ImageMagick Package:evolution-data-server Package:gpm Package:libgnomeprint22 Package:mkinitrd Package:pango
Package:ImageMagick Package:evolution-data-server Package:gtk2 Package:libgnomeprintui22 Package:mkinitrd Package:parted
Package:alsa-lib Package:expat Package:gtk2 Package:libgnomeprintui22 Package:nautilus-cd-burner Package:parted
Package:alsa-lib Package:expat Package:gtkhtml3 Package:libgnomeui Package:nautilus-cd-burner Package:pilot-link
Package:aspell Package:fontconfig Package:gtkhtml3 Package:libgnomeui Package:nautilus-sendto Package:pilot-link
Package:aspell Package:fontconfig Package:hal Package:libgpg-error Package:ncurses Package:popt
Package:at-spi Package:gail Package:hal Package:libgpg-error Package:ncurses Package:popt
Package:at-spi Package:gail Package:initscripts Package:libgsf Package:nspluginwrapper Package:readline
Package:atk Package:ghostscript Package:iptables Package:libgsf Package:nspluginwrapper Package:readline
Package:atk Package:ghostscript Package:kernel Package:libgtop2 Package:nss_db Package:sane-backends
Package:audit Package:glib2 Package:krb5-libs Package:libgtop2 Package:nss_db Package:sendmail
Package:avahi Package:glib2 Package:krb5-libs Package:libjpeg Package:nss_ldap Package:setup
Package:avahi Package:gnome-desktop Package:lcms Package:libjpeg Package:nss_ldap Package:shadow-utils
Package:cracklib Package:gnome-desktop Package:lcms Package:libpng Package:numactl Package:sound-juicer
Package:cracklib Package:gnome-keyring Package:libX11 Package:libpng Package:numactl Package:system-config-securitylevel
Package:cryptsetup-luks Package:gnome-keyring Package:libX11 Package:librsvg2 Package:openldap Package:tcp_wrappers
Package:cryptsetup-luks Package:gnome-menus Package:libbonobo Package:librsvg2 Package:openldap Package:tcp_wrappers
Package:cups Package:gnome-menus Package:libbonobo Package:libselinux Package:openssl Package:totem
Package:dbus Package:gnome-panel Package:libbonoboui Package:libselinux Package:openssl Package:totem
Package:dbus Package:gnome-panel Package:libbonoboui Package:libtiff Package:pam Package:wireless-tools
Package:device-mapper Package:gnome-pilot Package:libgcj Package:libtiff Package:pam Package:wireless-tools
Package:device-mapper Package:gnome-pilot Package:libglade2 Package:libuser Package:pam_krb5 Package:xml-common
Package:ecryptfs-utils Package:gnome-utils Package:libglade2 Package:libwmf Package:pam_krb5 Package:xulrunner
Package:ecryptfs-utils Package:gnome-utils Package:libgnome Package:libwmf Package:pam_passwdqc Package:xulrunner
Package:eel2 Package:gnome-vfs2 Package:libgnome Package:libwnck Package:pam_passwdqc
Package:eel2 Package:gnome-vfs2 Package:libgnomecanvas Package:libwnck Package:pam_pkcs11
Package:esound Package:gnutls Package:libgnomecanvas Package:libxklavier Package:pam_pkcs11
Package:esound Package:gnutls Package:libgnomecups Package:libxklavier Package:pam_smb
Total managed entries: 892
Unmanaged entries: 43
However, you should also see quite a few Incorrect entries as
well. This is due to some multiarch issues with RPM. The main problem
is that when both the 32 bit and 64 bit versions of a particular
package are installed, RPM is unable to verify the mtime on one or the
other (or both) of the packages. This is a problem because the
RPMng/YUMng drivers both attempt to verify installed packages.
There are a couple ways to get around this problem:
#. Turn off mtime verification globally (less time-consuming)
#. Remove 32 bit packages (may not be an option)
#. Turn off mtime verification per package instance (time-consuming)
For now, we will simply turn off mtime verification globally. In order
to do so, you must add nomtime to the verify_flags in the YUMng
section of bcfg2.conf::
[root@centos ~]# cat /etc/bcfg2.conf
[server]
repository = /var/lib/bcfg2
structures = Bundler,Base
generators = SSHbase,Cfg,Pkgmgr,Rules
# Uncomment to use the DBStats plugin (0.9.6pre2 and later)
#plugins = DBStats
[statistics]
sendmailpath = /usr/lib/sendmail
database_engine = sqlite3
# 'postgresql', 'mysql', 'mysql_old', 'sqlite3' or 'ado_mssql'.
database_name =
# Or path to database file if using sqlite3.
#<repository>/etc/brpt.sqlite is default path if left empty
database_user =
# Not used with sqlite3.
database_password =
# Not used with sqlite3.
database_host =
# Not used with sqlite3.
database_port =
# Set to empty string for default. Not used with sqlite3.
web_debug = True
[communication]
protocol = xmlrpc/ssl
password = N41lMNeW
key = /etc/bcfg2.key
[components]
bcfg2 = https://centos:6789
[YUMng]
verify_flags = nomtime
Running the client again yields a much more manageable result::
[root@centos ~]# bcfg2 -vqn
Loaded tool drivers:
Action Chkconfig FreeBSDInit POSIX YUMng
WARNING: Package bcfg2 0.9.6-1.el5.noarch requires GPG Public key with ID 119cc036217521f6
Disabling signature check.
WARNING: Package bcfg2-server 0.9.6-1.el5.noarch requires GPG Public key with ID 119cc036217521f6
Disabling signature check.
Package cups failed verification.
WARNING: Multiple instances of package gpg-pubkey are installed.
Extra InstallOnlyPackage gpg-pubkey e42d547b-3960bdf1.None.
Extra InstallOnlyPackage gpg-pubkey 6b8d79e6-3f49313d.None.
Extra InstallOnlyPackage gpg-pubkey 1aa78495-3eb24301.None.
Package gpg-pubkey failed verification.
Package iptables failed verification.
WARNING: Multiple instances of package kernel are installed.
Extra InstallOnlyPackage kernel 2.6.18-92.1.22.el5.x86_64.
Package kernel failed verification.
Package nautilus-sendto failed verification.
Package pam failed verification.
Package pam failed verification.
Package xulrunner failed verification.
Package xulrunner failed verification.
Phase: initial
Correct entries: 883
Incorrect entries: 9
Total managed entries: 892
Unmanaged entries: 43
In dryrun mode: suppressing entry installation for:
Package:cups Package:gpg-pubkey Package:iptables Package:kernel Package:nautilus-sendto Package:pam Package:pam Package:xulrunner Package:xulrunner
Phase: final
Correct entries: 883
Incorrect entries: 9
Package:cups Package:gpg-pubkey Package:iptables Package:kernel Package:nautilus-sendto Package:pam Package:pam Package:xulrunner Package:xulrunner
Total managed entries: 892
Unmanaged entries: 43
Generate service listing
########################
DBStats
-------
Setting up Django
+++++++++++++++++
|
