Remove xCAT

We’re sorry to see you go! Here are some steps for removing the xCAT product.

Clean Up xCAT Related Configuration

1. To clean up the node information from dhcp

   makedhcp -d -a
   

2. To clean up the node information in tftpboot

   nodeset all offline
   

3. To clean up the node information from /etc/hosts (optional)

Keeping xCAT nodes information in /etc/hosts is harmless, but if you really want to remove them from /etc/hosts run:

makehosts -d all

4. To clean up the node information from DNS (optional)

After removing all the nodes from /etc/hosts, run below command to clean up the node information from DNS.

makedns -n

Stop xCAT Service

1. Stop xCAT service

   service xcatd stop
   

2. Stop xCAT related services(Optional)

XCAT uses various network services on the management node and service nodes, the network services setup by xCAT may need to be cleaned up on the management node and service nodes before uninstalling xCAT.

• NFS : Stop nfs service, unexport all the file systems exported by xCAT, and remove the xCAT file systems from /etc/exports.
• HTTP: Stop http service, remove the xcat.conf in the http configuration directory.
• TFTP: Stop tftp service, remove the tftp files created by xCAT in tftp directory.
• DHCP: Stop dhcp service, remove the configuration made by xCAT in dhcp configuration files.
• DNS : Stop the named service, remove the named entries created by xCAT from the named database.

Remove xCAT Files

1. Remove the xCAT RPMs

There is no easy way to distinct all the packages depending by xCAT. For packages shipped by xCAT, you can remove them by the commands below.

[RHEL and SLES]

rpm -qa |grep -i xcat

[Ubuntu]

dpkg -l | awk '/xcat/ { print $2 }'

If you want to remove more cleanly, the list bleow maybe helpful. Listed are the packages of xcat installation tarball. Some RPMs may not to be installed in a specific environment.

• XCAT Core Packages list (xcat-core):

  [RHEL and SLES]

  perl-xCAT
  xCAT
  xCAT-buildkit
  xCAT-client
  xCAT-confluent
  xCAT-genesis-scripts-ppc64
  xCAT-genesis-scripts-x86_64
  xCAT-server
  xCATsn
  xCAT-SoftLayer
  xCAT-test
  xCAT-vlan
  

  [Ubuntu]

  perl-xcat
  xcat
  xcat-buildkit
  xcat-client
  xcat-confluent
  xcat-genesis-scripts
  xcat-server
  xcatsn
  xcat-test
  xcat-vlan
  

• XCAT Dependency Packages (xcat-dep):

  [RHEL and SLES]

  conserver-xcat
  cpio
  cpio-lang
  elilo-xcat
  esxboot-xcat
  fping
  ganglia-devel
  ganglia-gmetad
  ganglia-gmond
  ganglia-gmond-modules-python
  ganglia-web
  grub2-xcat
  ipmitool-xcat
  libconfuse
  libconfuse-devel
  libganglia
  lldpd
  net-snmp-perl
  perl-AppConfig
  perl-Compress-Raw-Zlib
  perl-Crypt-Blowfish
  perl-Crypt-CBC
  perl-Crypt-Rijndael
  perl-Crypt-SSLeay
  perl-DBD-DB2
  perl-DBD-DB2Lite
  perl-DBD-Pg
  perl-DBD-SQLite
  perl-Expect
  perl-HTML-Form
  perl-IO-Compress-Base
  perl-IO-Compress-Zlib
  perl-IO-Socket-SSL
  perl-IO-Stty
  perl-IO-Tty
  perl-JSON
  perl-Net-DNS
  perl-Net-Telnet
  perl-SOAP-Lite
  perl-Test-Manifest
  perl-version
  perl-XML-Simple
  pyodbc
  rrdtool
  scsi-target-utils
  stunnel
  syslinux-xcat
  systemconfigurator
  systemimager-client
  systemimager-common
  systemimager-server
  xCAT-genesis-base-ppc64
  xCAT-genesis-base-x86_64
  xCAT-genesis-x86_64
  xCAT-UI-deps
  xnba-kvm
  xnba-undi
  yaboot-xcat
  zhcp
  

  [Ubuntu]

  conserver-xcat
  elilo-xcat
  grub2-xcat
  ipmitool-xcat
  syslinux
  syslinux-extlinux
  syslinux-xcat
  xcat-genesis-base-amd64
  xcat-genesis-base-ppc64
  xnba-undi
  

Along with xCAT development, above lists maybe change, you can get the latest list through below links:

• XCAT Core Packages List (xcat-core)

  [RHEL and SLES]

  http://xcat.org/files/xcat/repos/yum/<version>/xcat-core/
  

  [Ubuntu]

  http://xcat.org/files/xcat/repos/apt/<version>/xcat-core/
  

• XCAT Dependency Packages (xcat-dep)

RPM Packages List (RHEL and SLES)

Debian Packages List (Ubuntu)

Generally, we use yum install xCAT to install xCAT, so these are some RPMs shipped by operating system are installed during xCAT installation. We don’t have an easy way to find out all of them, but keep these RPMs are harmless.

2. Remove xCAT certificate file

   rm -rf /root/.xcat
   

3. Remove xCAT data file

By default, xCAT use SQLite, remove SQLite data file under /etc/xcat/.

rm -rf /etc/xcat

4. Remove xCAT related file(Optional)

XCAT has ever operated below directory when it was running. Do judgment by yourself before removing these directory, to avoid removing some directories used for other purpose in your environment.

/install
/tftpboot
/etc/yum.repos.d/xCAT-*
/etc/sysconfig/xcat
/etc/apache2/conf.d/xCAT-*
/etc/logrotate.d/xCAT-*
/etc/rsyslogd.d/xCAT-*
/var/log/xcat
/opt/xcat/
/mnt/xcat

Remove Databases

• Removing xCAT DB from PostgreSQL.
• Removing xCAT DB from MySQL/MariaDB.