Tag Archives: centos

CentOS 8 & IBM Red Hat 8 QEMU & KVM

CentOS 8 & IBM Red Hat 8 support QEMU & KVM

# yum groupinstall "Virtualization Host"
# yum install virt-install
# yum install virt-manager
# yum install libvirt-nss
# systemctl enable --now libvirtd

however note that IBM Red Hat say

while QEMU is an essential component of the architecture, it is not intended to be used directly on RHEL 8 systems, due to security concerns. Therefore, using qemu-* commands is not supported by Red Hat, and it is highly recommended to interact with QEMU using libvirt.

so on centos 8 and ibm red hat 8 instead of qemu-* use these commands

$ virt-host-validate
$ virt-install
$ virt-manager
$ virt-viewer
$ virsh

See also

and red hat developers also can refer to

centos 7, @oraclelinux 7 & ibm red hat 7 docker install

centos 7, @oraclelinux 7 & ibm red hat 7 docker install

centos 7, @oraclelinux 7 docker install


red hat 7 docker install

# subscription-manager repos --enable rhel-7-server-extras-rpms
# subscription-manager repos --enable rhel-7-server-optional-rpms
# subscription-manager repos --enable rhel-7-server-supplementary-rpms
# subscription-manager repos --enable rhel-7-server-devtools-rpms
# subscription-manager repos --enable rhel-server-rhscl-7-rpms

# yum update

# yum install docker

# systemctl enable --now docker.service

see also

centos , @oraclelinux & ibm red hat #containers #devops

centos , @oraclelinux & ibm red hat #containers #devops

Red Hat Quay is an enterprise-quality container registry. Use Quay to build and store containers, then deploy them to the servers across your enterprise.

howto install #virtualbox guest additions in a #centos 6 #vm

howto install virtualbox guest additions in a centos 6 vm


# yum groupinstall "Development Tools"
# yum install kernel-devel
# yum install kernel-headers

red hat 5.x 64bit & vmware server 1.x

red hat enterprise linux 5.x 64bit with vmware server 1.x does not work out of the box ! since when you try and install it you may get the following error(s):

The correct version of one or more libraries needed to run VMware Server may be missing.
libX11.so.6 => not found
libXtst.so.6 => not found
libXext.so.6 => not found
libXt.so.6 => not found
libICE.so.6 => not found
libSM.so.6 => not found
libXrender.so.1 => not found
This program cannot tell for sure, but you may need to upgrade libc5 to glibc before you can run VMware Server.

and then when you try and enter your serial number you may get:

Please enter your 20-character serial number.

Type XXXXX-XXXXX-XXXXX-XXXXX or ‘Enter’ to cancel:


error while loading shared libraries:


cannot open shared object file:

No such file or directory

The serial number XXXXX-XXXXX-XXXXX-XXXXX is invalid.

this is because vmware server has been compiled against the 32bit X libraries which dont exist by default on a centos 64bit, oracle 64bit or red hat 64bit linux system so you’ll need to install them manually using:

# yum install libX libXtst libICE libSM

then re-run

# vmware-config.pl

VMware Server 1.x is alive and well

VMware Server 1.x is alive and well and still works fine with a CentOS/OEL/RHEL 5.x host and CentOS/OEL/RHEL 5.x guests

If you’ve ever struggled with VMware Server 2.x security configuration you should  find VMware Server 1.x security model much easier !