"Device eth0 does not seem to be present" After Cloning a Centos machine on Vsphere

Hi,

After cloning or moving a machine in VSphere, On starting the Virtual machine, I got error message as below

"Device eth0 does not seem to be present" Delaying initialization.

On cloning a Virtual machine on Vsphere, we need to edit the MAC adress on the VM settings. This change is recognized by the new VM . But it will list the NIC as eth1 instead of eth0, as eth0 MAC adress(Adress of the VM from which we cloned it) is still in the configuration file of new VM.

The configuration file where the Centos machine stores its NIC information is in

  vi /etc/udev/rules.d/70-persistent-net.rule

This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.

# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:02:bf:b5", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:8b:2f:fd", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"


As you can see tat the new MAC Adress is recognized as the adress for eth1. So eth0 won't start.


so we need to edit that file and delete the first entry of in that file.


Then rename the eth1 to eth0  keeping only the second line.


After that start udev configuration using the command below


start_udev

Now restart network services:

service network restart

 

If there is proper configurations are set in the file /etc/sysconfig/network-scripts/ifcfg-eth0, then the eth0 will start.

Cheers

Syam

 

Error: Package: python-paramiko-1.7.6-1.el5.rf.noarch (rpmforge) Requires: python(abi) = 2.4

Hi,

 I had to install a package on a Centos 6.3 machine and I got python dependancy error as below.

Resolving Dependencies
--> Running transaction check
---> Package libedit.x86_64 0:2.11-4.20080712cvs.1.el6 will be updated
---> Package libedit.x86_64 0:20090923-3.0_1.el5.rf will be an update
---> Package libffi.x86_64 0:3.0.5-3.2.el6 will be updated
---> Package libffi.x86_64 0:3.0.9-1.el5.rf will be an update
---> Package perl-Test-Harness.x86_64 0:3.17-129.el6 will be updated
---> Package perl-Test-Harness.noarch 0:3.22-1.el5.rf will be an update
---> Package perl-Test-Simple.x86_64 0:0.92-129.el6 will be updated
---> Package perl-Test-Simple.noarch 0:0.98-1.el5.rf will be an update
---> Package portreserve.x86_64 0:0.0.4-9.el6 will be updated
---> Package portreserve.x86_64 0:0.0.5-2.el5.rf will be an update
---> Package python-beaker.noarch 0:1.3.1-6.el6 will be updated
---> Package python-beaker.noarch 0:1.5.3-1.el5.rf will be an update
--> Processing Dependency: python(abi) = 2.4 for package: python-beaker-1.5.3-1.el5.rf.noarch
---> Package python-mako.noarch 0:0.3.4-1.el6 will be updated
---> Package python-mako.noarch 0:0.3.5-1.el5.rf will be an update
--> Processing Dependency: python(abi) = 2.4 for package: python-mako-0.3.5-1.el5.rf.noarch
---> Package python-markupsafe.x86_64 0:0.9.2-4.el6 will be updated
---> Package python-markupsafe.x86_64 0:0.11-1.el5.rf will be an update
--> Processing Dependency: python(abi) = 2.4 for package: python-markupsafe-0.11-1.el5.rf.x86_64
---> Package python-paramiko.noarch 0:1.7.5-2.1.el6 will be updated
---> Package python-paramiko.noarch 0:1.7.6-1.el5.rf will be an update
--> Processing Dependency: python(abi) = 2.4 for package: python-paramiko-1.7.6-1.el5.rf.noarch
--> Finished Dependency Resolution
Error: Package: python-mako-0.3.5-1.el5.rf.noarch (rpmforge)
           Requires: python(abi) = 2.4
 Installed: python-2.6.6-36.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4)
               python(abi) = 2.6
           Available: python-2.6.5-3.el6.i686 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.5-3.el6_0.2.i686 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-20.el6.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6_2.2.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6_3.3.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
Error: Package: python-paramiko-1.7.6-1.el5.rf.noarch (rpmforge)
           Requires: python(abi) = 2.4

 Installed: python-2.6.6-36.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4)
               python(abi) = 2.6
           Available: python-2.6.5-3.el6.i686 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.5-3.el6_0.2.i686 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-20.el6.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6_2.2.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
           Available: python-2.6.6-29.el6_3.3.x86_64 (rhel-6-workstation-rpms)
               python(abi) = 2.6
Error: Package: python-beaker-1.5.3-1.el5.rf.noarch (rpmforge)
           Requires: python(abi)

 Installed: python-2.6.6-36.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4)
               python(abi) = 2.6
     Available: python-2.6.5-3.el6.i686 (rhel-6-workstation-rpms)

The reason is that the python 2.6 package was installed by default on the Centos .But the new installation needs the python 2.4 . The best option is to install python-devel package for that.

So we can install it by enabling the EPEL repository in Centos. Below are the steps to enable EPEL repository in Centos

Enable EPEL Repository

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm

Then do the following steps

yum clean all

yum clean metadata

Then install the required package. It will work

Cheers
Syam 

Reset Qmail Admin Postmaster Password

Hi All,


You need to login to Qmail Admin as postmaster inorder to control the email settings or to create new email accounts for the domain etc. But once you forget the password of postmaster account of the domain, you won't be able to manage the domain through the admin toaster.


Below is the step to reset the Admin password for the Qmail

1)First login to the Qmail server
2)Reset the password using the command as below

"/home/vpopmail/bin/vpasswd postmaster@testdomain.com"

change the password to new one. Now you will be able to login to the postmaster account with the new password.

Regards
Syamkumar

no iKVM64 in java.library.path on SuperMicro IP KVM

Hi All,


I faced an issue on accessing IPMI on  ubuntu 11.10. On launching java .jnlp file I am getting error message as below and got disconnected

"no iKVM64 in java.library.path on SuperMicro IP KVM"

A workaround for this problem is to download the .jnlp file and open it with an editor. Copy the two lines stated below, taken from the <resources> entry, to the corresponding <resources os=”Linux” arch=”amd64″> entry. Then start the file with java webstart.

<property name="jnlp.packEnabled" value="true"/>
<property name="jnlp.versionEnabled" value="true"/>