Good morning to all,
I have installed Centos 6.7 x86 64 on a Virtual Machine. It is not the first time I'm using this virtual machine...I have already installed a Windows xp 32 bit system, and a Centos 7 with graphical interfac system, and they both connected as well. This time I can't start a connection. In the virtual machine I set the parameters on "NAT" and "Connected Cable", and here I report my inux configurations:
Configure eth0
#
vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
NM_CONTROLLED="yes"
ONBOOT=yes
HWADDR=A4:BA:DB:37:F1:04
TYPE=Ethernet
BOOTPROTO=static
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
IPADDR=192.168.8.171
NETMASK=255.255.255.0
Configure Default Gateway
#
vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=centos6
GATEWAY=192.168.8.3
Restart Network Interface
#
/etc/init.d/network restart
Configure DNS Server
#
vi /etc/resolv.conf
nameserver 8.8.8.8
"
I've copied this parameters from a website guide. Anyway, I tried also setting NM_CONTROLLED=no and ONBOOT=no, but nothing works.
Even if I try to pinging google by the command
ping www.google.it
it doesn't work.
Any suggestions?
Related
so i setup a centOS vm in VMware workstation, installed qradar..everything ran fine. I call this vm as QR1.
I was able to use qradar console on QR1 from my host machine, the internet works perfectly fine in QR1.
I make a full clone of QR1 called it QR2.
I boot it up and only running QR2 vm (QR1 is closed) but there is no internet on this vm. Even though all the network setting are same as QR1 and QR1 works just fine(i double checked).
QR2 has same adapter, same ip, same gateway and dns as of QR1 but it doesnt work...
previously i was thinking that i cannot have them both running at same time but QR2 just doesnt connect.
I am also not able to ping QR2 from my host and other way around.
What could be causing this ?
According to this vmware link reference, try these steps:
To change the MAC address of the Linux operating system:
Connect to vCenter Server using the vSphere Client Right-click the
virtual machine and click Edit Settings. Click Network adapter and
note the MAC Address.
For example, you see a MAC Address similar to:
xx:xx:xx:xx:xx:xx
1.Power on the Linux virtual machine.
2.Open a console and log in as root.
3.Change directory to etc/sysconfig/network-scripts.
4.Edit ifcfg-eth0 using a plain text editor and update the MAC address to reflect the MAC address in Step 3.
I am attempting to set up a VM using VirtualBox. I am hosting on Windows 10 and want to set up a CentOS vm. I have a VM running but have had problems getting network connectivity with it. I have no experience with VirtualBox and it has been a long time since I worked on Linux. Any ideas on what I need to do to correct this? Are there some steps I need to take during the creation of the image?
Image is : CentOS-7-x86_64-Everything-1708.iso
VirtualBox : Version 5.1.28 r117968 (Qt5.6.2)
When I try to ping anything I get " connection the Network is unreachable
The very best thing you should do is running the following command:
ifconfig -a
Then, If you have an interface listed (not just 'lo'), you can do that:
# cd /etc/sysconfig/network-scripts/
# sed -i -e 's#^ONBOOT="no#ONBOOT="yes#' ifcfg-{{network_device}}
replace {{network_device}} for your default network_device (from ifconfig-a command).
Then restart and it should connect.
I am running Centos 7 x86-64. I installed a guest (again Centos 7) through kickstart as an exercise. I prepared my kickstart file, I validated it and I launched with virt-install.
If something went wrong with the network configuration (During install I got no problem, I created a local repo on Host FTP server as source for the install) how can I connect to the machine?
Only SSH or virsh foresee some other connection method?
How can I find my machine running network configuration from outside?
I am running a barebone Centos7 installation so only command line, no graphical interface at all.
Thanks,
M.
You can ssh to your physical host from another one having graphical interface with X forwarding enabled (ssh -X machinename), and look at the the VM with virt-manager
You will need X running on the machine you're connecting from. For Mac OS it's XQuartz
I have a VirtualBox machine running Ubuntu 12.04 in a Mac OS X host machine. In my host machine (Mac OS X), I have PostgreSQL installed. I would like to connect to this PostgreSQL server from my Ubuntu virtual machine (I know normally it's the opposite way).
I guess I should configure some networking parameters in VirtualBox itself. All I get from Vagrant docs is I need to assign my vm a static IP to use a private network. But once created, how do I reach my host from my guest?
I didn't find anything like that in vagrant docs. So, there's probably a good reason for that. Does it make sense? I don't want to duplicate PostgreSQL installation. Just use my current existent one.
You can reach your host from your guest by using the default gateway on your VM.
See this answer for an explanation.
By running netstat -rn you can get the default gateway and then use that ip address in your config file of your application.
Running netstat -rn | grep "^0.0.0.0 " | cut -d " " -f10 should give you the correct ip address. (only tested this on my machine)
Easy way - simply use this "magic" IP from inside of vagrant without any additional configurations:
10.0.2.2
Don't know if it's always static, though for me works and it's very convenient - I can use laptop at home, from office - having assigned different IPs to me by routers, but my VMs know the "trusty name" of their master 🐶
I have the following configuration:
Host OS: Windows 7 SP1
Guest OS: Windows XP SP3 Pro
Guest OS is running inside VMWare Workstation version 7
I have configured a virtual serial port on the VM of type "output named pipe" and the following name:
\\.\pipe\whatever
I have also added the appropriate options to the boot.ini file on Win XP SP3 Pro image to allow for debugging (/debugport=com1 baudrate=115200)
in windbg, I configure the Kernel Debug option by going to:
File->Kernel Debug
and selecting the COM tab and configuring as follows:
Giving port name as:
\\.\pipe\whatever
and checking the Pipe box.
I boot up the Windows XP SP3 VM and select the second entry which has debug mode enabled. Right after I do this, I click on Ok inside the Windbg to start the kernel debugging session.
But even then it remains stuck at the following message:
Opened \.\pipe\whatever
Waiting to reconnect...
It says "Debuggee not connected" and stays at that message even after Virtual Machine boots up completely. The status of the Virtual Serial port in the VmWare also shows as Connected.
I have checked the network connections.
The VM has the Network Adapter in the Bridged Mode and I am able to ping the Guest OS and Host OS from each other successfully.
Your problem is likely to be that WinDbg isn't breaking on connect, so it's connected but it doesn't say so, and you think it's not working.
I had better luck running WinDbg from the command line with a -b, though I notice this option might have been removed in the later builds. I've tested with 6.12.0002.633 x86.
windbg -b -k com:pipe,port=\\.\pipe\com_1
(From here.)
I have had the same problem, and after changing the port at your windows guest (the one at the vmware) you should be connect. In my case the port at the boot.ini file was com1 and i have changed it to com2.
Did you also enable /debug in the boot.ini?
It could also be your VMWare serial port configuration. Config should be:
Use named pipe: \.\pipe\whatever
This end is the server.
The other end is an application.
Yield CPU on poll should be checked.
More info here:
http://www.vmware.com/support/ws5/doc/ws_devices_serial_advanced_example_debugging.html