First off all, make sure the network ready for host/guest, have a plan is better than anything.
Actually KVM Bridge is pretty need your time if you got no experience or umfamilier with it. Be patient, understand your environment before going to set it up. There are a lot information on Google, but make sure the post is similar to your environment.
In fact, you can feel that KVM is pretty conviencent, and got a lot information/help/guideline on internet.
Snapshot is your best friend. You can beat anything down with this tool, remember it!
Snapshot is also a great tool. That’s feel good that me always have several VMs on my mahcine.
I think VMs actually is one kind of solution for malware. I have one VM specially for Bank Web. Also another VM for china web site, and another for the web site I think maybe got problem. By snapshot, I can using VMs to avoid compromise.
It’s same as setting VM on KVM, prepare the plan for network is most important thing. bridge network is a way to get the VM similar standalone machine. Just take care, some wifi environment is not allow this mode.
If your VM installed by minimal install ISO, suppose have to install some tools when the Operating System ready. I used nano for text editor, so I always run sudo yum install -y net-tools nano wget curl to install the basic tools, curl and wget are the great tools to access network. If failed on yum install, maybe you should check your network first.
Check firewall. In CentOS 7 you can check it by sudo systemctl status firewalld, and config the port if the status is “active”
Install pip, this is Python package management tool, you can using wget download get-pip.py by wget https://bootstrap.pypa.io/get-pip.py and install it by python sudo python get-pip.py.
If we need Tornado for Realtime, and still want to have Flask, Serge Koval wroten a great post -Python Realtime, this post detail the concept and also provide a complete guideline for how to utilize them in the same time.
You can look Realtime as there is keeping a connection between client and Server. The connection is considered on HTTP Request’s Header cost, we can pnly relay on Comet) before the Websocket. But Websocket got browser support condition, if you want to implement it, please check your target customer/client’s Browser version before implmentation.
If still not work, maybe you can diable the IPv6 and try again:
sudo nano /etc/sysctl.conf
And add following at the end
# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1
Then reboot the system, rm and check it again.
If still seeing the error message, check the exim4 log file:
if there has IPv6 socket creation failed: Address family not supported by protocol, we can change dc_local_interfaces='127.0.0.1 ; ::1' on sudo nano /etc/exim4/update-exim4.conf.conf to be dc_local_interfaces='127.0.0.1'.
and then sudo rm /var/log/exim4/paniclog and restart the service. suppose the error message gone, and now we can test the logwatch now, sudo /usr/sbin/logwatch, check the maile when the command done.
SOLVED. see this thread for more details:
in short - use global catalog (http://tinyurl.com/pbhhr) instead of
domain-level lookup. in order to do this, use port 3268 instead of 389.
If you cannot add .net framework 3.5 as new feature into windows 2012 server, maybe you can put in the DVD (windows server 2012), and add .net framework 3.5 feature by server manager. Remember point to [CDROM]:\Sources\SxS, and contine the installation.