Cant ping a virtualbox created using NAT
So I created in my host machine (Ubuntu 17.10) a virtual machine with VirtualBox + Vagrant + Ansible.
Vagrant.configure("2") do |config| config.vm.box = "centos-7.3-x86_64_latest.box" config.vm.box_url = "" config.vm.hostname = "login.my-cloud.dev" config.vm.network "private_network", ip: "192.168.33.240" # enable to use synced folders # config.vm.synced_folder "/my/local/path", "/var/www/cce_login", disabled: true config.ssh.forward_agent = true config.ssh.keep_alive = true config.ssh.username = "vagrant" config.ssh.password = "vagrant" config.vm.provider :virtualbox do |v| # workaround as some virtualbox version seem to disconnect the NAT adapter v.customize ['modifyvm', :id, '--cableconnected1', 'on'] v.memory = 1024 v.cpus = 2 v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"] v.customize ["modifyvm", :id, "--name", "login.cce-cloud.dev"] v.customize ["modifyvm", :id, "--accelerate3d", "off"] v.customize ["modifyvm", :id, "--accelerate2dvideo", "off"] v.customize ["modifyvm", :id, "--cpuexecutioncap", "75"] v.customize ["modifyvm", :id, "--largepages", "on"] end config.vm.provision "ansible" do |ansible| ansible.playbook = "ansible/site.yml" ansible.verbose = "vvv" end
endI bring this machine up via
$ vagrant up --provisionAfter all this is done, I can log into SSH via Vagrant like this.
$ vagrant sshbut when I want to use it from MySQL Workbench, FTP access, or direct SSH, I get an error. I cant even ping the machine.
$ ping 192.168.33.240
PING 192.168.33.240 (192.168.33.240) 56(84) bytes of data.
From 192.168.33.1 icmp_seq=1 Destination Host Unreachable
From 192.168.33.1 icmp_seq=2 Destination Host Unreachable
From 192.168.33.1 icmp_seq=3 Destination Host UnreachableSince I do not have permission to change the Vagrantfile from the DevOps team, I figured the error must be somewhere in how my host machine is configured, but I cannot seem to see what the problem is.
$ ifconfig
enxdc9b9cee07b2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.111.198 netmask 255.255.255.0 broadcast 192.168.111.255 inet6 fe80::f0ad:1d52:8e55:7fc7 prefixlen 64 scopeid 0x20<link> ether dc:9b:9c:ee:07:b2 txqueuelen 1000 (Ethernet) RX packets 11159 bytes 4878538 (4.8 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 8289 bytes 2106425 (2.1 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 1607 bytes 173261 (173.2 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1607 bytes 173261 (173.2 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vboxnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.33.1 netmask 255.255.255.0 broadcast 192.168.33.255 inet6 fe80::800:27ff:fe00:0 prefixlen 64 scopeid 0x20<link> ether 0a:00:27:00:00:00 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 170 bytes 18067 (18.0 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0How could I change the configuration of my host OS, so that it reaches the virtual one?
Note: The enxdc9b9cee07b2 is my wired connection. I know it usually is eth0 but I am using an adapter for a USB port
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2 Answers
The only network configurations that allow Host to VM communication is Host Only and Bridged modes. There is a table here that shows the different network types and if it can access the host, other VMs, internet, etc. Only bridged mode gets you full network access but typically pulls an IP from your DHCP, which you probably don't want in this situation.
You can get around this by having 2 networks to fulfill your needs, NAT and Host Only.
7I found in the end the solution myself.
Apparently the version that comes pre-installed with Ubuntu is not the official DEB from oracle.
What I did is to save my virtual machines in a temp backup folder, then delete Vagrant and Virtualbox, and then download the official deb from their website.
Once I started the machines, they were working without any problem.
