19June

read

Setup vagrant with 2 or more CPU cores on 64bits systems

vagrant
cpu

Have you ever had this issue, asking vagrant to more than one CPU core but seeing only one ?
You will find here how to fix it.

Here is how i had setup my VagrantFile:

vb.customize ["modifyvm", :id, "--memory", "8192", "--cpus", "2"]

Seems good, but it does not work on 64bits systems.

~ sudo cat /proc/cpuinfo | grep 'processor'
processor : 0 # CPU1

You need another option to be enabled, called ioapic

vb.customize ["modifyvm", :id, "--memory", "8192", "--cpus", "2", "--ioapic", "on"]

Now, with this option, start you VM and...

~ sudo cat /proc/cpuinfo | grep 'processor'
processor : 0 # CPU1
processor : 1 # CPU2

Cheers!

03June

read

Oh-My-ZSH upgrade issue with bad substitution message

Show Comments Thomas VIAL

Any problem with automatic Oh-My-Zsh upgrade?

Last login: Mon May 13 13:57:50 2013 from domain.com
[Oh My Zsh] Would you like to check for updates?
Type Y to update oh-my-zsh: y
/home/user/.oh-my-zsh/tools/upgrade.sh: 2: Bad substitution

Simply do :

cd ~/.oh-my-zsh
git pull

And everything should be OK!

04March

read

Apple OSX Screen sharing over Internet or VPN

Show Comments Thomas VIAL

If your private network is reachable from Internet using a VPN, you probably noticed that computers do not appear in the left column of your Finder.
It does not mean that your remote computers are not available.

To connect to a Mac OSX screen sharing, from your Desktop, simply do :

cmd+K
Enter vnc://192.168.1.xxx (local ip of you remote machine)

You can do it from you terminal too :

open vnc://192.168.1.xxx

23February

read

Resize /dev/sda1 disk of your Vagrant / VirtualBox VM

Show Comments Thomas VIAL

[10:42:56] vagrant@server:~ > df
Sys. de fichiers 1K-blocs Utilisé Dispo. Uti% Monté sur  
/dev/sda1 1925072 1719144 108136 95% /
tmpfs 1030592 0 1030592 0% /lib/init/rw  
udev 1025752 144 1025608 1% /dev  
tmpfs 1030592 0 1030592 0% /dev/shm  
v-root 244277768 216144688 28133080 89% /vagrant

Wanna add some free space on your Virtual Machine ?
It can be done easily (5-10 minutes) following these 3 steps :

1. Add free space to the virtual disk

# Go to the VM folder on your Host computer.
cd ~/VirtualBox VMs/VM-NAME  
# Since resize can't be applied to .vmdk, we'll convert the disk to .vdi format
VBoxManage clonehd box-disk1.vmdk box-disk1.vdi --format vdi  
# Output example : # 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% # Clone hard disk created in format 'vdi'. UUID: 49474a0a-c48c-4b15-8df0-0b9687b4bbaf
# Now, let's resize the disk to add free space (from 2GB to 10GB => 1024*10)
VBoxManage modifyhd box-disk1.vdi --resize 10240  
# Output example :
# 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

Now, step 2 !

2. Modify your VM to use the new VDI disk

Download GParted ISO on your Host computer.
Now, follow these steps :

Open VirtualBox and select your stopped VM

Click Storage, and you will see you VDMK disk and its current Virtual Size (here, 2GB)

Click “-” to unattach this disk, which should disappear

Click “+” and select “choose existing disk”

Select your VDI disk

In “IDE Controller” section you should have a CD/DVD reader.

Click on the icon on the right and select “choose a virtual CD/DVD disk file…”

Select the GParted ISO you downloaded

Click “OK” ands now, you’re ready for the latest step.

3. Change partitions to use the free space

Start your virtual machine in VirtualBox GUI, it should boot GParted.

You can change the Keymap if needed, but it’s optional

You can change language, but it’s optional too

Start GParted with default option “0″

GParted displays your VM disks / partition. You can see that 8GB are free / unallocated.
You will have to remove /dev/sda2 (extented partition) to resize /dev/sda1

Resize your partition

Don’t forget to recreate your linux-swap partition at the end of the disk (I forgot this screenshot)

And apply changes to the filesystem !

You’re done ! You can shutdown the VM.

Now remove GParted ISO to let your VDI disk boot

As you can see, size changed from 2GB to 10GB

You can now boot you VM with vagrant up command.

[11:33:18] vagrant@server:~ > df
Sys. de fichiers 1K-blocs Utilisé Dispo. Uti% Monté sur  
/dev/sda1 8256440 1720684 6116380 22% /
tmpfs 1030592 0 1030592 0% /lib/init/rw  
udev 1025752 140 1025612 1% /dev  
tmpfs 1030592 0 1030592 0% /dev/shm  
v-root 244277768 218211680 26066088 90% /vagrant

14January

read

Getting "About this mac" informations using command line

Show Comments Thomas VIAL

If you don’t have a monitor plugged into your Mac like my MacMinis, and you need to get some technical informations about your machines (like Model Identifier for max memory), you can do it over SSH / command line, using the system_profiler command.

To get the list of available datatypes, use :

> system_profiler -listdatatypes

To get you model version:

> system_profiler SPHardwareDataType
Hardware:
Hardware Overview:
Model Name: MacBook Air
Model Identifier: MacBookAir4,2
Processor Name: Intel Core i7
Processor Speed: 1,8 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 4 GB
Boot ROM Version: MBA41.0077.B0F
SMC Version (system): 1.73f65
Serial Number (system): xxxxxxxxxxxxx
Hardware UUID: xxxxxxxx-xxxxxxxxx-xxxx-xxxxxxxxxxxx

You will find the same data you have in "About his Mac" tool.

Show Comments Thomas VIAL

vagrant
cpu

Have you ever had this issue, asking vagrant to more than one CPU core but seeing only one ?
You will find here how to fix it.

Here is how i had setup my VagrantFile:

vb.customize ["modifyvm", :id, "--memory", "8192", "--cpus", "2"]

Seems good, but it does not work on 64bits systems.

~ sudo cat /proc/cpuinfo | grep 'processor'
processor : 0 # CPU1

You need another option to be enabled, called ioapic

vb.customize ["modifyvm", :id, "--memory", "8192", "--cpus", "2", "--ioapic", "on"]

Now, with this option, start you VM and...

~ sudo cat /proc/cpuinfo | grep 'processor'
processor : 0 # CPU1
processor : 1 # CPU2

Cheers!

Show Comments Thomas VIAL

Any problem with automatic Oh-My-Zsh upgrade?

Last login: Mon May 13 13:57:50 2013 from domain.com
[Oh My Zsh] Would you like to check for updates?
Type Y to update oh-my-zsh: y
/home/user/.oh-my-zsh/tools/upgrade.sh: 2: Bad substitution

Simply do :

cd ~/.oh-my-zsh
git pull

And everything should be OK!

Show Comments Thomas VIAL

To connect to a Mac OSX screen sharing, from your Desktop, simply do :

cmd+K
Enter vnc://192.168.1.xxx (local ip of you remote machine)

You can do it from you terminal too :

open vnc://192.168.1.xxx

Show Comments Thomas VIAL

[10:42:56] vagrant@server:~ > df
Sys. de fichiers 1K-blocs Utilisé Dispo. Uti% Monté sur  
/dev/sda1 1925072 1719144 108136 95% /
tmpfs 1030592 0 1030592 0% /lib/init/rw  
udev 1025752 144 1025608 1% /dev  
tmpfs 1030592 0 1030592 0% /dev/shm  
v-root 244277768 216144688 28133080 89% /vagrant

Wanna add some free space on your Virtual Machine ?
It can be done easily (5-10 minutes) following these 3 steps :

1. Add free space to the virtual disk

# Go to the VM folder on your Host computer.
cd ~/VirtualBox VMs/VM-NAME  
# Since resize can't be applied to .vmdk, we'll convert the disk to .vdi format
VBoxManage clonehd box-disk1.vmdk box-disk1.vdi --format vdi  
# Output example : # 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% # Clone hard disk created in format 'vdi'. UUID: 49474a0a-c48c-4b15-8df0-0b9687b4bbaf
# Now, let's resize the disk to add free space (from 2GB to 10GB => 1024*10)
VBoxManage modifyhd box-disk1.vdi --resize 10240  
# Output example :
# 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

Now, step 2 !

2. Modify your VM to use the new VDI disk

Download GParted ISO on your Host computer.
Now, follow these steps :

Open VirtualBox and select your stopped VM

Click Storage, and you will see you VDMK disk and its current Virtual Size (here, 2GB)

Click “-” to unattach this disk, which should disappear

Click “+” and select “choose existing disk”

Select your VDI disk

In “IDE Controller” section you should have a CD/DVD reader.

Click on the icon on the right and select “choose a virtual CD/DVD disk file…”

Select the GParted ISO you downloaded

Click “OK” ands now, you’re ready for the latest step.

3. Change partitions to use the free space

Start your virtual machine in VirtualBox GUI, it should boot GParted.

You can change the Keymap if needed, but it’s optional

You can change language, but it’s optional too

Start GParted with default option “0″

GParted displays your VM disks / partition. You can see that 8GB are free / unallocated.
You will have to remove /dev/sda2 (extented partition) to resize /dev/sda1

Resize your partition

Don’t forget to recreate your linux-swap partition at the end of the disk (I forgot this screenshot)

And apply changes to the filesystem !

You’re done ! You can shutdown the VM.

Now remove GParted ISO to let your VDI disk boot

As you can see, size changed from 2GB to 10GB

You can now boot you VM with vagrant up command.

[11:33:18] vagrant@server:~ > df
Sys. de fichiers 1K-blocs Utilisé Dispo. Uti% Monté sur  
/dev/sda1 8256440 1720684 6116380 22% /
tmpfs 1030592 0 1030592 0% /lib/init/rw  
udev 1025752 140 1025612 1% /dev  
tmpfs 1030592 0 1030592 0% /dev/shm  
v-root 244277768 218211680 26066088 90% /vagrant

Show Comments Thomas VIAL

To get the list of available datatypes, use :

> system_profiler -listdatatypes

To get you model version:

> system_profiler SPHardwareDataType
Hardware:
Hardware Overview:
Model Name: MacBook Air
Model Identifier: MacBookAir4,2
Processor Name: Intel Core i7
Processor Speed: 1,8 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 4 GB
Boot ROM Version: MBA41.0077.B0F
SMC Version (system): 1.73f65
Serial Number (system): xxxxxxxxxxxxx
Hardware UUID: xxxxxxxx-xxxxxxxxx-xxxx-xxxxxxxxxxxx

You will find the same data you have in "About his Mac" tool.

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Setup vagrant with 2 or more CPU cores on 64bits systems