Drones Personalizados

Sunday, March 27, 2016

Google Cloud Plataform - Compute engine - comand line examples

#list machine types
gcloud compute machine-types list

#list created instances
gcloud compute instances list

#create a redhat-6 instance with default machine type
gcloud compute instances create example-instance --image rhel-6 --zone us-central1-a

#delete redhat-6 instance
gcloud compute instances delete example-instance --zone us-central1-a

#create a ubuntu 15.10 instance with f1-micro machine type
gcloud compute instances create ubuntu1510-f1micro --image ubuntu-15-10 --zone us-central1-a --machine-type f1-micro

#create a ubuntu 15.10 instance with f1-micro machine type with HTTP/HTTPS enabled
gcloud compute instances create ubuntu1510-f1micro --image ubuntu-15-10 --zone us-central1-a --machine-type f1-micro --tags http-server,https-server

#stop ubuntu 15.10 instance
gcloud compute instances stop ubuntu1510-f1micro --zone us-central1-a

#start ubuntu 15.10 instance
gcloud compute instances start ubuntu1510-f1micro --zone us-central1-a

#hardware reboot ubuntu 15.10 instance
gcloud compute instances reset ubuntu1510-f1micro --zone us-central1-a

#ubuntu 15.10 instance change machine type to n1-standard-1
gcloud compute instances set-machine-type ubuntu1510-f1micro --machine-type n1-standard-1 --zone us-central1-a

#ubuntu 15.10 instance change machine type to g1-small
gcloud compute instances set-machine-type ubuntu1510-f1micro --machine-type g1-small --zone us-central1-a

#ubuntu 15.10 instance change machine type to f1-micro
gcloud compute instances set-machine-type ubuntu1510-f1micro --machine-type f1-micro --zone us-central1-a

#ubuntu 15.10 instance enable HTTP/HTTPS access
gcloud compute instances add-tags ubuntu1510-f1micro --zone us-central1-a --tags http-server,https-server

Wednesday, March 23, 2016

Ubuntu kernel Rebuild

# Get source

apt-get source linux-image-$(uname -r)

# Get tools

apt-get build-dep linux-image-$(uname -r)

# Copy current config

cp -v /boot/config-$(uname -r) .config

# Customize config

make menuconfig

# parallel build

make -j

# Install kernel modules first (~260MB with debug symbols stripped)

make INSTALL_MOD_STRIP=1 modules_install

# Install kernel image (~6MB)

make install

# Reboot

References:

https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel

Saturday, February 20, 2016

watchdog script for openwrt

Friday, January 15, 2016

Make a multi-resolution favicon.ico from a source image, using ImageMagick

convert favicon.png -define icon:auto-resize=64,48,32,16 favicon.ico

Friday, December 11, 2015

Firmware Openwrt-15.05 para roteadores TP-Link com suporte OpenVPN

A imagem padrão disponível no site do Openwrt-15.05 não tem suporte ao OpenVPN, que pode ser instalado pelo gerenciador de pacotes 'opkg', mas devido a limitada memória flash de 4MB de grande maioria dos modelos, a instalação do Openvpn falha por falta de espaço. Mas se a imagem for feita com carinho com o OpenVPN já embutido durante a compilação vai funcionar nos limitados modelos low-cost de 4MB. A quem interessar disponibilizei essas imagens com OpenVPN para modelos de 4MB, veja nos Downloads do blog, essa lista de arquivos: DOWNLOAD

openwrt-15.05-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-mr3220-v1-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-mr3220-v2-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-mr3420-v1-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-mr3420-v2-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-wr1043nd-v1-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-wr1043nd-v2-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-wr740n-v1-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-wr740n-v3-squashfs-factory.bin openwrt-15.05-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin