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Archive for the ‘SuSE Linux’ Category

The woods and trees of OpenSuSE on single-board computers – image abbreviations – and getting it installed using OS X

Posted by jpluimers on 2017/02/27

Finding the right image

There are many single-board computers on the OpenSuSE hardware-compatibility list (HCL), including:

A lot of them have ready to go images, often for Tumbleweed, however none of the pages explain the below image differences hence the one-line for each:

Since I wanted a headless system, JeOS was what I needed.

As it wasn’t available for my ODroid C1+ but was for my Raspberry Pi 2 and as my main machine is a 15″ Retina MacBook Pro Late 2013 [WayBack] below are the steps I used to get the image working.

Installing the Raspberry Pi 2 image using OS X

The below Raspberry Pi2 link will redirect to the correct image in the generic download directory http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/RaspberryPi2/images/

http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/RaspberryPi2/images/openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l.raw.xz

For other Raspberry Pi versions, you can find them here:

http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/RaspberryPi3/images/openSUSE-Tumbleweed-ARM-JeOS-raspberrypi3.aarch64.raw.xz

http://download.opensuse.org/ports/armv6hl/tumbleweed/images/openSUSE-Tumbleweed-ARM-JeOS-raspberrypi.armv6l-Current.raw.xz

I installed on a 8 gigabyte SD card that revealed itself as /dev/disk1 using this diskutil command (via osx – List all devices connected, lsblk for Mac OS X – Ask Different [WayBack])

diskutil list

So this wrote the image to SD card in a sudo su - prompt:

targetDevice="disk2"
unxz --keep openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw.xz; \
diskutil umount "/dev/${targetDevice}s1"; \
dd bs=1m of="/dev/r${targetDevice}" if=openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw; \
sync; \
diskutil list; \
diskutil eject "/dev/${targetDevice}"

or if you want to select which image to “burn”:

targetDevice="disk2"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi.armv6l-2016.11.23-Build2.22.raw"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi3.aarch64-2017.01.12-Build3.2.raw"
unxz --keep ${imageName}.xz; \
diskutil umount "/dev/${targetDevice}s1"; \
dd bs=1m of="/dev/r${targetDevice}" if=${imageName}; \
sync; \
diskutil list; \
diskutil eject "/dev/${targetDevice}"

A few notes:

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Posted in *nix, Development, Hardware, Hardware Development, Linux, openSuSE, Power User, Raspberry Pi, Single-Board Computers, SuSE Linux, Tumbleweed | Leave a Comment »

Some links I’ll need for monit one day

Posted by jpluimers on 2017/02/17

Getting monit to run on opensuse isn’t a feat.

I might try again one day with these links:

–jeroen

Posted in *nix, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »

pi-hole/pi-hole: A black hole for Internet advertisements (designed for Raspberry Pi)

Posted by jpluimers on 2017/01/31

pi-hole – A black hole for Internet advertisements (designed for Raspberry Pi)

Works on most Debian distributions as well. Hopefully on opensuse one day as well.

Source: pi-hole/pi-hole: A black hole for Internet advertisements (designed for Raspberry Pi)

Not exactly the nicest way of installing though:

curl -L install.pi-hole.net | bash

Source: Pi-Hole: A Black Hole For Internet Advertisements

Source: In the past year, a similar threat has begun to emerge on mobile devices:…

Note that any ad-block mechanism needs curation to white/black list some stuff. But: who does that and who watches the curators?

Source: In the past year, a similar threat has begun to emerge on mobile devices: So-called overlay malware that impersonates login pages from popular apps and… – Jeroen Wiert Pluimers – Google+

via:

Some more links for when you get this going:

Changing hostname

As all raspbian hosts advertise their hostname as raspberrypi it is confusing to set them apart, so I changed the hostname in these files:

/etc/hostname
/etc/hosts
/etc/wicd/wired-settings.conf
/etc/wicd/wireless-settings.conf

Then rebooted (probably could have done sudo /etc/init.d/hostname.sh) to force the new hostname to be used everywhere.

DHCP versus static IP

Note that pi-hole by default converts the DHCP assigned address on eth0 to a static one. This makes it harder to use pi-hole in these situations:

  • preparing a pi-hole on network A and deploying it on network B
  • using pi-hole on a DHCP based network where the DHCP server hands out fixed IP addresses based on MAC

To get going I:

  1. filed an issue Work with DHCP address instead of static IP address configuration. · Issue #629 · pi-hole/pi-hole
  2. plugged in the Edimax EW-7811Un 150Mbps 11n Wi-Fi USB Adapter  which appeared as wlan0 in the ifconfig list
  3. failed in getting wicd-curses to work: it would only detect half of the WiFi networks that iwlist wlan0 scan detects.
  4. used the steps at Setting WiFi up via the command line – Raspberry Pi Documentation to get WLAN going:
    1. perform sudo iwlist wlan0 scan | grep ESSID scan to get a list of networks and their (E)SSID names
    2. append the below fragment to the end of /etc/wpa_supplicant/wpa_supplicant.conf and correct the value for ssid to the ESSID (keep the double quotes around it) and psk to the password for that ESSID (also keep the double quotes around it)
    3. performed sudo ifdown wlan0  and sudo fup wlan0 to force a WiFi connection refresh
    4. waited 30 seconds for a DHCP address to appear in ifconfig for wlan0
network={
    ssid="The_ESSID_from_earlier"
    psk="Your_wifi_password"
}

 

 

–jeroen

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Posted in *nix, bash, Development, Linux, openSuSE, Power User, Scripting, Software Development, SuSE Linux, Tumbleweed | Leave a Comment »

linux port forwarding to external ip – Google Search

Posted by jpluimers on 2017/01/20

For my Link Archive via linux port forwarding to external ip – Google Search:

Need to look at this more closely, but it looks like you need PREROUTING, FORWARD and POSTROUTING and two NATs (DNAT and SNAT), as this graph from Port Forwarding Using iptables – SysTutorials shows:

PACKET IN
    |
PREROUTING--[routing]-->--FORWARD-->--POSTROUTING-->--OUT
 - nat (dst)   |           - filter      - nat (src)
               |                            |
               |                            |
              INPUT                       OUTPUT
              - filter                    - nat (dst)
               |                          - filter
               |                            |
               `----->-----[app]----->------'

–jeroen

Posted in *nix, *nix-tools, Internet, Internet protocol suite, iptables, Linux, openSuSE, Power User, Routers, SuSE Linux, TCP | Leave a Comment »

whatismylocalip alias (actually more like whataremylocalips) and some sed links

Posted by jpluimers on 2017/01/10

Getting the local IP (actually IPs, but most hosts only have a single IP):

# OS X:
alias whatismylocalip='ifconfig | sed -En '\''s/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'\'''
# Linux:
alias whatismylocalip='ip a | sed -En '\''s/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'\'''

I got them via bash – How to I get the primary IP address of the local machine on Linux and OS X? – Stack Overflow

Mac OS X and BSD have ifconfig, but most Linux distributions don’t use ifconfig any more in favour of iproute2, so you use ip a (which is shorthand for ip address show) there.

Their output is similar enough for the sed to work, though. Which surprised be because I didn’t know about the -E option (it lacks in the manual Linux page but it is in the Mac OS X one) which enables POSIX extended regular expressions. In Linux this is documented as -r, but -E also works.

I learned this through the Sed – An Introduction and Tutorial which compares the various versions of sed which also explains about the -n doing no printing.

–jeroen

Posted in *nix, *nix-tools, Apple, bash, bash, Development, Linux, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, openSuSE, OS X, OS X Leopard, OS X Lion, OS X Maverick, OS X Mountain Lion, OS X Snow Leopard, OS X Tiger, OSX Yosemite, Power User, Scripting, Software Development, SuSE Linux, Tumbleweed | Leave a Comment »

 
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