Debian 9 (Stretch) OS install

amd64 VDS install from media

Virtual server setup

Install minimal system from netinst CD (attached when VDS is created on phoenix) Config options:

  • In the "role" selection select "ssh server" and "system utilities" only.
  • The whole disc default partitioning is fine
  • The base user the install insists on creating should be the netsurf user.
  • Boot loader in MBR

Once installed:

  • install sudo package and add netsurf user to sudo group
  • edit /etc/default/grub

GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,115200n8"

# update-grub2

arm64 VDS install

?ARM64 virtual server setup

Once installed:

  • create netsurf user
  • install sudo package and add netsurf user to sudo group
  • edit /etc/inittab comment pty 3 through 6 and uncomment serial T0
  • enable backports

echo "deb http://http.debian.net/debian stretch-backports main" > /etc/apt/sources.list.d/backports.list
apt-get update

  • install updated kernel

apt-get install linux-image-4.3.0-0.bpo.1-arm64

Scaleway node

Scaleway servers are currently used for ARM64 and armhf workers. Although we have self-hosted hardware for both of these node types these nodes are conveniant alternatives. For AMD64 workers just create zero cost instances on phoenix!

Use the scaleway dashboard to create a server of the correct architecture and Debian jessie image (it has to be upgraded currently) a minimal 50G root volume is plenty of storage.

once started ssh to the image using the appropriate ssh key

ssh -i .ssh/keys/id_rsa.netsurf root@1.2.3.4

edit \etc\hostname to contain nsciworker17

edit \etc\hosts to set loopback name resolution

127.0.1.1       nsciworker17
127.0.0.1       localhost
::1             localhost ip6-localhost ip6-loopback
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters

192.168.211.1   ci.netsurf-browser.org
93.93.129.191   vpn.netsurf-browser.org

adduser netsurf

ensure netsurf user has ssh key installed

edit /etc/group to add netsurf to sudo group

edit /etc/apt/sources/list to be stretch

# apt-get update
# apt-get dist-upgrade
# apt-get clean
# halt

use dashboard power toggle to force a hard reboot

login as netsurf and use sudo -i to get root terminal

something in the update appears to break journalctl

# mkdir -p /var/log/journal
# rm /etc/machine-id
# systemd-machine-id-setup
# systemd-tmpfiles --create --prefix /var/log/journal
# service systemd-journald restart

edit /etc/ssh/sshd_config to disable password login. ensure you can login using certificates before you do this!

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication no

# apt-get install fail2ban

edit /etc/fail2ban/jail.local

[DEFAULT]

# "bantime" is the number of seconds that a host is banned.
bantime  = 1200

# A host is banned if it has generated "maxretry" during the last "findtime"
# seconds.
findtime = 1200
maxretry = 3

[ssh]

enabled  = true
port     = ssh
filter   = sshd
logpath  = /var/log/auth.log
maxretry = 2

# apt-get install openvpn

create /etc/openvpn/netsurf.conf

client
dev tap_netsurf
proto tcp
remote vpn.netsurf-browser.org 1194
resolv-retry infinite
nobind
user nobody
group nogroup
persist-key
persist-tun
lladdr 0E:00:00:00:03:17

ca      /etc/openvpn/netsurf-keys/ca.crt
cert    /etc/openvpn/netsurf-keys/ciworker17.crt
key     /etc/openvpn/netsurf-keys/ciworker17.key

ns-cert-type server

comp-lzo

# Set log file verbosity.
verb 3

script-security 2
up /etc/openvpn/netsurf-up
down /etc/openvpn/netsurf-down

create /etc/openvpn/netsurf-up

#!/bin/sh

ifup tap_netsurf

create /etc/openvpn/netsurf-down

#!/bin/sh

ifdown tap_netsurf

edit /etc/network/interfaces and add

# netsurf
auto tap_netsurf
iface tap_netsurf inet dhcp

mkdir /etc/openvpn/netsurf-keys

copy openvpn keys from master node into /etc/openvpn/netsurf-keys

edit /etc/default/openvpn to have

AUTOSTART="netsurf"

reload config and restart openvpn

# systemctl daemon-reload
# service restart openvpn
# systemctl status openvpn@netsurf.service

Banana Pi

This system is a dual core ARMv7 allwinner using the armhf ABI

Used the install SD media from armbian

  • unzip and write raw file to full size SD card.

Once installed:

  • first login as root:1234 which will need to be immediately changed
  • use the nand-sata-install script and moved the install to sata disc. The drive needs to be a clean drive with a recognised partition table (DOS or GPT) and a single partition where the OS will be installed.
  • edit /etc/init.d/armhwinfo to remove the toilet dynamic MOTD banner
  • (re)move /etc/bash.bashrc.custom as it issues a lot of unnecessary commands
  • adduser netsurf
  • change /etc/apt/sources.list to point at a local mirror
  • apt-get update
  • apt-get upgrade
  • install sudo package and add netsurf user to sudo group

Raspberry Pi 2

This system is a quad core ARMv7 Broadcom using the armhf ABI

Used install media from ?http://sjoerd.luon.net/posts/2015/02/debian-stretch-on-rpi2/ Sjored

  • unpack onto micro SD card with bmap-tools

On any debian-based linux type "sudo apt-get install bmap-tools" and install it.
Then type "sudo bmaptool copy --nobmap 'yourlocation/stretch-rpi2.img' /dev/sdx" (Change yourlocation to the location of the .img file and sdx for the letter where the SD is mounted, if you don't know it type "sudo fdisk -l" and look for it).

Once installed:

  • first login as root:debian which will need to be immediately changed
  • Prevent package FLASH-KERNEL UPDATING FROM OFFICIAL REPO WITH APT PINNING

'touch /etc/apt/preferences.d/flash-kernel' create a new file
'vi /etc/apt/preferences.d/flash-kernel' edit it an add the following lines to it:
Package: flash-kernel
Pin: origin repositories.collabora.co.uk
Pin-Priority: 1000
'apt-cache policy flash-kernel' check if the package is pinned

  • change /etc/apt/sources.list to point at a local mirror
  • apt-get update
  • apt-get upgrade
  • adduser netsurf
  • install sudo package and add netsurf user to sudo group

Orange Pi PC

This system is a quad core ARMv7 allwinner H3 using the armhf ABI

Use armbian

  • unpack image and write to micro SD card and configure as per banana pi instructions

Once installed:

  • first login as root:1234 which will need to be immediately changed

* superuser available via sudo -i

  • change /etc/apt/sources.list to point at a local mirror
  • apt-get update
  • apt-get upgrade
  • alter orangepi user to netsurf by editing

/etc/group (dont forget to replace orangepi on the sudo group)
/etc/passwd
/etc/shadow
mv /home/orangepi /home/netsurf

Packaged CI worker install

Do a base OS install

The recommended hostname for CI workers is "nsciworker17" this allows us to clearly identify CI worker nodes. Note historically we have used "cislave1" which has been objected to by several users. See changing hostname on how to achive this.

On master jenkins use "manage nodes" to create new node. Ensure "remote fs root" is set to /var/lib/jenkins add variable JENKINS_HOME set to /var/lib/jenkins

Note: replace arm64 with architecture name as required (armhf etc.)

When configuring a scaleway instance the "Launch method" should be set to "start and stop this node on-demand" with the "Start script" set to perl /usr/bin/pscw.pl start netsurf-ciworker17 and "Stop script" set to perl /usr/bin/pscw.pl stop netsurf-ciworker17. The Availability set to "Take this slave on-line when in demand and off-line when idle" and "in demand delay" set to 0 and "idle delay" set to 15. This will mean the node is turned off and not charged for when idle.

As superuser:

  • create jenkins user

adduser --system --group --home /var/lib/jenkins/ --disabled-login jenkins

  • Add CI server repo to slave apt sources

echo "deb http://ci.netsurf-browser.org/debian/ stretch/amd64/" >> /etc/apt/sources.list.d/netsurf-browser.list

  • update repos

apt-get update

  • install ns-ci-worker package. accept the large package list and the unsigned package install for gcovr and ns-ci-slave

apt-get install ns-ci-worker

  • edit /etc/default/ns-ci-worker to set the correct url and secret parameters
  • ensure /opt is setup correctly to allow toolchains to be built on the node

mkdir -p /opt/netsurf
chown jenkins:jenkins /opt/netsurf

  • become jenkins user

su -s/bin/bash - jenkins

  • create ssh keypair (accept defaults - no password)

ssh-keygen -t rsa -C "netsurf@nsciworker17.netsurf-browser.org"

  • copy .ssh/id_rsa.pub from worker to jenkins master node and append to /home/netsurf/.ssh/authorized_keys

scp /home/jenkins/.ssh/id_rsa.pub netsurf@ci.netsurf-browser.org:nsciworker17_id_rsa.pub

  • exit jenkins user shell
  • start CI worker daemon

/etc/init.d/ns-ci-worker start

Pbuilder setup

This allows a worker to build Debian packages. The worker should be installed as a normal CI worker node and then:

as superuser on node:

# apt-get install pbuilder
# addgroup pbuilder
# addgroup jenkins pbuilder

create /etc/sudoers.d/pbuilder

jenkins  ALL = NOPASSWD:/usr/sbin/pbuilder

visudo and alter Defaults

Defaults        env_reset,env_keep="DIST ARCH"

replace /etc/pbuilderrc

# this is your configuration file for pbuilder.
# the file in /usr/share/pbuilder/pbuilderrc is the default template.
# /etc/pbuilderrc is the one meant for overwriting defaults in
# the default template
#
# read pbuilderrc.5 document for notes on specific options.

# List of Debian suites.
DEBIAN_SUITES=("sid", "stretch", "jessie", "wheezy", "squeeze")

# List of Ubuntu suites.
UBUNTU_SUITES=("vivid" "utopic" "trusty" "saucy" "raring" "quantal" "precise" "oneiric" "natty" "lucid" "hardy")

# Mirrors to use. Update these to your preferred mirror.
DEBIAN_MIRROR="ftp.uk.debian.org"
UBUNTU_MIRROR="mirrors.kernel.org"

# set a default distribution if none is used.
: ${DIST:="$(lsb_release --short --codename)"}

# set the architecture to the host architecture if none set.
: ${ARCH:="$(dpkg --print-architecture)"}

NAME="$DIST"
if [ -n "${ARCH}" ]; then
    NAME="$NAME-$ARCH"
    DEBOOTSTRAPOPTS=("--arch" "$ARCH" "${DEBOOTSTRAPOPTS[@]}")
fi
BASETGZ="/var/cache/pbuilder/$NAME-base.tgz"
DISTRIBUTION="$DIST"
BUILDRESULT="/var/cache/pbuilder/$NAME/result/"
APTCACHE="/var/cache/pbuilder/$NAME/aptcache/"
BUILDPLACE="/var/cache/pbuilder/build/"

if $(echo ${DEBIAN_SUITES[@]} | grep -q $DIST); then
    # Debian configuration
    MIRRORSITE="http://$DEBIAN_MIRROR/debian/"
    COMPONENTS="main contrib non-free"
    if $(echo "$STABLE_CODENAME stable" | grep -q $DIST); then
        OTHERMIRROR="$OTHERMIRROR | deb $MIRRORSITE $STABLE_BACKPORTS_SUITE $COMPONENTS"
    fi
elif $(echo ${UBUNTU_SUITES[@]} | grep -q $DIST); then
    # Ubuntu configuration
    MIRRORSITE="http://$UBUNTU_MIRROR/ubuntu/"
    COMPONENTS="main restricted universe multiverse"
else
    echo "Unknown distribution: $DIST"
    exit 1
fi

The architecture is assumed to be the native one from

dpkg --print-architecture

This can be set by passing ARCH to pbuilder (useful for i386 maybe?)

for each distribution this node will build for:

create pbuilder result directory and set ownership permissions

# mkdir -p /var/cache/pbuilder/stretch-armhf/result
# chown root:pbuilder /var/cache/pbuilder/stretch-armhf/result
# chmod g+w /var/cache/pbuilder/stretch-armhf/result

become jenkins user

su -s/bin/bash - jenkins

create pbuilder base for distribution

sudo DIST=stretch pbuilder create

if desired additional packages and config can be made to the base with

sudo DIST=stretch pbuilder login --save-after-login

distcc worker node

Do a basic OS install but *not* a CI worker setup.

A recommended hostname for distcc worker is something like "cicpu0" this allows us to use systems as processing node for other purposes than just distcc in future. See debians changing hostname on how to achive this.

The Netsurf repository has necessary updated packages in it and can be accessed by doing the following:

Add CI server repo to worker apt sources

echo "deb http://ci.netsurf-browser.org/builds/debian/ stretch/amd64/" >> /etc/apt/sources.list

update repos

apt-get update

use apt to install these packages:

build-essential
gcc
clang
distcc

edit /etc/default/distcc

STARTDISTCC="true"
ALLOWEDNETS="192.168.211.0/24"
LISTEN="0.0.0.0"
JOBS="8"

start the service

service distcc start

ensure the client has hosts set to use the new worker

Manual CI worker install

Caution these instructions may not be up to date.

required packages

The Netsurf repository has necessary updated packages in it and can be accessed by doing the following:

  • Add CI server repo to slave apt sources

echo "deb http://ci.netsurf-browser.org/builds/debian/ stretch/amd64/" >> /etc/apt/sources.list

  • update repos

apt-get update

use apt to install these packages:

openjdk-7-jre-headless 
screen 
build-essential
ccache
clang
git
pkg-config
check
doxygen
libjson0-dev (from our repo - needs bugfixes http://ci.netsurf-browser.org/builds/debian/)
libexpat1-dev
libxml-perl
libxml-xpath-perl
lcov
gcovr (from our repo)
gperf
flex
bison
libpng-dev
libjpeg-dev
libmozjs185-dev
libglib2.0-dev
libcurl4-openssl-dev
liblcms1-dev
libxml2-dev
librsvg2-dev
libmng-dev
libgtk2.0-dev
libmozjs-dev

config

#!/bin/bash

java -Djava.awt.headless=true -jar slave.jar -jnlpUrl http://ci.netsurf-browser.org/jenkins/computer/chimera/slave-agent.jnlp -secret 0123456789abcdef01234567890abcdef

    • run jenkins-slave.sh
    • create new screen tab
    • create ssh keypair (accept defaults - no password)

ssh-keygen -t rsa -C "netsurf@cislave0.netsurf-browser.org"

    • copy .ssh/id_rsa.pub from slave to jenkins master node and append to /home/netsurf/.ssh/authorized_keys

scp ci.netsurf-browser.org:.ssh/id_rsa.pub .id_rsa.pub
cat id_rsa.pub >> .ssh/authorized_keys

    • copy .ssh/id_rsa.pub from master node to slave and append to /home/netsurf/.ssh/authorized_keys
    • create reverse-ssh.sh (change tunnel port number!)

#!/bin/sh

ssh -R 22224:localhost:22 netsurf@ci.netsurf-browser.org 'bash -c "while true; do echo .; sleep 60; done"'

    • run reverse-ssh.sh
    • on the master create a shell script to use the ssh tunnel connection, thus firewalls etc are moot as long as the slave can connect to the master

ssh netsurf@localhost -p 22223