User:Plauchu Edwin
Software developer over several open source languages
Setup harness server
OS Installation
The linux distribution installed upon harness server during this document is Ubuntu yakkety.
root@yocto-desktop:~# free -m
total used free shared buff/cache available
Mem: 15945 251 12904 54 2790 15311
Swap: 16278 0 16278
root@yocto-desktop:~# fdisk -l /dev/sda
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: B15E7DED-0607-4F32-8072-8CEC8041A1A8
Device Start End Sectors Size Type
/dev/sda1 2048 1050623 1048576 512M EFI System
/dev/sda2 1050624 1920184319 1919133696 915.1G Linux filesystem
/dev/sda3 1920184320 1953523711 33339392 15.9G Linux swap
Firewall configuration
Firewall configuration is not provided, it is recommended that the testing harness is only kept in a trusted network.
To check if no firewall are configured over testing-harness, we can expect a similar output when inquiring iptables...
root@testing-harness:~# iptables -L && iptables -t nat -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain PREROUTING (policy ACCEPT) target prot opt source destination Chain INPUT (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain POSTROUTING (policy ACCEPT) target prot opt source destination
Setup Security shell
OpenSSH is a freely available version of the Secure Shell (SSH) protocol family of tools for remotely controlling, or transferring files between, computers. That's why it is required its installation upon testing-harness server.
root@testing-harness:~# aptitude install openssh-server
Setup NFS
AFT applies Network file system to share /home/tester directory where images and other files used in flashing for PC-devices within AFT net can be found.
NFS is installed ?
To check if the NFS server is installed, we can do...
root@testing-harness:~# dpkg -l | grep nfs-kernel-server
How to install NFS ?
To install NFS these are the required packages...
root@testing-harness:~# aptitude install nfs-kernel-server
The following NEW packages will be installed:
keyutils{a} libnfsidmap2{a} libtirpc1{a} nfs-common{a} nfs-kernel-server
rpcbind{a}
0 packages upgraded, 6 newly installed, 0 to remove and 459 not upgraded.
Need to get 470 kB of archives. After unpacking 1 884 kB will be used.
Do you want to continue? [Y/n/?]
Sharing /home/tester directory
root@testing-harness:~# mkdir -p /home/tester root@testing-harness:~# echo '/home/tester 192.168.1.0/24 (crossmnt,ro,root_squash,sync,no_subtree_check)' >> /etc/exports
Setup DNS cache and DHCP server for AFT net
DNSmasq provides two services, either of which can be used independently.
- DNS service
- DHCP service
A local DNS cache can speed up internet browsing because the user's applications will not need to access a domain name server when it looks up a domain name the computer has visited before.
How to install dnsmasq ?
To install dnsmasq these are the required packages...
root@testing-harness:~# aptitude install dnsmasq
The following NEW packages will be installed:
dns-root-data{a} dnsmasq dnsmasq-base{a}
0 packages upgraded, 3 newly installed, 0 to remove and 459 not upgraded.
Need to get 0 B/329 kB of archives. After unpacking 886 kB will be used.
Do you want to continue? [Y/n/?
At the sametime we have set up a simple DNS server. To test it, use your favorite DNS lookup tool pointed at localhost
root@testing-harness:~# nslookup yoctoproject.org localhost Server: localhost Address: 127.0.0.1#53 Non-authoritative answer: Name: yoctoproject.org Address: 140.211.169.56
Configure DHCP server
To enable the DHCP server of AFT net, you will need to give it a range of IP addresses to hand out. The AFT net server would hand out 92 address starting at 192.168.1.2 and ending at 192.168.1.99.
root@testing-harness:~# echo 'dhcp-range=192.168.1.2,192.168.1.99,10m' >> /etc/dnsmasq.conf
To tell dnsmasq which ethernet interface it can and cannot listen on.
root@testing-harness:~# echo 'interface=eno1' >> /etc/dnsmasq.conf
During the creation of this document the interface eno1 is the unique one connected to AFT net.
AFT and its relation with dnsmasq.leases
As of dhcp server is up and running. AFT shall utilize dhcp-server's active ip leasing information to determine device IP address of PC-devices over AFT net. By default it is found upon /var/lib/misc/dnsmasq.leases
root@testing-harness:~# cat /var/lib/misc/dnsmasq.leases 1417132679 78:c5:e5:b4:4d:07 192.168.1.99 minox-fbe390b0bb404da * 1417134678 20:54:76:e4:d8:a5 192.168.1.57 minoy-ab6e5d0a524c9c7d * ...... ....... ........ and so on...
Above a common dnsmasq.leases file.
