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| Software developer over several open source languages
| | [[AFT installation]] |
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| == A simplest working system ==
| | [[Manteiner python3-numpy]] |
| === The AFT net ===
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| The testable devices are put in an isolated network (AKA AFT net). ''''' Having in mine that Remote power switch is over AFT net too with ip 192.168.1.100 '''''
| | [[Arduino Single power control unit]] |
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| {| class="wikitable"
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| |+Line color code
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| |-
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| |Blue
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| |AC cable
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| |-
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| |Orange
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| |USB cable
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| |-
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| |Green
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| |Ethernet cable
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| |-
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| |Black
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| |Not a cable
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| |}
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| [[File:AFT.png]] | |
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| === Recording support image on USB stick ===
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| A Debian operative system is used as support image.
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| <pre>
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| [354629.272050] usb 3-6: Product: ADATA USB Flash Drive
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| [354629.272051] usb 3-6: Manufacturer: ADATA
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| [354629.272052] usb 3-6: SerialNumber: 25C1008050080204
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| [354629.272594] usb-storage 3-6:1.0: USB Mass Storage device detected
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| [354629.272701] scsi host7: usb-storage 3-6:1.0
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| [354630.271607] scsi 7:0:0:0: Direct-Access ADATA USB Flash Drive 1.00 PQ: 0 ANSI: 6
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| [354630.271921] sd 7:0:0:0: Attached scsi generic sg1 type 0
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| [354630.272050] sd 7:0:0:0: [sdb] 30310400 512-byte logical blocks: (15.5 GB/14.5 GiB)
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| [354630.272189] sd 7:0:0:0: [sdb] Write Protect is off
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| [354630.272192] sd 7:0:0:0: [sdb] Mode Sense: 23 00 00 00
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| [354630.272329] sd 7:0:0:0: [sdb] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
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| [354630.278200] sdb: sdb1 sdb2 sdb3
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| [354630.279114] sd 7:0:0:0: [sdb] Attached SCSI removable disk
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| </pre>
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| <pre>
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| wget -qO- BASE_SUPPORT_IMAGES_URL/minnowUSB.image.tar.gz | gunzip | tar -xOvf - | dd of=/dev/sdb ; sync
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| </pre>
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| === Setup harness server ===
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| ==== OS Installation ====
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| The Linux distribution installed upon harness server during the creation of this document was Ubuntu yakkety.
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| ===== Important facts upon installation =====
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| During Installation process of Ubuntu It'll be requested the creation of a user, please create the user with the name '''''tester'''''. Additionally the computer name will have to be '''''testing-harness'''''.
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| When installation has finished. The 'sudo group' has to be enabled as passwordless upon file '/etc/sudoers'.
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| <pre>
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| # Allow members of group sudo to execute any command
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| %sudo ALL=(ALL) NOPASSWD: ALL
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| </pre>
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| It is important to denote that user tester has been set as part of 'sudo group' by the default Ubuntu installation.
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| '''''With user tester is going to be executed the overall of automated testing'''''.
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| ===== Ram and Disk distribution =====
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| The Ram and Disk details this harness server during the creation of this document were:
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| <pre>
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| root@testing-harness:~# free -m
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| total used free shared buff/cache available
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| Mem: 15945 251 12904 54 2790 15311
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| Swap: 16278 0 16278
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| root@testing-harness:~# fdisk -l /dev/sda
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| Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
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| Units: sectors of 1 * 512 = 512 bytes
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| Sector size (logical/physical): 512 bytes / 4096 bytes
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| I/O size (minimum/optimal): 4096 bytes / 4096 bytes
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| Disklabel type: gpt
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| Disk identifier: B15E7DED-0607-4F32-8072-8CEC8041A1A8
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| Device Start End Sectors Size Type
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| /dev/sda1 2048 1050623 1048576 512M EFI System
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| /dev/sda2 1050624 1920184319 1919133696 915.1G Linux filesystem
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| /dev/sda3 1920184320 1953523711 33339392 15.9G Linux swap
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| root@testing-harness:~# df -h
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| Filesystem Size Used Avail Use% Mounted on
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| udev 7.8G 0 7.8G 0% /dev
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| tmpfs 1.6G 9.3M 1.6G 1% /run
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| /dev/sda2 901G 39G 817G 5% /
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| tmpfs 7.8G 156K 7.8G 1% /dev/shm
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| tmpfs 5.0M 4.0K 5.0M 1% /run/lock
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| tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
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| /dev/sda1 511M 3.4M 508M 1% /boot/efi
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| tmpfs 1.6G 44K 1.6G 1% /run/user/111
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| tmpfs 1.6G 0 1.6G 0% /run/user/1000
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| </pre>
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| ==== Firewall configuration ====
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| Firewall configuration is not provided, it is recommended that the testing harness is only kept in a trusted network.
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| To check if no firewall are configured over testing-harness, we can expect a similar output when inquiring iptables...
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| <pre>
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| root@testing-harness:~# iptables -L && iptables -t nat -L
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| Chain INPUT (policy ACCEPT)
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| target prot opt source destination
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| Chain FORWARD (policy ACCEPT)
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| target prot opt source destination
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| Chain OUTPUT (policy ACCEPT)
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| target prot opt source destination
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| Chain PREROUTING (policy ACCEPT)
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| target prot opt source destination
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| Chain INPUT (policy ACCEPT)
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| target prot opt source destination
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| Chain OUTPUT (policy ACCEPT)
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| target prot opt source destination
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| Chain POSTROUTING (policy ACCEPT)
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| target prot opt source destination
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| </pre>
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| ==== Setup Security shell ====
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| 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.
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| <pre>
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| root@testing-harness:~# aptitude install openssh-server
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| </pre>
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| ==== Setup NFS ====
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| 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.
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| ===== NFS is installed ? =====
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| To check if the NFS server is installed, we can do...
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| <pre>
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| root@testing-harness:~# dpkg -l | grep nfs-kernel-server
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| </pre>
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| ===== How to install NFS ? =====
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| To install NFS these are the required packages...
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| <pre>
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| root@testing-harness:~# aptitude install nfs-kernel-server
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| The following NEW packages will be installed:
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| keyutils{a} libnfsidmap2{a} libtirpc1{a} nfs-common{a} nfs-kernel-server
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| rpcbind{a}
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| 0 packages upgraded, 6 newly installed, 0 to remove and 459 not upgraded.
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| Need to get 470 kB of archives. After unpacking 1 884 kB will be used.
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| Do you want to continue? [Y/n/?]
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| </pre>
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| ===== Sharing /home/tester directory =====
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| The tester’s home will be set as shared directory
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| <pre>
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| root@testing-harness:~# cd /etc
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| root@testing-harness:~# echo '/home/tester 192.168.1.0/24 (crossmnt,ro,root_squash,sync,no_subtree_check)' >> exports
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| </pre>
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| ==== Setup DNS cache and DHCP server for AFT net ====
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| DNSmasq provides two services, either of which can be used independently.
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| # DNS service
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| # DHCP service
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| 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.
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| ===== How to install dnsmasq ? =====
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| To install dnsmasq these are the required packages...
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| <pre>
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| root@testing-harness:~# aptitude install dnsmasq
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| The following NEW packages will be installed:
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| dns-root-data{a} dnsmasq dnsmasq-base{a}
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| 0 packages upgraded, 3 newly installed, 0 to remove and 459 not upgraded.
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| Need to get 0 B/329 kB of archives. After unpacking 886 kB will be used.
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| Do you want to continue? [Y/n/?
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| </pre>
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| At the sametime we have set up a simple DNS server. To test it, use your favorite DNS lookup tool pointed at localhost
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| <pre>
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| root@testing-harness:~# nslookup yoctoproject.org localhost
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| Server: localhost
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| Address: 127.0.0.1#53
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| Non-authoritative answer:
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| Name: yoctoproject.org
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| Address: 140.211.169.56
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| </pre>
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| ===== Configure DHCP server =====
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| 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.
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| <pre>
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| root@testing-harness:~# echo 'dhcp-range=192.168.1.2,192.168.1.99,10m' >> /etc/dnsmasq.conf
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| </pre>
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| To tell dnsmasq which ethernet interface it can and cannot listen on.
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| <pre>
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| root@testing-harness:~# echo 'interface=eno1' >> /etc/dnsmasq.conf
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| </pre>
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| During the creation of this document the interface eno1 is the unique one connected to AFT net.
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| ===== AFT and its relation with dnsmasq.leases =====
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| 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
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| <pre>
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| root@testing-harness:~# cat /var/lib/misc/dnsmasq.leases
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| 1417132679 78:c5:e5:b4:4d:07 192.168.1.99 minox-fbe390b0bb404da *
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| 1417134678 20:54:76:e4:d8:a5 192.168.1.57 minoy-ab6e5d0a524c9c7d *
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| ......
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| .......
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| ........ and so on...
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| </pre>
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| Above a common dnsmasq.leases file.
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