LAB CCP1 CMP2 - Docker Task 3 install MongoDB only needed so we know the commands for our Dockerfile but the image worked only after we added wget and gnupg2, too mongodb 3.4 was not available anymore for ubuntu focal curl -fsSL https://www.mongodb.org/static/pgp/server-4.4.asc | sudo apt-key add - echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/4.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list apt update apt install mongodb-org create Docker File # syntax=docker/dockerfile:1 FROM ubuntu:20.

LAB CCP1 CMP2 - Containers Task 1 Decided to use own VM instead of ZHAWs Cloudlab. Using same Server I have been using for microk8s. Had to install Docker: tom@microk8s:~$sudo snap install docker Task 2 Check cgroups: tree /sys/fs/cgroup/pids mount -t cgroup -o cpu none /sys/fs/cgroup/cpu #can not be mounted at the same time as mount -t cgroup -o cpu,cpuacct none sys/fs/cgroup/cpu,cpuacct mount | grep gcroup cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct) #To find the cgroup to which a process belongs, run: ps -O cgroup #Or, if you know the PID for the process, run: cat /proc/PID/cgroup Install on Ubuntu #install (on Ubuntu) sudo apt install cgroup-tools hirarchy for cpu and memory #create hirarchy for cpuset subsystem mkdir /sys/fs/cgroup/cpu/red mkdir /sys/fs/cgroup/cpu/blue mkdir /sys/fs/cgroup/memory/lab1 mount -t cgroup -o cpu red /sys/fs/cgroup/cpu/red mount -t cgroup -o cpu blue /sys/fs/cgroup/cpu/blue #don't quite understand why this should be necessary.

LAB Part 1 Verify environment ubuntu@source:~$ lsmod | grep kvm kvm_intel 180224 0 kvm 561152 1 kvm_intel irqbypass 16384 1 kvm ubuntu@source:~$ sudo virsh net-list Name State Autostart Persistent ---------------------------------------------------------- default active yes yes ubuntu@source:~$ sudo virsh net-dumpxml default <network> <name>default</name> <uuid>652aa9c9-84a8-4765-be6b-47437a87d0d6</uuid> <forward mode='nat'> <nat> <port start='1024' end='65535'/> </nat> </forward> <bridge name='virbr0' stp='on' delay='0'/> <mac address='52:54:00:05:3b:c8'/> <ip address='192.168.122.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.122.2' end='192.168.122.254'/> </dhcp> </ip> </network> my_vm.xml ubuntu@source:~$ more my_vm.xml <domain type='kvm'> <name>my_vm</name> <memory>512000</memory> <vcpu placement='static' current='1'>4</vcpu> <os> <type>hvm</type> <boot dev='cdrom'/> <boot dev='hd'/> <bootmenu enable='yes' timeout='10000'/> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type="file" device="disk"> <driver name="qemu" type="qcow2"/> <source file="/home/ubuntu/my_vm.

LAB Goal of this LAB is to deploy a small Todo App on microk8s. The App consists of three components: Redis DB node JS Rest API node JS based frontend All images can be found on Docker Hub. First step is a deployment on ZHAWs Could LAB. For how to run your own microk8s instance check out the end of this post. run this shellscript to fetch and run all yaml files needed: (run at your own risk)

Content: Basic Concepts Motivation and Value Proposition Definition of Cloud Computing Examples and Swiss Perspective Considerations Better spend OPEX than CAPEX CAPEX+OPEX=TCO (Total Cost of Ownership) Definition of Cloud Computing Cloud Computing Principals On demand self service The consumer can provision computing capabilties, without requiring human interaction on service provider side. Broad Network Access Capabilities are available over the network and access through standard mechanisms that promote use by heterogeneous thin or thick client platfomrs(e.

History Lisp Machines with Emacs Clojure Is a dialect of Lisp lisp-journey.gitlab.io Hirachical Structures JavaScript vs. Lisp [ "copy", { "todir" : "../new/dir" "fileset" : [ { "dir" : "src_dir" } ] } ] (copy (todir "../new/dir") (fileset (dir "src_dir")))i Functions cadr car cdr ’ everything after not evaluated specialities of Common Lisp Symbols can have multiple bindings (set '= 42) (symbol-function '=) (symbol-value '=) (symbol-plist '=) (= = =) Macros evaluation of arguments is not always desired

using encryption in backend if you want to use encryption between proxy and backend there is a few things to watch out for. Both hosts need valid SSL certificate either copy the letsencrypt cert to both servers from time to time. or use your own CA in the backend and only run letsencrypts certbot on the proxy. on the proxy you could server .well-known locally so certbots verification process works.

Install Certbot sudo apt install snapd sudo snap install core; sudo snap refresh core remove preinstalled certbot versions sudo apt-get remove certbot install certbo sudo snap install --classic certbot prepare Certbot command sudo ln -s /snap/bin/certbot /usr/bin/certbot Troubleshooting certbot doesn’t let you choose domain nginx server proprely configured? server_name = srv10.kitetrail.net blog.kitetrail.net;

Debians interface config is in: /etc/network/interfaces # The primary network interface auto ens192 allow-hotplug ens192 iface ens192 inet static address 192.168.1.140/24 gateway 192.168.1.254 # This is an autoconfigured IPv6 interface iface ens192 inet6 auto restart interface: sudo ifdown ens192 sudo ifup ens192 for bigger changes use: sudo systemctl restart networking

Lisp Part One Using SBCL (Steel Bank common Lisp) on Debian simple stuff * (quote (was ist den hier los)) (WAS IST DEN HIER LOS) ;;Das ist einen Liste * '(was ist den hier los) (WAS IST DEN HIER LOS) ;;Auch eine Liste * '(was ist (denn hier) los) ;;Verschachtelte Liste (WAS IST (DENN HIER) LOS) * '(die "Antwort" ist 42) (DIE "Antwort" IST 42) * '(+ 1 2 3 4 5) (+ 1 2 3 4 5) ;;Liste * (+ 1 2 3 4 5) ;;Addition 15 * (defun dbl (n) (* 2 n) DBL Usefull Stuff * (mapcar 'dbl '(1 2 3 4)) ;;applies our function to a list (2 4 6 8) (set 'ding '(auto (marke "VW") (baujahr 1981) (gewicht (894 kg)))) (AUTO (MARKE "VW") (BAUJAHR 1981) (GEWICHT (894 KG))) (mapcar 'second (rest ding)) ;;AUTO is not of type list, that's why we remove it with rest ("VW" 1981 (894 KG)) ;;gives the 2nd element of each list entry