diff --git a/content/u/blog/how-to-sustainable-store-your-data/contents.lr b/content/u/blog/how-to-sustainable-store-your-data/contents.lr new file mode 100644 index 0000000..17a303c --- /dev/null +++ b/content/u/blog/how-to-sustainable-store-your-data/contents.lr @@ -0,0 +1,84 @@ +title: How to store your data without CO2 emission +--- +pub_date: 2019-11-20 +--- +author: ungleich +--- +twitter_handle: ungleich +--- +_hidden: no +--- +_discoverable: yes +--- +abstract: +Avoiding CO2 emissions in data storage is a daily task, too +--- +body: + +When we talk about climate change or sustainability, we usually think +about factories or cars. What we usually don't anticipate is how much +we actually contribute to the climate change by our digital behaviour. + +## How data is stored + +Your data is usually stored in one of the many data centers in the +world. To save your data, multiple disk or even multiple servers are +used to ensure that your data is safely stored. + +When you open up your mobile phone to browse pictures or to read your +email, you access the servers to retrieve your data. + +## How data centers are operated + +Most data centers use energy from the grid. This energy can be either +produced by coal, nuclear power or renewable energy. Unfortunately, +most of them don't run on renewable energy. Some do buy CO2 +certificates to compensate this fact. + +Energy in a data center is spent on one side for actually running the +servers that store your data and on cooling on the other hand. The +amount of energy used for cooling can be quite significant, too. + +So even if you are living a very green and sustainable way, you might +be contributing to CO2 emissions by using your default data storage. + +## An alternative: the sustainable way of saving data + +So how can we tackle this situation? +We have worked hard here in Switzerland to create the [Data Center +Light](https://datacenterlight.ch), a complete alternative +approach to save as much CO2 emissions, as possible. + +And this is how it is done: + +* instead of buying certificates, we use 100% renewable energy +* instead of buying energy, we produce it locally (using PV and a +local hydro power plant) +* instead of building new data centers, we modernise existing factory + halls +* instead of buying new servers, we buy 2nd hand (with new disks/ssds) + +## The sustainable data center + +With this approach, there is practically no CO2 emission from power +consumption and also the grey energy is minimised. The team of +[ungleich](https://ungleich.ch) is very proud to offer a variety of +products that are built with sustainability in mind: + +* [Sustainable Data Storage: Glarnercloud](https://ungleich.ch/en-us/cms/glarnercloud/) +* [Sustainable Virtual Private Servers: Data Center Light](https://datacenterlight.ch) +* [Sustainable IPv6 only VPS: IPv6 Only Hosting](https://ipv6onlyhosting.com/) +* [Sustainable IPv6 VPNs: IPv6VPN](https://ipv6vpn.ch) +* [Sustainable IPv6 Backup](https://ungleich.ch/en-us/cms/ipv6-backup/) + +In our opinion, we can only reach sustainability, if we take actions +in all fields of our daily life. + +In case you are looking for an affordable way of testing the products, +you should not miss the [Black IPv6 +Friday](https://swiss-crowdfunder.com/campaigns/black-ipv6-friday?locale=en), +which has *up to 50% discount on the products*. + +If you have any questions or comemnts, you can reach us at +**sustainability at ungleich.ch** or in the [ungleich +chat](https://chat.ungleich.ch). diff --git a/content/u/blog/running-world-reachable-containers-on-your-notebook-with-ipv6/contents.lr b/content/u/blog/running-world-reachable-containers-on-your-notebook-with-ipv6/contents.lr new file mode 100644 index 0000000..293af39 --- /dev/null +++ b/content/u/blog/running-world-reachable-containers-on-your-notebook-with-ipv6/contents.lr @@ -0,0 +1,74 @@ +title: How to run world reachable docker containers on your notebook +--- +pub_date: 2019-11-20 +--- +author: Nico Schottelius +--- +twitter_handle: NicoSchottelius +--- +_hidden: no +--- +_discoverable: yes +--- +abstract: +With IPv6, you can do so many things faster than before +--- +body: + +Today [Alain](https://github.com/munen/) +from [200ok](https://200ok.ch/) and me were hacking in the +[Hacking Hotel Diesbach](https://hack.digitalglarus.ch/) and found an +interesting problem: the docker containers on Alain's notebook did not +reach the Internet. + +## IPv6 only networks + +It turns out that here in the Hacking Hotel, we are in an IPv6 only +network and docker by default assigns IPv4 addresses to +containers. This obviously does not work, because there is no IPv4 +connectivity in an IPv6 only network... + +## Turning the problem into a feature + +...being in the Hacking Hotel means being inside the +*2a0a:e5c0:10::/48* network. The nice thing about IPv6 is that you +have a lot of space. With the /48 network, we have around 65'536 /64 +sub networks. But enough from the IPv6 love... + +... what this means is that we can just route a /64 network to Alain's +notebook and reconfigure his docker daemon to use IPv6 instead of +IPv4. Simply creating the **/etc/docker/daemon.json** with the +following content is enough: + +```json +{ + "ipv6": true, + "fixed-cidr-v6": "2a0a:e5c0:10:f00::/64" +} +``` + +This is great, as long as we work in the Hacking Hotel... + +## And turning it into a demo ready state + +The problem with our solution above is that the network is only routed +to his notebook, when he is in the Hacking Hotel and it will not work +outside. + +Alain also has a VPN from [IPv6VPN.ch](https://IPv6VPN.ch) that +gives him a static /48 network to his notebook. Now we selected a +/64 subnet and what does it give? + +**World wide reachable docker containers** on a notebook! + +Isn't that sweet? Given the right firewall settings, the containers +can now be reached from anywhere in the world. From a notebook, which +can be anywhere else in the world. + +## More of this + +If you like hacking with IPv6, or to reproduce the docker setup above, +you are invited to join the [IPv6 Chat](https://IPv6.chat) +or to get yourself a 50% off deal on the [Black IPv6 +Friday](https://swiss-crowdfunder.com/campaigns/black-ipv6-friday?locale=en) +campaign.