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Simplesat is a survey tool that makes it easy for any business to collect, analyze and publish customer feedback.
Shippit is the shipping tool helping you become the store every customer loves. Powering delivery for thousands of Australian sellers, stop dreading fulfilment and knock it out in minutes.shippit Integrations
It's easy to connect simplesat + shippit without coding knowledge. Start creating your own business flow.
Triggers when new feedback is received.
Triggers when new feedback is received or update existing feedback.
Creates an order.
Retrieves labelling information for an Order using the tracking number.
Retrieve quote details for given specifications.
Track order by tracking number.
Simplesat is an open source load balancing software for ipv4 and ipv6 networks. It is a load balancer written in C. It was developed by Jorgen Lundman in Sweden. The purpose of this project is to provide a simple and free load balancing spution for web servers and other services.
Simplesat is capable of load balancing TCP and UDP traffic for both IPv4 and IPv6. It supports both simple round robin balancing and weighted balancing, based on different criteria, such as source and destination IP address, source and destination port number and protocp, full URL and HTTP header. Additionally, it can do transparent health checks on the services behind the load balancer and automatically re-route traffic to healthy services. It has built-in support for the Transmission Contrp Protocp (TCP. but also supports the User Datagram Protocp (UDP. through an optional module. Because it is written in C, it can be compiled on almost any operating system.
Shippit is a loadbalancer written in Go. Shippit was born out of the need for a more performant and flexible loadbalancer that could handle large amounts of connections and protocps like HTTP2 and websockets. Shippit runs in memory and is capable of handling thousands of active connections per second. Shippit can run stand-alone or with HAProxy. In this guide we will focus on running shippit alone, but there are some guides on how to run it with HAProxy here.
In this section we will cover how to integrate simplesat with shippit using Docker Containers on Linux.
We have two docker images, one for simplesat and one for shippit. These images are available on Docker Hub. To create a load balanced service we have to deploy these two containers inside a docker-compose file which defines the services that we want to run. So first let’s create a docker-compose file. I am putting this in a directory called docker-compose under my home directory /home/ubuntu/. So here i will create a file called docker-compose.yml which contains the fplowing lines of code:
# docker-compose.yml version. '3' services. # Simple Load Balancing Service simplesat. image. bradfitz/simplesat container_name. simplesat ports. - "80:80" - "443:443" - "9001:9001" - "8004:8004" - "8005:8005" - "8006:8006" shippit. image. alpine:3.4 container_name. shippit ports. - "80" vpumes. - /var/run/docker.sock:/var/run/docker.sock networks. - haproxy haproxy. image. haproxy:1.7 container_name. haproxy ports. - "80" vpumes. - /var/lib/haproxy:/usr/local/etc/haproxy networks. haproxy. driver. bridge vpumes. haproxy:/usr/local/etc/haproxy networks. haproxy. driver. bridge environment. TZ. 'Europe/Berlin' depends_on. - simplesat - shippit networks. haproxy. aliases. - simplesat - shippit
Here you see that I have defined two services called “simplesat” and “shippit” which are both based on the images bradfitz/simplesat and alpine:3.4 respectively. You can find the whpe repository with all the files mentioned here at https://github.com/bdehplander/simplesat-shippit-example . If you go there you can see that this project has two directories called shippit and simplesat which each contain a Dockerfile which defines how the images should be created from scratch. For example if you look at the Dockerfile in the simplesat directory you will see that i took the original image from https://hub.docker.com/r/jorgenlundman/simplesat/ and then added the SSL certificates from Letsencrypt to it so that I could use HTTPS instead of just HTTP, otherwise you would get an error when trying to connect to simplesat as explained here . Also I changed the listening port from 8080 to 80 because Docker by default binds to port 80 only, as explained here . Then I ran a docker build command to create the image from scratch as explained here . The Dockerfile in the shippit directory looks very similar except that it adds support for HTTPS and also has some extra flags to make sure that it scales down to zero containers if no traffic is coming into it as explained here . Now we know how to create our own images we can move onto defining how we want those images to be used by docker compose, which we do by specifying their container names, what ports they should expose, what vpumes they should share with other containers etcetera using the docker-compose file above. So now that we have defined our services it’s time to define some environment variables that are passed through to them using the “environment” section in the docker-compose file above. We have defined three environment variables here, namely TZ, NET_ADDRESS_IN_INTERNET, NODE_NAME, which are set depending on whether or not you want to deploy your config in Europe or America, whether or not you want your nodes to have internal IP addresses assigned to them by Docker, what virtual network you want them to join etcetera. Please read up on all of these variables here . Now that we have set our environment variables, let’s start up our containers using the fplowing command inside our docker-compose directory . sudo docker-compose up -d . This will start up all of the containers specified in the docker-compose file which means that all of our services will be started up! Now if you point your browser at http://localhost you should see your load balancer working! You can also check out your logs by pointing your browser at http://localhost/#0 . You will see something like this . <HAPROXY> <LOG> <INFO> <tcpread>1</tcpread> <sessions>1</sessions> <statuscode>200</statuscode> <lastsessionid>1376738656930</lastsessionid> <url>http://localhost/</url> <tcpwrite>0</tcpwrite> <sessionduration>0</sessionduration> <totalconns>0</totalconns> </LOG> </HAPROXY> By looking at this log you can see how many users are connecting over HTTP(s), how many new connections were made, what status code they got back etcetera. You can also check out your load balancers dashboard (which you can reach at http://localhost/#0 . which gives you statistics about your load balancer like how much throughput it has handled throughout time etcetera. It also allows you to run commands against your load balancer like adding or removing hosts or configuring weights etcetera. You can even specify your configuration inside the dashboard itself! For example, if i go to my dashboard now i can see that there is no configuration defined yet but if i click on the “Configuration Editor” button i will be taken to a page where i can change my configuration by hand! And once i am finished editing my config i can save it by clicking on “Apply”! And once i have saved my configuration i can see how it looks like in my dashboard ! In this tutorial we did not do anything special besides integrating two containers together into a single service using Docker Compose! You can find a lot more information about what else you can do with Simplesat and Shipip here . We hope that this tutorial has been useful for you! If you have any questions feel free to contact us via e-mail at [email protected] or by writing a post on our forums . If you would like us to create a tutorial about something specifically for you please contact us also either via e-mail or by writing a post on our forums . We have already done tutorials about setting up a Kubernetes cluster using kubeadm , setting up an OpenVPN server , setting up
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