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network_simulation_with_k8s-topo_on_raspi_cluster [2023/09/09 01:11] – qlyoungnetwork_simulation_with_k8s-topo_on_raspi_cluster [2024/01/06 05:24] (current) – tags qlyoung
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 Here's a picture of the cluster: Here's a picture of the cluster:
  
-![Raspberry Pi 3B+ cluster](/assets/images/picluster.jpg)+{{:picluster.jpg?600|Raspberry Pi 3B+ cluster}}
  
 If you're curious, the backplane is a [[https://bitscope.com/product/blade/?p=about|Bitscope Blade]]. I'd like to write another post on how to set up and provision such a cluster when I find the time. If you're curious, the backplane is a [[https://bitscope.com/product/blade/?p=about|Bitscope Blade]]. I'd like to write another post on how to set up and provision such a cluster when I find the time.
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 this 40-node random topology: this 40-node random topology:
  
-![Undirected graph depicting example network topology](/assets/images/randomtopo.png)+{{:randomtopo.png?600|Undirected graph depicting example network topology}}
  
 Overall it's a capable, compact setup for experimenting with software routers. In my role as a maintainer for FRR it serves particularly well as a testbed for that project, especially for development related to our [[https://hub.docker.com|Docker images]]. Overall it's a capable, compact setup for experimenting with software routers. In my role as a maintainer for FRR it serves particularly well as a testbed for that project, especially for development related to our [[https://hub.docker.com|Docker images]].
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   * Docker, on the master node:   * Docker, on the master node:
  
-<code>+<code bash>
 apt install docker.io apt install docker.io
 </code> </code>
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 Also, before we go any further, add this line to the end of your ''.bashrc'': Also, before we go any further, add this line to the end of your ''.bashrc'':
  
-<code>+<code bash>
 export KUBECONFIG=/etc/rancher/k3s/k3s.yaml export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
 </code> </code>
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 References: References:
-  * <https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/> +  * https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account 
-  * <https://rancher.com/docs/rancher/v2.x/en/installation/options/helm2/helm-init/>+  * https://rancher.com/docs/rancher/v2.x/en/installation/options/helm2/helm-init
  
 Now we start getting to the x86 monoculture stuff. Now we start getting to the x86 monoculture stuff.
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 Log into one of the pods and have a look around: Log into one of the pods and have a look around:
-<code bash>+<code>
 root@clusterpi-69 # kubectl exec -it pod/frr-192-0-2-2 -- sh root@clusterpi-69 # kubectl exec -it pod/frr-192-0-2-2 -- sh
-/ # ip addr+# ip addr
 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
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     inet6 fe80::2caf:91ff:fed4:c1b0/64 scope link     inet6 fe80::2caf:91ff:fed4:c1b0/64 scope link
        valid_lft forever preferred_lft forever        valid_lft forever preferred_lft forever
-/ # vtysh+# vtysh
 % Can't open configuration file /etc/frr/vtysh.conf due to 'No such file or directory'. % Can't open configuration file /etc/frr/vtysh.conf due to 'No such file or directory'.
  
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 I very much dislike making this setup depending on my personal GitHub forks and DockerHub registry, but doing so was the only way I could finish this project in a reasonable time frame. I very much dislike making this setup depending on my personal GitHub forks and DockerHub registry, but doing so was the only way I could finish this project in a reasonable time frame.
 +
 +{{tag>from_blog technology networking}}
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