kopwei

DNS issues resolving after upgrade to Ventura

After upgrade to Ventura I found that I can no longer use the local host name (e.g. pi, pi4main) to access the equipent in LAN.

Symptom

The following command works:

nslookup 

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Keybase proof

I hereby claim:

• I am kopwei on github.
• I am kopkop (https://keybase.io/kopkop) on keybase.
• I have a public key whose fingerprint is 80BF 5466 AC41 70A6 CB15 083C 7B97 B899 5BDE DA95

To claim this, I am signing this object:

kopwei

Deploy K3s and Rancher on Raspberry Pi 4 cluster

Today I tried to setup a small Kubernetes cluster on top of 3 Raspberry Pi 4 (4GB Memory). Here is the steps to install the cluster.

Preparation

I have 3 Raspberry Pi 4 stacked with PoE headers and connected to a PoE switch at home. The are connected to Internet through a home router. All Pis are equipped with a 64GB Samsung SDXC card flushed with Ubuntu 20.04 image.

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This trying to explain how to enable monitoring on k3s/arm64

Deployments

prometheus-operator-monitoring-operator

• coreos-configmap-reload
• coreos-prometheus-operator

grafana-cluster-monitoring

• nginx

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This is a note for installing SpaceVIM on Ubuntu

I installed SpaceVIM on Ubuntu Bionic today but the file-type icons are shown in strange Chinese characters rather than the correct icons.

Check 1: Terminal Encoding

Set terminal profile encoding to UTF-8

Check 2: VIM Encoding

Set VIM encoding to UTF-8. Check the encoding via following command in VIM

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Preparation

• System ubuntu18.04.2 desktop
• Internet interface name eth0 with dhcp.

Steps

1. Disable network-manager:

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#!/bin/bash

set -e
INTERNET_INF=$1
SUB_INF=$2

if [ -z "$INTERNET_INF" ] || [ -z "$SUB_INF" ]; then
    echo "Please enter 2 interfaces' names"
    exit 1
fi

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Gateway set up

The following example will focus on the most common gateway setup: an Ubuntu computer with two wired network adapters (eth0 and eth1) hosting ICS to a static internal network configured for the 192.168.0.x subnet.

For this example, eth0 is used to represent the network card connected to the Internet, and eth1 represents the network card connected to a client PC. You can replace eth0 and eth1 as needed for your situation. Also, any private IP subnet can be used for the internal network IP addresses.

In summary:

eth0 = the network adapter with internet (external or WAN).
eth1 = the network adapter to which a second computer is attached (internal or LAN).

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# Install Latest Git on Ubuntu:

sudo add-apt-repository ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git

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su -c "Your command right here" -s /bin/sh otheruser