sudo apt-get update && sudo apt-get install -y apt-transport-https gnupg2 curl curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list sudo apt-get update sudo apt-get install -y kubectl
Check port exclusion on Windows
These ports are blocked by default if opening from WSL, so either make exception for it or open a new port, for example nodejs port 3000 cannot be open from WSL
netsh int ipv4 show excludedportrange protocol=tcp
Protocol tcp Port Exclusion Ranges
Start Port End Port
---------- --------
1051 1150
1151 1250
1338 1437
1438 1537
1538 1637
1638 1737
1766 1865
1938 2037
2038 2137
2180 2279
2280 2379
2380 2479
2480 2579
2699 2798
2830 2929
2930 3029
3030 3129
3130 3229
3230 3329
3430 3529
3530 3629
3630 3729
3757 3856
3857 3956
3957 4056
4057 4156
4157 4256
4315 4414
4466 4565
4566 4665
5357 5357
5426 5426
50000 50059 *
54235 54235
54236 54236
* - Administered port exclusions.Docker cannot start Elasticsearch
If you run Elasticsearch in docker, you’ll probably run into the same issue as mine
ERROR: [1] bootstrap checks failed
elasticsearch_1 | [1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
To fix this, just run the following command:
sudo sysctl -w vm.max_map_count=262144
Block port 8080 on Linux using iptables
iptables -A INPUT -p tcp --destination-port 8080 -j DROP iptables-save
Nginx reverse proxy for Java Springboot 8080
server {
listen 80;
server_name boot.example.com;
location / {
proxy_pass http://localhost:8080;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port $server_port;
}
}Swap size vs RAM Linux
RAM Size / Swap Size (Without Hibernation) / Swap size (With Hibernation)
256MB 256MB 512MB
512MB 512MB 1GB
1GB 1GB 2GB
2GB 1GB 3GB
3GB 2GB 5GB
4GB 2GB 6GB
6GB 2GB 8GB
8GB 3GB 11GB
12GB 3GB 15GB
16GB 4GB 20GB
24GB 5GB 29GB
32GB 6GB 38GB
64GB 8GB 72GB
128GB 11GB 139GB
Use VPSSIM to setup a new server, simply!
Vietnamese Version
curl http://get.vpssim.vn -o vpssim && sh vpssim
EngLish Version
curl http://get.vpssim.com -o vpssim && sh vpssim
How to quickly install kafka
The following steps will help install and run kafka quickly
wget https://www.apache.org/dyn/closer.cgi?path=/kafka/2.6.0/kafka_2.13-2.6.0.tgz tar -xzf kafka_2.13-2.6.0.tgz cd kafka_2.13-2.6.0 bin/zookeeper-server-start.sh config/zookeeper.properties & bin/kafka-server-start.sh config/server.properties &
How to completely remove kylin desktop from Ubuntu
I tried out Kylin desktop on Ubuntu but its performance and stability doesn’t meet my expectation, here are the command lines to completely remove this Kylin desktop including the splash screen and login screen
sudo dpkg-reconfigure lightdm # then select your previous display manager, options are: gdm3, lightdm, sddm, lxdm sudo apt-get remove ubuntukylin-desktop sudo apt-get autoremove ubuntukylin-desktop sudo apt-get purge ubuntukylin-desktop sudo apt-get autoremove --purge ubuntukylin-desktop sudo apt-get remove 'peony*' sudo apt-get remove 'ukuy*'
Install VSCode on Linux Mint using Terminal
sudo apt update sudo apt install apt-transport-https curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg sudo install -o root -g root -m 644 microsoft.gpg /etc/apt/trusted.gpg.d/ sudo apt update -y sudo apt install code -y