Install blynk server on ubuntu
1. Add repository and install java
sudo apt-add-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
2. Download and install blynk
mkdir blynk
cd /blynk
wget https://github.com/blynkkk/blynk-server/releases/download/v0.41.0/server-0.41.0-java8.jar
3. Forward port for http/https
sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
sudo iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 9443
sudo iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 9443
4. Allow firewall
ufw allow 9443 //port for blynk app. on android use to connect.
ufw allow 8080 //port for coding on esp32 use to connect.
5. Run blynk server
cd /blynk
java -jar server-0.41.0-java8.jar -dataFolder ./data
user : admin@blynk.cc
pass : admin
java -jar server-0.41.0-java8.jar -dataFolder ./data
6. Login to manage web admin
https://your-ip/adminuser : admin@blynk.cc
pass : admin
Refer : https://github.com/blynkkk/blynk-server#app-and-sketch-changes
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