Jenkins failed to start in linux

Question

go to run jenkins after doing an upgrade, and get the following:

start jenkins
start: Job failed to start

That\'s it...nothing shows up in jenk

Answer 1

Ubuntu 18.04 LTS use Java 9 as default java

Jenkins 2.107.2 still use Java 8

[Solution]

Install Java 8 before install Jenkins

sudo add-apt-repository ppa:webupd8team/java
sudo apt install oracle-java8-installer
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo apt-add-repository "deb https://pkg.jenkins.io/debian-stable binary/"
sudo apt install jenkins

See https://stackoverflow.com/a/49937744/900684