Jenkins does not start on macOS 10.12 (Sierra)

Question

After upgrading my macOS to Sierra, when I start Jenkins using launchctl load I cannot connect to localhost:8080. If I call launchctl load again, I see response \"service alread

Answer 1

Seems that Sierra changed the permission of Jenkis folder. So the best solution is:
1. Add execute permissions to org.jenkins-ci.plist:
sudo chmod +x /Library/LaunchDaemons/org.jenkins-ci.plist
2. Set jenkins as the owner of /var/log/jenkins:
sudo chown jenkins /var/log/jenkins
3. Start Jenkins:
sudo launchctl load /Library/LaunchDaemons/org.jenkins-ci.plist