We are unbale to install Jenkins on Ubuntu 16.04 .
This Ubuntu is installed on VirtualBox
apt-get install jenkins
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libevent-core-2.0-5 libllvm4.0 snapd-login-service
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
The following NEW packages will be installed:
0 upgraded, 2 newly installed, 0 to remove and 7 not upgraded.
Need to get 71.6 MB/71.7 MB of archives.
After this operation, 74.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 https://pkg.jenkins.io/debian-stable binary/ jenkins 2.289.3
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Failed to fetch https://pkg.jenkins.io/debian-stable/binary/jenkins_2.289.3_all.deb server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
VERSION="16.04.7 LTS (Xenial Xerus)"
PRETTY_NAME="Ubuntu 16.04.7 LTS"