Nagios web interface access not found - linux

i have installed Nagios in ubuntu 18.04 by following the instructions given in digitalocean-nagios-installation-ubuntu18.04 . After installation, while we accessing nagios web-interface we are facing How can we resolve this?

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VAS service not installed in ubuntu server by default

We have three Ubuntu (14.04 and 18.04) servers and vasd service is not installed by default in our servers. When I try to check vas service status I'm getting the below error as those directory (/opt/quest/bin) and service are not installed.
/opt/quest/bin/vastool status
-su: /opt/quest/bin/vastool: No such file or directory
I need to install vas service and I need to get the above directories automatically. Can someone please help me to install this?

Logs issue of OSSEC installed on virtual machine of ubuntu linux in Azure

I installed OSSEC on virtual machine(node) of ubuntu linux in Azure by following https://blog.rapid7.com/2017/06/30/how-to-install-and-configure-ossec-on-ubuntu-linux/
OSSEC got installed and running properly but when tried to act as intruder, logs are not generating like syslogs,authlogs and alerts.
How to solve the issue of logs are not generating when I tried to perform as intruder.

When “vagrant up” it says “It appears your machine doesn't support NFS” (Debian jessie)

Issue
when vagrant up it says "It appears your machine doesn't support NFS"
Setups
Debian GNU/Linux 8 (jessie)
Vagrant 1:2.0.0
Virtualbox 5.1.30 r118389
Detail
After using apt-get to update and upgrade the system, I basically followed the instruction from the Mediawiki page, since I wanted to install Mathoid to render LaTeX equations locally for mediawiki page.
However, when I vagrant up it echos the following:
It appears your machine doesn't support NFS, or there is not an
adapter to enable NFS on this machine for Vagrant. Please verify
that `nfsd` is installed on your machine, and try again. If you're
on Windows, NFS isn't supported. If the problem persists, please
contact Vagrant support.
I checked if nfsd is correctly working on the host, and it says it's enabled.
# /etc/init.d/nfs-kernel-server status
nfs-kernel-server.service - LSB: Kernel NFS server support
Loaded: loaded (/etc/init.d/nfs-kernel-server)
Active: active (running) since Sun 2017-10-15 07:56:32 -02; 2 weeks 0 days ago
CGroup: /system.slice/nfs-kernel-server.service
??1277 /usr/sbin/rpc.mountd --manage-gids
I also tried google, and did not find a solution that fits my problem and I couldn't find any hint to resolve this. For instance, I tried to install the package
sudo apt-get install nfs-common
But it has been already installed.
Thank you in advance.
The command mentioned below works for linux mint 18.3:
sudo apt-get install nfs-common nfs-kernel-server
For Windows users seeing that error, run the following command to add support for NFS for Vagrant:
vagrant plugin install vagrant-winnfsd
The GitHub repo for this plugin is found here.
Also, to see the currently installed Vagrant plugins run this:
vagrant plugin list
Can be fixed by adding any exports to /etc/exports.
by :
modprobe nfs
modprobe nfsd
then running vagrant, which will add /etc/exports, then reloading
kernel-server and restarting vagrant.
issue http://jb-blog.readthedocs.io/en/latest/posts/0021-vagrant-nfs-problems.html
instead of installed NFS cos really no supported :
Try just removing type: nfs from the vagrant_synced_folders
More : https://www.vagrantup.com/docs/synced-folders/nfs.html

Buster static page generator generate does not work under ubuntu

I've ghost bloggind platform based on node.js installed locally on ubuntu 16.04 under var/www.
http://localhost:2368/ghost/ works perfectly. I can add new posts, etc.. However while running buster generate in the console from the var/www directory I got the following error :
Connecting to 127.0.0.1:2368... failed: Connection refused.
I'm totally new to linux, servers, node.js...
Is it something about permissions ? Should I change something with chmod/chown ?
Is it something related to Apache ?
Thanks for your help

ApacheDS unable to start correctly

I recently installed ApacheDS on a Ubuntu server 12.04 LTS,
when I start it via
sudo /etc/init.d/apacheds-[...]-default start
it gives me this output :
chown: invalid user: `#user#:apacheds'
Unknown id: #user#
I installed ApacheDS using the binary installer downloaded from the official website. I also used the default settings for everything during the installation.
Is there a work around or a way to make ApacheDS start correctly ?
Thanks

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