Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [ubuntu-16.04]

Ubuntu 16.04 - named "Xenial Xerus" - is a Long Term Support (LTS) release of Ubuntu Linux. Officially released on April 21, 2016, it will be supported for 5 years. Only use this tag if your question is version-specific.

0
votes
0answers
10 views

Openvz VPS Ubuntu 16 /var/run/sshd directory missing at every reboot [duplicate]

I am running a few VPS servers with OpenVZ latest kernel and Ubuntu 16.0.4 that I resell to my customers. Every reboot, the /var/run/sshd directory gets deleted, for unknown reasons apparently, and ...
0
votes
2answers
12 views

Soffice.bin high CPU usage

On an Ubuntu 16.04 64bit server (kernel 4.4.0-142-generic) with 4gb of RAM and a 2 cores (Intel(R) Pentium(R) CPU G2030 @ 3.00GHz), we run LibreOffice 5.1.6.2 headless to convert HTML to PDF documents....
0
votes
0answers
10 views

Postfix - Emulate shared hosting mail behavior on VPS with VirtualMin [closed]

How can I setup Postfix on VirtualMin, to correctly send mails with smtp.mailfrom from domain of each installed Wordpress site? I have a VirtualMin setup that sends mail but it gets spammed out on ...
0
votes
0answers
8 views

firewalld syslog entries ubuntu 16.04 [duplicate]

basically my server is on 192.168.1.114 and i am showing multiple connection attempts from my windows 7 computers on 192.168.1.106 I have shut down winscp and putty and all browser windows and yet i ...
6
votes
1answer
58 views

Ubuntu 18.04 strange behaviour of date with --date option

I've found strange behaviour of date program in Ubuntu 18.04. So, I consider date should work with --date option and correctly process +N minutes: date --date "2019-01-01 13:43:32 +1 minutes" "+%Y-%...
0
votes
1answer
40 views

Close ports 8080 and 8443 for wildfl 14

I deployed wildfly 14 & Nginx on a pre-prodction server.Where Nginx is a reverse proxy. and I forced wildfly to use the ssl throught the 443 by adding a socket-binding <socket-binding-...
1
vote
0answers
16 views

OpenVPN server accepting connections but not allowing traffic

I have installed Ubuntu 16.04 on a rooted Android box with Linux Deploy to make it a OpenVPN server. I have diligently followed the guide at https://nanashi07.blogspot.com/2017/...id-device.html and ...
2
votes
1answer
42 views

Where is “http://ubuntu/ubuntu” (in apt sources.list) defined?

In recent servers provided by my client's hosting provider, the /etc/apt/sources.list file contains references to: deb http://ubuntu/ubuntu/ xenial main restricted ... deb http://ubuntu-secu/ubuntu ...
0
votes
1answer
23 views

Disable weak Cipher ubuntu 16

I have started security scanning my network and have issues with Ubuntu 16 and weak cipher suites. I think I found the sshd config. but everything I read on the TLS for apache tells me to go to /etc/...
0
votes
1answer
25 views

SSL Enabled Geonode Service

Recently I have installed geonode on apache tomcat8 in an Ubuntu 16.04 droplet on digitalocean . Everything worked without any issue. The service was up and running. Then I tried to enable SSL for ...
1
vote
0answers
22 views

Route OpenVPN client traffic to a proxy? (iptables magic needed??)

I have an OpenVPN server running on a VPS with OpenVPN client running on my router on my home network. I'm trying to route my clients traffic over a proxy after it reaches the OpenVPN server so my vps ...
1
vote
0answers
79 views

ubuntu-18.04.1 missing install/netboot/

I'm working on setting up PXE boot server and while following some online instructions to mount the ISO and copy over everything under /mnt/install/netboot/, I noticed that a mount of ubuntu-18.04.1.0-...
10
votes
4answers
433 views

Options for performance improvements on very big Filesystems and high IOWAIT

I have a Ubuntu 16.04 Backup Server with 8x10TB HDD via a SATA 3.0 Backplane. The 8 Harddisks are assembled to a RAID6, an EXT4 Filesystem is in use. This Filesystem stores a huge amount of small ...
1
vote
0answers
30 views

How to configure Node.js ExpressJs for HTTPS?

I am attempting to get an nginx,NodeJs,Express route working correctly on a server instance (Digital Ocean). So far, this is the situation: What currently works: http://api.xxxxxx.com - switches to ...
1
vote
1answer
37 views

Samba and router DNS setup with custom DNS

I would like to use samba on ubuntu 16.04 as an AD DC. I use custom DNS servers (OpenDNS). How should I set the DNS settings up? (e.g. my router's address is 192.168.1.1, the server is 192.168.1.2). ...
2
votes
1answer
37 views

Apache and MySQL processes running at 100% CPU

I have a production server that's usually very stable, and has been for a very long time. Last night, it suddenly started showing very high loads (150+). Deactivating Apache will decrease the load ...
0
votes
1answer
37 views

Kube dashboard and calico network in pending state

I am following the below blog to create a kubernetes cluster (on AWS EC2). https://www.edureka.co/blog/install-kubernetes-on-ubuntu I completed executing the commands till master config. But ...
0
votes
0answers
22 views

UFW allow from rules for service names (Nginx HTTP, OpenSSH)

I'm trying to set-up a server, but deny access from all IPs except specific IPs. I've installed the services OpenSSH and NGINX. To add these services to my firewall (using UFW), I am required to add ...
0
votes
1answer
34 views

Unable to connect to port 993 for IMAP on Ubuntu server with Postfix/Dovecot/MySQL

Ubuntu 16.04.5 Apache2 MySQL Postfix w/MySQL Dovecot SASL2 UFW I am trying to install a working mail server and client on this machine. I followed this tutorial which allows authentication through ...
0
votes
0answers
56 views

SSH AWS Operation time out in terminal EC2 Ubuntu 16.04 Apache 2

Hi thanks for reading, I usually connect to my instance no problem. For example: mymac:~ ssh i- path/to/my/key.pem ubuntu@ec2-really-long-public-dns This worked yesterday, however today the same ...
1
vote
2answers
81 views

VMware ESXi VM auto-suspended until login?

I noticed something weird on an Ubuntu Server 16.04 virtual machine running on VMWare ESXi 6.0. The machine hosts a website running on Apache 2 that is exposed to Internet. Also it runs SSHd to allow ...
0
votes
0answers
36 views

Failed to get properties: No such interface '' in Ubuntu 16.04.3 LTS [duplicate]

I Created this Unit file tdk-api.service in the /etc/systemd/system folder with this permissions: -rwxr-xr-x with this content: [Unit] Description = tdk API daemon [Service] Type = simple ExecStart ...
0
votes
0answers
26 views

PTP causes periodic time jumps

I have GigEVision cameras where I like to synchronize the cameras' internal clocks with a Ubuntu 16.04.5 host via PTP. Unfortunately, as soon as I enable the PTP synchronization, I get periodic jumps ...
1
vote
0answers
52 views

Can I delete events.out.tfevents.XXXXXXXXXX.computer_name files from TENSORFLOW training folder

I am training faster_rcnn_inception module for object detection on custom dataset. In training directory,we found folder called eval_0 and tensorflow generated events.out.tfevents.xxxxxx files. ...
0
votes
1answer
16 views

Deny NTP servers with stratum more than specific level

How can I deny in my /etc/ntp/ntp.conf to sync with the NTP server with specific stratum level (e.g. more than 5 )? I have a bad NTP server in my local network and sometimes is going really wrong ...
0
votes
0answers
11 views

Nginx - Forward a request to another port for a specific url in 443 server block

I want the requests for "https://www.example.com/api/***" to go to port 8000. The nodejs server is running on 8000 port and I want to send these api requests to that server. My current config file is ...
0
votes
1answer
22 views

Grub stuck at menu until I connect to console using VNC

I installed an Ubuntu 16.04 Server virtual machine on FreeNAS. Everything works as expected, except GRUB. When I reboot the machine with sudo reboot, it does not boot automatically. Every time I have ...
0
votes
0answers
7 views

Users migration between 2 ejabberd server

We are using ejabberd 14.12 version. We have hosted server in AWS. Now we are planning to migrate users from one ejabberd server hosted in an x region to ejabberd server installed in y region. We have ...
0
votes
0answers
41 views

Certbot renew running but not renewing

I've installed certbot on an Ubuntu 16.04 host using the PPA. I can see that the certbot timer is configured to run and that it's running: jaraco@punisher:~$ sudo systemctl status certbot ● certbot....
3
votes
1answer
37 views

Not sure how to read lsattr output, where can the legend be found?

When I run the lsattr command, I get the following output: root@swarm-stg-01:/etc# lsattr timezone --------------e--- timezone But I don't understand how to read he output and man command doesn't ...
2
votes
0answers
21 views

Restricting user access to a subset of binaries

I checked rbash and chroot jail, which doesn't have permission to read /var/log. Scenario: ssh user should only able to cd to a directory and do less for files. eg: ssh user@server.com cd /var/...
1
vote
0answers
69 views

journald forwarding to syslog seems to be lagged

I'm seeing an issue on a Ubuntu 16.04 box where the copying/forwarding of journal messages to /var/log/syslog seems to be delayed: theuser@host:/etc/systemd$ sudo journalctl -n 1 && sudo tail ...
0
votes
0answers
45 views

systemd: how to enable/disable network interface with local login?

We have a setup where students log in (using LDAP auth) to Ubuntu 16.04 machines, where two network cards are installed: one to connect to the LAN and Ethernet, and the second one to expose a ...
4
votes
2answers
98 views

Automatically mount SSD instance storage on AWS EC2 in Ubuntu 16.04

I am using an Ubuntu 16.04 EC2 from AWS on c5d.2xlarge HW. It comes with a 200 GB SSD called /dev/nvme1n1. I am able to mount this drive using: $ sudo mkfs.ext4 -E nodiscard /dev/nvme1n1 $ sudo ...
-3
votes
1answer
49 views

Edit fstab on unmounted device

I tried to add swapfile to the root file system on AWS EC2 instance. Did I made a mistake during the edit of fstab? sudo dd if=/dev/zero of=/swapfile bs=1G count=4 chmod 600 /swapfile mkswap /...
1
vote
1answer
138 views

Why can't I access my FTP server with Windows Explorer?

I have an instance running Ubuntu 16.0.4 LTS on Google Compute Engine with port 21 open to it. I have installed vsftpd on it, added a user for the ftp, and set the directory permissions to full access ...
1
vote
0answers
79 views

Upgraded 14.04 to 16.04 and boot is dropping to initramfs prompt

Anyone know how to fix this? I upgraded a system with LVM partitions for /, /var, /usr, /home and it seems like initrd can't figure out the LVM scheme. I found a bugreport on launchpad regarding this ...
0
votes
1answer
57 views

Postfix not starting in gitlab docker container

I am trying to get postfix running on the gitlab/gitlab-ce:9.3.6-ce.0 docker container and it doesn't seem to work startup I get the following error: postfix start postfix/postfix-script: starting ...
1
vote
1answer
49 views

Something looks wrong in this Linux RAID

This Ubuntu Server 16.04 machine has these disks: sudo fdisk -l Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): ...
1
vote
1answer
49 views

How to keep custom kernel modules on kernel updates installed?

I've got a NIC (Asus XG C100C) that is not properly supported in the current Linux kernel. Hence, I installed driver which I compiled from source. Every time when the kernel is updated, I have to ...
2
votes
1answer
81 views

WWW::Mechanize Perl module won't install on server

I'm trying to work out why a Perl module won't install on my server. cpanm WWW::Mechanize It processes stuff for ages, and then eventually dies with: root@admin:~# cpanm WWW::Mechanize --> ...
1
vote
0answers
53 views

mysql_secure_installation on Ubuntu 16.04 doesn't set the root pass

I'm upgrading a few mysql (MariaDB) hosts from Ubuntu 14.04 to 16.04 and noticed mysql_secure_installation doesn't seem to set a root password on the DB, even though it prompted me for it. I changed ...
1
vote
1answer
93 views

linux web server, send mail using external (hosting provider) dns

I set Ubuntu 16.04 LTS server as web server (apache-php-mysql and sendmail) with valid public ip-address. Also, I use a hosting provider to redirect www.mydomain.com to my Ubuntu web server. Web ...
0
votes
1answer
84 views

How to serve wordpress (LAMP) and Angular (Node/Express) app on same server/domain

I'm currently running a web server with Ubuntu 16.04, serving up a Wordpress site, using LAMP stack and LetsEncrypt SSL to encrypt the website. I'd like to be able to run an Angular app with the MEAN ...
0
votes
1answer
55 views

/var/log/cron.log returning CRON[PID]: Permission denied for domain joined account

I'm trying to get a cron job to run, but not as root. Within the context of the user (domainuser@contoso.com), here are the outputs of the crontab and cron.log: Output of crontab -l # Edit this ...
0
votes
0answers
48 views

OpenVPN issue when client tries to connect: read UDP: Connection reset by peer (WSAECONNRESET) (code=10054)

UPDATE: Here's the output when I try to access OpenVPN using my Verizon router instead of my homemade Ubuntu router. It doesn't work immediately after I plug in the router, but in about a day or so, ...
2
votes
1answer
61 views

IP change to Domain Name in Ubuntu

I am currently setting up Magento 2.2 for the company I am working with. I set up most of the things and installed the Magento package on the IP Host. I can access it and it kind of works fine until I ...
1
vote
1answer
125 views

How to determine the cause of stuck `D` status processes?

I have several processes stuck on uninterruptible sleep statuses, all seemingly stemming from auplink /var/lib/docker/aufs/mnt. It's something docker related and it's waiting on an I/O that will never ...
0
votes
1answer
103 views

nginx with nginx-auth-ldap won't make

I've done this before and used this guide: https://calvin.me/nginx-ldap-http-authentication/ Unfortunately lately that server has had some major issues with nginx crashing (there have been no changes ...
-1
votes
1answer
45 views

set apache as default server in ubuntu 16.04

first i installed apache on my local system, it working fine and then for some reason i installed nginx it also works fine, but now problem is each time when i start my system by default nginx is ...