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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 was supported for 5 years. Extended Security Maintenance subscriptions are offered by Canonical until April 2024. Only use this tag if your question is version-specific.

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 for Ubuntu Desktop, Ubuntu Server, Ubuntu Core, and Ubuntu Kylin. Only use this tag if your question is version-specific. Note that the Ask Ubuntu site is specifically dedicated to Ubuntu questions.

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ubuntu only use 8 cpu for RX and TX queue with vmxnet3

I installed Ubuntu 16.04 on vmware esxi 6.7 with 32 core cpu for this machine. Linux only run 8 queue for tx and rx and it cant use all cpus in heavy load. # ethtool -S ens192 | grep Queue Tx Queue#: 0 Tx Queue#: 1 Tx Queue#: 2 Tx Queue#: 3 Tx…
Behrad Eslamifar
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Why does certbot suddenly fall back to http-01 challenge instead of tls-sni-01 (https)?

I have a well-tested bash script that was running fine until a few weeks ago. It seems that certbot challenge defaults now to http instead of https. I can't figure out the reason. echo 'rsa-key-size = 2048 renew-hook = /usr/sbin/ipsec reload &&…
Houman
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Cannot connect to OpenVPN server under Ubuntu 16.04

I'm trying to connect to a VPN server. I'v got client.ovpn from my system admin. When running: sudo openvpn --config client.ovpn I'm getting Initialization Sequence Completed after few seconds, but my connection isn't working. trying to - ping…
Arnon
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SSL_ERROR_RX_RECORD_TOO_LONG certbot

I have the following setup: Apache 2.4 Ubuntu 16.04 LTS letsencrypt / certbot Now, as soon as I enable the following .conf on the default server, all my configured top level domains receive a SSL_ERROR_RX_RECORD_TOO_LONG error. If I disable this…
Michael
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apt upgrade very large, how can I see size of individual packages?

When I usually log in to server and do apt upgrade its usually max a few hundred mb is required for update. I just logged in to one of my vps that only has virtualmin installed and the apt upgrade is reporting it needs 16.8gb which is more space…
Guerrilla
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500 internal server - AH02429: Response header name

OS Ubuntu Ubuntu 16.04.2 LTS Apache/2.4.18 Perl v5.22.1 So I have perl code that reads a mysql database, and then creates a dynamic webpage. The code's been working great for years. A week ago, my client calls and says they are getting a 500…
user3640899
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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 complete -- I get that, but how do I determine…
TtT23
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How to get /64 as prefix length when using DHCPv6 and radvd?

For our networking course we were asked to set up a DHCPv6 server in a virtual machine. I choose to work on a virtual machine(on VMware) running Ubuntu Desktop 16.04 and Lubuntu 14.04 as test client with network adapters set for a specific LAN. I…
Jugurtha
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Getting Ubuntu 16.04 on a ZFS root on a Hetzner dedicated server

By now, it's well possible to get Ubuntu 16.04 running on a ZFS root-fs. Ubuntu 16.04 has ZFS in the default package manager, and with guides like this, it's not hard to get started. However, all guides I've seen require being able to boot from a…
TinkerTank
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`ls` command hangs indefinitely in some directory in an azure File Storage share

I have an azure File Storage share mounted in a Ubuntu 16.04 VM following this how-to. Everything seems to work fine. So I run some process that produces a lot of data, e.g. 10k files for each run, collect them into a directory for each run, and…
petrux
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Ubuntu 16.04 nfs-kernel-server won't start

After a system reboot, nfs-kernel-server was inactive. When I try to start I get nfs-server.service: Job nfs-server.service/start failed with result 'dependency'. which is echoed in journalctl -xe. I am using Ubuntu 16.04.2. Tried a reinstall, and…
scojo5
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RabbitMq Management plugin only on localhost

On RabbitMQ 3.5.7 Ubuntu 16.04. I want to implement RabbitMq Management plugin only on localhost, the idea is to use a tunnel to reach the RabbitMq Management Web GUI from the computer I use to connect to my server using SSH. I found this thread…
nyluje
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MongoDB "too many files open" even after setting limits

When MongoDB starts up, I am greeted with a "too many files" error, even after editing /etc/security/limits.conf and setting the limit to unlimited. Mar 09 18:29:13 ns524052 mongod[1298]: 2017-03-09T18:29:13.199+0100 I CONTROL [initandlisten] …
inventor02
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Complete High Availability System

I'm in the process of configuring a LAMP server but want to make sure it'll be ready for expansion for the future. Here's my current setup.. Two physical windows servers clustered with Hyper-V Two virtual machines, one for Apache and another for…
royjr
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I accidentally deleted /var/log/syslog, Now rsyslog Won't Log anything

I accidentally deleted /var/log/syslog, thinking that the system would automatically recreated it (it doesn't). I used touch /var/log/syslog and restarted rsyslog, but the system still isn't logging anything. I also restarted the entire server to…
Native Coder
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