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Questions tagged [containers]

436 questions
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Java large heap in container environment

I'm trying to run a Jetty webserver on kubernetes, it needs an extremely huge amount of heap ~ 250 GB in our production environment, ~ 50 GB in our test environment. I'm using jetty:9.4-jdk11, I'm trying to avoid setting Xms or Xmx flags explicitly…
montss
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Windows OS Version

I'd like to run containers on a Windows Server 2022. Unfortunatelly it says The container operating system does not match the host operating system. My host ver is: 10.0.20348.261 (I haven't found any description of this on Google) My dotnet image…
Jan Zahradník
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If a user runs libvirtd inside a docker container, is there any way to discover the user's VMs?

Potentially naive question that I'm hoping some cgroups experts can answer quickly: Assuming the following docker workflow was run by Linux user joe, how can the system root user determine that a VM is indeed…
BrianTheLion
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How to create a SSH connection between Ansible and Jenkins containers

I'm new to Jenkins. My goal is to create a Jenkins job\pipeline that will activate a group of ansible's playbook files - which will create a long installation of my tested product. I build 2 containers in Docker desktop (Windows): Ansible and…
Hiddai
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Using SSH in check of Consul

I have a server with a dockerized Consul Agent (CA). In this CA, I want to run a script from the host who checks how many disk space left in a service check. For this, I created a service in the CA : { "service": { "name":…
M4kn4sh
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Firecracker vs ACRN?

What is the main difference between the ACRN and the firecracker hypervisors ? As I understand, ACRN The ACRN Hypervisor is a Type 1 reference hypervisor stack, running directly on the bare-metal hardware, and is suitable for a variety of IoT and…
Kirill K
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Can't access webUI for Unifi Controller locally running in docker

I am able to access other docker containers which are hosted on my server via their web interfaces on various ports, but Unifi Controller is giving me "refused to connect" type errors. This is the output of docker ps CONTAINER ID IMAGE …
Syntax Error
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Strange behavior of Docker's Image Pull Rate Limit

I have an Ubuntu 20.04 LTS Server with packages docker-ce, docker-ce-cli, and containerd.io installed on it. When I try to pull an image from Docker Hub for the second time this day, the toomanyrequests error shows up but as of Docker's website, I'm…
MBiabanpour
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How to block container communication (172.17.0.0/16) except of the default gateway with iptables

I am using docker to run containers. I don't want the containers to have access to the other containers but I want them to still have access to external communication like using apt update. The containers network is 172.17.0.0/16, if I just block…
E235
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Can containers be placed on EC2 host in overloaded fashion in AWS ECS

I have an instance with multiple tomcat applications and standalone jars running. If the machine has 2vcpu and 8GB RAM the individual applications can use use the resources on demand(based on the Xms and Xmx values set for tomcat and for the…
Kohini
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Constant timeouts when conecting from LAN to services behind a reverse proxy

years after my first home server died, i've decided to have one again. This time for the sake of learning and having more flexibility i'm doing it with docker containers. The thing is, i've set up a reverse proxy with nginx and the let's ecnrypt…
Alex Coronas
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Why does running a containerized app with AWS Lightsail cost twice as much as using a virtual server?

As per https://aws.amazon.com/lightsail/pricing/ , running a lightsail VPS with 512 MB Memory, 1 Core Processor costs $3.50 a month. However, in that same link it shows that the lowest cost of containerized app on the service is twice as much at…
timfoil
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How to remove a broken qemu / kvm container?

I'm running some containers on my server (qemu kvm, libvirt). A few of them are totally broken and I am unable to remove them by any means. Have been googlin for half a day, but just can't find a working solution. I have tried removing the broken…
Ray
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Can't run slapd inside an ubuntu docker container

I am trying to create two docker containers, one to act as an ldap server and the other an ldap client. I started by creating the server. I am running on ubuntu 18.04 and using ubuntu image for my container, I just installed slapd & ldap-utils but…
Ahmed Bekhet
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LXD Container IPv4 Interface Management

Ubuntu 18.04.4 lxd 3.0.3 lxc 3.0.3 I have had several containers running without issue for a long time. Today I was making changes to my network and one of the containers picked up a DHCP address. user@localhost:/tmp$ sudo lxc list…
user1801810
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