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Questions tagged [containers]

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What are appropriate permissions for developer computers taking advantage of what we learned over the last 20 years? [closed]

If you go trying to find the best way to balance security considerations against the flexibility developers require to do their jobs, regardless how carefully you try to phrase your search, all the ...
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2 votes
0 answers
22 views

How to deal with missing packages from ubi-8-appstream?

I'm looking for best practices with Red Hat's sponsored container images: Universal Base Image, when we need to deploy application using this containers. A lot of third party apps requires packages ...
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0 answers
42 views

Docker-compose: how to use Nginx Reverse Proxy with routing

I am using docker-compose with nginx reverse proxy to run it on server with different paths: server_ip/backend server_ip /frontend should work on port 80. I'm testing it with a docker-compose using ...
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0 votes
1 answer
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bind9 docker container doesn't start after changing named.conf.options

I started docker bind9 container using ubuntu/bind9 image. but after changing a line of /etc/bind/named.conf.options it won't start.how can i change configuration while it won't start? here is my ...
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Are there container orchestration platforms (e.g. k8s) that allows nodes to be containers, in production?

Existing popular platforms do not allow this: As per k8s docs: A node may be a virtual or physical machine The same is seen in k3s docs: A server node is defined as a machine (bare-metal or ...
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35 views

install helm chart package without public container registry (offline,locally)

My problem is when i want to install a package in Kubernetes cluster with helm chart, for example install gitlab with helm, during installation there is need to download docker image from a public ...
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57 views

Error uploading large files (>2gb) through nginx reverse proxy to container

I am running an application in a docker container (https://github.com/filebrowser/filebrowser/) that I am trying to upload very large (>2) gb files to. The container exposes the app on a ...
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29 views

How do i redirect proxy nginx?

I am running 2 geoserver and nginx container. I want to call https://xxx.xxx.com/geoserver the other one https://xxx.xxx.com/geoserver2. The geoserver containers are running behind proxy container. ...
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How to containerize a Linux native application in order to have multiple versions of it running at the same time from mostly the same codebase?

I have a Linux server application that is no longer supported by the vendor. I need to run 2-3 versions of this application at the same time in parallel. I can set up different VMs for it, and it ...
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1 vote
0 answers
14 views

Options to improve container volume mount's SMB metadata operations performance

Question Are there any ways to improve metadata operation performance between a Linux based container running under Azure App Service and a mounted volume hosted in Azure Files? Context I recently ...
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Azure monitor option not available in grafana, how to fix that?

I am trying to integrate azure kubernetes container insights with grafana dashboard. The plugin for that For that, I have installed grafana on an azure cloud ubuntu 20 machine following the steps in ...
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0 votes
2 answers
264 views

How to install xargs in container running openjdk:17-oracle

I'm trying to install xargs in a container running openjdk:17-oracle, but I'm unable to figure our what package manager is present in this image. FROM openjdk:17-oracle RUN apt-get install findutils ...
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1 answer
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Can I mount a Lightsail disk as a volume on a container service?

I need to mount a Lightsail disk as a volume on an Lightsail container service I want use to run a Docker container in. I need this for the persistent storage. Is that possible or are Lightsail ...
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  • 109
0 votes
1 answer
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Making sure the "platform" part of an image from DockerHub is up-to-date

I would like to use images from DockerHub. I trust the applications that the containers are for and I trust the maintainers to update the DockerHub image if their application gets an update. I however ...
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0 votes
1 answer
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Wrong OWNER USER on folder/file: docker run -v <host_path_dir_file>:<docker_some_path_dir_file>/ not working for user defined in Dockerfile

Host OS: Red Hat Enterprise Linux Server release 7.9 (Maipo) Guest OS i.e. a Docker container running: OpenSuse 15.2 Docker Version (on Host): Docker version 19.03.5, build 633a0ea On host, when I git ...
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  • 115
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PostgreSQL as stateful k8s application - issue with mounted volumes ( in regards to ownership)

I am trying to adopt a stateful k8s PostgreSQL cluster based on this article to the local environment in my company. EDIT this is a vmware tanzu cluster, which I do not have not set up myself, so I do ...
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  • 217
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0 answers
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systemd-nspawn - run a host binary with network isolation

I am trying to run a binary sitting on the host machine using systemd-nspawn with networking support. I am trying to run multiple copies of the binary where each instance would have its IP address. I ...
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0 votes
0 answers
125 views

I Could not ping or curl master node flannel interface

I have 3 nodes in the cluster, one is the master node and two are the worker nodes. I use CNI flannel for the Kubernetes cluster. I run an Nginx ingress in my cluster for the load balancer and the ...
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1 vote
2 answers
109 views

How to do live migration from flannel to calico on single node kubernetes cluster?

I am trying to migrate from flannel to calico in k8s cluster. I am able to do it successfully in 3 node cluster. Live migration from flannel to calico is working as described in the documentation. But ...
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0 votes
1 answer
33 views

Cannot execute dpkg command in kube-proxy container

I'm currently trying to get a list of all installed debian packages (dpkg) on the k8s.gcr.io/kube-proxy:v1.23.2 container. First I tried to execute dpkg -l in the running container as a part of my ...
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Running an OpenVPN server in Docker on Ubuntu 20.04?

I'd like to run an OpenVPN server on my Ubuntu 20.04 server. There are plenty step-by-step guides as to how to do so (like here or there), this seems fairly straightforward process. However instead of ...
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0 votes
1 answer
173 views

Container bridge networking with subnet on Hetzner and CNI

I am trying to create a private network of VMs and containers on Hetzner Cloud. I've tested this setup on my local home network and all works fine. The plan is to have a private network for the VMs (...
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0 answers
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How to access a SMB NAS installed on a Windows Domain from a .NET Core application containerized on Microsoft Service Fabric (On Prem)

We have to access a Windows domain SMB NAS from a .NET Core 3.1 application installed on a container; this container runs on Microsoft Service Fabric On Premise. The current solution, before starting ...
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Which Docker container layout pattern is to be avoided?

I would like to run two web services on a single physical server using Docker. Both services require a web server and a SQL database. The following setups are thinkable ([ ... ] marks a Docker ...
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Containerized deployment vs. traditional deployment in cloud services, what exactly is the advantage in my use case?

Currently I have a traditional deployment process that works as follows: There are many different "functionalities". Each functionality operates on a different environment, but cross-...
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  • 185
1 vote
1 answer
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Student SSH access directly to container

I teach a community college course on linux system administration. Some students in the class do not have ready access to a linux install so the college has an SSH server they can access to complete ...
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  • 135
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How To Add Docker Container Static Route?

Have a server with 4 subnets - 1 usable IP each and each configured on separate network port on the network card. Running 4 docker containers, but they are randomly accessible upon reboot. How to add ...
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LXD vs libvirt LXC driver

Are LXD and libvirt with LXC driver doing the exact same thing (just provision LXC containers)? If so, is there any advantage in using one over the other?
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1 vote
1 answer
440 views

podman container fails to start: mkdir journal dir permission denied

I had some containers running smoothly in Centos 8.2 with podman. After upgrading to Centos 8.5, I found several of the containers failing to run. In the command line, I see this: $ podman run --name=...
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0 votes
1 answer
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Setting up an architecture for analyses flows of time stream data from multiple sources [closed]

What would be the best practice in terms of AWS for the following: Many IOT medical devices gather data at around 256kBps The data is a time series data (a matrix of [Channels X Samples], there can ...
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702 views

How to pass the chromedriver path to nodejs selenium-webdriver in Docker

Here is my docker file. FROM node:17.2.0 USER root WORKDIR /LT RUN apt-get update RUN apt-get install git --yes COPY /LT . COPY /LT/test . COPY ["/LT/package.json", "."] # ...
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  • 3
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0 answers
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Listing btrfs subvolumes not allowed in container

I try to run a btrbk server within a systemd container. Unfortunately, I cannot get btrbk running since the command btrfs subvolume list /srv/backup fails to run from within the container with "...
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  • 163
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1 answer
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Can I restore a Vzdump tar archive to an LXD/LXC container

I have a number of "tar" files created from an old proxmox 6 server, using the vzdump tool. The person that originally created them has left the company, and the company has changed it's ...
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  • 293
1 vote
0 answers
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Unable to make two docker containers communicate

I am trying to make two containers communicates on a server like it is working on my machine. The thing is that they are not able to communicate (trying to ping container B from container A) I first ...
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0 votes
0 answers
2k views

Connect to postgres database behind nginx reverse-proxy using docker containers

I have set up a postgres database container and can connect and query it directly using its published port 5434. The goal is to deploy the test database later and access it via nginx reverse proxy. I ...
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  • 1
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1 answer
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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 ...
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  • 396
1 vote
0 answers
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How to send pending shutdown message to systemd services

I'm using Fedora CoreOS with the automatic updater enabled, which is great for my use case. Already, when logged in interactively, the system warns about an imminent shutdown/restart via the console, ...
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  • 111
1 vote
0 answers
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How to map ports in Azure Container Instances via Terraform?

I have two containers in my container group on Azure using Azure Container Instances (ACI), one (container A) exposing ports 80 and 443 to the internet (reverse proxy), the other one (container B) ...
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0 votes
1 answer
74 views

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 ...
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0 votes
0 answers
51 views

How can I mitigate the risks of intentionally allowing users to run code on a server, in a resource-efficient manner?

To summarize: I want to run multiple servers on a host, for different groups of users, and allow them to add and modify functionality of the servers at runtime with some form of scripting. This is a ...
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318 views

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 ...
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0 votes
0 answers
66 views

cacti container mysql service unable to start

I tried to run this cacti container but MySQL failed to start, any idea, I have tried all sorts of answers from the site. https://hub.docker.com/r/quantumobject/docker-cacti [cacti@rhelvm3 ~]$ podman ...
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2 votes
0 answers
528 views

CredentialRetrievalError within ECS container

Problem I have deployed an ECS cluster and am running a job orchestration platform on the cluster. One of the containers of this platform uses the python docker api to pull a container from our ...
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0 votes
0 answers
42 views

Is there any documentation on the Azure App Service configuration flag CONTAINER_SKIP_CONFIGURATION?

I noticed this flag being checked in the startup logs of a Windows container. I've tried setting it to 1 since I'm having startup issues, but other than the logs indicating that it skipped ...
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0 votes
1 answer
305 views

Troubleshooting Windows container in Azure app service

I've been struggling for over a week to get a Windows container to run with an Azure App Service. My initial preference was to just use a standard container instance, but it appears that you only ...
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0 votes
0 answers
402 views

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 ...
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-2 votes
4 answers
103 views

Why virtualization still used instead of containers? [closed]

In 2021 era of containers, cloud providers still use hypervisor to make it possible to use more of a system's available resources and provide greater IT mobility since the guest VMs are independent of ...
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0 votes
0 answers
216 views

Running a Windows 10 GUI Desktop within a Windows Container / Hyper-V Isolation?

I am new to the world of containers, so I have what may be a very basic question. TLDR: Can I install the Full Windows 10 OS into a Windows Container, and access it via RDP or somehow through console? ...
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1 answer
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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 : {...
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  • 111
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0 answers
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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 ...
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