If you want to “flatten” an image and avoid the history which has multiple layers, docker export and import is the best way to do that. docker save – docker save will indeed produce a tarball, but with all parent layers, and all tags + versions. docker export – docker export does also produce a…
Since v1.6.0, Kubernetes has enabled the use of CRI, Container Runtime Interface, by default. The container runtime used by default is Docker, which is enabled through the built-in dockershim CRI implementation inside of the kubelet. Other CRI-based runtimes which can be Alternative of Docker in Kubernetes include: containerd (CRI plugin built into containerd) – cri…
How to troubleshoot Docker Server(daemon) and Containers? There are following way using troubleshooting of Docker Server and Containers can be done. If you are running your container in -d (detached mode) or by docker remote API, you will not see any logs in console. To access running docker image or container logs you need to…
Top 10 Container Monitoring Solutions/Tools in 2018 Native Docker cAdvisor Scout Pingdom Datadog Sysdig Prometheus Heapster / Grafana ELK stack Sensu Reference https://rancher.com/comparing-10-container-monitoring-solutions-rancher/ Docker Tutorials Fundamental To Advanced-2021 Crash Course:- https://bit.ly/3hOIbTB Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel…
Docker is one of the revolutions technologies which has created lots of buzz in the Software development practices. Docker has not only helped to setup Continuous Integration and Delivery but also manage and replicate test environments and deploy a large at scale in no time. Here are the following advantages which benefit to testing team…
Issues – docker-compose prepends current directory name to named volumes What actually happens is that the named volume gets prepended with (a simplified version of) the directory name from which the docker-compose command was run. For instance, if I run from the “dcompos-programs” directory, and I name the volume “my_named_vol”, then I end up with a…
Error 1 – Error starting host: Error getting state for host: machine does not exist [plain] <p style=”font-weight: 400;”>D:\kubernete>minikube-windows-amd64.exe start –kubernetes-version=”v1.8.0″ –vm</p> <p style=”font-weight: 400;”>-driver=”virtualbox” –alsologtostderr</p> <p style=”font-weight: 400;”>W0110 <span data-term=”goog_1571914274″>12:16:04.517163</span> 10504 root.go:148] Error reading config file at C:\Users</p> <p style=”font-weight: 400;”>\panan4\.minikube\config\config.json: open C:\Users\panan4\.minikube\config\conf</p> <p style=”font-weight: 400;”>ig.json: The system cannot find the file specified.</p> <p style=”font-weight: 400;”>I0110 <span…
rajeshkumar created the topic: Docker malformed HTTP status code “online” Error [code language=”css”] [root@localhost madhavi]# docker pull jenkins Using default tag: latest Warning: failed to get default registry endpoint from daemon (Cannot connect to the Docker daemon. Is the docker daemon running on this host?). Using system default: index.docker.io/v1/ Cannot connect to the Docker daemon….
rajeshkumar created the topic: Docker Toolboox error in Windows Error error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.26/info: open //./pipe/docker_engine: The system cannot find the file specified. In the defau lt daemon configuration on Windows, the docker client must be run elevated to co nnect. This error may also indicate that the docker daemon is not running. Solution…
Introduction “DevOps” is an emerging model that allows effective collaboration of development and Operations team so that they can build, test, and release software faster and more reliably. Traditionally in an organization, where a waterfall method is followed in which the development team tests the new code in an isolated development environment for quality assurance….
Need to learn Docker? This is the training for you! This training provides a soup-to-nuts learning experience for core Docker technologies, including the Docker Engine, Images, Containers, Registries, Networking, Storage, and more. All of the behind the scenes theory is explained, and all concepts are clearly demonstrated on the command line. No prior knowledge of…
Step 1: Installing Docker [code] $ apt-get install docker (Ubuntu) $ yum install docker (RHEL/CENTOS) [/code] For more info, please following this http://www.scmgalaxy.com/scm/software-containers/how-to-install-docker-in-linux.html Step 2: First, pull the official jenkins image from Docker repository. [code]$ docker pull jenkins [/code] Step 3: Next, run a container using this image and map data directory from the container to…
How to get bash or ssh into a running container in background mode? Step 1: First of all, try to find your active container by running # docker ps or # docker ps -a Step 2: If the container is not running, # docker start your_id Step 3: If we use attach we can use…
Install Atlassian Jira using Docker Download and Run the jira latest: # docker run –detach –publish 8080:8080 cptactionhank/atlassian-jira:latest Then simply navigate your preferred browser to http://[dockerhost]:8080 and finish the configuration. Notes: JIRA Home location: /var/atlassian/jira JIRA Installation location: /opt/atlassian/jira Reference: https://hub.docker.com/r/cptactionhank/atlassian-jira/ Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at…
Sonatype Nexus Repository Manager 2 Install a Docker Engine Installation Instructions can be found here – http://www.devopsschool.com/tutorial/docker/docker-install-and-configuration.html Download a Sonatype Nexus Image > docker pull sonatype/nexus For Sonatype Nexus Repository Manager 2 OSS, To run (if port 8081 is open on your host): > docker run -d -p 8081:8081 –name nexus sonatype/nexus:oss For Sonatype Nexus…