Installed docker on Centos (running using VirtualBox) following steps below:
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum install docker
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
And I rebooted my virtual machine, and as I type 'docker --version, I get below:
"Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg. podman version 1.0.5"
Can anybody explain what is going on in my machine?
#swxraft if you run the commands in the order posted in your question
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum install docker
sudo yum-config-manager --add-repo
https://download.docker.com/linux/centos/docker-ce.repo
you installed a docker in the REHL repo (probably an alias to podman). And then loaded the repo for the oficial docker but never installed from there.
Extra info:
A) installation docker
How to install docker: follow this link [1] instead #govinda-malavipathirana. Latest docker-ce needs a newer containerd.io but REHL is excluding the ones in the docker repo. So you need to install docker -ce with --nobest (see instructions and error in link). Also you need to disable the firewall.d to have DNS in docker.
B) why docker is not in REHL8
Docker cli and daemon are not supported by REHL8 and its derivatives and it is "blocked" in several ways. Why is not suported -> monolitic and old [2]
Docker images ARE supported using podman. The images created with docker work with podman and viceversa. Also podman commands are the same as docker client.
Podman is a substitute of docker (but it does not use a daemon). They recommend to add a symlink docker -> podman and you will not notice the difference [3]
[1]https://linuxconfig.org/how-to-install-docker-in-rhel-8
[2]http://crunchtools.com/why-no-docker/
[3]https://developers.redhat.com/blog/2019/02/21/podman-and-buildah-for-docker-users/
Docker will not support RedHat 8, it will be installed as Podman.
So you can try it with Amazon linux2 instead of RedHat.
You have to create a new instance in AWS with Amazon linux2, then it will work.
Since docker is not officially supported by REHL8/CentOS8. You have to install it by additional steps.
This is a good article I have found in the internet, shows how to install docker in CentOS 8.
https://computingforgeeks.com/install-docker-and-docker-compose-on-rhel-8-centos-8
Related
I followed the steps to install docker on my EC2 instance which is based on Amazon AMI using the instructions from the official link - official docker installation on centos. I am getting the below error.
$ sudo yum update
........
$ sudo yum install docker-ce docker-ce-cli containerd.io
........
--------> Finished Dependency Resolution
Error: Package: 3:docker-ce-19.03.8-3.el7.x86_64 (docker-ce-stable)
Requires: systemd
Error: Package: 3:docker-ce-19.03.8-3.el7.x86_64 (docker-ce-stable)
Requires: libsystemd.so.0(LIBSYSTEMD_209)(64bit)
Error: Package: 3:docker-ce-19.03.8-3.el7.x86_64 (docker-ce-stable)
Requires: container-selinux >= 2:2.74
Error: Package: containerd.io-1.2.13-3.1.el7.x86_64 (docker-ce-stable)
Requires: systemd
Error: Package: 3:docker-ce-19.03.8-3.el7.x86_64 (docker-ce-stable)
Requires: libsystemd.so.0()(64bit)
Error: Package: containerd.io-1.2.13-3.1.el7.x86_64 (docker-ce-stable)
Requires: container-selinux >= 2:2.74
Where am I going wrong?
Solution in context of the image - Amazon Linux 2 AMI
One may need to remove the packages they installed using docker provided links
use the command here to remove all of that:-
sudo rm /etc/yum.repos.d/docker-ce.repo
And use the link given by AWS to install the docker here - https://docs.aws.amazon.com/AmazonECS/latest/developerguide/docker-basics.html
The content for that commands in that link are as below:-
Connect to your instance(Amazon Linux 2 AMI).
Update the installed packages and package cache on your instance.
sudo yum update -y
Install the most recent Docker Community Edition package.
sudo amazon-linux-extras install docker
Start the Docker service.
sudo service docker start
Add the ec2-user to the docker group so you can execute Docker commands without using sudo.
sudo usermod -a -G docker ec2-user
Log out and log back in again to pick up the new docker group permissions. You can accomplish this by closing your current SSH terminal window and reconnecting to your instance in a new one. Your new SSH session will have the appropriate docker group permissions.
Verify that the ec2-user can run Docker commands without sudo.
docker info
Use amazon-linux-extras to install docker
# install
sudo rm /etc/yum.repos.d/docker-ce.repo # if you have already tried in the wrong way
sudo amazon-linux-extras install docker
# enable on boot and start daemon
sudo systemctl enable docker
sudo systemctl start docker
# correct permissions
sudo usermod -a -G docker $USER
newgrp docker
docker ps
Amazon AMI best practices are to use their install procedures. You, of course, are at your liberty to do what best fits your needs:
https://docs.aws.amazon.com/AmazonECS/latest/developerguide/docker-basics.html
Figured it out because I had a similar issue an hour ago, and just realized I was doing it wrong:
https://serverfault.com/questions/836198/how-to-install-docker-on-aws-ec2-instance-with-ami-ce-ee-update
I installed docker using below link. May this be helping others
https://docs.aws.amazon.com/AmazonECS/latest/developerguide/docker-basics.html
I'm currently trying to set up a hyperledger fabric network using docker toolbox, based on the guide HERE
When it comes to "Starting up validating peers" step, I followed and entered ip add into the terminal, but it returns bash: ip: command not found. Any solution? I've tried ifconfig as well and it's the same issue, command not found.
Using Docker Toolbox on Windows 10 Home
Install ip command package for Ubuntu.
apt update
apt install iproute2
I have tried hostname -I. Working fine for me.No need to install a new package.
Unfortunately, your link has been broken (or it might be inaccessible from Iran). Although there is not enough evidence of which Linux OS you are trying to use, a solution is provided as follow work under .deb (e.g. Ubuntu) and .rpm (e.g. Fedora) package managers.
At first, update the container's repository:
Ubuntu:
apt-get update
CentOS:
yum update
Fedora:
dnf update
Secondly, install net-tools package.
Ubuntu:
apt-get install net-tools
CentOS:
yum install net-tools
Fedora:
dnf install net-tools
Lately, ifconfig has been replaced with ip command. So make sure to check both commands, some Linux distributions have not changed the command yet.
for command ip not found in centos 7, you can use yum install iproute -y to fix.
for command ifconfig not found in centos 7, you can use yum install net-tools -y to fix.
Although OP was on Windows 10. I landed on this question searching for a fix for macOS and didn't find this answer for a while. So I'm linking it here as well just in case
You can install ip tool on OS X via brew:
brew install iproute2mac
Your link doesn't work.
Do docker ps or docker images in GitBash to see if the docker containers and images are running.
I recommend installing Docker Community Edition if you are running Win 10. Make sure u have Hyper-V enabled.
OS: Ubuntu 16.04
Docker version: 1.11.2
I have already installed docker 1.11.2 on my Ubuntu and I want to upgrade it to 1.12. All the steps are as follows:
I download the deb pkg named docker-engine_1.12.3-0~xenial_amd64.
Execute command: dpkg -i docker-engine_1.12.3-0~xenial_amd64 but notes with errors:
docker-engine conficts with docker.io.docker.io (version 1.11.2-0ubuntu5~16.04) has already been installed .
So I have to remove docker first by using commands as below:
service docker stop
apt-get remove docker
apt-get remove --auto-remove docker
rm -rf /var/lib/docker
Go to step 2, but with the same errors.
So, I hope someone would help me solve this problem.
The conflicting packages (which fight over the same binary) are docker.io (from the distribution) and docker-engine (from Docker itself).
Your command above does apt-get remove ... docker. Which achieve nothing for the aforementioned problem.
I have different machines running 16.04 and some use docker.io (easier, no extra repo) whereas others use docker-engine. I am indifferent. Pick on, docker should work just fine.
Firstly restart the ubuntu server with linux command(sudo shutdown -r now), and run the command : apt-get -f install(this command is suggested by the error information), then I install the docker-engine by the following site(https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-16-04).
I want to install docker stable version in my suse system (version sles 12). For installing docker in suse system, need to add repository of docker.
I didn't found any url (repository url) for adding docker repository of version 1.6. I found docker version 1.12 but it is not working in my case. I removed docker repository now.
can anyone suggest me how I can add correct repository and install docker further in my system?
edit- sample commands and output
docker -v
Docker version 1.6.0, build 4749651
docker pull hello-world
FATA[0000] Cannot connect to the Docker daemon. Is 'docker -d' running on this host?
sudo docker pull hello-world
sudo: docker: command not found
You can use zypper to do that.
You have to adapt the repository url to your SUSE version. To find the correct package repository, please follow this link
https://software.opensuse.org/download.html?project=Virtualization%3Acontainers&package=docker
sudo zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers/openSUSE_Leap_15.0/Virtualization:containers.repo
sudo zypper dist-upgrade
sudo zypper update
sudo zypper install docker
Source : https://w3blog.fr/en/2019/03/25/install-docker-open-source-on-linux-suse/
You will find Docker 1.6 at
https://get.docker.com/builds/Linux/x86_64/docker-1.6.0.tgz
The general doc for installing docker in Suse is available at
https://docs.docker.com/engine/installation/linux/SUSE/
CentOS version: lsb_release -d
Description: CentOS release 6.5 (Final)
My repo looks like this
cat /etc/yum.repos.d/docker.repo
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
I have some old version of docker and when I try to install it, I get an error. When I try the skip option, even after that the docker service does not even exist on my centos yum install docker-engine has the following problem
Processing Conflict: docker-engine-1.7.1-1.el6.x86_64 conflicts docker-io
--> Finished Dependency Resolution
Error: docker-engine conflicts with docker-io-0.6.2-1.el6.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest"
Then service docker start does not exist when I try to start it.
How do I do clean of all docker stuff and do this from scratch?
Docker's official release no longer supports RHEL/Centos 6. I think that stopped with 1.7.1 and the official release is at 1.10. I would suggest updating to Centos 7 or anything with a 3.10+ kernel to use the latest docker-engine as it has improved quite a bit.
If you are stuck with Centos 6.5 then either continue with the the EPEL docker-io package or install the 1.7.1 rpm.
Completely remove the Centos 6 package
yum remove docker-io
Remove all docker data (and never get it back!)
rm -rf /var/lib/docker
Remove the Docker repo config
rm /etc/yum.repos.d/docker.repo
Either install docker-io again
yum install docker-io
Or install the docker-engine-1.7.1 rpm
yum install http://yum.dockerproject.org/repo/main/centos/6/Packages/docker-engine-1.7.1-1.el6.x86_64.rpm
Start it and docker
service docker start
docker run hello-world