How to Install Docker 1.9+ in Centos 6.5

How to install docker 1.9+ in CentOS 6.5?

CentOS 6 and RHEL 6 are no longer supported, and the last build for them is docker 1.7.1.

That page of the documentation (https://docs.docker.com/engine/installation/centos/) also mentions;

Docker runs on CentOS 7.X
Docker requires a 64-bit installation regardless of your CentOS version. Also, your kernel must be 3.10 at minimum, which CentOS 7 runs.

The kernel that those distro's are running on (2.6.x) is over 13 years old, and although newer features are back-ported to them by Red Hat, they lack certain options that are required by Docker, and have proven to be unstable, and unsuitable for production.

I encourage you to upgrade upgrade to CentOS 7.x if you want to (keep) using Docker.

Options to use latest docker on centos 6?

You can try to use a static binary to run docker, but this is all at your own risk; CentOS 6 runs on kernel 2.6, which is 13 years old now. That kernel misses various things needed to run Docker (e.g. Overlay networking is not supported), and is known for having some issues.

Note that running docker-in-docker may get you around "installing" docker 1.10, but will still run on the same kernel, so you'll end up with the same issues

Install docker on RedHatLinux 6.7

Below steps do work for Docker to be installed on OEL 6.10 with a user having super user privileges.

1. Create a user with SUDO Access as suggested in Red-Hat Docs ([Link][1] speaks well on this process). For instance I created an user as docker with group as docker.

   groupadd docker  
   useradd -m -g docker docker
   

2. Add docker repository for installing latest copy of Docker for RHEL/Centos 6

   yum update -y  
   yum install epel-release  
   vi /etc/yum.repos.d/docker.repo   
   

3. Add below contents to /etc/yum.repos.d/docker.repo

   [docker-repo]  
   name=Docker Repo  
   baseurl=https://yum.dockerproject.org/repo/main/centos/6/  
   enabled=1  
   gpgcheck=1  
   gpgkey=https://yum.dockerproject.org/gpg  
   

4. Switch to "docker" user and execute below commands:

   sudo yum install -y docker-engine

5. Post Installation start docker using below commands.

   sudo chkconfig docker on  
   
   sudo service docker start  
   Starting cgconfig service:                                 [  OK  ]  
   Starting docker:                                           [  OK  ]  
   
   sudo service docker status  
   docker (pid  26925) is running...  
   
   ps -ef | grep docker  
   root     25590 14123  0 Jul27 ?        00:00:00 sshd: docker [priv]  
   docker   25594 25590  0 Jul27 ?        00:00:00 sshd: docker@pts/1  
   docker   25595 25594  0 Jul27 pts/1    00:00:00 -bash  
   root     26925     1  2 00:00 pts/1    00:00:00 /usr/bin/docker -d  
   docker   27106 25595  0 00:00 pts/1    00:00:00 ps -ef  
   docker   27107 25595  0 00:00 pts/1    00:00:00 grep docker  
   
   docker ps -a  
   CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES  
   

   [1]: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/2/html/Getting_Started_Guide/ch02s03.html

How to install docker specific version

Got the answer from this github issue comment.

Summary of above commit:-

echo deb http://get.docker.com/ubuntu docker main > /etc/apt/sources.list.d/docker.list

apt-key adv --keyserver pgp.mit.edu --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9

apt-get update
apt-get install -y lxc-docker-1.3.3

If permission issue then use sudo as:

echo deb http://get.docker.com/ubuntu docker main | sudo tee /etc/apt/sources.list.d/docker.list

sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9

sudo apt-get update
sudo apt-get install -y lxc-docker-1.3.3

Bonus Tip:

Don't know which version? Then hit Tab after lxc-docker- as:

sudo apt-get install -y lxc-docker-<Hit Tab here>

to see list of available docker versions.

How to install docker-compose on Linux RHEL 6.6?

RHEL 6 is not recommended and not supported for Docker use.

There was many addition made to recent version of Linux kernels that allows Docker, but they are missing on RHEL 6 because it is designed to be an enterprise system with very long term support (10 years).

Simply put it is too old, and Red Hat themselves aren't porting Docker on it.

Docker upgrades failing due to conflicts

From this message:

docker-engine-selinux conflicts with docker-selinux

I suspect you previously had the Red Hat distributed version of Docker installed, which installs docker-selinux. The official Docker packages also install a similar package (docker-engine-selinux) and that conflicts with the package you already have installed.

The best approach would be to uninstall the existing docker version (including the docker-selinux package), and then install docker-engine, following the instructions in the documentation; https://docs.docker.com/engine/installation/linux/centos/

Is it possible to install scip on centos 6.5

Yes, it is possible to build SCIP on CentOS 6.5.

How to upgrade docker-compose to latest version

First, remove the old version:

If installed via apt-get

sudo apt-get remove docker-compose

If installed via curl

sudo rm /usr/local/bin/docker-compose

If installed via pip

pip uninstall docker-compose

Then find the newest version on the release page at GitHub or by curling the API and extracting the version from the response using grep or jq (thanks to dragon788, frbl, and Saber Hayati for these improvements):

# curl + grep
VERSION=$(curl --silent https://api.github.com/repos/docker/compose/releases/latest | grep -Po '"tag_name": "\K.*\d')

# curl + jq
VERSION=$(curl --silent https://api.github.com/repos/docker/compose/releases/latest | jq .name -r)

Finally, download to your favorite $PATH-accessible location and set permissions:

DESTINATION=/usr/local/bin/docker-compose
sudo curl -L https://github.com/docker/compose/releases/download/${VERSION}/docker-compose-$(uname -s)-$(uname -m) -o $DESTINATION
sudo chmod 755 $DESTINATION

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