dependency error while installing docker 1.12 in rhel 7 - linux

Question

Aim: Install latest docker (v1.12) in rhel 7 in offline mode
I got dependency error while installing docker 1.12 in rhel 7, and I
tried to find those dependencies in internet but didn't found those
dependencies except selinux-policy rpm.
I tried to install after yum update.
I found dependencies of docker 1.7 on internet, installed in rhel 6.7
but could not make same way for docker 1.12 in rhel 7
I tried below things
Installed docker 1.12 when system(test machine) is connected to internet and after installing docker 1.12 all dependencies will cache in /var/cahce/yum/rhel7/ location and search for above dependencies but didn't found.
Crated local yum repo and mounted iso file and then did yum update
and tried to install docker but still give same dependencies error.
I'm not sure how above steps are correct or right procedure, I just tired but anything didn't work.
my production environment does not have internet connection and it has only intranet connection only.
Can some one provide or advice me how to solve this and how to proceed this kind of problems?
Thanks in advance!

Answer 1

I'm kind of surprised you can't find at least the non-docker packages here as these come from standard CentOS repositories. In general, I'd use something like:
# yum provides "*/<filename>"
e.g.
# yum provides "*/libsystemd.so.*"
This obviously won't help if you've not configured the repositories on your target system, but it's pretty easy to run a Vagrant VM and see what's required there.
$ vagrant init bento/centos-7.2
$ vagrant ssh
then follow the docs at https://docs.docker.com/engine/installation/linux/centos/:
$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
and install it:
$ sudo yum install docker-engine
On mine, this gives:
[vagrant#localhost ~]$ sudo yum install docker-engine
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.ukhost4u.com
* extras: mirror.vorboss.net
* updates: mirror.vorboss.net
Resolving Dependencies
--> Running transaction check
---> Package docker-engine.x86_64 0:1.12.1-1.el7.centos will be installed
--> Processing Dependency: docker-engine-selinux >= 1.12.1-1.el7.centos for package: docker-engine-1.12.1-1.el7.centos.x86_64
--> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-engine-1.12.1-1.el7.centos.x86_64
--> Processing Dependency: libltdl.so.7()(64bit) for package: docker-engine-1.12.1-1.el7.centos.x86_64
--> Running transaction check
---> Package docker-engine-selinux.noarch 0:1.12.1-1.el7.centos will be installed
---> Package libseccomp.x86_64 0:2.2.1-1.el7 will be installed
---> Package libtool-ltdl.x86_64 0:2.4.2-21.el7_2 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
============================================================================================================
Package Arch Version Repository Size ============================================================================================================
Installing:
docker-engine x86_64 1.12.1-1.el7.centos dockerrepo 19 M Installing for dependencies:
docker-engine-selinux noarch 1.12.1-1.el7.centos dockerrepo 28 k libseccomp x86_64 2.2.1-1.el7 base 49 k libtool-ltdl x86_64 2.4.2-21.el7_2 updates 49 k
Transaction Summary
============================================================================================================
Install 1 Package (+3 Dependent packages)
Total download size: 19 M
Installed size: 79 M
Running that yum provides command I gave above shows you that e.g. libsystemd.so* is in the systemd-libs package and available in the "updates" repo .. see http://mirror.centos.org/centos/7/updates/x86_64/Packages/

Answer 2

Try this command:
yum install libtool-ltdl
After this re-run installation command.
This will be done automatically, if you have "docker-ce" repository.
Good luck!