How to Install Docker on Oracle Linux 7

           In this article, we will be using   Oracle Linux yum server to provide the software updates. With following steps, you will be able to install the latest Docker release.

1. First, update your Oracle Linux 7 instance with correct yum setting. To install the latest Docker release you need ol7_latest, ol7_uekr4, ol7_UEKR5 and ol7_addons enabled.

[root@dockerserver ~]# cd /etc/yum.repos.d/
[root@dockerserver yum.repos.d]# wget http://yum.oracle.com/public-yum-ol7.repo
--2021-04-27 14:42:20-- 
http://yum.oracle.com/public-yum-ol7.repo
Resolving yum.oracle.com (yum.oracle.com)... 72.247.97.172
Connecting to yum.oracle.com
(yum.oracle.com)|72.247.97.172|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 16402 (16K) [text/plain]
Saving to: ‘public-yum-ol7.repo’
 
100%[====================================================================================>]
16,402      --.-K/s   in 0s
 
2021-04-27 14:42:21 (153 MB/s) - ‘public-yum-ol7.repo’ saved
[16402/16402]
 


























[root@dockerserver yum.repos.d]#

2. vi public-yum-ol7.repo and change "enabled=0" to "enabled=1" for all four repos as given above and save the file.

[root@dockerserver yum.repos.d]# vi public-yum-ol7.repo
[ol7_latest]
name=Oracle Linux $releasever Latest ($basearch)
baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/latest/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1
 
--
[ol7_UEKR5]
name=Latest Unbreakable Enterprise Kernel Release 5 for
Oracle Linux $releasever ($basearch)
baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/UEKR5/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1
 
[ol7_UEKR4]
name=Latest Unbreakable Enterprise Kernel Release 4 for
Oracle Linux $releasever ($basearch)
baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1
 
--
[ol7_addons]
name=Oracle Linux $releasever Add ons ($basearch)
baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/addons/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1


























































enabled=1

3. Next you simply use yum install to start the installation.

yum install docker-engine -y

[root@dockerserver yum.repos.d]# yum install docker-engine
-y
Loaded plugins: langpacks, ulninfo
Resolving Dependencies
--> Running transaction check
---> Package docker-engine.x86_64 0:19.03.11.ol-8.el7
will be installed
--> Processing Dependency: container-selinux >= 2:2.77
for package: docker-engine-19.03.11.ol-8.el7.x86_64
--> Processing Dependency: containerd for package:
docker-engine-19.03.11.ol-8.el7.x86_64
--> Processing Dependency: runc for package:
docker-engine-19.03.11.ol-8.el7.x86_64
--> Processing Dependency: docker-cli for package:
docker-engine-19.03.11.ol-8.el7.x86_64
--> Running transaction check
---> Package container-selinux.noarch 2:2.107-3.el7 will
be installed
---> Package containerd.x86_64 0:1.3.9-2.el7 will be
installed
---> Package docker-cli.x86_64 0:19.03.11.ol-8.el7 will
be installed
---> Package runc.x86_64 0:1.0.0-93.rc93.el7 will be
installed
--> Processing Dependency: criu for package:
runc-1.0.0-93.rc93.el7.x86_64
--> Running transaction check
---> Package criu.x86_64 0:3.12-2.el7 will be installed
--> Finished Dependency Resolution
 
Dependencies Resolved
 
==============================================================================================================================
 Package                           Arch                   Version                            Repository                  Size
==============================================================================================================================
Installing:
 docker-engine                     x86_64                 19.03.11.ol-8.el7                  ol7_addons                  21 M
Installing for dependencies:
 container-selinux                 noarch                 2:2.107-3.el7                      ol7_addons                  39 k
 containerd                        x86_64                 1.3.9-2.el7                        ol7_addons                  27 M
 criu                              x86_64                 3.12-2.el7                         ol7_latest                 452 k
 docker-cli                        x86_64                 19.03.11.ol-8.el7                  ol7_addons                  34 M
 libnet                            x86_64                 1.1.6-7.el7                        ol7_latest                  57 k
 protobuf-c                        x86_64                 1.0.2-3.el7                        ol7_latest                  27 k
 runc                              x86_64                 1.0.0-93.rc93.el7                  ol7_addons                 3.7 M
 
Transaction Summary
==============================================================================================================================
Install  1 Package (+7
Dependent packages)
 
Total download size: 87 M
Installed size: 355 M
Downloading packages:
(1/8): container-selinux-2.107-3.el7.noarch.rpm                                                       
|  39 kB  00:00:00
(2/8): criu-3.12-2.el7.x86_64.rpm                                                                     
| 452 kB  00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing :
2:container-selinux-2.107-3.el7.noarch                                                                    
1/8

Installed:
  docker-engine.x86_64
0:19.03.11.ol-8.el7
 
Dependency Installed:
 
container-selinux.noarch 2:2.107-3.el7        containerd.x86_64 0:1.3.9-2.el7        criu.x86_64 0:3.12-2.el7
  docker-cli.x86_64
0:19.03.11.ol-8.el7         libnet.x86_64
0:1.1.6-7.el7           
protobuf-c.x86_64 0:1.0.2-3.el7
  runc.x86_64
0:1.0.0-93.rc93.el7
 
Complete!


















































































































































































[root@dockerserver yum.repos.d]#

Find Articles on troubleshooting Other OCI issues.

4. Now Start and enable Docker Service.

[root@dockerserver yum.repos.d]# systemctl start docker
[root@dockerserver yum.repos.d]# systemctl enable docker
Created symlink from
/etc/systemd/system/multi-user.target.wants/docker.service to
/usr/lib/systemd/system/docker.service.


[root@dockerserver yum.repos.d]# systemctl status docker


● docker.service - Docker Application Container Engine
   Loaded: loaded
(/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running)
since Tue 2021-04-27 16:58:40 GMT; 20s ago