Install SCS Offline

Important

Copy the local repo (repo.tar) and Pause Container (k8s.gcr.io_pause_3.2.tar) to the CentOS 7 server to install SCS Server 15.

Create a new working directory for the SCS Installation.
```
mkdir /root/datacore
```
Copy repo.tar and k8s.gcr.io_pause_3.2.tar to “/root/datacore/”.

Create a local repo - “/etc/yum.repos.d/local.repo”.

[local]
name=Everything we need to install scs
baseurl=file:///root/datacore/packages
enabled=true
gpgcheck=0

Create a local repo for installing Podman. Example: “/etc/yum.repos.d/podman.repo“.

Note

Verify the file name matches exactly.

[podman]
name=Dependencies for install podman 3.0.1
baseurl=file:///root/datacore/podman_packages
enabled=true
gpgcheck=0

Disable base, updates, extras, and CentOSPlus repositories. Add enable=0 to [base], [updates], [extras] and [centosplus] session of “/etc/yum.repos.d/CentOS-Base.repo” or rename it.

[base]
name=CentOS-$releasever - Base 
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra 
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 
enabled=0 

#released updates 
[updates] 
name=CentOS-$releasever - Updates 
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra 
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/ 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 
enabled=0 

#additional packages that may be useful 
[extras] 
name=CentOS-$releasever - Extras 
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra 
#baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ 
gpgcheck=1 
enabled=0 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 

#additional packages that extend functionality of existing packages 
[centosplus] 
name=CentOS-$releasever - Plus 
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra 
#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/ 
gpgcheck=1 
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

Flush repo metadata.
```
yum clean all
yum repolist
```
Install an NTP Server. Do not use Active Directory as an NTP Server Source.
“The W32Time service is not a full-featured NTP solution that meets time-sensitive application needs.”
“The W32Time service cannot reliably maintain sync time to the range of 1 to 2 seconds. Such tolerances are outside the design specification of the W32Time service.”
From Microsoft KB 939322
```
yum -y install chrony
```
Configure sync with local NTP Server.

Important

NTP does not sync with the Active Directory.

Add below hosts records to /etc/hosts

{SCS_External_IP}    www.datacore.com
{SCS_External_IP}    k8s.grc.io

Install Podman 3.0.1.
```
yum -y install podman
```
Verify the Podman 3.0.1 installation is successful.
```
podman -v
```
The podman version should be 3.0.1

Load Pause Container.

podman image load -i /root/datacore/k8s.gcr.io_pause_3.2.tar

Verify the Pause Container is loaded and the container TAG label is 3.2.
```
podman images
```
REPOSITORY TAG IMAGE ID CREATED SIZE
k8s.gcr.io/pause 3.2 80d28bedfe5d 22 months ago 688 kB
Refer to https://caringo.atlassian.net/wiki/spaces/public/pages/3042345098/Online+SCS+Installation and follow step 5 onwards.

Note that the IP addresses supplied for the hostnames in /etc/hosts, in step #9 above do not have to resolve to those actual host over the Internet, but they must resolve to some host on a network that in not the internal, private network used by the storage cluster.