Install SCS Offline

Important

Copy the local repo (repo.tar) and Pause Container (k8s.gcr.io_pause_3.2.tar) to the RHEL/Rocky Linux 8 or RHEL/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.

Tip

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

Warning

The external IP addresses used in this step do not have to resolve to the actual hosts shown, but they must resolve to some reachable host. Also, they must not be on the internal or private network used by the storage cluster.

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.