jan 31

Preparation for openshit origin 3.7 install – part 1 – environment installation

By razorx in Razorx.hu

Install Vmware workstation.
Create a vm with nat network interfaces
Install basic centos 7

Set up the network

vi /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPADDR=<ip of ansible server>
NETMASK=<your netmask>
GATEWAY=<your gateway>
NAME=ens33
UUID=cc1db5d0-d10e-463f-aac6-ea5a2140f3a1
DEVICE=ens33
ONBOOT=yes

Set namserver on resolv.conf

vi /etc/resolv.conf
nameserver <your router ip address>

Update the packages, add extra repos and install some tools

yum update
yum install epel-release.noarch
yum install centos-release-openshift-origin37.noarch
yum install mc htop bindutils psmisc bind-utils
reboot

Check for updates
```
yum update
```
Shutdown the server
Clone the servers to master, infra, and worker1
Start the vms an set up the ip addresses of the vm’s.
I use the followings:
1. ansible: 192.168.217.3
2. master: 192.168.217.10
3. infra: 192.168.217.11
4. worker1: 192.168.217.12

Generate ssh keys for ansible

[root@localhost ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:r74tpXOLmpvv5KUCjMH7pHwysTNSQukVdR5jwo7jlXw root@localhost.localdomain
The key's randomart image is:
+---[RSA 2048]----+
| oo = |
| . .= o |
| .. = .. |
| oo+ = E |
|o o=o . S |
|..=.+ .. |
| + * . .oo |
|. O o .=+*. |
| . * =BX=o. |
+----[SHA256]-----+
[root@localhost ~]# ll .ssh/
total 8
-rw-------. 1 root root 1675 Jan 31 21:58 id_rsa
-rw-r--r--. 1 root root 408 Jan 31 21:58 id_rsa.pub

I’ll continue the ansible configuration and basic server preparation with ansible.