Ansible_Install_Prechek

Check all nodes meet requirements for OpenShift and CPD installation

Setup

1. Clone the git repo

	git clone https://github.com/IBM-ICP4D/Ansible_Install_Prechek.git

2. Go to the Ansible_Install_Prechek directory

	cd Ansible_Install_Prechek

3. Update the inventory file "hosts_openshift" according to the cluster

	vi hosts_openshift

Example of hosts_openshift file:

[master]
9.62.100.* private_ip=10.87.103.68 name=master-03 type=master ansible_ssh_user=root ansible_ssh_pass=
9.62.100.* private_ip=10.87.103.123 name=master-02 type=master ansible_ssh_user=root ansible_ssh_pass=
9.62.100.* private_ip=10.87.103.121 name=master-01 type=master ansible_ssh_user=root ansible_ssh_pass=
[worker]
9.62.100.* private_ip=10.87.103.117 name=worker-01 type=worker ansible_ssh_user=root ansible_ssh_pass=
9.62.100.* private_ip=10.87.103.108 name=worker-03 type=worker ansible_ssh_user=root ansible_ssh_pass=
9.62.100.* private_ip=10.87.103.96 name=worker-02 type=worker ansible_ssh_user=root ansible_ssh_pass=
[loadbalancer]
9.62.100.* private_ip=10.87.103.66 name=loadbalancer-01 type=proxy ansible_ssh_user=root ansible_ssh_pass=
	

Usage

This script checks if all nodes meet requirements for OpenShift and CPD installation.
Arguments: 
    --install=[ocp|cpd]                         To specify installation type
    --fix                                       To address any issue in the cluster 
    --help                                      To see help 

Example: 
./pre_install_check_v25.sh --install=ocp
./pre_install_check_v25.sh --install=ocp --fix

Validation

	Requirements	Check	Fix
OpenShift Validation
OS Distribution	RedHat	X
OS Version	7.6, 7.7	X
OS Kernel Patch	3.10.0-957, 3.10.0-1062	X
Processor type	x86_64	X
SSE 4.2 Instruction Supported	SSE4_2	X
Kernel Semaphore Parameter	"kernel.sem = 250 1024000 32 4096"	X	X
Kernel Virtual Memory Parameter	"vm.max_map_count=262144"	X	X
Pre-existing Cron Job	Stop existing cron jobs	X
SeLinux enforcing	Enforcing	X	X
Clock Sync	Synchronize computer system clock on all nodes	X	X
Firewall disabled	Firewalld needs turn off. Will turn it on later.	X	X
Hostname in Lowercase Characters	Hostname must be all lowercase	X
Size of Root Partition	50 Gb	X
Disk Latency	50 Kb/Sec	X
Disk Throughput	1 Gb/5 Sec	X
Docker Folder Defined	/var/lib/docker exists	X	-
Docker Container Storage Size	200 Gb	X
XFS FTYPE for Overlay2 Drivers	Must be XFS type filesystem	X
Connectivity to IBM Artifactory Server	Not mandatory	X
Connectivity to Redhat Artifactory Server	registry.redhat.io	X
Default Gateway	Route for default gateway exists	X
DNS Configuration	DNS must be enabled	X
Resolving hostname via DNS	Hostname resolution enabledn	X
IPV4 IP Forwarding Set to Enable		X	X
CPU RAM Size		X