functions/Networking/TroubleshootNetworking.ps1
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<#
.SYNOPSIS TroubleshootNetworking .DESCRIPTION TroubleshootNetworking .INPUTS TroubleshootNetworking - The name of TroubleshootNetworking .OUTPUTS None .EXAMPLE TroubleshootNetworking .EXAMPLE TroubleshootNetworking #> function TroubleshootNetworking() { [CmdletBinding()] param ( ) Write-Verbose 'TroubleshootNetworking: Starting' # https://www.tecmint.com/things-to-do-after-minimal-rhel-centos-7-installation/3/ WriteToConsole " open ports " sudo nmap 127.0.0.1 WriteToConsole "network interfaces " sudo ip link show WriteToConsole "services enabled in firewall" sudo firewall-cmd --list-services WriteToConsole "ports enabled in firewall" sudo firewall-cmd --list-ports WriteToConsole "active zones" sudo firewall-cmd --get-active-zones WriteToConsole "available services to enable" sudo firewall-cmd --get-services WriteToConsole "all rules in firewall" sudo firewall-cmd --list-all sudo firewall-cmd --zone trusted --list-all WriteToConsole "iptables --list" sudo iptables --list WriteToConsole "checking DNS server " $ipfordnsservice = $(kubectl get svc kube-dns -n kube-system -o jsonpath="{.spec.clusterIP}") sudo dig "@${ipfordnsservice}" kubernetes.default.svc.cluster.local +noall +answer sudo dig "@${ipfordnsservice}" ptr 1.0.96.10.in-addr.arpa. +noall +answer WriteToConsole "recent rejected packets " sudo tail --lines 1000 /var/log/messages | grep REJECT Write-Verbose 'TroubleshootNetworking: Done' } Export-ModuleMember -Function 'TroubleshootNetworking' |