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Kubernetes cluster Administration notes

Kubectl Show yaml kubectl get deployments/bookstack -o yaml Scale kubectl scale deployment/na...

GlusterFS + Heketi [Ubuntu 18.04]

Requirement to this guide : Having an empty / unused partition available for configuration on all...

Cisco ASA Site to Site

Verification: NAT or transparent mode Value should return ( Firewall mode: Router ) show fire...

Kubernetes install with kubeadm

Network Example 10.10.11.20 kubemaster kubemaster.myhypervisor.ca 10.10.11.30 kube1 kube1.myhyp...

Cisco ASA Cli

Static NAT (SNAT) object network obj-192.168.1.100  host 192.168.1.100  nat (inside,outside) s...

IPMI (SuperMicro)

Update your firmwareftp://ftp.supermicro.com/utility/IPMI%20FW%20flash%20tools/SMT/ ./lUpdate.sh...

Powershell

Change vswitch from internal to external Set-VMSwitch -Name vSwitch -NetAdapterName bond0 If yo...

Fail2Ban

What is Fail2Ban: Fail2Ban is an intrusion prevention tool to prevent brute-force attacks or h...

LAN Routing Remote Access Service (RAS)

Once done add routes on each hosts route ADD -p <destination_network> MASK &...

Openstack commands

  Nova: List of instances openstack server list nova list Details on a specific instan...

DRBD + Pacemaker & Corosync MySQL Cluster Centos7

On Both Nodes Host file vim /etc/hosts 10.1.2.114 db1 db1.localdomain.com10.1.2.115 db2 db...

MegaCli

Check raid card: lspci | grep -i raid Ubuntu/Debian: apt-get install alien # Convert to .deb ...

AVMA - Hyper-V Automatic Virtual Machine Activation

Open CMD/Powershell slui 3 Guest Operating System Key Windows Server 2012 R2 Essent...

DRBD + Pacemaker & Corosync NFS Cluster Centos7

On Both Nodes Host file vim /etc/hosts 10.1.2.114 nfs1 nfs1.localdomain.com10.1.2.115 nfs2 n...

Snapshots And Templates

Create new snapshot Find UUID xe vm-list Create snapshot xe vm-snapshot new-name-label="<n...

Site-to-Site OpenVPN with routes

Install https://github.com/angristan/openvpn-install First, get the script and make it executab...

Juniper Cli

Display Show Display configuration show configuration | display set Show display detail config...

Dell PowerConnect Switch CLI

Adding a VLAN to a port-channel Add the VLAN to the DB vlan database vlan 4082 Check ARP resp...

Adding Adapter on vSwitch

List Adapter Get-VMNetworkAdapterVlan -ManagementOS Adding Adapter Add-VMNetworkAdapter -Mana...