Objective/Need: Bring up a 4 node Kubernetes cluster of which two are agent nodes and two are server cum agent nodes. – Why this kind of setup – No specific reason, need to learn bringing up Kubernetes cluster using K3s. I have no idea about sizing for nodes. All sizing information used in this article…
Tag: Debian
Orchestrating Guest VMs using simple scripts (KVM)
Objective / Need: Should be able to pass VM parameters (vcpu, memory, management IP, gateway, DNS server) should be able to bring up a VM of any distribution in a few seconds. To start with Ubuntu 20.04 and Debian Bullseye. Note: We can make use of the cloud images available on the internet and the…
Installing KVM
Installing KVM on Debian: Simple and easy – First, install the required packages apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virtinst libvirt-daemon virt-manager -y Bridge interfaces allow the guest VMs to communicate through the HOST., and connect to the real network. You will first need to allow IP forwarding in the kernel params. Edit /etc/sysctl.conf and…
Installing NFS Server
The objective is to configure the NFS server on one of the servers in the LAB. Creating the NFS client-server setup is a simple task that can be performed in a few steps – installation, export, mounting, and access. On the server install the required package apt install -y nfs-kernel-server Create a directory that gets…
Install and configure OpenLDAP Server
Configure hostname and FQDN for the VM/system which will be used for LDAP server. (Reference to example.com is to mask the actual usage) root@ldap:~# hostname –fqdn ldap.example.com root@ldap:~# cat /etc/hosts 127.0.0.1 localhost 10.1.2.22 ldap.example.com ldap The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters root@ldap:~# Install OpenLDAP…
NIC Bonding
Upgraded the lab by adding a new server, primarily hosting an NFS server. Upgraded all servers by adding 2 x 10G NICs in all the servers connected via Microtik CRS309 Desktop Router (Using SwitchOS and not RouterOS) – supports LACP. On the server-side decided to bond both the 10G NICs so that better network throughput…
dnsmasq : For my local network
Need was to have a DNS service serving my local network name resolutions. After surfing on multiple how tos, found dnsmasq would suffice my needs. Install dnsmasq #apt install -y dnsmasq Edit the configuration file and updated the following entries (uncomment if commented) # Never forward plain names (without a dot or domain part) domain-needed…