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Kubernetes Red hat linux

Deploy NGINX Ingress Controller on AKS Kubernetes using Helm

Step 1 – Allocate Public IP for Ingress The following command will allocate Public IP : az network public-ip create –resource-group [resource-group] –name [name for public IP] –sku Standard –allocation-method static –query publicIp.ipAddress -o tsv Step 2 – Install NGINX Ingress Controller using Helm An ingress controller, because it is a core component of Kubernetes, […]


Docker tutorials sinhala
DevOps Red hat linux

Deploy a Docker registry server with Authentication

Before you can deploy a registry, you need to install Docker on the host. A registry is an instance of the registry image, and runs within Docker. Install docker service with bellow commands. dnf config-manager –add-repo= dnf install -y docker-ce –nobest systemctl enable –now docker dockerstatus=`systemctl status docker | grep “active (running)”` echo “Docker Service […]


Red hat linux

Setup SCTP In Red Hat / CentOS Linux 8

1. Install kernel-modules-extra and SCTP for the currently installed kernel; yum install kernel-modules-extra-`uname -r` yum install -y lksctp-tools lksctp-tools-devel lksctp-tools-doc 2. Add sctp to /etc/modules-load.d/* to load sctp before systemd-sysctl.service during boot. Loading sctp before systemd-sysctl.service allows the sctp sysctl.conf settings to be effective; # cat /etc/modules-load.d/sctp.conf sctp 3. sctp is blacklisted by default on […]

MySQL Red hat linux

Setting up Galera Arbitrator

Galera Arbitrator <> is a member of Percona XtraDB Cluster that is used for voting in case you have a small number of servers (usually two) and don’t want to add any more resources. Galera Arbitrator does not need a dedicated server. It can be installed on a machine running some other application. Just make sure it has […]

nagios Red hat linux

Standard Macros in Nagios

Standard macros that are available in Nagios are listed here. On-demand macros and macros for custom variables are described here. Macro Validity Although macros can be used in all commands you define, not all macros may be “valid” in a particular type of command. For example, some macros may only be valid during service notification commands, […]