ApOgEE

Podman Survive Reboot

Docker adalah service dalam server manakala podman pula bukan service. Perbezaan antara Docker dan Podman dalam situasi ini ialah apabila kita reboot server.

Bila kita guna Docker, semua container yang run sebelum reboot akan run balik bila kita reboot server dan service docker kembali running. Tapi ini tak berlaku bila kita guna podman sebab podman bukanlah service.

Oleh itu, kita kena jadikan podman sebagai service.

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Podman Container Configuration for ClusterControl with Custom User and SSH

This document outlines how to configure a Podman container for ClusterControl with a custom user and SSH access.

1. Pulling the Image:

podman pull docker.io/severalnines/clustercontrol:latest

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Instructions for configuring MariaDB and MySQL performance :-

1. File Modification:

   • Open the /etc/mysql/mariadb.cnf or my.cnf file (note that my.cnf is a soft link to mariadb.cnf).
   • Add the following configuration options:

   # Provider specific configuration options
   wsrep_provider_options="gcache.size=1024M;gmcast.segment=0;gcache.recover=yes"

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#!/bin/bash
# Harisfazillah Jamel - 20211216
# Part of script from https://wiki.lyrasis.org/display/DSPACE/Idle+In+Transaction+Problem
# Idle In Transaction Problem

pgprocess_array=( $( /usr/bin/pgrep -f 'idle in transaction' ) )

/usr/bin/pgrep -f 'idle in transaction' | wc -l | logger

for r in "${pgprocess_array[@]}"; do

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Cluster Control On Centos 8 Using Podman

https://severalnines.com/download-clustercontrol-database-management-system

https://severalnines.com/docs/user-guide/ui.html#import-existing-server-cluster

https://severalnines.com/docs/installation.html

https://severalnines.com/product/clustercontrol/clustercontrol-community-edition

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MySQL Directory Move Into New Partition (Example /home)

Login as root or any user that NOT using /home stop mariadb service such as systemctl stop MariaDB

Make sure SELINUX is permissive mode. View file /etc/selinux/config

Step 1 - Copy /home Contents

To backup the contents of /home, do the following:

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Installing And Setup Streamsets Using Podman For Centos 8

StreamSets Data Collector is open source software for building dataflows quickly and easily, spanning on-premises, multi-cloud and edge infrastructure.

It has an advanced and easy to use User Interface that allows data scientists, developers and data infrastructure teams easily create data pipelines in a fraction of the time typically required to create complex ingest scenarios.

To learn more, check out https://github.com/streamsets/datacollector

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Filebeat For Iptables Centos 7 And Iptables using UFW For Ubuntu 18.04

1) Enable firewalld log

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/configuring_logging_for_denied_packets

firewall-cmd --get-log-denied
off

firewall-cmd --set-log-denied=all

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Demo use case: integrating a COVID-19 tracker API with the Elastic Stack plus story telling with Kibana

https://medium.com/@quoeamaster/use-case-integrating-a-covid-19-tracker-api-with-the-elastic-stack-plus-story-telling-with-kibana-8805cb67678

Create the pipeline in the Elasticsearch before start the filebeat.

=== Update for filebeat

filebeat.inputs:
- type: log

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### Terima Kasih Kepada Amir Haris Ahmad, Localhost Sdn Bhd
### kerana izinkan saya gunakan servers ujian mereka di Digital Ocean
### dan team beliau dengan berkongsi pengalaman dan pandangan mereka.
###
### Untuk saya menguji bruteforce attack log kepada syslog dengan fail2ban
###
### Server telah dipasang dengan fail2ban dan SSH dibuka dengan port 22.
### SSH tidak membenarkan module password dan hanya digital cert.
###
### Filebeat telah digunakan untuk mengumpulkan log.