- Видео 16
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Linuxtech
Добавлен 14 ноя 2022
Linux Administration full course with examples. Dockers and containers.
kubernetes ReplicaSet and DaemonSet controllers
Kubernetes, an open-source container orchestration platform, provides several controllers to manage and maintain the desired state of applications. Two essential controllers for managing pod replicas are ReplicaSet and Replication Controller. While they share the common goal of ensuring a specified number of pod replicas, there are key differences between them.
Replication Controller:
A Replication Controller is one of the older controllers in Kubernetes and is responsible for maintaining a specified number of replicas for a pod. It uses the replicas field to define the desired number of identical pod replicas.
In this example, the Replication Controller ensures that three replicas of the po...
Replication Controller:
A Replication Controller is one of the older controllers in Kubernetes and is responsible for maintaining a specified number of replicas for a pod. It uses the replicas field to define the desired number of identical pod replicas.
In this example, the Replication Controller ensures that three replicas of the po...
Просмотров: 44
Видео
Kubernetes concepts: Static Pods and Replication Controller
Просмотров 3514 дней назад
Static Pods: Static pods are pods created and managed by kubelet daemon on a specific node without API server observing them. If the static pod crashes, kubelet restarts them. Control plane is not involved in lifecycle of static pod. Kubelet also tries to create a mirror pod on the kubernetes api server for each static pod so that the static pods are visible i.e., when you do kubectl get pod fo...
Ansible config install pkg roles
Просмотров 23Год назад
Certain settings in Ansible are adjustable via a configuration file (ansible.cfg). The stock configuration should be sufficient for most users, but there may be reasons you would want to change them. Paths where configuration file is searched are listed in reference documentation. Getting the latest configuration If installing Ansible from a package manager, the latest ansible.cfg file should ...
creating logical volume and volume group by using ansible playbook.
Просмотров 296Год назад
Ansible is an automation, configuration, and infrastructure management tool. My previous articles introduce Ansible and explain system roles. In this article, I demonstrate configuring Logical Volume Manager (LVM) using Ansible. Configuring LVM with Ansible helps system administrators perform their tasks more efficiently and spend less time working manually. You can create an Ansible playbook t...
User&Group Management
Просмотров 14Год назад
The manage user and groups account is the core part of Linux operating system. Each user has distinct login credentials in operating system to manage customize privileges in to user and group account.
Constructing Pipeline&VIM Editor
Просмотров 15Год назад
A pipe is a form of redirection (transfer of standard output to some other destination) that is used in Linux and other Unix-like operating systems to send the output of one command/program/process to another command/program/process for further processing. The Unix/Linux systems allow stdout of a command to be connected to stdin of another command. You can make it do so by using the pipe charac...
control services and Daemons
Просмотров 53Год назад
A daemon is a subset of services that always run in memory waiting to service a request. For example - crond , ftpd ,etc. Whereas, a Service is a server application or set of applications that runs in the background waiting to be used, or carrying out essential task.
Process Management
Просмотров 5Год назад
PID is a unique ID number named and it is assigned by the kernel to every process. PIDs are assigned in order as processes are created. UID is a user identification number of the person who created it. The EUID is the ‘effective’ user ID, used to determine what resources and files a process has permission to access at any given moment. In general, the UID and EUID are the same, except for the p...
Move command and copy command
Просмотров 1Год назад
The Linux cp command is used for copying files and directories to another location. To copy a file, specify “cp” followed by the name of the file to copy.
Autofs configuration, System ctl, Auto.master,auto.misc, nfs,rpcbind,mountd
Просмотров 87Год назад
Autofs is an automount daemon that manages mount points as needed. In short, it only mounts a given share when that share is being accessed and are unmounted after a defined period of inactivity. Automounting NFS shares in this way conserves bandwidth and offers better performance compared to static mounts controlled by /etc/fstab.
NFS configuration, nfs server.service,rpcbind, mountd, firewall, yum install nfs-utils -y
Просмотров 1512 года назад
NFS: Network file system server, Network File Sharing (NFS) is a protocol that allows you to share directories and files with other Linux clients over a network. Shared directories are typically created on a file server, running the NFS server component. Users add files to them, which are then shared with other users who have access to the folder.
Schedule Future task:Atq, atrm, crontab, cron.daily, cron.cron.weekly.monthly Tasks
Просмотров 1212 года назад
In Linux, the cron daemon runs tasks in the background at specified times. To schedule a task using cron, you need to edit a special file called the crontab file in a text editor and add your task in it in a particular format. Then cron will run the task for you at the time you specify in the crontab file. Scheduling Tasks Using at , crontab -e , #sshd, chrond.service, #systemctl status atd.ser...
Day 1 Red Hat Linux
Просмотров 142 года назад
Introduction on Red Hat Linux Administration, What is Linux, What is Linux used for ? Linux Alternatives & competitors, Shell in Linux, Command, Kernel, Linux Architecture, Drivers, Open Source, RHEL Versions and SELinux.
Standard input, Standard output, Standard Error, Hard link and Soft link
Просмотров 72 года назад
Standard input, Standard output, Standard Error, Hard link, and Soft link with examples
Day3 Linux Administration
Просмотров 32 года назад
#cp command #mv command #ls -la command # rm -rf command