Skip to main content

Podman : Install

 Install Podman that is Container management tool.

It's possible to use the same ease of use of Docker Cli and also Podman does not need specific Service Daemon.

[1]. Install Podman.

[root@dlp ~]# dnf -y install podman

[2]. Download an official image and create a Container and output the words [Welcome to the Podman World] inside the Container.

# download official image

[root@dlp ~]# podman pull centos

Trying to pull docker.io/centos:latest...Getting image source signatures

Copying blob 729ec3a6ada3: 68.21 MiB / 68.21 MiB  4s

Copying config 0f3e07c0138f: 2.13 KiB / 2.13 KiB  0s

Writing manifest to image destination

Storing signatures

0f3e07c0138fbe05abcb7a9cc7d63d9bd4c980c3f61fea5efa32e7c4217ef4da


# run echo inside Container

[root@dlp ~]# podman run centos /bin/echo "Welcome to the Podman World"

Welcome to the Podman World

[3]. Connect to the interactive session of a Container with [i] and [t] option like follows. If [exit] from the Container session, the process of a Container finishes.

[root@dlp ~]# podman run -it centos /bin/bash

[root@1062d638cd7a /]#     # connected

[root@1062d638cd7a /]# uname -a

Linux 1062d638cd7a 4.18.0-80.7.1.el8_0.x86_64 #1 SMP Sat Aug 3 15:14:00 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[root@1062d638cd7a /]# exit

exit

[root@dlp ~]#     # come back

[4]. If you'd like to run a Container as a Daemon, add [d] option.

[root@dlp ~]# podman run -itd centos /bin/bash

81d101111d73e4b35dbd6b9a30aa75be8b9a43895430d569f9625ca6764289e5


# show podman proceses

[root@dlp ~]# podman ps

CONTAINER ID  IMAGE                            COMMAND    CREATED        STATUS            PORTS  NAMES

81d101111d73  docker.io/library/centos:latest  /bin/bash  3 seconds ago  Up 3 seconds ago         suspicious_lalande


# attach to container session

[root@dlp ~]# podman exec -it 81d101111d73 /bin/bash

[root@81d101111d73 /]#     # connected

[root@81d101111d73 /]# exit

# stop container process (if force stop, specify [kill])

[root@dlp ~]# podman stop 81d101111d73

[root@dlp ~]# podman ps

CONTAINER ID  IMAGE  COMMAND  CREATED  STATUS  PORTS  NAMES

Comments

Post a Comment

Popular posts from this blog

PERL Some good framework

1. Catalyst is the most popular agile Perl MVC web framework that encourages rapid development and clean design without getting in your way. Catalyst | Perl MVC web application framework 2. Mojolicious is a next generation web framework for the Perl programming language. Back in the early days of the web, many people learned Perl because of a wonderful Perl   ... Mojolicious - Perl real-time web framework 3. Documents for Perl  The Perl Archive Network, the gateway to all things Perl. The canonical location for Perl code and modules. The Comprehensive Perl Archive Network - www. cpan .org
Post a Comment
Read more

C++ How to use Date and Time

The C++ standard library does not provide a proper date type. C++ inherits the structs and functions for date and time manipulation from C. To access date and time related functions and structures, you would need to include <ctime> header file in your C++ program. There are four time-related types: clock_t, time_t, size_t , and tm . The types clock_t, size_t and time_t are capable of representing the system time and date as some sort of integer. The structure type tm holds the date and time in the form of a C structure having the following elements: struct tm { int tm_sec ; // seconds of minutes from 0 to 61 int tm_min ; // minutes of hour from 0 to 59 int tm_hour ; // hours of day from 0 to 24 int tm_mday ; // day of month from 1 to 31 int tm_mon ; // month of year from 0 to 11 int tm_year ; // year since 1900 int tm_wday ; // days since sunday int tm_yday ; // days since January 1st int tm_isdst ; // hours of daylight savin...
Post a Comment
Read more

Lambda Function with Amazon DynamoDB

DynamoDB can trigger AWS Lambda when the data in added to the tables, updated or deleted. In this chapter, we will work on a simple example that will add items to the DynamoDB table and AWS Lambda which will read the data and send mail with the data added. Requisites To use Amazon DB and AWS Lambda, we need to follow the steps as shown below − Create a table in DynamoDB with primary key Create a role which will have permission to work with DynamoDBand AWS Lambda. Create function in AWS Lambda AWS Lambda Trigger to send mail Add data in DynamoDB Let us discuss each of this step in detail. Example We are going to work out on following example which shows the basic interaction between DynamoDB and AWS Lambda. This example will help you to understand the following operations − Creating a table called customer in Dynamodb table and how to enter data in that table. Triggering AWS Lambda function once the data is entered and sending mail using Amazon SES service. The basic block diagram that ...
Post a Comment
Read more