Homework 19. Jenkins. Start

Yuliya_Buyalskaya/19.Jenkins.Start/README.md

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+## Homework Assignment 1: Deploy Jenkins
+Create user that has only read rights
+
+![user creation](../19.Jenkins.Start/pictures/1.jpg)
+![user creation](../19.Jenkins.Start/pictures/2.jpg)
+
+Add node Node_01 to the jenkins
+
+![node](../19.Jenkins.Start/pictures/3.jpg)
+
+Add nodePort to the [jenkins service](https://github.com/Julie717/kubernetes/blob/14-kubernetes-application-deployment/jenkins-app/templates/service.yaml).
+Change helm version to 0.1.1, make new deploy and [apply new helm version to the argocd](https://github.com/Julie717/argocd/blob/master/app/jenkins-app.yaml).
+Check that nodePort appeared into the service in k9s
+
+![check nodePort](../19.Jenkins.Start/pictures/4.jpg)
+
+Install agent to the node-machine
+
+```shell
+root@sa-3:~# wget http://192.168.208.3:30010/jnlpJars/agent.jar
+--2025-02-19 19:37:21--  http://192.168.208.3:30010/jnlpJars/agent.jar
+Connecting to 192.168.208.3:30010... connected.
+HTTP request sent, awaiting response... 200 OK
+Length: 1395562 (1.3M) [application/java-archive]
+Saving to: 'agent.jar'
+
+agent.jar                      100%[=================================================>]   1.33M  --.-KB/s    in 0.01s
+
+2025-02-19 19:37:21 (117 MB/s) - 'agent.jar' saved [1395562/1395562]
+root@sa-3:~# java -jar agent.jar -url http://192.168.208.3:30010 -secret 5a50ccd262927eda25e14c030f192f16dad9065343dcbfddfc3edace512953ae -name "Node_01" -webSocket -workDir "/var/lib/jenkins"
+Feb 19, 2025 7:41:00 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
+INFO: Using /var/lib/jenkins/remoting as a remoting work directory
+Feb 19, 2025 7:41:00 PM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
+INFO: Both error and output logs will be printed to /var/lib/jenkins/remoting
+Feb 19, 2025 7:41:00 PM hudson.remoting.Launcher createEngine
+INFO: Setting up agent: Node_01
+Feb 19, 2025 7:41:00 PM hudson.remoting.Engine startEngine
+INFO: Using Remoting version: 3283.v92c105e0f819
+Feb 19, 2025 7:41:00 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
+INFO: Using /var/lib/jenkins/remoting as a remoting work directory
+Feb 19, 2025 7:41:01 PM hudson.remoting.Launcher$CuiListener status
+INFO: WebSocket connection open
+Feb 19, 2025 7:41:01 PM hudson.remoting.Launcher$CuiListener status
+INFO: Connected
+```
+
+![node](../19.Jenkins.Start/pictures/5.jpg)
+
+Write bash script to retrieve information if today is a holiday and what is the latest exchange rates (result write to the properties file)
+
+```shell
+#!/bin/bash
+TODAY=`date +%F`
+HOLIDAY_MESSAGE="Today date is $TODAY and it is "
+if [ `curl -X 'GET' "https://openholidaysapi.org/PublicHolidaysByDate?date=$TODAY&languageIsoCode=BY" -H 'accept: application/json' | jq 'map(select(.country.isoCode == "BY"))'` == '[]' ]
+then
+  HOLIDAY_MESSAGE="$HOLIDAY_MESSAGE not"
+fi
+HOLIDAY_MESSAGE="$HOLIDAY_MESSAGE a holiday"
+
+echo $HOLIDAY_MESSAGE
+
+EXCHANGE_RATES=`curl "https://open.er-api.com/v6/latest/USD" | jq -jr  '.rates | to_entries[] | select(.key == ("USD", "EUR", "RUB")) | .key, ": ",.value, " "'`
+EXCHANGE_RATES="Latest exchange rates: ${EXCHANGE_RATES}"
+
+echo $EXCHANGE_RATES
+
+truncate -s0 result.properties
+echo "HOLIDAY_MESSAGE=$HOLIDAY_MESSAGE" >> result.properties
+echo "EXCHANGE_RATES=$EXCHANGE_RATES" >> result.properties
+```
+
+In order to have a possibility to send message to the slack from Jenkins follow [this manual of usage slck notification plugin](https://plugins.jenkins.io/slack/). 
+Create app and add it to the necessary channel, retrieved secret via installation put to the Jenkins system config and test connection.
+
+![slack config](../19.Jenkins.Start/pictures/6.jpg)
+
+Create job that is going to run on created Node_01
+
+![node setup](../19.Jenkins.Start/pictures/7.jpg)
+
+every day
+
+![every day run](../19.Jenkins.Start/pictures/8.jpg)
+
+using environment variable properties file (install Inject Environment Variables Plugin)
+
+![env variable file](../19.Jenkins.Start/pictures/9.jpg)
+
+executing created earlier script
+
+![script](../19.Jenkins.Start/pictures/10.jpg)
+
+and sending notification to the slack on successful run.
+
+![slack](../19.Jenkins.Start/pictures/11.jpg)
+
+Then, run the job and check the result
+
+![console](../19.Jenkins.Start/pictures/12.jpg)
+
+![slack notification](../19.Jenkins.Start/pictures/13.jpg)

Yuliya_Buyalskaya/README.md

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 [Homework 15. Kubernetes CI CD](../Yuliya_Buyalskaya/15.Kubernetes_CI_CD/README.md) \
 [Homework 16. Technical and service monitoring](../Yuliya_Buyalskaya/16.Technical_and_service_monitoring/README.md) \
 [Homework 17. Log monitoring](../Yuliya_Buyalskaya/17.Log_monitoring/README.md) \
-[Homework 18. Testing](../Yuliya_Buyalskaya/18.Testing/README.md)
+[Homework 18. Testing](../Yuliya_Buyalskaya/18.Testing/README.md) \
+[Homework 19. Jenkins. Start](../Yuliya_Buyalskaya/19.Jenkins.Start/README.md)