RAHAMSHAIK007 · summu97 · Dec 13, 2023 · Dec 14, 2023 · Dec 14, 2023 · Dec 14, 2023
diff --git a/day-01 → 01 - git b/day-01 → 01 - git
diff --git a/day-06 → 06 - ansible b/day-06 → 06 - ansible
@@ -222,3 +222,4 @@ TO EXECUTE: ansible-playbook playbbok.yml
         - docker*
         - java-1.8.0-openjdk*
         - tree*
+ansible-playbook playbook.yml --syntax (this will show any errors in playbook)
diff --git a/day-07 → 07 - ansible b/day-07 → 07 - ansible
diff --git a/day-08 → 08 - ansible b/day-08 → 08 - ansible
@@ -104,3 +104,13 @@ dev-2: mysql  -- > ms
 test-1: python -- > py
 test-2: NumPy and Pandas -- > n & p
 
+- hosts: all
+  tasks:
+    - name: installing apache
+      yum: name=httpd state=present
+    - name: installing mysql
+      yum: name=mysql state=present
+    - name: installing python
+      yum: name=python3 state=present
+
+
diff --git a/day-09 → 09 - ansible b/day-09 → 09 - ansible
diff --git a/day-10 → 10 - docker b/day-10 → 10 - docker
diff --git a/day-11 → 11 - docker b/day-11 → 11 - docker
diff --git a/day-12 → 12 - docker b/day-12 → 12 - docker
diff --git a/day-13 → 13 - docker b/day-13 → 13 - docker
diff --git a/day-20 → 20 - tfm b/day-20 → 20 - tfm
diff --git a/LAMP-stack b/LAMP-stack
@@ -0,0 +1,55 @@
+The LAMP stack is a popular open-source software stack used for web development. 
+Linux
+
+Apache
+
+MySQL
+MySQL: This is the relational database management system (RDBMS) used to store and manage the website's data. 
+
+PHP/Python/Perl
+-> PHP is a server-side scripting language used for developing dynamic web pages.
+
+WEB:"web" typically refers to the World Wide Web, which is a global information space accessible via the internet.
+
+"stack" refers to a set of software that is commonly used together to enable the hosting of dynamic websites and web applications.
+
+1. Install Apache:
+sudo apt update
+sudo apt install apache2
+sudo systemctl start apache2
+sudo systemctl enable apache2  (this is similar to chkconfig)
+
+2. Install MySQL:
+sudo apt install mysql-server
+sudo systemctl start mysql
+sudo systemctl enable mysql
+
+3. Install PHP:
+sudo apt install php libapache2-mod-php php-mysql
+sudo systemctl restart apache2
+
+Test Your LAMP Stack:
+echo "<?php phpinfo(); ?>" | sudo tee /var/www/html/info.php
+
+Additional Considerations:
+Ensure that your firewall allows traffic on the necessary ports (80 for HTTP, 443 for HTTPS).
+Secure your MySQL installation by running the MySQL secure installation script: sudo mysql_secure_installation.
+
+
+for amazon linux:
+sudo yum update
+sudo yum install httpd
+sudo service httpd start
+sudo chkconfig httpd on
+
+sudo yum install mysql-server
+sudo service mysqld start
+sudo chkconfig mysqld on
+
+sudo mysql_secure_installation
+This script will prompt you to set a root password, remove anonymous users, and more.
+
+sudo yum install php php-mysql
+sudo service httpd restart
+
+echo "<?php phpinfo(); ?>" | sudo tee /var/www/html/info.php
diff --git a/configmaps and secrets b/configmaps and secrets
@@ -0,0 +1,28 @@
+to pass env variables using ENV
+
+kubectl create deploy deployname --image=mariadb
+kubectl set env deploy deployname MYSQL_ROOT_PASSWORD=sumo97
+cmnd: kubectl get po
+cmnd: kubectl delete deploy deployname
+
+to pass env variables using ENVFROM-file
+
+  vim abc
+MYSQL_ROOT_PASSWORD=sumo97
+MYSQL_USER=admin
+
+kubectl create cm cmname --from-env-file=abc
+kubectl get cm
+kubectl describe cm cmname
+kubectl create deploy deployname --image=mariadb
+kubectl get po
+kubectl set env deploy deployname --from=configmap/cmname
+kubectl get po
+kubectl delete deploy deployname
+
+SECRETS:
+kubectl create deploy deployname --image=mariadb
+kubectl get po
+kubectl create secret generic pswdname --from-literal=ROOT_PASSWORD=sumo97
+kubectl get secrets
+kubectl describe secrets
diff --git a/day-04 b/day-04
@@ -40,7 +40,6 @@ S	: STEPS
 
 SINGLE STAGE: this pipeline will have only one stage.
 
-
 pipeline {
     agent any 
 
@@ -54,18 +53,6 @@ pipeline {
 }
 
 
-pipeline {
-    agent any 
-
-    stages {
-        stage('raham') {
-            steps {
-                sh 'touch file2'
-            }
-        }
-    }
-}
-
 MULTI STAGE: this pipeline will have more than one stage.
 
 EXAMPLE-1:
@@ -86,23 +73,6 @@ pipeline {
     }
 }
 
-EXAMPLE-2:
-pipeline {
-    agent any
-
-    stages {
-        stage('cpu') {
-            steps {
-                sh 'lscpu'
-            }
-        }
-        stage('mem') {
-            steps {
-                sh 'lsmem'
-            }
-        }
-    }
-}
 
 
 CI PIPELINE:
@@ -193,25 +163,6 @@ pipeline {
     }
 }
 
-EXAMPLE-2:
-pipeline {
-    agent any
-
-    stages {
-        stage('one') {
-            steps {
-                git 'https://github.com/devopsbyraham/jenkins-java-project.git'
-                sh '''
-                mvn compile
-                mvn test
-                mvn package
-                mvn install
-                mvn clean package
-                '''
-            }
-        }
-    }
-}
 
 USER INPUT:
 pipeline {
@@ -329,26 +280,26 @@ ALTERNATIVES: NGINX, IIS, WEBSPHERE, JBOSS, GLASSFISH
 
 
 SETUP:
-INSTALL JAVA: amazon-linux-extras install java-openjdk11 -y
-
-STEP-1: DOWNLOAD TOMCAT (dlcdn.apache.org)
+vim tomcat.sh
+#
+amazon-linux-extras install java-openjdk11 -y
 wget https://dlcdn.apache.org/tomcat/tomcat-9/v9.0.83/bin/apache-tomcat-9.0.83.tar.gz
-
-STEP-2: EXTRACT THE FILES
 tar -zxvf apache-tomcat-9.0.83.tar.gz
+sed -i '56  a\<role rolename="manager-gui"/>' apache-tomcat-9.0.83/conf/tomcat-users.xml
+sed -i '57  a\<role rolename="manager-script"/>' apache-tomcat-9.0.83/conf/tomcat-users.xml
+sed -i '58  a\<user username="tomcat" password="raham123" roles="manager-gui, manager-script"/>' apache-tomcat-9.0.83/conf/tomcat-users.xml
+sed -i '59  a\</tomcat-users>' apache-tomcat-9.0.83/conf/tomcat-users.xml
+sed -i '56d' apache-tomcat-9.0.83/conf/tomcat-users.xml
+sed -i '21d' apache-tomcat-9.0.83/webapps/manager/META-INF/context.xml
+sed -i '22d'  apache-tomcat-9.0.83/webapps/manager/META-INF/context.xml
+sh apache-tomcat-9.0.83/bin/startup.sh
+#
 
-STEP-3: CONFIGURE USER, PASSWORD & ROLES
-vim apache-tomcat-9.0.83/conf/tomcat-users.xml
-
- 56   <role rolename="manager-gui"/>
- 57   <role rolename="manager-script"/>
- 58   <user username="tomcat" password="raham123" roles="manager-gui, manager-script"/>
-
-STEP-4: DELETE LINE 21 AND 22
-vim apache-tomcat-9.0.83/webapps/manager/META-INF/context.xml
+NOTE:
+copy code from # to # and run the script i.e, sh tomcat.sh
 
-STEP-5: STARTING TOMCAT
-sh apache-tomcat-9.0.83/bin/startup.sh
+TO SHUTDOWN THE TOMCAT SERVER:
+sh apache-tomcat-9.0.83/bin/shutdown.sh
 
 CONNECTION:
 COPY PUBLIC IP:8080 
@@ -394,9 +345,9 @@ pipeline {
             steps {
                 deploy adapters: [
                    tomcat9(
-                    credentialsId: '056c3140-9f77-44c0-8b85-1f1435b918ea',
+                    credentialsId: 'give cred id that you create',
                     path: '',
-                    url: 'http://3.84.101.170:8080/'
+                    url: 'http://3.84.101.170:8080/'#(give tomcat url)
                     )
                 ],
                 contextPath: 'netflix',

diff --git a/day-14 b/day-14
@@ -99,6 +99,7 @@ NOTE: When you download a command as binary file it need to be on /usr/local/bin
 because all the commands in linux will be on /usr/local/bin 
 and need to give executable permission for that binary file to work as a  command.
 
+A binary file is a computer file that contains data in a format that is not intended for humans to read.
 
 
 POD:

diff --git a/day-17 b/day-17
@@ -211,7 +211,7 @@ kubectl get al1
 
 now opne second terminal 
 kubectl get po
-kubectl exec mydeploy-6bd88977d5-7s6t8 -it -- /bin/bash
+kubectl exec pod_name_id -it -- /bin/bash (this will not take you inside )
 
 go to terminal one 
 kubectl get all : it will observer for every 2 seconds
@@ -227,74 +227,3 @@ now if the load gets down then after 5 minutes all the pods will go
 these 5 minutes is called as cooldown period 
 
 
-
-  history:
-  oot@ip-172-31-47-225 ~]# history
-    1  vim kops.sh
-    2  vim .bashrc
-    3  sh kops.sh
-    4  source .bashrc
-    5  sh kops.sh
-    6  kops validate cluster --wait 10m
-    7  cat kops.sh
-    8  kops validate cluster --wait 10m
-    9  export KOPS_STATE_STORE=s3://cloudanddevopsbyraham8899007.k8s.local
-   10  kops validate cluster --wait 10m
-   11  kubectl get svc
-   12  vim abc.yml
-   13  kubectl create -f abc.yml
-   14  kubectl get svc,deploy
-   15  kubectl delete -f abc.yml
-   16  vim abc.yml
-   17  kubectl create -f abc.yml
-   18  kubectl get svc,deploy
-   19  kubectl get po -o wide
-   20  kubectl delete -f abc.yml
-   21  vim abc.yml
-   22  kubectl create -f abc.yml
-   23  kubectl get svc,deploy
-   24  vim abc.yml
-   25  kubectl apply -f abc.yml
-   26  kubectl get svc,deploy
-   27  kubectl delete -f abc.yml
-   28  vim abc.yml
-   29  kubectl create -f abc.yml
-   30  kubectl get svc,deploy
-   31  kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
-   32  minikube addons enable metrics-server #(only for minikube)
-   33  kubectl top nodes
-   34  kubectl top pods
-   35  kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
-   36  kubectl top po
-   37  kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/high-availability-1.21+.yaml
-   38*
-   39  kubectl top po
-   40  kubectl top NO
-   41  kubectl top no
-   42  vim abc.yml
-   43  cat abc.yml
-   44  kubectl create -f abc.yml
-   45  vim abc.yml
-   46  kubectl create -f abc.yml
-   47  vim abc.yml
-   48  kubectl create -f abc.yml
-   49  vim abc.yml
-   50  cat abc.yml
-   51  vim  abc.yml
-   52  kubectl create -f abc.yml
-   53  cat r
-   54  cat abc.yml
-   55  vim abc.yml
-   56  kubectl create -f abc.yml
-   57  vim abc.yml
-   58  kubectl create -f abc.yml
-   59  kubectl get po
-   60  kubectl get deploy
-   61  kubectl delete deploy swiggy-deploy
-   62  kubectl get deploy
-   63  kubectl autoscale deployment mydeploy --cpu-percent=20 --min=1 --max=10
-   64  kubectl get po
-   65  kubectl exec -it mydeploy-c5d4f9cbb-flsgk -- /bin/bash
-   66  kubectl get po
-   67  history
-
diff --git a/metric-server.sh , HPA b/metric-server.sh , HPA
@@ -0,0 +1,32 @@
+FOR MINIKUBE:
+kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+minikube addons enable metrics-server #(only for minikube)
+
+FOR KOPS:
+kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/high-availability-1.21+.yaml
+
+kubectl top nodes
+kubectl top pods
+kubectl get po --watch (THIS WILL MONITOR ALL POD ACTIVITIES)
+
+
+
+HORIZONTAL POD AUTOSCALLING:  HPA
+
+TO SET MIN AND MAX POD LEVELS:
+
+kubectl autoscale deploy deployment_name --cpu-percent=20 --min=5 --max=10
+
+STRESS ON PODS:
+
+ kubectl exec -it pod_name -- /bin/bash (this will execute command by going inside of pod)
+
+ if image OS is UBUNTU
+ for stress: apt install stress -y
+ run the last command to increase stress on pod
+ cmnd: stress
+
+ if image OS is linux
+ cmnd: amazon-linux-extras install epel -y
+ cmnd: yum install stress -y
-Original file line number
+Diff line change
@@ Expand Up / @@ -222,3 +222,4 @@ TO EXECUTE: ansible-playbook playbbok.yml @@
             - docker*
             - java-1.8.0-openjdk*
             - tree*
+    ansible-playbook playbook.yml --syntax (this will show any errors in playbook)