Bootstrap a Node 2 and Deploy Apache Web Server
In this article,we will see Bootstrap a Node 2 and Deploy Apache Web Server.
Implementation Steps
Bootstrap a Node 2
- Check Availability Zone of your workstation.
- Create a Node “Chef-Node-1” by launching instance.
- Open your workstation Linux terminal through putty.
- Switch to root user.
- Go to chef-repo.
- Run bootstrap command to bootstrap a node 2.
- Verify bootstrap nodes.
Deploy an Apache Web Server
- Attach recipe “ktexperts-apache-recipe’rb” to node “ktexperts-node 2”.
- Verify recipe in run list.
- Connect to node 2 “Chef-Node-2” Linux Terminal through putty.
- Switch to root user.
- Open “crontab” file inside the /etc directory and write script to run automatically.
- Run chef-client.
- Verify the content of node 2 “Chef-Node-2”.
- Modify recipe “ktexperts-apache-recipe.rb”.
- Upload cookbook to chef server.
- Verify the content of node 1 “Chef-Node-1”.
Check Availability Zone of your workstation
we can see the Availability Zone “ap-south-1a” of your workstation.
Note
Workstation is in ap-south-1a AZ.
we create a node in the same Availability Zone “ap-south-1a”.
we need to open SSH and HTTP ports.
Create a Node “Chef-Node-2”
Launch Linux EC2 Instance
Check below link to Launch Linux EC2 Instance.
We can see the node “Chef-Node-2” which was created earlier.
Open your workstation Linux terminal through putty
Using username “ec2-user”. Authenticating with public key “imported-openssh-key” Last login: Fri Dec 27 09:02:29 2019 from 124.123.103.5 __| __|_ ) _| ( / Amazon Linux 2 AMI ___|\___|___| https://aws.amazon.com/amazon-linux-2/
Switch to root user
[ec2-user@ip-172-31-42-243 ~]$ sudo su [root@ip-172-31-42-243 ec2-user]#
Go to chef-repo
[root@ip-172-31-42-243 ec2-user]# cd chef-repo/ [root@ip-172-31-42-243 chef-repo]#
Run bootstrap command to bootstrap a node 2
we need specify private IP key file of chef-node-1 in bootstrap command.
Copy private IP of chef-node-2
Specify username,private IP(chef-node-2) and pem key “chef.pem” (chef-node-2) in the bootstrap command.
Note
Two actions will be done while bootstrapping.
Adding node to chef server.
Installing chef package.
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[root@ip-172-31-42-243 chef-repo]# knife bootstrap 172.31.35.130 --ssh-user ec2-user --sudo -i chef.pem -N ktexperts-node2 --ssh-user: This flag is deprecated. Use -U/--connection-user instead. Connecting to 172.31.35.130 The authenticity of host '172.31.35.130 ()' can't be established. fingerprint is SHA256:Civje7e3xj68RbKKpMJhqqRpGNGs4wUu9oFS4JxfxKQ. Are you sure you want to continue connecting ? (Y/N) Y Connecting to 172.31.35.130 Creating new client for ktexperts-node2 Creating new node for ktexperts-node2 Bootstrapping 172.31.35.130 [172.31.35.130] -----> Installing Chef Omnibus (stable/15) downloading https://omnitruck.chef.io/chef/install.sh to file /tmp/install.sh.3624/install.sh trying wget... [172.31.35.130] el 7 x86_64 Getting information for chef stable 15 for el... downloading https://omnitruck.chef.io/stable/chef/metadata?v=15&p=el&pv=7&m=x86_64 to file /tmp/install.sh.3629/metadata.txt [172.31.35.130] trying wget... [172.31.35.130] sha1 27c8caeb7fcbab3642d3a2c320d2f880a6cf8541 sha256 9cb48fed74779b261a03c34178e375bbbf27860db3641ef5b392f7b1e439414e url https://packages.chef.io/files/stable/chef/15.6.10/el/7/chef-15.6.10-1.el7.x86_64.rpm version 15.6.10 [172.31.35.130] [172.31.35.130] downloaded metadata file looks valid... [172.31.35.130] downloading https://packages.chef.io/files/stable/chef/15.6.10/el/7/chef-15.6.10-1.el7.x86_64.rpm to file /tmp/install.sh.3629/chef-15.6.10-1.el7.x86_64.rpm [172.31.35.130] trying wget... [172.31.35.130] Comparing checksum with sha256sum... [172.31.35.130] Installing chef 15 installing with rpm... [172.31.35.130] warning: [172.31.35.130] /tmp/install.sh.3629/chef-15.6.10-1.el7.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 83ef826a: NOKEY [172.31.35.130] Preparing... [172.31.35.130] ######################################## [172.31.35.130] [172.31.35.130] Updating / installing... chef-15.6.10-1.el7 [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] # [172.31.35.130] [172.31.35.130] Thank you for installing Chef Infra Client! For help getting started visit https://learn.chef.io [172.31.35.130] Starting the first Chef Infra Client Client run... [172.31.35.130] +---------------------------------------------+ ✔ 2 product licenses accepted. +---------------------------------------------+ [172.31.35.130] Starting Chef Infra Client, version 15.6.10 [172.31.35.130] [172.31.35.130] resolving cookbooks for run list: [] [172.31.35.130] [172.31.35.130] Synchronizing Cookbooks: [172.31.35.130] [172.31.35.130] Installing Cookbook Gems: Compiling Cookbooks... [2019-12-31T11:57:02+00:00] WARN: Node ktexperts-node2 has an empty run list. [172.31.35.130] Converging 0 resources [172.31.35.130] [172.31.35.130] [172.31.35.130] [172.31.35.130] Running handlers: [172.31.35.130] [172.31.35.130] Running handlers complete [172.31.35.130] Chef Infra Client finished, 0/0 resources updated in 06 seconds [172.31.35.130] |
Verify bootstrap nodes
To the bootstrap nodes
The ktexperts-node2 has added to chef server successfully.
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[root@ip-172-31-42-243 chef-repo]# knife node list ktexperts-node1 ktexperts-node2 |
Deploy an Apache Web Server
We have already uploaded the recipe to chef server.
Attach recipe “ktexperts-apache-recipe’rb” to node “ktexperts-node 2”
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[root@ip-172-31-42-243 chef-repo]# knife node run_list set ktexperts-node2 "recipe[ktexperts-apache-cookbook::ktexperts-apache-recipe]" ktexperts-node2: run_list: recipe[ktexperts-apache-cookbook::ktexperts-apache-recipe] |
Verify recipe in run list
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che-cookbook::ktexperts-apache-recipe]" ktexperts-node2: run_list: recipe[ktexperts-apache-cookbook::ktexperts-apache-recipe] [root@ip-172-31-42-243 chef-repo]# knife node show ktexperts-node2 Node Name: ktexperts-node2 Environment: _default FQDN: ip-172-31-35-130.ap-south-1.compute.internal IP: 13.127.5.149 Run List: recipe[ktexperts-apache-cookbook::ktexperts-apache-recipe] Roles: Recipes: Platform: amazon 2 Tags: |
Connect to node 2 “Chef-Node-2” Linux Terminal through putty
Switch to root user
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[ec2-user@ip-172-31-35-130 ~]$ sudo su [root@ip-172-31-35-130 ec2-user]# |
Open “crontab” file inside the /etc directory and write script to run automatically
In the crontab file we set the time interval to run the chef-client depends on interval.
Note
We have provide space in between stars.
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[root@ip-172-31-35-130 ec2-user]# vi /etc/crontab SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root # For details see man 4 crontabs # Example of job definition: # .---------------- minute (0 - 59) # | .------------- hour (0 - 23) # | | .---------- day of month (1 - 31) # | | | .------- month (1 - 12) OR jan,feb,mar,apr ... # | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat # | | | | | # * * * * * user-name command to be executed <span style="color: #ff0000;">* * * * * root chef-client</span> |
Note
:wq! — to quit.
Run chef-client
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[root@ip-172-31-35-130 ec2-user]# chef-client Starting Chef Infra Client, version 15.6.10 resolving cookbooks for run list: ["ktexperts-apache-cookbook::ktexperts-apache-recipe"] Synchronizing Cookbooks: - ktexperts-apache-cookbook (0.1.0) Installing Cookbook Gems: Compiling Cookbooks... Converging 3 resources Recipe: ktexperts-apache-cookbook::ktexperts-apache-recipe * yum_package[httpd] action install - install version 0:2.4.41-1.amzn2.0.1.x86_64 of package httpd * file[/var/www/html/index.html] action create - create new file /var/www/html/index.html - update content in file /var/www/html/index.html from none to 5e527b --- /var/www/html/index.html 2019-12-31 12:09:27.466920742 +0000 +++ /var/www/html/.chef-index20191231-3915-1lw4kds.html 2019-12-31 12:09:27.466920742 +0000 @@ -1 +1,2 @@ +wwww.ktexperts.com && Knowledge sharing platform * service[httpd] action enable - enable service service[httpd] * service[httpd] action start - start service service[httpd] Running handlers: Running handlers complete Chef Infra Client finished, 4/4 resources updated in 13 seconds |
Note
Once run the chef-client in the node 1 then the node became a Apache Web Server.
Verify the content of node 2 “Chef-Node-2”
Copy the IPV4 Public IP of node 1″Chef-Node-2″
Search IPV4 Public IP in browserWe can able to see the content of node 1 “Chef-Node-2”
Modify recipe “ktexperts-apache-recipe.rb”
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[root@ip-172-31-42-243 chef-repo]# vi cookbooks/ktexperts-apache-cookbook/recipes/ktexperts-apache-recipe.rb package 'httpd' do action :install end file '/var/www/html/index.html' do content "wwww.ktexperts.com && Knowledge sharing platform && Help to share Knowledge" action :create end service 'httpd' do action [ :enable, :start ] end |
Note
:wq! — to quit.
Upload cookbook to chef server
we can’t upload individual recipes so,we can upload cookbook that the recipe present inside the cookbook itself.
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[root@ip-172-31-42-243 chef-repo]# knife cookbook upload ktexperts-apache-cookbook Uploading ktexperts-apache-cookbook [0.1.0] Uploaded 1 cookbook. |
Verify the content of node 1 “Chef-Node-1”
Refresh IPV4 Public IP the browser
we can see the content has been modified successfully.
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