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How to Install MariaDB on Ubuntu 16.04

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Installing MariaDB on Ubuntu 16.04 
<a href="http://www.hackthesec.co.in/search/label/MariaDB" target="_blank">MariaDB </a>is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. It is notable for being led by the original developers of <a href="http://www.hackthesec.co.in/search/label/Mysql" target="_blank">MySQL</a>, who forked it due to concerns over its acquisition by Oracle.Contributors are required to share their copyright with the MariaDB Foundation. 
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<a href="https://mariadb.org/wp-content/uploads/2015/10/mariadb-usa-inc.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://mariadb.org/wp-content/uploads/2015/10/mariadb-usa-inc.png" /></a></div>
 
MariaDB intends to maintain high compatibility with MySQL, ensuring a "drop-in" replacement capability with library binary equivalency and exact matching with MySQL APIs and commands.It includes the XtraDB storage engine for replacing InnoDB,as well as a new storage engine, Aria, that intends to be both a transactional and non-transactional engine perhaps even included in future versions of <a href="http://www.hackthesec.co.in/search/label/Mysql" target="_blank">MySQL</a>. 
Installing MariaDB 
Installing from Ubuntu default repository is a straightforward way, but this may have bit old version of MariaDB. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt-get update -y
sudo apt-get install mariadb-server</pre>
Installing MariaDB from Official Mirror: 
MariaDB offers an official installer package for MariaDB; you can choose any one of mirrors from the <a href="https://downloads.mariadb.org/mariadb/repositories" target="_blank">MariaDB downloads page</a> to download it. 
 
 
Run below commands in the terminal to configure MariaDB repository straight away. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt-get install software-properties-common
sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8
sudo add-apt-repository 'deb [arch=amd64,i386,ppc64el] http://ftp.utexas.edu/mariadb/repo/10.1/ubuntu xenial main'</pre>
OR 
 
You can manually create and update the MariaDB repository file under /etc/apt/sources.list.d/. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo nano /etc/apt/sources.list.d/mariadb.list</pre>
Place the following entries into the above file. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># MariaDB 10.1 repository list - created 2016-06-18 06:14 UTC
# http://downloads.mariadb.org/mariadb/repositories/
deb [arch=amd64,i386] http://ftp.utexas.edu/mariadb/repo/10.1/ubuntu xenial main
deb-src http://ftp.utexas.edu/mariadb/repo/10.1/ubuntu xenial main</pre>
Now, install MariaDB using the following command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt-get update
sudo apt-get install mariadb-server</pre>
MariaDB installation by running mysql_secure_installation. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo mysql_secure_installation</pre>
Accessing MariaDB: 
To access the MariaDB instance, run the following command on the terminal. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">mysql -u root -p</pre>
Enter the password of root user that you have set during the installation when prompted. 
 
Once after entering the password, you would get a MariaDB shell. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">hackthesec@server:~$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 10.1.14-MariaDB-1~xenial mariadb.org binary distribution

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]></pre>
Managing MaraDB: 
In case if you want to start / stop the MariaDB use the following command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo systemctl start mariadb
sudo systemctl stop mariadb</pre>
Run the following command in the terminal to check whether MariaDB is running. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo systemctl status mariadb</pre>
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How to Install MariaDB on Ubuntu 16.04

Installing MariaDB on Ubuntu 16.04 MariaDB is a community-developed fork of the MySQL relational database management system intended to re...

How to Use NODEQUERY to monitor server performance

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Using NODEQUERY to monitor server performance 
NodeQuery provides a lightweight and easy to use linux server monitoring service. Get alerts and actively monitor the performance of your servers. 
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Anyway, I really like the simplicity of NodeQuery’s user interface and the way its display the data. 
How to setup NodeQuery monitoring agent on your server? 
 
SETUP USER AGENT 
 
Step 1 – Of course, you have to firstly signup for an account at NodeQuery website. <a href="https://nodequery.com/signup" target="_blank">Visit this link to go to their signup page</a>. 
Step 2 – Choose Beta Account, and then fill in your Full Name, Email Address and Password. 
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Just click on the blue Sign Up button. You'll be then asked to enter a challenge code. Just enter it, tick mark the "I agree to ToS," and click the Confirm button. 
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Then Goto your mail box and active the registration link after that login your account you will see the bellow dashboard.. 
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Step 5 – Let's add your first server to monitor. Click on the New Server button / link. 
Step 6 – Now define your server name. It is strongly recommended to use your valid FQDN. 
You have to also decide how the system will send you alert when your server goes down. 
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Setup minimum threshold of when NodePing should send you alert. There are three major sections you can setup the threshold for system resource usage alert : System load, RAM usage, and Disk usage. 
 
Step 7 -After that You'll be given a command to install monitoring agent on your server. Just copy that command : 
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Step 8 - Open up putty and login to your server as a user with sudo privilege. Issue the coped command there : 
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Step 9 – Go back to NodeQuery dashboard and click on the Manage Servers button.  You’ll then notice your newly added server is there. However, the status would be Awaiting Data It's need some to for syncing.. 
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Just wait for approximately 3 minutes and refresh that page. You’ll then see a page similar to this one : 
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Step 10 – You can then browse around to see detailed server performance stats monitored by NodeQuery : 
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Network usage 
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Network latency 
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Average Load (CPU and Disk I/O) 
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RAM Usage Stats 
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Disk Usage 
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How to Use NODEQUERY to monitor server performance

Using NODEQUERY to monitor server performance NodeQuery provides a lightweight and easy to use linux server monitoring service. Get alerts...

How to Install and Configure Puppet on CentOS 7 / RHEL 7

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Install and Configure Puppet on CentOS 7 / RHEL 7 
<a href="http://www.hackthesec.co.in/search/label/puppet" target="_blank">Puppet </a>is an open-source configuration management tool. It runs on many Unix-like systems as well as on Microsoft Windows, and includes its own declarative language to describe system configuration. 
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 <a href="http://www.hackthesec.co.in/search/label/puppet" target="_blank">Puppet</a> is produced by Puppet Labs, founded by Luke Kanies in 2005. It is written in Ruby and released as free software under the GNU General Public License (GPL) until version 2.7.0 and the Apache License 2.0 after that. 
Puppet Master: 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Operating system : CentOS 7 Minimal
IP Address       : 192.168.2.10
HostName         : server.hackthesec.local</pre>
Puppet client: 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Operating System : CentOS 7 Minimal
IP Address       : 192.168.2.20
HostName         : client.hackthesec.local</pre>
Make sure your system (both puppet server and client) is able to resolve the hostname each other, either use /etc/hosts file or DNS server. 
 
 
To have a production ready puppet setup, we have to use apache with passenger. To get the passenger, download and place the repo file to /etc/yum.repos.d/ 
Note: Only on the master server. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; float: none !important; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# curl --fail -sSLo /etc/yum.repos.d/passenger.repo https://oss-binaries.phusionpassenger.com/yum/definitions/el-passenger.repo</pre>
<div>
To install the puppet master / agent, we would require to setup puppet repository on the all the nodes. Enable puppet labs repository by installing below rpm.</div>
<div>
Note: Run it on both master and agent nodes.</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># rpm -ivh https://yum.puppetlabs.com/puppetlabs-release-el-7.noarch.rpm</pre>
</div>
<div>
<div>
Install and Configure Puppet on CentOS 7:</div>
<div style="color: #333333;">
Now, its time to install puppet. Install the puppet server using below command.</div>
</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; float: none !important; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# yum -y install puppet-server</pre>
<div>
As said earlier, we will configure puppet for master / agent architecture. So, this node will acts as a master node. Edit the puppet configuration file and modify the dns_alt_names.</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# vi /etc/puppet/puppet.conf

[main]
dns_alt_names = server,server.hackthesec.local
certname = server.hackthesec.local</pre>
If this machine is the only puppet master in your environment, run below command to create the puppet master certificate. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet master --verbose --no-daemonize

Info: Creating a new SSL key for ca
Info: Creating a new SSL certificate request for ca
Info: Certificate Request fingerprint (SHA256): 81:C6:BB:8B:1D:71:4C:64:E1:13:54:1B:EC:CF:99:D8:85:90:D1:6C:E8:85:50:3E:03:41:BA:C5:47:A7:4C:E5
Notice: Signed certificate request for ca
Info: Creating a new certificate revocation list
Info: Creating a new SSL key for server.hackthesec.local
Info: csr_attributes file loading from /etc/puppet/csr_attributes.yaml
Info: Creating a new SSL certificate request for server.hackthesec.local
Info: Certificate Request fingerprint (SHA256): FF:BE:D4:9B:E4:12:83:79:AE:BE:50:17:76:5F:F5:CD:5F:53:EA:5D:AA:5D:87:9E:7C:C4:BC:1B:8A:C6:FA:5C
Notice: server.hackthesec.local has a waiting certificate request
Notice: Signed certificate request for server.hackthesec.local
Notice: Removing file Puppet::SSL::CertificateRequest server.hackthesec.local at '/var/lib/puppet/ssl/ca/requests/server.hackthesec.local.pem'
Notice: Removing file Puppet::SSL::CertificateRequest server.hackthesec.local at '/var/lib/puppet/ssl/certificate_requests/server.hackthesec.local.pem'
Notice: Starting Puppet master version 3.8.3</pre>
Once you get "Notice: Starting Puppet master version <VERSION>", press ctrl-C to kill the process. 
Configure a Production-Ready Web Server: 
Puppet comes with a basic puppet master web server, but this cannot be used for real-life loads. We must configure a production quality web server before we start managing our nodes with Puppet. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; float: none !important; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# yum -y install httpd httpd-devel mod_ssl ruby-devel rubygems gcc gcc-c++ pygpgme curl</pre>
<div>
Install Passenger and apache module.</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# yum install -y mod_passenger</pre>
Create three directories for the application (a parent directory, a "public" directory, and a "tmp" directory), Copy the ext/rack/config.ru file from the Puppet source code into the parent directory and Set the ownership of the config.ru file. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# mkdir -p /usr/share/puppet/rack/puppetmasterd
[root@hackthesec server ~]# mkdir /usr/share/puppet/rack/puppetmasterd/public /usr/share/puppet/rack/puppetmasterd/tmp
[root@hackthesec server ~]# cp /usr/share/puppet/ext/rack/config.ru /usr/share/puppet/rack/puppetmasterd/
[root@hackthesec server ~]# chown puppet:puppet /usr/share/puppet/rack/puppetmasterd/config.ru</pre>
Add virtual host for puppet by creating the below configuration file. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# vi /etc/httpd/conf.d/puppetmaster.conf</pre>
Add below content into the virtual host file, change the  entries as per your environement. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># you probably want to tune these settings
PassengerHighPerformance on
PassengerMaxPoolSize 12
PassengerPoolIdleTime 1500
# PassengerMaxRequests 1000
PassengerStatThrottleRate 120

Listen 8140

<VirtualHost *:8140>
        SSLEngine on
        SSLProtocol             ALL -SSLv2 -SSLv3
        SSLCipherSuite          EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA
        SSLHonorCipherOrder     on

SSLCertificateFile      /var/lib/puppet/ssl/certs/server.hackthesec.local.pem        SSLCertificateKeyFile   /var/lib/puppet/ssl/private_keys/server.hackthesec.local.pem        SSLCertificateChainFile /var/lib/puppet/ssl/ca/ca_crt.pem
        SSLCACertificateFile   /var/lib/puppet/ssl/ca/ca_crt.pem
        # If Apache complains about invalid signatures on the CRL, you can try disabling
        # CRL checking by commenting the next line, but this is not recommended.
        SSLCARevocationFile     /var/lib/puppet/ssl/ca/ca_crl.pem
        # Apache 2.4 introduces the SSLCARevocationCheck directive and sets it to none
        # which effectively disables CRL checking; if you are using Apache 2.4+ you must
        # specify 'SSLCARevocationCheck chain' to actually use the CRL.
        # SSLCARevocationCheck chain
        SSLVerifyClient optional
        SSLVerifyDepth  1
        # The `ExportCertData` option is needed for agent certificate expiration warnings
        SSLOptions +StdEnvVars +ExportCertData

# This header needs to be set if using a loadbalancer or proxy
        RequestHeader unset X-Forwarded-For

RequestHeader set X-SSL-Subject %{SSL_CLIENT_S_DN}e
        RequestHeader set X-Client-DN %{SSL_CLIENT_S_DN}e
        RequestHeader set X-Client-Verify %{SSL_CLIENT_VERIFY}e

DocumentRoot /usr/share/puppet/rack/puppetmasterd/public
        RackBaseURI /
        <Directory /usr/share/puppet/rack/puppetmasterd/>
                Options None
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>
</VirtualHost>  </pre>
Restart apache server to take an effect of puppet virtual host, to do that, run following command on terminal. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# systemctl restart  httpd.service</pre>
Disable puppet service and enable apache server to auto start on system boot. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# systemctl disable puppet.service
[root@hackthesec server ~]# systemctl enable httpd.service</pre>
Firewall: 
Puppet listens on port no 8140; Configure the IP tables to allow it. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# firewall-cmd --zone=public --add-port=8140/tcp --permanent
[root@hackthesec server ~]# firewall-cmd --reload</pre>
Install Puppet on Agent Nodes: 
On your client machine, install puppet agent using below command. 
 
 
Note: You must have puppet repository configured on the agent nodes. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec client ~]# yum -y install puppet</pre>
Edit the puppet configuration file and set puppet master information on the client stanza. 
 
 
Note: Modify "server" value as per your environment. In my case, server is "server.hackthesec.local" 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec client ~]# vi /etc/puppet/puppet.conf

[agent]
server = server.hackthesec.local</pre>
Start puppet on agent node and make it to start automatically on system boot. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec client ~]# systemctl start  puppet.service
[root@hackthesec client ~]# systemctl enable puppet.service</pre>
You would get below events in the logs. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">05:46:45 client systemd: Starting Puppet agent...
05:46:46 client systemd: Started Puppet agent.
05:47:03 client systemd: Reloading.
05:49:10 client puppet-agent[2694]: Did not receive certificate</pre>
Sign the Agent Node's Certificate on Master Server: 
In an agent/master deployment, an admin must approve a certificate request for each agent node before that node can fetch configurations. Agent nodes will request certificates the first time they attempt to run. 
 
 
Log into the puppet master server and run below command to view outstanding requests. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; line-height: 19.2px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet cert list
"server.hackthesec.local" (SHA256) 35:D1:B5:67:52:1C:1C:BH:6H:DD:3C:2E:B0:28:D7:15:52:95:32:95:1F:37:29:2G:5F:D7:4C:F5:DB:94:A1:B2</pre>
Run puppet cert sign to sign a request, or puppet cert sign –all to sign all pending requests. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet cert sign client.hackthesec.local

Notice: Signed certificate request for client.hackthesec.local
Notice: Removing file Puppet::SSL::CertificateRequest client.hackthesec.local at '/var/lib/puppet/ssl/ca/requests/client.hackthesec.local.pem'</pre>
Run the following command on client machine to check the certificate 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec client ~]# puppet agent -t

Info: Caching certificate for client.hackthesec.local
Info: Caching certificate_revocation_list for ca
Info: Caching certificate for client.hackthesec.local
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for client.hackthesec.local
Info: Applying configuration version '1445401911'
Info: Creating state file /var/lib/puppet/state/state.yaml
Notice: Finished catalog run in 0.09 seconds</pre>
That’s All. Now, you have successfully configured puppet master and an agent. 
 
<div style="text-align: center;">
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
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How to Install and Configure Puppet on CentOS 7 / RHEL 7

Install and Configure Puppet on CentOS 7 / RHEL 7 Puppet is an open-source configuration management tool. It runs on many Unix-like syste...

How to Add Puppet Nodes to Foreman – CentOS 7 / Ubuntu 14.04

yum -y install puppet
</pre>
Install Puppet Agent on Ubuntu 14.04: 
Puppet agent, we have to configure Puppetlabs repository on Ubuntu 14.04. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">wget https://apt.puppetlabs.com/puppetlabs-release-trusty.deb
sudo dpkg -i puppetlabs-release-trusty.deb

sudo apt-get update

sudo apt-get install puppet
</pre>
Configure puppet agent on CentOS 7 / Ubuntu 14.04: 
Once the installation is done, we will need to update the "/etc/puppet/puppet.conf" file. 
 
There are two section on the agent node's puppet config file, a [main] and [master] section. Add the following settings to your [main] settings. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">vi /etc/puppet/puppet.conf</pre>
Comment or Delete "templatedir=$confdir/templates" line and enter your details Foreman (Puppet Master) in "server = hostname" line 
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; margin-bottom: 10px; overflow: auto; padding: 9.5px; word-break: break-all; word-wrap: break-word;">[main]
logdir=/var/log/puppet
vardir=/var/lib/puppet
ssldir=/var/lib/puppet/ssl
rundir=/var/run/puppet
factpath=$vardir/lib/facter
#templatedir=$confdir/templates
### Add Below Lines ###
server = server.hackthesec.local
report = true
pluginsync = true</pre>
Edit /etc/default/puppet to enable puppet service. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">vi /etc/default/puppet</pre>
Setting this to "yes" allows the puppet agent service to run. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">START=yes</pre>
To enable and run puppet agent service. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">puppet resource service puppet ensure=running enable=true</pre>
Sign Puppet Agent certificate: 
Now, you will have to sign the certificates of puppet agents in order to work with Foreman, issue the following command to list down the unsigned certificates. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet cert list
"ubuntu.hackthesec.local" (SHA256) 35:D1:B5:67:52:1C:1C:BH:6H:DD:3C:2E:B0:28:D7:15:52:95:32:95:1F:37:29:2G:5F:D7:4C:F5:DB:94:A1:B2</pre>
In the above output, "ubuntu.hackthesec.local" is the puppet agent. To sign the certificate follow below command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet cert sign ubuntu.hackthesec.local
Notice: Signed certificate request for ubuntu.hackthesec.local
Notice: Removing file Puppet::SSL::CertificateRequest ubuntu.hackthesec.local at '/var/lib/puppet/ssl/ca/requests/ubuntu.hackthesec.local.pem'</pre>
Console Mode: 
Open your Foreman web console, go to Infrastructure –> Smart proxies. Click Certificates button. 
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You see  agent certificate (ubuntu.hackthesec.local) is pending to be signed. To sign, click Sign button. 
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After that your agent (ubuntu.hackthesec.local) is signed successfully. 
To verify the node go to Hosts –> All Hosts. Verify that the new node (ubuntu.hackthesec.local) has been added to Foreman. 
Troubleshooting 
In case if you want to remove the puppet agent from the Puppet master, run. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet cert clean ubuntu.hackthesec.local
Notice: Revoked certificate with serial 3
Notice: Removing file Puppet::SSL::Certificate ubuntu.hackthesec.local at '/var/lib/puppet/ssl/ca/signed/ubuntu.hackthesec.local.pem'
Notice: Removing file Puppet::SSL::Certificate ubuntu.hackthesec.local at '/var/lib/puppet/ssl/certs/ubuntu.hackthesec.local.pem'</pre>
In case, if you want to re-register the puppet agent that you just deleted in previous step. Follow the below procedure. 
 
Stop the puppet service. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">service puppet stop</pre>
Delete the puppet agent ssl directory. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">rm -rf /var/lib/puppet/ssl/certs</pre>
Start the puppet service. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">service puppet start</pre>
Now, you can go and run the "puppet cert list" command on Foreman (puppet master) server to see the signing request, approve it incase you required. 
 
 
<div style="text-align: center;">
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
</div>

How to Add Puppet Nodes to Foreman – CentOS 7 / Ubuntu 14.04

Puppet Nodes to Foreman – CentOS 7 / Ubuntu 14.04 Puppet is an open-source configuration management tool. It runs on many Unix-like system...

How To Install Foreman on CentOS 7 / RHEL 7 / Ubuntu 14.04

rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

rpm -ivh http://yum.puppetlabs.com/puppetlabs-release-el-7.noarch.rpm

rpm -ivh http://yum.theforeman.org/releases/1.9/el7/x86_64/foreman-release.rpm

### Enable the RHEL Optional and RHSCL repos on RHEL 7 ###

yum-config-manager --enable rhel-7-server-optional-rpms rhel-server-rhscl-7-rpms</pre>
Run the following command to download Foreman installer. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum -y install foreman-installer</pre>
Now, run the Foreman installer to start installing Foreman. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">foreman-installer</pre>
The installation run is non-interactive, but the configuration can be customized by supplying any of the options listed in foreman-installer –help, or by running foreman-installer -i for interactive mode. 
 
 
Once the installation is completed, you will see an output like below where you would find the initial username and password to access the Foreman. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Success!
  * Foreman is running at https://server.hackthesec.local
      Initial credentials are admin / M8GEY5BH4cffgbuheu
  * Foreman Proxy is running at https://server.hackthesec.local:8443
  * Puppetmaster is running at port 8140
  The full log is at /var/log/foreman-installer/foreman-installer.log</pre>
Firewall Configuration: 
The following ports are used by the components of Foreman, needs to be allowed in IP tables (FirewallD) / Hardware Firewall. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">firewall-cmd --permanent --add-port=53/tcp
firewall-cmd --permanent --add-port=67-69/udp
firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --permanent --add-port=443/tcp
firewall-cmd --permanent --add-port=3000/tcp
firewall-cmd --permanent --add-port=3306/tcp
firewall-cmd --permanent --add-port=5910-5930/tcp
firewall-cmd --permanent --add-port=5432/tcp
firewall-cmd --permanent --add-port=8140/tcp
firewall-cmd --permanent --add-port=8443/tcp
firewall-cmd --reload</pre>
Install Foreman on Ubuntu 14.04: 
Make sure you have setup a FQDN mentioned in prerequisites. Now, we will install Foreman on Ubuntu.Setup a puppet repository, 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">apt-get -y install ca-certificates
wget https://apt.puppetlabs.com/puppetlabs-release-trusty.deb
dpkg -i puppetlabs-release-trusty.deb</pre>
Enable the Foreman repo. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">echo "deb http://deb.theforeman.org/ trusty nightly" > /etc/apt/sources.list.d/foreman.list
echo "deb http://deb.theforeman.org/ trusty nightly" >> /etc/apt/sources.list.d/foreman.list
wget -q http://deb.theforeman.org/pubkey.gpg -O- | apt-key add -</pre>
Download the Foreman installer. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">apt-get update && apt-get -y install foreman-installer</pre>
Run the Foreman installer. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">foreman-installer</pre>
Once the installation is completed, you will see an output like below, 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Success!
  * Foreman is running at https://server.hackthesec.local
      Initial credentials are admin / M8GEY5BH4cffgbuheu
  * Foreman Proxy is running at https://server.hackthesec.local:8443
  * Puppetmaster is running at port 8140
  The full log is at /var/log/foreman-installer/foreman-installer.log</pre>
Note down intial username and password, you need this for accessing Foreman’s dashboard. 
Configure Foreman (Optional): 
If your Foreman host is not visible in Hosts –> All Hosts tab, you should run below command which will send the first Puppet report to Foreman, automatically creating the host in Foreman’s database. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">puppet agent --test

Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for server.hackthesec.local
Info: Applying configuration version '1445821177'
Notice: Finished catalog run in 0.56 seconds</pre>
Puppet 3+ will show a warning the first time that the node can’t be found, this can be ignored. 
Access Foreman Web Console: 
Open up your favourite web browser, navigate to https://your-ip-address or https://FQDN 
 
You should get login page, enter your Foreman credentials. 
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Once you logged in, you will get an overview page. Like below. 
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To list down the available hosts, goto Hosts –> All Hosts from Menu. Since we do not have any puppet clients, All Hosts tab would only list your Foreman host, with an "O"status. This indicates its status is OK, with no changes made on the last Puppet run. 
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It is recommended to change the password of Admin user for security reasons. To do that, click UserName (Top right)  –> My Account, you would end up with an option to change a password. 
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Download and Install NTP module: 
One of the more important requirement of puppet is to have an accurate time-keeping, to do this, we will install Puppet NTP module for managing the NTP service. 
 
If you have Puppet 2.7.14 or higher, install the module automatically from Puppet Forge to our “production” environment (the default). 
 
 
Use following command to install NTP module on Foreman (Puppet master) host. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@hackthesec server ~]# puppet module install -i /etc/puppet/environments/production/modules saz/ntp

Notice: Preparing to install into /etc/puppet/environments/production/modules ...
Notice: Downloading from https://forgeapi.puppetlabs.com ...
Notice: Installing -- do not interrupt ...
/etc/puppet/environments/production/modules
└── saz-ntp (v2.3.2)</pre>
In Foreman's web console, go to Configure > Puppet Classes and click Import from hostname (server.hackthesec.local) to read the available Puppet classes from the puppet master and populate Foreman's database. 
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Select the NTP module and click the update button. 
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After clicking the update button, you will see something like below. The "ntp" class will appear in the Puppet class list if installed correctly. Click on NTP class on the left. 
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Now, Click the Smart Class Parameter and then select server list on the left side. Tick the Override checkbox so Foreman manages the "server list" parameter of the class, then click Submit. 
 
Note: Change the default value if you want to use your own NTP servers. 
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Go to Hosts –> All Hosts, edit the Foreman host. 
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Go to Puppet Classes tab and expand the ntp module and click the + icon to add the ntp class to the host, then click submit. 
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This time, it will take you automatically to the host details page. Click on YAML, it will show the ntp class and the server list parameter, as passed to Puppet via the ENC (external node classifier) interface. 
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At last, run the following command on the Foreman host to see the NTP service automatically reconfigured by Puppet and the NTP module. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">puppet agent --test</pre>
Verify the installation of NTP module by going to Hosts –> All Hosts –> Select Foreman Host –> Reports –> Select latest report. 
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