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Let us verify our master system is having the setting, as we have discussed, so in

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our case, we will go to, our, these three systems are there Master c10 and c20.

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So what we are going to do, we will go to the master system and we will check this command hostname,

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and we can see that it is master.example.com.

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Then with dnsdomainname, we can check what is our domain name.

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It is example.com.

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Then we can check the entries in /etc/hosts file.

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So the settings are there 172.24.0.1, and the name of the system is there.

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Then we can verify the IP address, ip a s with ens33, whether it is having the proper

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address or not, 172.24.0.1 is there.

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And then we are going to check whether our sestatus it is disabled and we can verify that by using

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that file.

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Also /etc/sysconfig/selinux

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so it is going to show you whether it is in disable state or not.

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So selinux is in disabled and regarding iptables, whether our firewall is allowing

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all traffic or not.

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We can use this command iptables -L, and then we can check with our main packages regarding

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Apache.

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They are installed or not.

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query httpd we will find that that package is installed.

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Then we will check openssl it is available or not then mod.

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ssl so we can verify these all and the other packages also can be verify, in our

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case.

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This lab is properly ready.

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That means with rpm command, you can check all the things and we have checked the IP addresses also.

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And what was the file in which we have made the changes that we showed you that also it is the /etc

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sysconfig/network-scripts and the file name is ifcfg.

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ens33, so here you will see that the entries are static, bootprotocol static and IP addresses is 172.24

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.0.1 and netmask is this and if we are going to check the settings, what are the machine settings, we

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will find that it is bridge.

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that is we wanted initially it was NAT.

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So we changed the setting to bridge.

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that mean the system in our case is according to what we have specified, you can check and verify each and

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every package, whether it is installed or not.

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If it is not, then with the yum install the name of the package, you can install that package.

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So in our case system configuration settings are according to what we have discussed.