Let us verify our master system is having the setting, as we have discussed, so in
our case, we will go to, our, these three systems are there Master c10 and c20.
So what we are going to do, we will go to the master system and we will check this command hostname,
and we can see that it is master.example.com.
Then with dnsdomainname, we can check what is our domain name.
It is example.com.
Then we can check the entries in /etc/hosts file.
So the settings are there 172.24.0.1, and the name of the system is there.
Then we can verify the IP address, ip a s with ens33, whether it is having the proper
address or not, 172.24.0.1 is there.
And then we are going to check whether our sestatus it is disabled and we can verify that by using
that file.
Also /etc/sysconfig/selinux
so it is going to show you whether it is in disable state or not.
So selinux is in disabled and regarding iptables, whether our firewall is allowing
all traffic or not.
We can use this command iptables -L, and then we can check with our main packages regarding
Apache.
They are installed or not.
query httpd we will find that that package is installed.
Then we will check openssl it is available or not then mod.
ssl so we can verify these all and the other packages also can be verify, in our
case.
This lab is properly ready.
That means with rpm command, you can check all the things and we have checked the IP addresses also.
And what was the file in which we have made the changes that we showed you that also it is the /etc
sysconfig/network-scripts and the file name is ifcfg.
ens33, so here you will see that the entries are static, bootprotocol static and IP addresses is 172.24
.0.1 and netmask is this and if we are going to check the settings, what are the machine settings, we
will find that it is bridge.
that is we wanted initially it was NAT.
So we changed the setting to bridge.
that mean the system in our case is according to what we have specified, you can check and verify each and
every package, whether it is installed or not.
If it is not, then with the yum install the name of the package, you can install that package.
So in our case system configuration settings are according to what we have discussed.