splunk installation centos 7

[root@compute ~]#  wget -O splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm 'https://www.splunk.com/bin/splunk/DownloadActivityServlet?architecture=x86_64&platform=linux&version=7.1.2&product=splunk&filename=splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm&wget=true'
--2019-10-09 06:44:16--  https://www.splunk.com/bin/splunk/DownloadActivityServlet?architecture=x86_64&platform=linux&version=7.1.2&product=splunk&filename=splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm&wget=true
Resolving www.splunk.com (www.splunk.com)... 23.200.79.91, 23.200.79.89
Connecting to www.splunk.com (www.splunk.com)|23.200.79.91|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://download.splunk.com/products/splunk/releases/7.1.2/linux/splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm [following]
--2019-10-09 06:44:19--  https://download.splunk.com/products/splunk/releases/7.1.2/linux/splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm
Resolving download.splunk.com (download.splunk.com)... 13.227.143.128, 13.227.143.12, 13.227.143.115, ...
Connecting to download.splunk.com (download.splunk.com)|13.227.143.128|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 264129476 (252M) [application/x-rpm]
Saving to: ‘splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm’

100%[======================================>] 264,129,476 4.83MB/s   in 52s

2019-10-09 06:45:11 (4.89 MB/s) - ‘splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm’ saved [264129476/264129476]

[root@compute ~]# rpm -ivh splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm
warning: splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 653fb112: NOKEY
Preparing...                          ################################# [100%]
useradd: cannot create directory /opt/splunk
Updating / installing...
   1:splunk-7.1.2-a0c72a66db66        ################################# [100%]
complete
[root@compute ~]#

[root@compute bin]# pwd

/opt/splunk/bin

[root@compute bin]#./splunk start

Splunk Software License Agreement 04.24.2018

Do you agree with this license? [y/n]: y

This appears to be your first time running this version of Splunk.

Create credentials for the administrator account.

Characters do not appear on the screen when you type the password.

Password must contain at least:

   * 8 total printable ASCII character(s).

Please enter a new password:

Please confirm new password:

Copying '/opt/splunk/etc/openldap/ldap.conf.default' to '/opt/splunk/etc/openldap/ldap.conf'.

Generating RSA private key, 2048 bit long modulus

.....+++

........+++

e is 65537 (0x10001)

writing RSA key

Generating RSA private key, 2048 bit long modulus

............+++

.....+++

e is 65537 (0x10001)

writing RSA key

Moving '/opt/splunk/share/splunk/search_mrsparkle/modules.new' to '/opt/splunk/share/splunk/search_mrsparkle/modules'.

Splunk> See your world.  Maybe wish you hadn't.

Checking prerequisites...

        Checking http port [8000]: open

        Checking mgmt port [8089]: open

        Checking appserver port [127.0.0.1:8065]: open

        Checking kvstore port [8191]: open

        Checking configuration...  Done.

                Creating: /opt/splunk/var/lib/splunk

                Creating: /opt/splunk/var/run/splunk

                Creating: /opt/splunk/var/run/splunk/appserver/i18n

                Creating: /opt/splunk/var/run/splunk/appserver/modules/static/css

                Creating: /opt/splunk/var/run/splunk/upload

                Creating: /opt/splunk/var/spool/splunk

                Creating: /opt/splunk/var/spool/dirmoncache

                Creating: /opt/splunk/var/lib/splunk/authDb

                Creating: /opt/splunk/var/lib/splunk/hashDb

New certs have been generated in '/opt/splunk/etc/auth'.

        Checking critical directories...        Done

        Checking indexes...

                Validated: _audit _internal _introspection _telemetry _thefishbucket history main summary

        Done

        Checking filesystem compatibility...  Done

        Checking conf files for problems...

        Done

        Checking default conf files for edits...

        Validating installed files against hashes from '/opt/splunk/splunk-7.1.2-a0c72a66db66-linux-2.6-x86_64-manifest'

        All installed files intact.

        Done

All preliminary checks passed.

Starting splunk server daemon (splunkd)...

Generating a 2048 bit RSA private key

.............+++

........................................+++

writing new private key to 'privKeySecure.pem'

-----

Signature ok

subject=/CN=compute.example.com/O=SplunkUser

Getting CA Private Key

writing RSA key

Done

                                                           [  OK  ]

Waiting for web server at http://127.0.0.1:8000 to be available........... Done

If you get stuck, we're here to help.

Look for answers here: http://docs.splunk.com

The Splunk web interface is at http://compute.example.com:8000

[root@compute bin]#

https://docs.google.com/document/d/e/2PACX-1vTeTxn70FprTYEkl9VhU3-j6kBb9Xx10ePibk-PQ7yIJei29m6uRYAp_LBKGidu_LfxijednS3OTF7Z/pub

search
/var/log/secure

https://docs.google.com/document/d/e/2PACX-1vQjogxa70SHAzLDXj1a-wFSoshavhBI7iN8Ih7fNWBVR-pkvk4wJqY5xWW670GqFcu86IcPPT5E3Q6Y/pub