30 Things to Do After Minimal RHEL/CentOS 7 Installation

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64 Responses

  1. whatthehell says:

    The articel does only contain nonsense. Why somebody should protect grub when it can be by passed so easy?
    A speedtest cronjob? wtf?

  2. Atul K Srivastava says:

    When i change the Listen directive and restart the httpd following error occurs.

    Job for httpd.service failed. See ‘systemctl status httpd.service’ and ‘journalctl -xn’ for details.

    This happen when i tried to change Listen to 3221, 9090 or :9090 .. anything.
    While it works fine for port 80 and 8080

    • Sveat says:

      Hi Atul. This could be caused by SELinux. Check if it is enabled by running “sestatus“. If it says enabled, you have to ways:

      1. Disable SELinux by running ‘setenforce 0‘;
      2. Add SE rules (using ‘semanage‘ command). In this case you will have SELinux enabled (which is recommended);

  3. Andrew Smallwood says:

    Hey, thank you for this list. It has been invaluable for me while setting up a new CentOS 7 configuration. I’m technical but this is easily understandable and readable for anyone.

  4. Zack says:

    Hi Guys,

    Cant open my website with elinks. It is saying that I need to enable my javascript. How to do that on centos7 minimal.
    Thanks

  5. ryan says:

    Use Secure Protocol over the default SSH Protocol and change port number also for extra Security. Edit the SSH configuration file ‘/etc/ssh/ssh_config‘.

  6. feldhaser says:

    why install wget? isn’t curl available by default?

  7. Omar Mohammad Sawalhah says:

    Hi,
    The following
    # firewall-cmd -permanent -add-port=3221/tcp
    should be
    # firewall-cmd –permanent –add-port=3221/tcp

  8. mohamed ahmed says:

    4.unable to chown

  9. kumar says:

    Hi, is anybody help me I am new to CentOS 7, regarding I am unable to enter into root mode.

    After reading point #22, I tried commands, but now i am unable to get into:

    1.sudo mode  
    2.unable to edit visudo
    3.unable to chmod 
    4.unable to chown
    5.unable to get into su-
    6.unable to get into su-
    

    why this happened it always says even i tried to attempt…

    sudo: >>> /etc/sudoers: syntax error near line 45 <<>> /etc/sudoers: syntax error near line 101 <<<
    sudo: parse error in /etc/sudoers near line 45

    sudo: no valid sudoers sources found, quitting
    sudo: unable to initialize policy plugin

    please help me i am new to cent os 7

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