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Install CentOS 7.6 Minimal


  • Internet access and web browser
  • VMware (Workstation or Player) or another VM platform
  • The CentOS host should have the following firewall configuration:


    Identify latest container versions.

    Outbound443HTTPSOpen Collector*

    Download latest Open Collector software.

    Outbound443HTTPSOpen Collectorget.docker.comDownload docker repositories.
    Outbound443HTTPSOpen container images.
    Outbound443HTTPSOpen Collectorstorage.googleapis.comAuto-update feature.
    Outbound443HTTPSOpen feature.
    Outbound443HTTPSOpen Collectordownload.docker.comAllows for LRCTL installation of Open Collector
    Outbound443HTTPSOpen Collectorregistry-1.docker.ioAllows for LRCTL installation of Open Collector
    Outbound443HTTPSOpen Collectorauth.docker.ioAllows for LRCTL installation of Open Collector
    Outbound443HTTPSOpen Collectorproduction.cloudflare.docker.comAllows for LRCTL installation of Open Collector
    Outbound514TCP - SyslogOpen CollectorWindows System Monitor AgentSyslog feed of data to LogRhythm SIEM.
    Outbound**6514TCP+TLS - Secure SyslogOpen CollectorWindows System Monitor AgentSecure syslog feed of data to LogRhythm SIEM.
    Outbound8076TCP - Influx/VitalsOpen CollectorPlatform ManagerData feed for Centralized Metrics (LogRhythm 7.5+ only).
    Inbound3000HTTPUser machineOpen CollectorView Open Collector metrics in Grafana.
    Inbound22SSHUser machineOpen CollectorInteract with Open Collector.
    Inbound5044TCP - LumberjackBeatsOpen CollectorMethod to send data from Beats collected outside the Open Collector.

    **indicates optional setting

Install CentOS 7 Minimal

  1. Download CentOS 7 Minimal from
  2. Create a VM with the following settings:
    • CPU: 8 cores (or more)
    • RAM: 8 GB (or more)
    • HDD: 50 GB (or more)
    • DVD: CentOS-7-x86_64-Minimal-1908.iso
    • User: In addition to the root user, create the following user:
      • username: logrhythm
      • password: <enter a password of your choice>
  3. On initial boot, log in as the root user.

  4. Add the new logrhythm user to the sudoers wheel:

    usermod -aG wheel logrhythm
  5. Reboot the VM, and log in as the logrhythm user.

OS Installation

  1. Boot your VM with your installation media attached to the virtual CD-ROM drive (.iso format).
  2. Select Install CentOS 7.
  3. Wait for the media check to complete.
  4. Once the CentOS 7 installer GUI starts, select your language localization settings, and click Continue.

    The Installation Summary screen appears.
  5. In the System section, click Network & Host Name. (This is required to get networking on your VM without manual configuration.)
  6. In the upper-right corner, click the toggle switch to On.  

    The VM retrieves an IP address and DNS settings using DHCP (IPs and MAC redacted for security reasons).
  7. In the upper-left corner, click Done.
    The Installation Summary screen appears.
  8. In the Localization section, click Date & Time.  
    The Date & Time screen appears.
  9. Confirm the date and time are correct. 

    You can also use the Network Time (NTP) option (networking must be configured to use this option).
  10. In the upper-left corner, click Done.
    The Installation Summary screen appears.
  11. In the System section, click Installation Destination.  
    The Installation Destination screen appears.
  12. Ensure your local disk is selected. The recommended disk capacity is 50GB.
  13. In the upper-left corner, click Done.
    The Installation Summary screen appears
  14. In the bottom-right corner, click Begin Installation.
  15. During the installation process, you can configure a root password and additional users.
  16. To set a root password, click Root Password.
  17. Click User Creation, and create a logrhythm user with a strong password. 

    You can also create a logrhythm user manually after installation.
  18. Once installation is complete, click Reboot in the lower-right corner.

    Make sure to remove the installation media. The method for removal is hypervisor-specific.

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