Welcome to Scyld ClusterWare's documentation!

• Documentation Overview
• Quickstart Guide
• Release Notes
• Supported Distributions and Features
• Cluster Overview and Terminology Guide
  • Cluster Architecture Overview
  • Scyld ClusterWare Software Overview
    • The ClusterWare Database
    • Provisioning Compute Nodes
• Installation & Administrator Guide
  • Introduction
  • Required and Recommended Components
  • Initial Installation of Scyld ClusterWare
    • Download the ClusterWare install script and related files
    • Execute the ClusterWare install script
    • Configure additional cluster administrators
  • Common Additional Configuration and Software
    • Configure Hostname
    • Choosing An Alternate Database
      • Database Differences
      • Switching Between Databases
    • Couchbase auto-failover
    • Configure Authentication
    • Disable/Enable Chain Booting
    • Installing Optional ClusterWare Software
    • Job Schedulers
      • Slurm
      • PBS TORQUE
      • OpenPBS
    • Kubernetes
    • scyld-nss Name Service Switch (NSS) Tool
    • Firewall Configuration
    • Install OpenMPI, MPICH, and/or MVAPICH
    • Configure IP Forwarding
    • Install Additional Tools
  • Node Images and Boot Configurations
    • Compute Node Fields
    • Compute Nodes IPMI access
    • Boot Configurations
    • Creating PXEboot Images
    • Recreating the Default Image
    • Modifying PXEboot Images
      • Updating the kernel in an image
    • Capturing and Importing PXEboot Images
    • Deleting unused images and boot configurations
    • Copying boot configurations between head nodes
    • Wrapper scripts
      • Repos and Distros
      • Using Archived Releases
      • Using ISO Releases
      • Installing Software With Subscriptions
    • Adding 3rd-party software
  • Using Kickstart
    • Uploading ISO Images
    • Kickstarting Installations
    • Kickstart Files
  • Using RHCOS
  • Booting Diskful Compute Nodes
  • Interacting with Compute Nodes
    • Node Creation with Known MAC address(es)
    • Node Creation with Unknown MAC address(es)
    • Changing IP addresses
    • Replacing Failed Nodes
    • Node Name Resolution
    • Executing Commands
    • Node Attributes
    • Node Names and Pools
    • Attribute Groups and Dynamic Groups
  • Securing the Cluster
    • Authentication
    • Changing the Database Password
      • Couchbase
      • etcd
    • Compute Node Remote Access
    • Compute Node Host Keys
    • Encrypting Communications
    • Security-Enhanced Linux (SELinux)
      • SELinux On Compute Nodes
      • SELinux On Head Nodes
      • MLS Policy On Head Nodes
    • Security Technical Implementation Guides (STIG)
  • Monitoring the Status of the Cluster
    • scyld-nodectl status
    • Chronograf GUI
  • Graphical Interface
  • Managing Multiple Head Nodes
    • Adding A Head Node
      • Join a non-ClusterWare server using scyld-install
      • Join a ClusterWare head node using scyld-install
      • Join a non-ClusterWare server using curl
      • Join a ClusterWare head node using curl
      • After a Join
    • Removing a Joined Head Node
      • Configuring Support for Database Failover
      • Shared Storage and Peer Downloads
    • Booting With Multiple Head Nodes
    • Switching To Alternative ClusterWare Database
  • Managing Node Failures
    • Head Node Failure
  • Managing Large Clusters
    • Improve scaling of node booting
  • Backup and Restore
    • Backup and Restore of ClusterWare
    • Backup and Restore of the Database
  • Updating Scyld ClusterWare
  • Troubleshooting ClusterWare
    • Failing PXE Network Boot
    • Kickstart Failing
    • Head Node Filesystem Is 100% Full
      • Verify excessive storage is related to ClusterWare
      • Remove unnecessary objects from the ClusterWare database
      • Investigate InfluxDB retention of Telegraf data
      • Remove unnecessary PXEboot images, repos
      • Otherwise
    • Exceeding System Limit of Network Connections
    • etcd Database Exceeds Size Limit
    • Failing To Boot From Local Storage
    • IP Forwarding
    • Soft Power Control Failures
    • Head Nodes Disagree About Compute Node State
    • Finding Further Information
    • Contacting Penguin Computing Support
  • IPMI
    • IPMITool
  • Services, Ports, Protocols
    • Apache
    • Couchbase
    • DHCP
    • etcd
    • iSCSI
    • OpenSSH
    • Telegraf / InfluxDB
    • TFTP
• Reference Guide
  • Introduction
  • Important Files on Head Nodes
    • The ~/.scyldcw/ Folder
      • auth_tkt.cookie
      • logs/
      • workspace/
      • parse_failures/
    • The /opt/scyld/clusterware/ Folder
      • /opt/scyld/clusterware/bin/
      • /opt/scyld/clusterware/conf/
      • /opt/scyld/env/, modules/, and src/
      • /opt/scyld/clusterware/parse_failures/
      • /opt/scyld/clusterware/storage/
      • /opt/scyld/clusterware/workspace/
  • Compute Node Initialization Scripts
  • Database Objects Fields and Attributes
  • Reserved Attributes
    • _ansible_pull
    • _ansible_pull_now
    • _boot_config
    • _boot_rw_layer
    • _boot_style
    • _boot_tmpfs_size
    • _coreos_ignition_url
    • _coreos_install_dev
    • _disk_cache
    • _disk_root
    • _disk_wipe
    • _gateways
    • _health
    • _hostname
    • _hosts
    • _ips
    • _ipxe_sanboot
    • _macs
    • _no_boot
    • _preferred_head
    • _remote_pass
    • _remote_user
    • _status_hardware_secs
    • _status_packages_secs
    • _status_secs
    • _tpm_owner_pass
  • Introduction to Tools
    • --all and --ids
    • --config
    • --base-url and --user
    • --show-uids, --human, --json, --pretty/--no-pretty
    • --csv, --table, --fields
  • Common Subcommand Actions
    • list (ls)
    • create (mk)
    • clone (cp)
    • update (up)
    • replace (re)
    • delete (rm)
  • The then argument
  • The --content argument
  • Files in database objects
  • Scyld ClusterWare Administrator Tools
    • scyld-add-boot-config
    • scyld-adminctl
    • scyld-attribctl
    • scyld-bootctl
    • scyld-cluster-conf
    • scyld-clusterctl
    • scyld-imgctl
    • scyld-install
    • scyld-kube
    • scyld-mkramfs
    • scyld-modimg
    • scyld-nodectl
    • scyld-nssctl
    • scyld-reports
    • scyld-sysinfo
    • scyld-tool-config
  • Scyld ClusterWare Maintenance Tools
    • headctl
    • make-iso
    • managedb
    • take-snapshot
• Appendices
  • Appendix: Creating Local Repositories without Internet
  • Appendix: Creating Arbitrary CentOS Images
  • Appendix: Creating Arbitrary RHEL Images
  • Appendix: Creating Ubuntu and Debian Images
  • Appendix: Converting CentOS 8 to Alternative Distro
  • Appendix: Using Ansible
  • Appendix: Using Kubernetes
  • Appendix: Using Docker
  • Appendix: Using Singularity
  • Appendix: Creating Diagnostic Test Images
  • Appendix: Booting From Local Storage Cache
  • Appendix: Validating ClusterWare ISOs
  • Appendix: Managing Zero-Touch Provisioning (ZTP)
• Changelog
  • Known Issues And Workarounds
• ClusterWare 6/7 vs. Current ClusterWare
• License Agreements
  • Scyld ClusterWare End-User License Agreement
  • Third-Party License Agreements
• Frequently Asked Questions (FAQ)
  • Software Install/Update
  • Cluster Management
  • Manipulating Compute Node Images
  • Issues with Interacting with Compute Nodes
• Feedback