2091 lines
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2091 lines
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Ansible KVM Router Lab Part 6
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Ansible KVM Router Lab Part 4
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Ansible KVM Router Lab Part 4
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<a href="#connect_vms_to_bridgesbash" class="md-nav__link">
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connect_vms_to_bridges.bash
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check_uid "${USER_UID}"
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function connect_upper_bridge()
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function connect_vm_to_bridge()
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start_vms.bash
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check_uid "${USER_UID}"
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function start_vms()
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rebuild_known_hosts.bash
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<a href="#check_uid-user_uid_2" class="md-nav__link">
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check_uid "${USER_UID}"
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</nav>
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Ansible KVM Router Lab Part 3
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Ansible KVM Router Lab Part 2
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<a href="../ansible-kvm-router-lab-part-1/" class="md-nav__link">
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Ansible KVM Router Lab Part 1
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Add KVM Network With Virsh
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KVM On Arch
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SENDXMPP Handler for Python Logging
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Instruction For Tethering From Phone
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Simplified Raspberry Streaming
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Clear Linux Encrypted XFS Root
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<a href="../clear-linux-guest-virt-manager/" class="md-nav__link">
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Clear Linux Guest Virt Manager
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<a href="../faster-partitioning-with-sgdisk/" class="md-nav__link">
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Faster Partitioning with Sgdisk
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<a href="../lmde3-xfs-full-disk-encryption/" class="md-nav__link">
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LMDE3 XFS Full Disk Encryption
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<a href="../rewrite-hugo-themes-report-in-python/" class="md-nav__link">
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Rewrite Hugo Themes Report In Python
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</ul>
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</nav>
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RSS
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<nav class="md-nav" aria-label="RSS" data-md-level="1">
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RSS
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<ul class="md-nav__list" data-md-scrollfix>
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<a href="../../rss/" class="md-nav__link">
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RSS
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</a>
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<li class="md-nav__item">
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<a href="/feed_rss_created.xml" class="md-nav__link">
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RssCreated
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<li class="md-nav__item">
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<a href="/feed_rss_updated.xml" class="md-nav__link">
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RssUpdated
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</nav>
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<a href="../../links/" class="md-nav__link">
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Links
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<a href="https://git.boringonian.com/trent/trents_blog" class="md-nav__link">
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<a href="https://trentpalmer.org" class="md-nav__link">
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<li class="md-nav__item">
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<a href="https://blog.trentpalmer.org" class="md-nav__link">
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AttentionSpanHistory
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</a>
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<a href="https://github.com/TrentSPalmer" class="md-nav__link">
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GitHub
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<a href="https://twitter.com/boringtrent" class="md-nav__link">
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Twitter
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<a href="https://www.facebook.com/trentspalmer" class="md-nav__link">
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Facebook
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<a href="https://docs.trentsonlinedocs.xyz/" class="md-nav__link">
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TrentDocs
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<a href="https://trentsonlinedocs.xyz/hugo-themes-report/hugo-themes-report.html" class="md-nav__link">
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HugoThemesReport
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</a>
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<a href="https://play.google.com/store/apps/details?id=org.trentpalmer.libre_gps_parser" class="md-nav__link">
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LibreGpsParser
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</a>
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<a href="https://concise-pdx.com/" class="md-nav__link">
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ConcisePDX
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<a href="https://trentspalmer.github.io/fcc-challenges/" class="md-nav__link">
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FreeCodeCampChallenges
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<a href="https://trentpalmer.work/6a57bbe24d8244289610bf57533d6c6f/" class="md-nav__link">
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<a href="../ansible-kvm-router-lab-part-6/" class="md-nav__link">
|
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Ansible KVM Router Lab Part 6
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</a>
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<li class="md-nav__item">
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<a href="../ansible-kvm-router-lab-part-5/" class="md-nav__link">
|
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Ansible KVM Router Lab Part 5
|
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</a>
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</li>
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Ansible KVM Router Lab Part 4
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<span class="md-nav__icon md-icon"></span>
|
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<a href="./" class="md-nav__link md-nav__link--active">
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Ansible KVM Router Lab Part 4
|
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</a>
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
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<span class="md-nav__icon md-icon"></span>
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Table of contents
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<li class="md-nav__item">
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<a href="#introduction" class="md-nav__link">
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Introduction
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</a>
|
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</li>
|
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|
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<li class="md-nav__item">
|
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<a href="#connect_vms_to_bridgesbash" class="md-nav__link">
|
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connect_vms_to_bridges.bash
|
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</a>
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<nav class="md-nav" aria-label="connect_vms_to_bridges.bash">
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<ul class="md-nav__list">
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<li class="md-nav__item">
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<a href="#check_uid-user_uid" class="md-nav__link">
|
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check_uid "${USER_UID}"
|
|
</a>
|
|
|
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</li>
|
|
|
|
<li class="md-nav__item">
|
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<a href="#function-connect_upper_bridge" class="md-nav__link">
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function connect_upper_bridge()
|
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</a>
|
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|
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</li>
|
|
|
|
<li class="md-nav__item">
|
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<a href="#function-connect_lower_bridge" class="md-nav__link">
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function connect_lower_bridge()
|
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</a>
|
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|
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</li>
|
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|
|
<li class="md-nav__item">
|
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<a href="#function-connect_vm_to_bridge" class="md-nav__link">
|
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function connect_vm_to_bridge()
|
|
</a>
|
|
|
|
</li>
|
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|
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</ul>
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</nav>
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</li>
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<li class="md-nav__item">
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<a href="#start_vmsbash" class="md-nav__link">
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start_vms.bash
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</a>
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<nav class="md-nav" aria-label="start_vms.bash">
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<ul class="md-nav__list">
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<li class="md-nav__item">
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<a href="#check_uid-user_uid_1" class="md-nav__link">
|
|
check_uid "${USER_UID}"
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#function-start_vms" class="md-nav__link">
|
|
function start_vms()
|
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item">
|
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<a href="#rebuild_known_hostsbash" class="md-nav__link">
|
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rebuild_known_hosts.bash
|
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</a>
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|
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<nav class="md-nav" aria-label="rebuild_known_hosts.bash">
|
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<ul class="md-nav__list">
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<li class="md-nav__item">
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<a href="#check_uid-user_uid_2" class="md-nav__link">
|
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check_uid "${USER_UID}"
|
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</a>
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</li>
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</ul>
|
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</nav>
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<li class="md-nav__item">
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<a href="#to-be-continued" class="md-nav__link">
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To Be Continued
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</nav>
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<li class="md-nav__item">
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<a href="../ansible-kvm-router-lab-part-3/" class="md-nav__link">
|
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Ansible KVM Router Lab Part 3
|
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</a>
|
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<li class="md-nav__item">
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<a href="../ansible-kvm-router-lab-part-2/" class="md-nav__link">
|
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Ansible KVM Router Lab Part 2
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../ansible-kvm-router-lab-part-1/" class="md-nav__link">
|
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Ansible KVM Router Lab Part 1
|
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</a>
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<li class="md-nav__item">
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<a href="../add-kvm-network-with-virsh/" class="md-nav__link">
|
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Add KVM Network With Virsh
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../kvm-on-arch/" class="md-nav__link">
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KVM On Arch
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</a>
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<li class="md-nav__item">
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<a href="../raspberrypi-lte-failover-router-with-dns-caching/" class="md-nav__link">
|
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RaspberryPi LTE-Failover Router With DNS Caching
|
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</a>
|
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<li class="md-nav__item">
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<a href="../debian-11-nspawn-flutter-integration-test-server/" class="md-nav__link">
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Flutter Integration Test Server in Debian 11 Nspawn Container
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</a>
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<li class="md-nav__item">
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<a href="../debian-11-ttrss/" class="md-nav__link">
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Debian 11 TT-RSS
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</a>
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<a href="../trents-favorite-podcasts/" class="md-nav__link">
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Trent's Favorite Podcasts
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<a href="../test-qr-svg-django/" class="md-nav__link">
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Test QR SVG Django
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<a href="../prosody-photo-uploads/" class="md-nav__link">
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Prosody Photo Uploads
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</a>
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<li class="md-nav__item">
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<a href="../xmpp-apt-notifications/" class="md-nav__link">
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XMPP Apt Notification
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../apache-virtual-hosts/" class="md-nav__link">
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Apache Virtual Hosts
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</a>
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<li class="md-nav__item">
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<a href="../sendxmpp-handler-for-python-logging/" class="md-nav__link">
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SENDXMPP Handler for Python Logging
|
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</a>
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<li class="md-nav__item">
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<a href="../instructions-for-tethering-from-phone/" class="md-nav__link">
|
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Instruction For Tethering From Phone
|
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</a>
|
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</li>
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<li class="md-nav__item">
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<a href="../lmde4-custom-partitions-disk-encryption/" class="md-nav__link">
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LMDE4 Custom Partitions for Disk Encryption
|
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</a>
|
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</li>
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<li class="md-nav__item">
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<a href="../linux-move-cursor-with-keyboard/" class="md-nav__link">
|
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Linux Move Cursor With Keyboard
|
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</a>
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</li>
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<li class="md-nav__item">
|
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<a href="../simplified-raspberry-streaming/" class="md-nav__link">
|
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Simplified Raspberry Streaming
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../clear-linux-encrypted-xfs-root/" class="md-nav__link">
|
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Clear Linux Encrypted XFS Root
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../clear-linux-guest-virt-manager/" class="md-nav__link">
|
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Clear Linux Guest Virt Manager
|
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</a>
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<li class="md-nav__item">
|
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<a href="../faster-partitioning-with-sgdisk/" class="md-nav__link">
|
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Faster Partitioning with Sgdisk
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../lmde3-xfs-full-disk-encryption/" class="md-nav__link">
|
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LMDE3 XFS Full Disk Encryption
|
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</a>
|
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</li>
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<li class="md-nav__item">
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<a href="../rewrite-hugo-themes-report-in-python/" class="md-nav__link">
|
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Rewrite Hugo Themes Report In Python
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</li>
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</ul>
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</nav>
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<li class="md-nav__item">
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<a href="https://git.boringonian.com/trent/trents_blog" class="md-nav__link">
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Source
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</a>
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</li>
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<li class="md-nav__item">
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<a href="https://trentpalmer.org" class="md-nav__link">
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TrentReads
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<li class="md-nav__item">
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<a href="https://blog.trentpalmer.org" class="md-nav__link">
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AttentionSpanHistory
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</a>
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<li class="md-nav__item">
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<a href="https://github.com/TrentSPalmer" class="md-nav__link">
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GitHub
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<a href="https://twitter.com/boringtrent" class="md-nav__link">
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Twitter
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</a>
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<li class="md-nav__item">
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<a href="https://docs.trentsonlinedocs.xyz/" class="md-nav__link">
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TrentDocs
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</a>
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<li class="md-nav__item">
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<a href="https://trentsonlinedocs.xyz/hugo-themes-report/hugo-themes-report.html" class="md-nav__link">
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HugoThemesReport
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</a>
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<li class="md-nav__item">
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<a href="https://play.google.com/store/apps/details?id=org.trentpalmer.libre_gps_parser" class="md-nav__link">
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LibreGpsParser
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</ul>
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</nav>
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</div>
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<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
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<div class="md-sidebar__scrollwrap">
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<div class="md-sidebar__inner">
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
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<label class="md-nav__title" for="__toc">
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<span class="md-nav__icon md-icon"></span>
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Table of contents
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</label>
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
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<a href="#introduction" class="md-nav__link">
|
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Introduction
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#connect_vms_to_bridgesbash" class="md-nav__link">
|
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connect_vms_to_bridges.bash
|
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</a>
|
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|
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<nav class="md-nav" aria-label="connect_vms_to_bridges.bash">
|
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<ul class="md-nav__list">
|
|
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<li class="md-nav__item">
|
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<a href="#check_uid-user_uid" class="md-nav__link">
|
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check_uid "${USER_UID}"
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#function-connect_upper_bridge" class="md-nav__link">
|
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function connect_upper_bridge()
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#function-connect_lower_bridge" class="md-nav__link">
|
|
function connect_lower_bridge()
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#function-connect_vm_to_bridge" class="md-nav__link">
|
|
function connect_vm_to_bridge()
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
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</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#start_vmsbash" class="md-nav__link">
|
|
start_vms.bash
|
|
</a>
|
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<nav class="md-nav" aria-label="start_vms.bash">
|
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<ul class="md-nav__list">
|
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|
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<li class="md-nav__item">
|
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<a href="#check_uid-user_uid_1" class="md-nav__link">
|
|
check_uid "${USER_UID}"
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#function-start_vms" class="md-nav__link">
|
|
function start_vms()
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
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</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#rebuild_known_hostsbash" class="md-nav__link">
|
|
rebuild_known_hosts.bash
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="rebuild_known_hosts.bash">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#check_uid-user_uid_2" class="md-nav__link">
|
|
check_uid "${USER_UID}"
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
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|
</li>
|
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|
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<li class="md-nav__item">
|
|
<a href="#to-be-continued" class="md-nav__link">
|
|
To Be Continued
|
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</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div class="md-content" data-md-component="content">
|
|
<article class="md-content__inner md-typeset">
|
|
|
|
|
|
|
|
|
|
|
|
<h1>Ansible KVM Router Lab Part 4</h1>
|
|
|
|
<p>date: 2021-10-17</p>
|
|
<h2 id="introduction">Introduction</h2>
|
|
<p>This is Part 4 of a multi-part series of blog posts for building a
|
|
<a href="https://github.com/TrentSPalmer/router-lab" target="_blank">router lab</a>
|
|
automatically using a series of bash scripts and ansible.</p>
|
|
<p><a href="/posts/ansible-kvm-router-lab-part-1/" target="_blank">Ansible KVM Router Lab Part 1</a>
|
|
is an overview.</p>
|
|
<p>In <a href="/posts/ansible-kvm-router-lab-part-2/" target="_blank">Ansible KVM Router Lab Part 2</a>,
|
|
I break down the script
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/build_vms.bash" target="_blank">build_vms.bash</a>.</p>
|
|
<p>In <a href="/posts/ansible-kvm-router-lab-part-3/" target="_blank">Ansible KVM Router Lab Part 3</a>,
|
|
I explain
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/define_bridge_networks.bash" target="_blank">define_bridge_networks.bash</a>
|
|
and <a href="https://github.com/TrentSPalmer/router-lab/blob/master/shutdown_vms.bash" target="_blank">shutdown_vms.bash</a>
|
|
scripts which are used to construct the lab.</p>
|
|
<p>In this post I explain
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/connect_vms_to_bridges.bash" target="_blank">connect_vms_to_bridges.bash</a>,
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/start_vms.bash" target="_blank">start_vms.bash</a>,
|
|
and
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/rebuild_known_hosts.bash" target="_blank">rebuild_known_hosts.bash</a>
|
|
scripts which are used to construct the lab.</p>
|
|
<p>In <a href="/posts/ansible-kvm-router-lab-part-5/" target="_blank">Ansible KVM Router Lab Part 5</a>,
|
|
I explain the ansible playbook tasks used to finish building the lab.</p>
|
|
<p>In <a href="/posts/ansible-kvm-router-lab-part-6/" target="_blank">Ansible KVM Router Lab Part 6</a>,
|
|
I explain
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/disconnect_vms_from_bridges.bash" target="_blank">disconnect_vms_from_bridges.bash</a>,
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/undefine_and_remove_vms.bash" target="_blank">undefine_and_remove_vms.bash</a>,
|
|
and <a href="https://github.com/TrentSPalmer/router-lab/blob/master/remove_bridge_networks.bash" target="_blank">remove_bridge_networks</a>
|
|
which are used to destroy the lab.</p>
|
|
<h2 id="connect_vms_to_bridgesbash"><code>connect_vms_to_bridges.bash</code></h2>
|
|
<p>Aside from the <em>out-of-band</em> network which can be used to contact the lab clients
|
|
directly, the lab clients are connected to each other using two bridge networks.</p>
|
|
<p>As explained in
|
|
<a href="/posts/ansible-kvm-router-lab-part-1/" target="_blank">Ansible KVM Router Lab Part 1</a>,
|
|
lab clients one and two are connected to the upper bridge, and lab clients two, three, four,
|
|
and five are connected to the lower bridge with the first client acting as a router
|
|
for the second client, and the second client acting as a client for the third, fourth, and
|
|
fifth clients.</p>
|
|
<h3 id="check_uid-user_uid"><code>check_uid "${USER_UID}"</code></h3>
|
|
<p><a href="https://github.com/TrentSPalmer/router-lab/blob/master/connect_vms_to_bridges.bash">connect_vms_to_bridges.bash</a>
|
|
begins by making sure that it is run as a <em>non-privileged</em> user. You can call
|
|
the script with <code>bash connect_vms_to_bridges.bash</code>.</p>
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<h3 id="function-connect_upper_bridge"><code>function connect_upper_bridge()</code></h3>
|
|
<p><code>connect_upper_bridge</code> calls <code>connect_vm_to_bridge</code> against the first lab client and the upper bridge,
|
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and again against the second lab client and the upper bridge.</p>
|
|
<h3 id="function-connect_lower_bridge"><code>function connect_lower_bridge()</code></h3>
|
|
<p><code>connect_lower_bridge</code> calls <code>connect_vm_to_bridge</code> against the second lab client and the lower bridge,
|
|
against the third lab client and the lower bridge, against the fourth lab client and the lower bridge,
|
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and against the fifth lab client and the lower bridge.</p>
|
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<h3 id="function-connect_vm_to_bridge"><code>function connect_vm_to_bridge()</code></h3>
|
|
<p><code>connect_vm_to_bridge</code> parses the output of <code>virsh dominfo</code> against the intended lab client to verify that it
|
|
is shutdown. Then, if the intended lab client is shutdown, <code>connect_vm_to_bridge</code> parses the output of
|
|
<code>virsh domiflist</code> to find out if the intended new interface is yet defined, and if not invokes
|
|
<code>virsh attach-interface <vm> --type network --source <bridge network></code>. Finally, <code>connect_vm_to_bridge</code>
|
|
recursively calls itself for verification.</p>
|
|
<h2 id="start_vmsbash"><code>start_vms.bash</code></h2>
|
|
<p>After defining the new network interfaces for all the lab clients, you can boot them.</p>
|
|
<h3 id="check_uid-user_uid_1"><code>check_uid "${USER_UID}"</code></h3>
|
|
<p><a href="https://github.com/TrentSPalmer/router-lab/blob/master/start_vms.bash">start_vms.bash</a>
|
|
begins by making sure that it is run as a <em>non-privileged</em> user. You can call
|
|
the script with <code>bash start_vms.bash</code>.</p>
|
|
<h3 id="function-start_vms"><code>function start_vms()</code></h3>
|
|
<p><code>start_vms</code> calls <code>start_vm</code> against the entire MACHINES array, simultaneously.
|
|
<code>start_vm</code> is exported from
|
|
<a href="https://github.com/TrentSPalmer/router-lab/blob/master/env.bash.example" target="_blank">env.bash</a>,
|
|
and per parsing the output of <code>virsh list --inactive</code>, starts the virtual machine if it is not running.</p>
|
|
<h2 id="rebuild_known_hostsbash"><code>rebuild_known_hosts.bash</code></h2>
|
|
<p>You will need to have a valid list of known_hosts in order for ansible to connect to the lab
|
|
clients.</p>
|
|
<p>The script deletes <code>~/.ssh/known_hosts</code> and then initiates an ssh connection to all the router lab clients
|
|
in order to repopulate <code>~/.ssh/known_hosts</code>.</p>
|
|
<h3 id="check_uid-user_uid_2"><code>check_uid "${USER_UID}"</code></h3>
|
|
<p><a href="https://github.com/TrentSPalmer/router-lab/blob/master/rebuild_known_hosts.bash">rebuild_known_hosts.bash</a>
|
|
begins by making sure that it is run as a <em>non-privileged</em> user. You can call
|
|
the script with <code>bash rebuild_known_hosts</code>.</p>
|
|
<h2 id="to-be-continued">To Be Continued</h2>
|
|
<p>In the next blog post,
|
|
<a href="/posts/ansible-kvm-router-lab-part-5/" target="_blank">Ansible KVM Router Lab Part 5</a>,
|
|
I explain the ansible playbook tasks used to finish building the lab.</p>
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