The only command that satisfies every requirement includes the flags --live, --persistent, --undefinesource, and --tunnelled:
--live keeps the guest running during the migration.
--persistent writes the domain XML on the destination so the guest remains defined after reboots.
--undefinesource removes the domain definition from the source host once the migration succeeds.
--tunnelled carries the migration data through the existing libvirt connection, removing the need to open additional ports.
Any command missing one or more of these flags fails at least one requirement-for example, omitting --persistent leaves the VM transient on nodeB, leaving out --tunnelled would require extra firewall openings, using --offline would power the VM off, and omitting --undefinesource would leave the definition on nodeA.
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What does the `--live` flag do in the `virsh migrate` command?
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What does the `--tunnelled` flag achieve in the migration process?
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Why is the `--undefinesource` flag important after a migration?
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CompTIA Linux+ XK0-006 (V8)
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