Outcome: An operator creates a Server backup, validates it, restores when necessary and verifies inventory, identity continuity, access policy and real application reachability.
A restore replaces security-sensitive persistent state and can interrupt clients. Perform the restore step only during an explicitly approved recovery window on the intended Server, after reviewing the archive and target version. Do not use this procedure to test casually on a production instance.
Figure 1. Captured product build identity: check product version and DRLink Server role. CLI output example; sensitive addresses and hostnames are masked.Server shell:
sudo drlink system versionsudo drlink show statussudo drlink system diagnosticssudo drlink show managed-hostssudo drlink show remote-accesssudo drlink show internet-accesssudo drlink show ai-access
Record the installed version, active Managed Hosts, Remote Service endpoints and policy modes. A backup from an unrelated release is not automatically compatible.
Figure 2. Server System menu: 3 Backup & Restore, 5 Diagnostics, 8 Version Information. CLI output example; sensitive addresses and hostnames are masked.Server REPL:
system backup
Record the exact archive path printed by the product. Use the built-in workflow: /var/lib/drlink/drlink.db and the PKI, secrets, policies, registry and reservations must form a consistent snapshot. Copy the archive to secure off-host storage using your approved encrypted transfer/backup mechanism, never to a public docs repository. Do not copy only the live SQLite file (WAL consistency risk).
sudo drlink system backup validate <exact-backup-archive-path>
Expected: successful integrity/format/version validation. This is read-only and must complete before a restore. A corrupt or incompatible archive is not a recovery candidate.
sudo drlink system restore <validated-backup-archive-path>
Review the product’s confirmation and access-impact information; do not automatically answer Yes. The product should snapshot and validate its state transition and report any incomplete rollback honestly. Record all failure evidence before attempting another recovery.
Step 5 — verify identity and real traffic after restoration
Figure 3. Real Agent diagnostics excerpt: inspect runtime/Server connectivity after recovery. CLI output example; sensitive addresses and hostnames are masked.Server REPL:
show statusshow managed-hostsshow remote-accessshow internet-accessshow ai-accesssystem diagnosticssystem revisions
On each affected Agent Host:
show agentshow remote-servicessystem diagnosticssystem synchronize
Check that immutable Managed Host identities, Remote Service IDs and public endpoint reservations were preserved wherever compatible, and that Agents reconnected/reconciled the active generation. Then run an actual approved SSH or Internet Access application request plus one intentionally denied policy request as in the corresponding playbooks.
Backup validation FAIL: do not restore. Keep evidence and obtain a healthy compatible archive.
Agent missing after restore: check original identity/trust, management connectivity and Agent sync; do not immediately re-enroll and lose the identity history.
Policy changed unexpectedly: compare current revision and backup baseline before authorizing another mutation. Never reset Remote Access policy merely to restore connectivity, because initial Remote Access is ALLOW.
Service appears HEALTHY without real traffic: verify the application’s endpoint separately. Runtime/heartbeat status alone does not prove the destination is reachable.
After restore, backup-time host presence and proxy health require fresh Agent verification. Connected Agents reconcile when the Server lacks current Remote Service verification; run diagnostics/synchronize and test real traffic. Keep both the archive and error evidence if restore or rollback fails.Current CLI inventory · MCP compatibility
Last modified on October 28, 2026
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A backup from an unrelated release is not automatically compatible.`}),`\n`,_jsx(Heading,{level:`2`,id:`step-2-—-create-and-securely-retain-the-backup`,children:`Step 2 — create and securely retain the backup`}),`\n`,_jsx(OptimizedImage,{src:`https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=1671593497d20f954b4279441e133a91`,alt:`Real Data Relay Link CLI capture — Server System menu: 3 Backup \u0026 Restore, 5 Diagnostics, 8 Version Information.`,\"data-og-width\":`2040`,width:`2040`,\"data-og-height\":`913`,height:`913`,\"data-path\":`images/cli-captures/server-system-menu.png`,\"data-optimize\":`true`,\"data-opv\":`3`,srcset:`https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=280\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=cff595312da5d9b753575113c3d7f80f 280w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=560\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=dcd05ad412e85cfbc1ab9ff0eb5a3ef5 560w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=840\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=12dd931eb32262380d6a57c70ce196ea 840w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=1100\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=f4db352f6b13a3acbdd46387a634b932 1100w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=1650\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=5f193766ba7dc6223e13d195e252176b 1650w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/server-system-menu.png?w=2500\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=93765af78df200ee1706d2f8e1ee70e1 2500w`}),`\n`,_jsx(_components.p,{children:_jsx(_components.em,{children:`Figure 2. Server System menu: 3 Backup \u0026 Restore, 5 Diagnostics, 8 Version Information. CLI output example; sensitive addresses and hostnames are masked.`})}),`\n`,_jsx(_components.p,{children:_jsx(_components.strong,{children:`Server REPL:`})}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`2`,language:`text`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`text`,children:_jsxs(_components.code,{language:`text`,numberOfLines:`2`,children:[_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{children:`system backup`})}),`\n`,_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{})})]})})}),`\n`,_jsxs(_components.p,{children:[`Record the `,_jsx(_components.strong,{children:`exact archive path printed by the product`}),`. Use the built-in workflow: `,_jsx(_components.strong,{children:`/var/lib/drlink/drlink.db`}),` and the PKI, secrets, policies, registry and reservations must form a consistent snapshot. Copy the archive to secure off-host storage using your approved encrypted transfer/backup mechanism, never to a public docs repository. Do not copy only the live SQLite file (WAL consistency risk).`]}),`\n`,_jsx(Heading,{level:`2`,id:`step-3-—-validate-the-archive-before-recovery`,children:`Step 3 — validate the archive before recovery`}),`\n`,_jsxs(_components.p,{children:[_jsx(_components.strong,{children:`Server shell`}),`, using the output path from Step 2:`]}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`1`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`1`,children:[_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`sudo`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` drlink`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` system`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` backup`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` validate`}),_jsx(_components.span,{style:{color:`#CF222E`,\"--shiki-dark\":`#D4D4D4`},children:` \u003c`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`exact-backup-archive-pat`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`h`}),_jsx(_components.span,{style:{color:`#CF222E`,\"--shiki-dark\":`#D4D4D4`},children:`>`})]}),`\n`]})})}),`\n`,_jsxs(_components.p,{children:[`Expected: successful integrity/format/version validation. This is read-only and must complete `,_jsx(_components.strong,{children:`before`}),` a restore. A corrupt or incompatible archive is not a recovery candidate.`]}),`\n`,_jsx(Heading,{level:`2`,id:`step-4-—-restore-only-when-authorized`,children:`Step 4 — restore only when authorized`}),`\n`,_jsx(_components.p,{children:`Under the approved recovery plan:`}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`1`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light-default dark-plus`,style:{backgroundColor:`#ffffff`,\"--shiki-dark-bg\":`#0B0C0E`,color:`#1f2328`,\"--shiki-dark\":`#D4D4D4`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`1`,children:[_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#953800`,\"--shiki-dark\":`#DCDCAA`},children:`sudo`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` drlink`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` system`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:` restore`}),_jsx(_components.span,{style:{color:`#CF222E`,\"--shiki-dark\":`#D4D4D4`},children:` \u003c`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`validated-backup-archive-pat`}),_jsx(_components.span,{style:{color:`#0A3069`,\"--shiki-dark\":`#CE9178`},children:`h`}),_jsx(_components.span,{style:{color:`#CF222E`,\"--shiki-dark\":`#D4D4D4`},children:`>`})]}),`\n`]})})}),`\n`,_jsxs(_components.p,{children:[`Review the product’s confirmation and access-impact information; `,_jsx(_components.strong,{children:`do not automatically answer Yes`}),`. The product should snapshot and validate its state transition and report any incomplete rollback honestly. Record all failure evidence before attempting another recovery.`]}),`\n`,_jsx(Heading,{level:`2`,id:`step-5-—-verify-identity-and-real-traffic-after-restoration`,children:`Step 5 — verify identity and real traffic after restoration`}),`\n`,_jsx(OptimizedImage,{src:`https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=0c1d10cec03dbbd66d89afde396e95a4`,alt:`Real Data Relay Link CLI capture — Real Agent diagnostics excerpt: inspect runtime/Server connectivity after recovery.`,\"data-og-width\":`2040`,width:`2040`,\"data-og-height\":`1300`,height:`1300`,\"data-path\":`images/cli-captures/agent-diagnostics.png`,\"data-optimize\":`true`,\"data-opv\":`3`,srcset:`https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=280\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=89482ae998040ae02255ce68b63b3590 280w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=560\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=ba1d9f67605b019c057588ba88bedf89 560w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=840\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=475baca3a45273bbc132d0cf601d11a1 840w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=1100\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=5850f3a5e61f59cc1dd1e83630b1d4db 1100w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=1650\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=6ffbd0ad6d69a3616e374b8ad67d07eb 1650w, https://mintcdn.com/data-relay/RzAl7zFhuZCRSIKj/images/cli-captures/agent-diagnostics.png?w=2500\u0026fit=max\u0026auto=format\u0026n=RzAl7zFhuZCRSIKj\u0026q=85\u0026s=e0a48329efce83261f25bd33d773c26d 2500w`}),`\n`,_jsx(_components.p,{children:_jsx(_components.em,{children:`Figure 3. 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