ECS: xDoctor RAP137 Totaal swapgeheugen inconsistent in het ECS-rack

xDoctor meldt:

------------------------------------------------------------
WARNING - Total swap memory inconsistent across the ECS rack
------------------------------------------------------------
Node      = Nodes
Extra     = {'Nodes': {'16383': ['169.254.1.8', '169.254.1.7', '169.254.1.6', '169.254.1.4', '169.254.1.3', '169.254.1.2', '169.254.1.1'], '8191': ['169.254.1.5']}}
Timestamp = 2022-12-01_145111
PSNT      = CKM00190800120 @ 4.8-87.0

• Na opnieuw opstarten van een knooppunt is de SWAP-configuratie niet opgeslagen in /etc/fstab.
• De native SWAP-partitie is niet geladen bij het opstarten.
• Er is een nieuwe image van het knooppunt gemaakt en SWAP is niet toegepast op het knooppunt.
• More SWAP is nooit toegepast op een cluster met een uitbreiding. 

1. Controleer of SWAP-consistentie op alle knooppunten is.

Opdracht:

# doit free -m | grep Swap

Voorbeeld:

admin@ecsnode1:~> svc_exec 'free -m | grep Swap'
svc_exec v1.0.4 (svc_tools v2.8.0)                 Started 2022-11-30 22:15:56

Output from node: r1n1                                retval: 0
Swap:        8191         552         23

Output from node: r1n2                                retval: 0
Swap:        8191          2        8191

Output from node: r1n3                                retval: 0
Swap:        16383          4      16379

Output from node: r1n4                                retval: 0
Swap:        16383          0      16383

Output from node: r1n5                                retval: 0
Swap:        16383          0      16383

Output from node: r1n6                                retval: 0
Swap:        16383          3      16380

Output from node: r1n7                                retval: 0
Swap:        16383          4      16379

Output from node: r1n8                                retval: 0
Swap:        16383        699      15684

2. Controleer of /etc/fstab is bijgewerkt om 8 GB extra SWAP op het knooppunt te gebruiken en of de native SWAP-partitie-vermelding bestaat.

Opdracht:

# svc_exec 'grep swap /etc/fstab'

Voorbeeld:

admin@ecsnode1:~> svc_exec 'grep swap /etc/fstab'
svc_exec v1.0.4 (svc_tools v2.8.0)                 Started 2022-11-30 22:19:21

Output from node: r1n1                                retval: 0
LABEL=SWAP swap swap defaults 0 0                     <-- missing extended swap partition

Output from node: r1n2                                retval: 0
/swapfile     swap swap defaults 0 0                  <-- missing native swap partition

Output from node: r1n3                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

Output from node: r1n4                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

Output from node: r1n5                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

Output from node: r1n6                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

Output from node: r1n7                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

Output from node: r1n8                                retval: 0
LABEL=SWAP swap swap defaults 0 0
/swapfile     swap swap defaults 0 0

3. Controleer of het SWAP-bestand op alle knooppunten aanwezig is.

# svc_exec 'ls -lh /swapfile'

admin@ecsnode1:~> svc_exec 'ls -lh /swapfile'
svc_exec v1.0.4 (svc_tools v2.8.0)                 Started 2022-11-30 22:26:48

Output from node: r1n1                                retval: 0
ls: cannot access '/swapfile': No such file or directory

Output from node: r1n2                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n3                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n4                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n5                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n6                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n7                                retval: 0
-rw------- 1 root root 8.0G Feb 11  2022 /swapfile

Output from node: r1n8                                retval: 0
-rw------- 1 root root 8.0G Jul 26 02:03 /swapfile

BELANGRIJK: Er is een nieuwe functie uitgebracht in xDoctor 4-8.104.0 en hoger. Deze kennisbank (KB) is nu geautomatiseerd met xDoctor AutoPilot die de meeste problemen aanpakt zonder dat er ondersteuning nodig is.

Deze functie is eigen aan xDoctor 4-8.104.0 en hoger, voor syntaxis en gebruiksproblemen referentie ECS: ObjectScale: KB Automation Scripts uitvoeren (Auto Pilot).(mogelijk moet u zich aanmelden bij Dell Support) 
 

1. Voer de automatiseringsopdracht uit vanaf een primair knooppunt met xDoctor 4-8.104.0 en hoger.
   Notitie: --target-node, --target-rack and --target-vdc wordt ondersteund voor dit script.

# sudo xdoctor autopilot --kb 205933 --target-node <NAN IP>
# sudo xdoctor autopilot --kb 205933 --target-rack <Rack Name>
# sudo xdoctor autopilot --kb 205933 --target-vdc <VDC Name>

admin@ecsnode1:~> sudo xdoctor autopilot --kb 205933 --target-node 169.254.1.1
Checking for existing screen sessions...
Starting screen session 'autopilot_kb_205933_20250627_212503'...
Screen session 'autopilot_kb_205933_20250627_212503' started successfully.
Attaching to screen session 'autopilot_kb_205933_20250627_212503'...

2. Bekijk een overzicht van de ondernomen acties.

Voorbeeld:

TASK [Summary for SWAP and fstab issues addressed] *********************************************************************************************************************************************
ok: [169.254.1.7] => {
    "msg": [
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************",
        " An 8GB swap file was created and configured as /swapfile with swap enabled. ",
        " fstab was updated with entries for /swapfile, and a backup prior to the change was created in: /etc/fstab.28734.2024-08-28@19:44:38~. ",
        " No duplicate entries were found in fstab. ",
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************"
    ]
}

4. Bevestig dat u de MOTD wilt bijwerken met de swapgegevens en de aangebrachte wijzigingen.
   Notitie: Als uw huidige MOTD het KB-nummer of het woord /swapfile bevat, wordt de MOTD niet bijgewerkt.

Opdracht:

# yes or no

Voorbeeld:

The next steps are to detect keywords in the MOTD content and update the MOTD with custom content for the KB specifics. IMPORTANT! You will need customer permission to do this action for the KB. Would you like to proceed with the steps by typing 'Yes' or 'Y', or skip the MOTD update actions by typing 'No' or 'N':
: y

5. Bekijk het MOTD-wijzigingsoverzicht voor het toevoegen van nieuwe MOTD-inhoud:

Voorbeeld:

TASK [MOTD summary] ****************************************************************************************************************************************************************************
ok: [169.254.1.7] => {
    "msg": [
        "************************************************************************************************************************************************",
        "New MOTD content:",
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************",
        [
            "",
"==============================================================================================================================================",
            "2024-08-28 | SR#84955203 | KB 186358 has been applied to this system, adding an 8GB swap file to /swapfile. Please reapply if a node has been reimaged.",
            "=============================================================================================================================================="
        ],
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************"
    ]
}