ECS: xDoctor RAP137 Total swap memory inconsistent across the ECS rack

Summary: La memoria swap totale non è coerente nel rack ECS.

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Symptoms

xDoctor segnala:

------------------------------------------------------------
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

Cause

Dopo il riavvio di un nodo, la configurazione SWAP non è stata salvata in /etc/fstab.
La partizione SWAP nativa non è stata caricata all'avvio.
È stata ricreata l'immagine del nodo senza applicare la SWAP al nodo.
Inoltre, la SWAP non è mai stata applicata a un cluster con un'espansione.

Verificare che la SWAP sia coerente su tutti i nodi.

Nota: l'output riportato di seguito mostra il rack 1 nodo 1 con solo 8G nella SWAP senza corrispondenza con il cluster.

Comando:

# doit free -m | grep Swap

Esempio:

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

Verificare che /etc/fstab sia aggiornato per utilizzare ulteriori 8 GB di SWAP sul nodo e se esiste la voce della partizione SWAP nativa.

Comando:

# svc_exec 'grep swap /etc/fstab'

Esempio:

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

Verificare se il file SWAP è presente su tutti i nodi.

Comando:

# svc_exec 'ls -lh /swapfile'

Esempio:

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

Resolution

IMPORTANTE. È stata rilasciata una nuova funzionalità in xDoctor 4-8.104.0 e versioni successive. Questa knowledge base (KB) è ora automatizzata con xDoctor AutoPilot e risolve la maggior parte dei problemi senza la necessità di coinvolgere l'assistenza.

Questa funzione è nativa per xDoctor 4-8.104.0 e versioni successive; per problemi di sintassi e utilizzo, fare riferimento a ECS: ObjectScale: Come eseguire gli script di automazione della KB (pilota automatico).(potrebbe essere necessario effettuare l'accesso al supporto Dell)

Eseguire il comando di automazione da un nodo primario con xDoctor 4-8.104.0 e versioni successive.
Nota: --target-node, --target-rack and --target-vdc è supportato per questo script.

Comando:

# 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>

Esempio:

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'...

Esaminare un riepilogo delle azioni intraprese.

Esempio:

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. ",
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************"
    ]
}

Confermare l'aggiornamento di MOTD con i dettagli dello swap e le modifiche applicate.
Nota: se il file MOTD corrente include il numero della KB o la parola /swapfile, non viene aggiornato.

Comando:

# yes or no

Esempio:

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

Rivedere il riepilogo delle modifiche del file MOTD per l'aggiunta di nuovi contenuti MOTD:

Esempio:

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.",
            "=============================================================================================================================================="
        ],
        "************************************************************************************************************************************************",
        "************************************************************************************************************************************************"
    ]
}

Affected Products

ECS Appliance

Article Number: 000205933

Article Type: Solution

Last Modified: 24 Jul 2025

Version: 8

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ECS: xDoctor RAP137 Total swap memory inconsistent across the ECS rack

Summary: La memoria swap totale non è coerente nel rack ECS.

Symptoms

Cause

Resolution

Affected Products

Article Properties

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Article Properties

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ECS: xDoctor RAP137 Total swap memory inconsistent across the ECS rack

Summary: La memoria swap totale non è coerente nel rack ECS.

Detailed Article

Symptoms

Cause

Resolution

Affected Products

Symptoms

Cause

Resolution

Affected Products

Article Properties

Find answers to your questions from other Dell users

Support Services

Article Properties

Find answers to your questions from other Dell users

Support Services