Redemarrer un serveur down

Bonjour
J’ai en autohebergement un Olimex A20. Fonctionne nickel. Mais une fois semaine, il est inaccessible c’est à dire que je n’arrive plus à m’y connecter (services ssh, mail, site…)
Je n’ai qu’un acces ssh et dans ce cas, le service étant down, je ne peux y accéder
J’ai fouillé les logs , rien vu de particulier
Je suis obligé de couper l’alimentation, il redémarre et c’est reparti (lais comme il a une batterie, je suis obligé de le démonter de la retirer…)

Je songe donc à mettre un script sur un cron pour qu’il se redémarre automatiquement en cas de non liaison avec l’extérieur

Un truc du style

#!/bin/sh

ping -c5 www.lemonde.fr

if [ $? -eq 0 ]; then
    echo "ok"
else
    reboot
fi

Vous en pensez quoi ? Est ce la bonne méthode ? Y a t il d’autres alternatives ?
Merci pour le partage d’expérience :wink:

Bojour,

tu as donc pu te connecter en console?

Que donne les paramètres réseaux?
le service SSh est-il toujours UP?
Par où passes-tu pour te connecter (routeur, box,etc…)?
en réseau local as-tu essayé de te connecter en ssh?

Le serveur est hébergé à la maison derrière une freebox (le reste fonctionne, un reboot de la freebox ne relance pas l’accès au serveur)
j’ai donc un accès physique
Une fois down, je n’ai aucun accès ssh ni via le nom de domaine, l’ipv6 ou lipv4 ni via l’ip interne.
Donc je ne peux absolument pas m’y connecter
Désolé mal exprimé

Je n’ai qu’un acces ssh et dans ce cas, le service étant down, je ne peux y accéder

C’est mon seul accès (ssh) à la gestion de ce serveur. Et là quand le serveur tombe, il est donc aussi down. Je ne peux n’y brancher ni écran ni clavier.

tu as donc pu te connecter en console?

Donc non :wink:

Le service ssh est down également (+ site + mail)
Je ne le vois même plus lors d’un scan du reseau local. Je n’ai pas d’autres solution que de le débrancher pour rebooter.
Une fois redémarrer, rien de concluant dans les logs. Ensuite c’est aléatoires (en général 1 fois tous les semaines / 10 jours). Le serveur est sous yunohost / debian stable à jour.
Il

Bonjour,

Tu es sûr que tu n’as pas une défaillance matérielle quelque part ?
Vérifies par acquis de conscience ta RAM et ton CPU, au minimum, avec des logiciels tels memtest, voire cpu stress…
Es-tu sûr de la santé réelle de ton|tes disques durs ? si oui, qu’est-ce qui te permet de te l’assurer ?!

Quand tu dis que tu ne peux y brancher ni écran, ni clavier ; veux-tu dire plutôt que même en branchant l’un ou l’autre, il n’y a pas de réponse système (surtout pour le clavier) !?

Parce que la périodicité de tes ennuis, fais quand même méchamment penser à un incident matériel répétitif.

salut
si ce n’est pas ce qui est au dessus, ca ressemble un peu aussi à une mise en veille totale.

Sur un serveur ? il faudrait avoir un serveur X pour ça, non ?!

Bonjour, je vais tester le disque et la RAM mais je ne pense pas que ça vienne de là , le serveur est neuf (acheté début janvier de cette année)
Est ce qu’une RAM pleine peut mettre KO le serveur (il a 1 go de RAM et un swap) ? Ensuite pas grand chose d’installé dessus …
merci de vos réponse
Et non pas de serveur X, pas de mise en veille :wink:

Peux tu nous donner un dmesg, et un grep des warning dans les logs (car parfois un simple warning peut etre une source d’information sur un probleme d’evènement.

Après il est possible que tes logs ne se « flushent pas », essaye de mettre ton journald.conf en Storage=persistent (par contre tu aura un message d’erreur au reboot ou au shutdown pour le demontage des partitions liées au /var/log à cause d’un bug dans systemd qui ne peux être corrigé qu’avec la version 243 de systemd ou ultérieure).

pour le memtest, je viens de penser à une chose : on le sélectionne au boot, mais je n’ai pas accès au serveur à ce moment là. Je ne sais m’y connecter qu’en ssh après son démarrage… j’ai pas de lcd à coller dessus pour le boot…

Alors le dmesg

dmesg 
    [    0.000000] Booting Linux on physical CPU 0x0
    [    0.000000] Linux version 5.10.23-olimex (root@runner-cpbkaozn-project-1-concurrent-0) (arm-linux-gnueabihf-gcc (Debian 8.3.0-2) 8.3.0, GNU ld (GNU Binutils for Debian) 2.31.1) #110018 SMP Wed Mar 17 11:01:34 UTC 2021
    [    0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d
    [    0.000000] CPU: div instructions available: patching division code
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] OF: fdt: Machine model: Olimex A20-OLinuXino-LIME2
    [    0.000000] Memory policy: Data cache writealloc
    [    0.000000] Reserved memory: created CMA memory pool at 0x4a000000, size 96 MiB
    [    0.000000] OF: reserved mem: initialized node default-pool, compatible id shared-dma-pool
    [    0.000000] Zone ranges:
    [    0.000000]   Normal   [mem 0x0000000040000000-0x000000006fffffff]
    [    0.000000]   HighMem  [mem 0x0000000070000000-0x000000007fffffff]
    [    0.000000] Movable zone start for each node
    [    0.000000] Early memory node ranges
    [    0.000000]   node   0: [mem 0x0000000040000000-0x000000007fffffff]
    [    0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x000000007fffffff]
    [    0.000000] On node 0 totalpages: 262144
    [    0.000000]   Normal zone: 1728 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 196608 pages, LIFO batch:63
    [    0.000000]   HighMem zone: 65536 pages, LIFO batch:15
    [    0.000000] psci: probing for conduit method from DT.
    [    0.000000] psci: Using PSCI v0.1 Function IDs from DT
    [    0.000000] percpu: Embedded 20 pages/cpu s50444 r8192 d23284 u81920
    [    0.000000] pcpu-alloc: s50444 r8192 d23284 u81920 alloc=20*4096
    [    0.000000] pcpu-alloc: [0] 0 [0] 1 
    [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 260416
    [    0.000000] Kernel command line: root=PARTUUID=b71fb137-01 rootwait console=ttyS0,115200 panic=10 loglevel=4 
    [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
    [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
    [    0.000000] allocated 1048576 bytes of page_ext
    [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
    [    0.000000] Memory: 914044K/1048576K available (10240K kernel code, 1208K rwdata, 2400K rodata, 1024K init, 300K bss, 36228K reserved, 98304K cma-reserved, 262144K highmem)
    [    0.000000] random: get_random_u32 called from __kmem_cache_create+0x30/0x3d8 with crng_init=0
    [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
    [    0.000000] ftrace: allocating 35253 entries in 69 pages
    [    0.000000] ftrace: allocated 69 pages with 3 groups
    [    0.000000] rcu: Hierarchical RCU implementation.
    [    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
    [    0.000000] 	Rude variant of Tasks RCU enabled.
    [    0.000000] 	Tracing variant of Tasks RCU enabled.
    [    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
    [    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
    [    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
    [    0.000000] GIC: Using split EOI/Deactivate mode
    [    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys).
    [    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
    [    0.000009] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
    [    0.000023] Switching to timer-based delay loop, resolution 41ns
    [    0.000669] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
    [    0.001080] clocksource: hstimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns
    [    0.001477] Console: colour dummy device 80x30
    [    0.001559] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=96000)
    [    0.001580] pid_max: default: 32768 minimum: 301
    [    0.001949] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
    [    0.001970] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
    [    0.003376] CPU: Testing write buffer coherency: ok
    [    0.003945] /cpus/cpu@0 missing clock-frequency property
    [    0.003991] /cpus/cpu@1 missing clock-frequency property
    [    0.004010] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
    [    0.005045] Setting up static identity map for 0x40100000 - 0x40100060
    [    0.005239] rcu: Hierarchical SRCU implementation.
    [    0.006147] smp: Bringing up secondary CPUs ...
    [    0.017229] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
    [    0.017453] smp: Brought up 1 node, 2 CPUs
    [    0.017471] SMP: Total of 2 processors activated (96.00 BogoMIPS).
    [    0.017479] CPU: All CPU(s) started in HYP mode.
    [    0.017484] CPU: Virtualization extensions available.
    [    0.018643] devtmpfs: initialized
    [    0.029585] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4
    [    0.029935] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
    [    0.029967] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
    [    0.034568] pinctrl core: initialized pinctrl subsystem
    [    0.036258] NET: Registered protocol family 16
    [    0.038107] DMA: preallocated 256 KiB pool for atomic coherent allocations
    [    0.038999] audit: initializing netlink subsys (disabled)
    [    0.039409] audit: type=2000 audit(0.028:1): state=initialized audit_enabled=0 res=1
    [    0.040157] thermal_sys: Registered thermal governor 'fair_share'
    [    0.040171] thermal_sys: Registered thermal governor 'bang_bang'
    [    0.040179] thermal_sys: Registered thermal governor 'step_wise'
    [    0.040584] cpuidle: using governor ladder
    [    0.040622] cpuidle: using governor menu
    [    0.040926] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
    [    0.040937] hw-breakpoint: maximum watchpoint size is 8 bytes.
    [    0.085301] iommu: Default domain type: Translated 
    [    0.085934] SCSI subsystem initialized
    [    0.086323] libata version 3.00 loaded.
    [    0.086646] usbcore: registered new interface driver usbfs
    [    0.086709] usbcore: registered new interface driver hub
    [    0.086769] usbcore: registered new device driver usb
    [    0.087209] pps_core: LinuxPPS API ver. 1 registered
    [    0.087220] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
    [    0.087244] PTP clock support registered
    [    0.088138] Advanced Linux Sound Architecture Driver Initialized.
    [    0.089668] clocksource: Switched to clocksource arch_sys_counter
    [    0.149758] VFS: Disk quotas dquot_6.6.0
    [    0.149916] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.161344] NET: Registered protocol family 2
    [    0.162584] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
    [    0.162669] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
    [    0.162751] TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear)
    [    0.162879] TCP: Hash tables configured (established 8192 bind 8192)
    [    0.163042] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
    [    0.163116] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
    [    0.163449] NET: Registered protocol family 1
    [    0.164095] Trying to unpack rootfs image as initramfs...
    [    0.817109] Freeing initrd memory: 8812K
    [    0.817622] hw perfevents: no interrupt-affinity property for /pmu, guessing.
    [    0.818277] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
    [    0.820077] Initialise system trusted keyrings
    [    0.820521] workingset: timestamp_bits=14 max_order=18 bucket_order=4
    [    0.827088] zbud: loaded
    [    0.949173] Key type asymmetric registered
    [    0.949197] Asymmetric key parser 'x509' registered
    [    0.949290] bounce: pool size: 64 pages
    [    0.949371] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
    [    0.949704] io scheduler mq-deadline registered
    [    0.949719] io scheduler kyber registered
    [    0.950086] io scheduler bfq registered
    [    0.951758] sun4i-usb-phy 1c13400.phy: Couldn't request ID GPIO
    [    0.956297] sun4i-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
    [    1.036487] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
    [    1.039329] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pb not found, using dummy regulator
    [    1.040637] printk: console [ttyS0] disabled
    [    1.040768] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 58, base_baud = 1500000) is a 16550A
    [    1.057610] printk: console [ttyS0] enabled
    [    1.058580] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pg not found, using dummy regulator
    [    1.059876] 1c28c00.serial: ttyS1 at MMIO 0x1c28c00 (irq = 59, base_baud = 1500000) is a 16550A
    [    1.061615] 1c29000.serial: ttyS2 at MMIO 0x1c29000 (irq = 60, base_baud = 1500000) is a 16550A
    [    1.062597] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pi not found, using dummy regulator
    [    1.063756] 1c29400.serial: ttyS3 at MMIO 0x1c29400 (irq = 61, base_baud = 1500000) is a 16550A
    [    1.065433] 1c29800.serial: ttyS4 at MMIO 0x1c29800 (irq = 62, base_baud = 1500000) is a 16550A
    [    1.067241] 1c29c00.serial: ttyS5 at MMIO 0x1c29c00 (irq = 63, base_baud = 1500000) is a 16550A
    [    1.068616] STM32 USART driver initialized
    [    1.080036] brd: module loaded
    [    1.090264] loop: module loaded
    [    1.091758] ahci-sunxi 1c18000.sata: supply ahci not found, using dummy regulator
    [    1.092043] ahci-sunxi 1c18000.sata: supply phy not found, using dummy regulator
    [    1.094949] spi-nor spi0.0: w25q128 (16384 Kbytes)
    [    1.100262] libphy: Fixed MDIO Bus: probed
    [    1.101521] sun7i-dwmac 1c50000.ethernet: IRQ eth_wake_irq not found
    [    1.101540] sun7i-dwmac 1c50000.ethernet: IRQ eth_lpi not found
    [    1.101915] sun7i-dwmac 1c50000.ethernet: PTP uses main clock
    [    1.101935] sun7i-dwmac 1c50000.ethernet: no reset control found
    [    1.101982] sun7i-dwmac 1c50000.ethernet: no regulator found
    [    1.102418] sun7i-dwmac 1c50000.ethernet: Version ID not available
    [    1.102442] sun7i-dwmac 1c50000.ethernet: 	DWMAC1000
    [    1.102453] sun7i-dwmac 1c50000.ethernet: DMA HW capability register supported
    [    1.102463] sun7i-dwmac 1c50000.ethernet: Normal descriptors
    [    1.102471] sun7i-dwmac 1c50000.ethernet: Ring mode enabled
    [    1.103164] libphy: stmmac: probed
    [    1.129285] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
    [    1.129306] ehci-platform: EHCI generic platform driver
    [    1.130088] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
    [    1.130142] ohci-platform: OHCI generic platform driver
    [    1.131305] usbcore: registered new interface driver usb-storage
    [    1.133189] sunxi-rtc 1c20d00.rtc: registered as rtc0
    [    1.133268] sunxi-rtc 1c20d00.rtc: setting system clock to 2021-03-20T10:34:43 UTC (1616236483)
    [    1.133534] i2c /dev entries driver
    [    1.135276] axp20x-i2c 0-0034: AXP20x variant AXP209 found
    [    1.143266] input: axp20x-pek as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-0034/axp20x-pek/input/input0
    [    1.152601] vdd-rtc: supplied by regulator-dummy
    [    1.153933] avcc: supplied by regulator-dummy
    [    1.154536] vddio-csi0: Bringing 2800000uV into 3300000-3300000uV
    [    1.156149] vddio-csi0: supplied by regulator-dummy
    [    1.156453] vddio-csi1: supplied by regulator-dummy
    [    1.157209] ldo5: supplied by regulator-dummy
    [    1.158014] vdd-cpu: supplied by regulator-dummy
    [    1.158814] vdd-int-dll: supplied by regulator-dummy
    [    1.160423] axp20x-i2c 0-0034: AXP20X driver loaded
    [    1.166240] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
    [    1.167125] sdhci: Secure Digital Host Controller Interface driver
    [    1.167135] sdhci: Copyright(c) Pierre Ossman
    [    1.167141] Synopsys Designware Multimedia Card Interface Driver
    [    1.168077] sdhci-pltfm: SDHCI platform and OF driver helper
    [    1.169593] sun4i-pinctrl 1c20800.pinctrl: supply vcc-ph not found, using dummy regulator
    [    1.171232] sunxi-mmc 1c0f000.mmc: Got CD GPIO
    [    1.171649] ledtrig-cpu: registered to indicate activity on CPUs
    [    1.171792] hid: raw HID events driver (C) Jiri Kosina
    [    1.171981] usbcore: registered new interface driver usbhid
    [    1.171992] usbhid: USB HID core driver
    [    1.175391] Initializing XFRM netlink socket
    [    1.176182] NET: Registered protocol family 10
    [    1.194346] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
    [    1.236592] Segment Routing with IPv6
    [    1.236745] NET: Registered protocol family 17
    [    1.236795] NET: Registered protocol family 15
    [    1.237028] 8021q: 802.1Q VLAN Support v1.8
    [    1.237123] Key type dns_resolver registered
    [    1.237270] Registering SWP/SWPB emulation handler
    [    1.237855] registered taskstats version 1
    [    1.237875] Loading compiled-in X.509 certificates
    [    1.238022] zswap: loaded using pool lzo/zbud
    [    1.239018] Key type ._fscrypt registered
    [    1.239034] Key type .fscrypt registered
    [    1.239040] Key type fscrypt-provisioning registered
    [    1.268149] Key type encrypted registered
    [    1.289959] ahci-sunxi 1c18000.sata: supply ahci not found, using dummy regulator
    [    1.290223] ahci-sunxi 1c18000.sata: supply phy not found, using dummy regulator
    [    1.345712] ahci-sunxi 1c18000.sata: controller can't do PMP, turning off CAP_PMP
    [    1.345780] ahci-sunxi 1c18000.sata: SSS flag set, parallel bus scan disabled
    [    1.345818] ahci-sunxi 1c18000.sata: AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl platform mode
    [    1.345835] ahci-sunxi 1c18000.sata: flags: ncq sntf stag pm led clo only pio slum part ccc 
    [    1.347266] scsi host0: ahci-sunxi
    [    1.347757] ata1: SATA max UDMA/133 mmio [mem 0x01c18000-0x01c18fff] port 0x100 irq 47
    [    1.348897] ehci-platform 1c14000.usb: EHCI Host Controller
    [    1.348967] ehci-platform 1c14000.usb: new USB bus registered, assigned bus number 1
    [    1.349471] ehci-platform 1c14000.usb: irq 42, io mem 0x01c14000
    [    1.361706] ehci-platform 1c14000.usb: USB 2.0 started, EHCI 1.00
    [    1.362038] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
    [    1.362054] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    1.362063] usb usb1: Product: EHCI Host Controller
    [    1.362071] usb usb1: Manufacturer: Linux 5.10.23-olimex ehci_hcd
    [    1.362080] usb usb1: SerialNumber: 1c14000.usb
    [    1.363064] hub 1-0:1.0: USB hub found
    [    1.363140] hub 1-0:1.0: 1 port detected
    [    1.364683] ehci-platform 1c1c000.usb: EHCI Host Controller
    [    1.364724] ehci-platform 1c1c000.usb: new USB bus registered, assigned bus number 2
    [    1.365130] ehci-platform 1c1c000.usb: irq 48, io mem 0x01c1c000
    [    1.377696] ehci-platform 1c1c000.usb: USB 2.0 started, EHCI 1.00
    [    1.378012] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
    [    1.378027] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    1.378037] usb usb2: Product: EHCI Host Controller
    [    1.378046] usb usb2: Manufacturer: Linux 5.10.23-olimex ehci_hcd
    [    1.378054] usb usb2: SerialNumber: 1c1c000.usb
    [    1.378916] hub 2-0:1.0: USB hub found
    [    1.379019] hub 2-0:1.0: 1 port detected
    [    1.380540] ohci-platform 1c14400.usb: Generic Platform OHCI controller
    [    1.380581] ohci-platform 1c14400.usb: new USB bus registered, assigned bus number 3
    [    1.380953] ohci-platform 1c14400.usb: irq 43, io mem 0x01c14400
    [    1.441969] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.10
    [    1.441988] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    1.441998] usb usb3: Product: Generic Platform OHCI controller
    [    1.442007] usb usb3: Manufacturer: Linux 5.10.23-olimex ohci_hcd
    [    1.442015] usb usb3: SerialNumber: 1c14400.usb
    [    1.442884] hub 3-0:1.0: USB hub found
    [    1.442961] hub 3-0:1.0: 1 port detected
    [    1.444460] ohci-platform 1c1c400.usb: Generic Platform OHCI controller
    [    1.444503] ohci-platform 1c1c400.usb: new USB bus registered, assigned bus number 4
    [    1.444965] ohci-platform 1c1c400.usb: irq 49, io mem 0x01c1c400
    [    1.505968] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.10
    [    1.505990] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    1.506000] usb usb4: Product: Generic Platform OHCI controller
    [    1.506009] usb usb4: Manufacturer: Linux 5.10.23-olimex ohci_hcd
    [    1.506018] usb usb4: SerialNumber: 1c1c400.usb
    [    1.506891] hub 4-0:1.0: USB hub found
    [    1.506971] hub 4-0:1.0: 1 port detected
    [    1.508566] usb_phy_generic usb_phy_generic.0.auto: supply vcc not found, using dummy regulator
    [    1.510015] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
    [    1.510057] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 5
    [    1.510464] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
    [    1.510480] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    1.510489] usb usb5: Product: MUSB HDRC host driver
    [    1.510498] usb usb5: Manufacturer: Linux 5.10.23-olimex musb-hcd
    [    1.510507] usb usb5: SerialNumber: musb-hdrc.1.auto
    [    1.511360] hub 5-0:1.0: USB hub found
    [    1.511436] hub 5-0:1.0: 1 port detected
    [    1.515024] ALSA device list:
    [    1.515044]   No soundcards found.
    [    1.664190] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
    [    1.664426] ata1.00: ATA-11: SPCC Solid State Disk, SBFM61.3, max UDMA/133
    [    1.664441] ata1.00: 250069680 sectors, multi 16: LBA48 NCQ (depth 32)
    [    1.664628] ata1.00: configured for UDMA/133
    [    1.665331] scsi 0:0:0:0: Direct-Access     ATA      SPCC Solid State 61.3 PQ: 0 ANSI: 5
    [    1.666582] sd 0:0:0:0: Attached scsi generic sg0 type 0
    [    1.667012] sd 0:0:0:0: [sda] 250069680 512-byte logical blocks: (128 GB/119 GiB)
    [    1.667112] sd 0:0:0:0: [sda] Write Protect is off
    [    1.667127] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    [    1.667247] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    [    1.668794]  sda: sda1
    [    1.670667] sd 0:0:0:0: [sda] Attached SCSI disk
    [    1.674802] Freeing unused kernel memory: 1024K
    [    1.681940] Run /init as init process
    [    1.681950]   with arguments:
    [    1.681956]     /init
    [    1.681961]   with environment:
    [    1.681966]     HOME=/
    [    1.681971]     TERM=linux
    [    2.977184] axp20x-gpio axp20x-gpio: DMA mask not set
    [    2.978239] random: fast init done
    [    2.980696] axp20x-gpio axp20x-gpio: AXP209 pinctrl and GPIO driver loaded
    [    3.799986] process '/usr/bin/fstype' started with executable stack
    [    5.798338] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
    [    6.212598] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
    [    6.213390] systemd[1]: Detected architecture arm.
    [    6.264261] systemd[1]: Set hostname to <crust.ovh>.
    [    7.195584] systemd[1]: /lib/systemd/system/fail2ban.service:12: PIDFile= references path below legacy directory /var/run/, updating /var/run/fail2ban/fail2ban.pid → /run/fail2ban/fail2ban.pid; please update the unit file accordingly.
    [    7.198052] systemd[1]: /lib/systemd/system/dovecot.service:9: PIDFile= references path below legacy directory /var/run/, updating /var/run/dovecot/master.pid → /run/dovecot/master.pid; please update the unit file accordingly.
    [    7.286184] random: systemd: uninitialized urandom read (16 bytes read)
    [    7.307519] random: systemd: uninitialized urandom read (16 bytes read)
    [    7.308141] systemd[1]: Listening on initctl Compatibility Named Pipe.
    [    7.325985] random: systemd: uninitialized urandom read (16 bytes read)
    [    7.328915] systemd[1]: Listening on Syslog Socket.
    [    7.347327] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
    [    7.366540] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
    [    7.387020] systemd[1]: Listening on Journal Socket (/dev/log).
    [    7.796576] g_serial gadget: Gadget Serial v2.4
    [    7.796603] g_serial gadget: g_serial ready
    [    8.117741] EXT4-fs (sda1): re-mounted. Opts: commit=600,errors=remount-ro
    [    8.338094] Adding 2097148k swap on /swapfile.  Priority:-2 extents:3 across:5046268k SSFS
    [    9.038189] systemd-journald[207]: Received request to flush runtime journal from PID 1
    [   10.331059] pwm-backlight backlight: supply power not found, using dummy regulator
    [   10.356210] pwm-backlight backlight: supply power not found, using dummy regulator
    [   10.929905] pwm-backlight backlight: supply power not found, using dummy regulator
    [   10.942337] mc: Linux media interface: v0.10
    [   10.978005] sun4i-ss 1c15000.crypto-engine: Die ID 0
    [   11.075276] videodev: Linux video capture interface: v2.00
    [   11.114752] pwm-backlight backlight: supply power not found, using dummy regulator
    [   11.257334] sunxi_cedrus: module is from the staging directory, the quality is unknown, you have been warned.
    [   11.274707] cedrus 1c0e000.video-codec: Device registered as /dev/video0
    [   11.370099] pwm-backlight backlight: supply power not found, using dummy regulator
    [   11.393358] debugfs: Directory '1c22c00.codec' with parent 'sun4i-codec' already present!
    [   11.541398] CAN device driver interface
    [   11.580576] sun4i_can 1c2bc00.can: device registered (base=(ptrval), irq=67)
    [   11.620819] lima 1c40000.gpu: gp - mali400 version major 1 minor 1
    [   11.620913] lima 1c40000.gpu: pp0 - mali400 version major 1 minor 1
    [   11.620982] lima 1c40000.gpu: pp1 - mali400 version major 1 minor 1
    [   11.621052] lima 1c40000.gpu: l2 cache 64K, 4-way, 64byte cache line, 64bit external bus
    [   11.651725] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pd not found, using dummy regulator
    [   11.652690] lima 1c40000.gpu: bus rate = 300000000
    [   11.652714] lima 1c40000.gpu: mod rate = 384000000
    [   11.653970] [drm] Initialized lima 1.1.0 20191231 for 1c40000.gpu on minor 0
    [   11.668127] lcd_olinuxino 2-0050: error reading from device at 00
    [   11.797024] at24 1-0050: supply vcc not found, using dummy regulator
    [   11.832805] at24 1-0050: 2048 byte 24c16 EEPROM, writable, 16 bytes/write
    [   11.950857] axp20x-battery-power-supply axp20x-battery-power-supply: DMA mask not set
    [   11.957790] axp20x-adc axp20x-adc: DMA mask not set
    [   11.973092] axp20x-ac-power-supply axp20x-ac-power-supply: DMA mask not set
    [   16.167276] random: crng init done
    [   16.167311] random: 7 urandom warning(s) missed due to ratelimiting
    [   22.220197] sun7i-dwmac 1c50000.ethernet eth0: PHY [stmmac-0:01] driver [Micrel KSZ9031 Gigabit PHY] (irq=POLL)
    [   22.229798] sun7i-dwmac 1c50000.ethernet eth0: No Safety Features support found
    [   22.229829] sun7i-dwmac 1c50000.ethernet eth0: RX IPC Checksum Offload disabled
    [   22.229845] sun7i-dwmac 1c50000.ethernet eth0: No MAC Management Counters available
    [   22.229857] sun7i-dwmac 1c50000.ethernet eth0: PTP not supported by HW
    [   22.230925] sun7i-dwmac 1c50000.ethernet eth0: configuring for phy/rgmii link mode
    [   25.322834] sun7i-dwmac 1c50000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
    [   25.322909] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
    [   31.721504] vcc3v0: disabling
    [   31.721537] vcc5v0: disabling
    [   31.721557] usb0-vbus: disabling
    [22760.849071] hrtimer: interrupt took 265803 ns
    [103225.724734] Adding 1048572k swap on /swap_flarum.  Priority:-3 extents:3 across:1130496k SSFS

Et le grep / warning dans les logs

 grep -i "Warn" /var/log/*.log | sort | uniq -c | sort -n 
      1 /var/log/daemon.log:Mar 21 10:07:45 crust navidrome[507]: time="2021-03-21T10:07:45Z" level=warning msg="HTTP: GET http://crust.ovh/zik/app/api/album?_end=18&_order=DESC&_sort=created_at&_start=0" elapsedTime=3.8ms httpStatus=401 remoteAddr=77.141.98.224 requestId=crust.ovh/MxM7ZHVQrm-000203 responseSize=29
      1 /var/log/daemon.log:Mar 21 10:07:45 crust navidrome[507]: time="2021-03-21T10:07:45Z" level=warning msg="HTTP: GET http://crust.ovh/zik/app/api/keepalive/eventSource" elapsedTime=13.9ms httpStatus=401 remoteAddr=77.141.98.224 requestId=crust.ovh/MxM7ZHVQrm-000201 responseSize=29
      1 /var/log/daemon.log:Mar 21 11:05:10 crust dnsmasq[10649]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 11:05:11 crust dnsmasq[10694]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 14:47:51 crust dnsmasq[12610]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 14:47:52 crust dnsmasq[12655]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 14:52:33 crust mysqld[736]: 2021-03-21 14:52:33 1009 [Warning] Access denied for user 'root'@'localhost' (using password: YES)
      1 /var/log/daemon.log:Mar 21 14:52:47 crust mysqld[736]: 2021-03-21 14:52:47 1012 [Warning] Access denied for user 'admin'@'localhost' (using password: YES)
      1 /var/log/daemon.log:Mar 21 15:07:20 crust nginx[19218]: nginx: [warn] conflicting server name "pedagogies-en-avesnois.fr" on 0.0.0.0:80, ignored
      1 /var/log/daemon.log:Mar 21 15:07:20 crust nginx[19218]: nginx: [warn] conflicting server name "pedagogies-en-avesnois.fr" on [::]:80, ignored
      1 /var/log/daemon.log:Mar 21 15:38:43 crust dnsmasq[32536]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 15:38:44 crust dnsmasq[32581]: /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf
      1 /var/log/daemon.log:Mar 21 15:59:46 crust navidrome[507]: time="2021-03-21T15:59:46Z" level=warning msg="HTTP: GET http://crust.ovh/zik/app/index.htm" elapsedTime="175.758µs" httpStatus=404 remoteAddr="2a01:e0a:82d:d0c0:829e:b648:a2c5:41c0" requestId=crust.ovh/MxM7ZHVQrm-000529 responseSize=19
      1 /var/log/daemon.log:Mar 22 00:00:01 crust mysqld[736]: 2021-03-22  0:00:01 1958 [Warning] Access denied for user 'root'@'localhost' (using password: NO)
      1 /var/log/mail.log:Mar 21 00:07:45 crust postfix/smtpd[6220]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 00:34:33 crust postfix/smtpd[6329]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 01:01:03 crust postfix/smtpd[6428]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 01:27:32 crust postfix/smtpd[6540]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 01:54:01 crust postfix/smtpd[6697]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 02:20:31 crust postfix/smtpd[6887]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 02:47:01 crust postfix/smtpd[7012]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 03:13:31 crust postfix/smtpd[7180]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 03:39:59 crust postfix/smtpd[7289]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 04:06:29 crust postfix/smtpd[7384]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 04:32:59 crust postfix/smtpd[7486]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 04:59:26 crust postfix/smtpd[7590]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 05:25:57 crust postfix/smtpd[7689]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 05:52:30 crust postfix/smtpd[7797]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 06:19:00 crust postfix/smtpd[7937]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 06:45:30 crust postfix/smtpd[8237]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 07:11:59 crust postfix/smtpd[8349]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 07:38:27 crust postfix/smtpd[8519]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 08:04:58 crust postfix/smtpd[8621]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 08:31:28 crust postfix/smtpd[8752]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 08:57:56 crust postfix/smtpd[8919]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 09:24:27 crust postfix/smtpd[9037]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 09:50:58 crust postfix/smtpd[9152]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 10:17:34 crust postfix/smtpd[9289]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 10:44:00 crust postfix/smtpd[9374]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 11:04:20 crust postfix/postfix-script[9890]: warning: symlink leaves directory: /etc/postfix/./makedefs.out
      1 /var/log/mail.log:Mar 21 11:04:21 crust dovecot: master: Warning: Killed with signal 15 (by pid=9946 uid=0 code=kill)
      1 /var/log/mail.log:Mar 21 11:05:06 crust postfix/postfix-script[10548]: warning: symlink leaves directory: /etc/postfix/./makedefs.out
      1 /var/log/mail.log:Mar 21 11:10:30 crust postfix/smtpd[10920]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 11:36:59 crust postfix/smtpd[11003]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 12:03:30 crust postfix/smtpd[11101]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 12:13:36 crust postfix/smtpd[11212]: warning: hostname internettl.org does not resolve to address 104.152.52.38
      1 /var/log/mail.log:Mar 21 12:13:36 crust postfix/smtpd[11212]: warning: TLS library problem: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:../ssl/statem/statem_srvr.c:1661:
      1 /var/log/mail.log:Mar 21 12:28:33 crust postfix/submission/smtpd[11254]: warning: hostname internettl.org does not resolve to address 104.152.52.38
      1 /var/log/mail.log:Mar 21 12:28:33 crust postfix/submission/smtpd[11254]: warning: TLS library problem: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:../ssl/statem/statem_srvr.c:1661:
      1 /var/log/mail.log:Mar 21 12:30:00 crust postfix/smtpd[11242]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 12:56:30 crust postfix/smtpd[11369]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 13:22:22 crust postfix/smtpd[11539]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 13:39:50 crust postfix/smtpd[11690]: warning: hostname security.criminalip.com does not resolve to address 89.248.168.112
      1 /var/log/mail.log:Mar 21 13:48:51 crust postfix/smtpd[11735]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 14:15:23 crust postfix/smtpd[11897]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 14:41:56 crust postfix/smtpd[12181]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 14:48:34 crust postfix/postfix-script[12865]: warning: symlink leaves directory: /etc/postfix/./makedefs.out
      1 /var/log/mail.log:Mar 21 14:48:35 crust dovecot: master: Warning: Killed with signal 15 (by pid=12920 uid=0 code=kill)
      1 /var/log/mail.log:Mar 21 14:48:36 crust dovecot: anvil: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
      1 /var/log/mail.log:Mar 21 14:48:36 crust dovecot: imap-login: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
      1 /var/log/mail.log:Mar 21 14:48:36 crust dovecot: log(9965): Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
      1 /var/log/mail.log:Mar 21 14:48:36 crust dovecot: log(9965): Warning: Shutting down logging for 'imap-login: ' with 1 clients
      1 /var/log/mail.log:Mar 21 14:48:36 crust dovecot: log(9965): Warning: Shutting down logging for 'imap: ' with 1 clients
      1 /var/log/mail.log:Mar 21 15:08:31 crust postfix/smtpd[19269]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 15:35:02 crust postfix/smtpd[30517]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 15:38:41 crust postfix/postfix-script[32454]: warning: symlink leaves directory: /etc/postfix/./makedefs.out
      1 /var/log/mail.log:Mar 21 16:01:35 crust postfix/smtpd[2004]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 16:28:05 crust postfix/smtpd[3415]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 16:54:34 crust postfix/smtpd[3941]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 17:21:04 crust postfix/smtpd[4521]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 17:47:34 crust postfix/smtpd[4995]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 18:14:02 crust postfix/smtpd[5208]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 18:16:28 crust postfix/submission/smtpd[5223]: warning: hostname zg-0226a-121.stretchoid.com does not resolve to address 192.241.219.204: Name or service not known
      1 /var/log/mail.log:Mar 21 18:40:30 crust postfix/smtpd[5367]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 19:06:56 crust postfix/smtpd[5716]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 19:33:21 crust postfix/smtpd[5920]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 19:59:45 crust postfix/smtpd[6045]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 20:26:09 crust postfix/smtpd[6160]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 20:52:33 crust postfix/smtpd[6682]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 21:18:59 crust postfix/smtpd[6819]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 21:45:23 crust postfix/smtpd[6924]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 22:11:47 crust postfix/smtpd[7038]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 22:38:10 crust postfix/smtpd[7113]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 23:04:33 crust postfix/smtpd[7226]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 23:30:56 crust postfix/smtpd[7361]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 21 23:57:32 crust postfix/smtpd[7475]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 00:24:14 crust postfix/smtpd[7696]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 00:50:55 crust postfix/smtpd[7824]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 01:17:26 crust postfix/smtpd[7946]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 01:43:54 crust postfix/smtpd[8054]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 02:10:23 crust postfix/smtpd[8115]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 02:36:55 crust postfix/smtpd[8256]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 03:03:25 crust postfix/smtpd[8396]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 03:29:54 crust postfix/smtpd[8850]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 03:56:28 crust postfix/smtpd[8976]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 04:23:00 crust postfix/smtpd[9132]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 04:49:31 crust postfix/smtpd[9260]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 05:16:02 crust postfix/smtpd[9370]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 05:42:32 crust postfix/smtpd[9487]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 06:09:00 crust postfix/smtpd[9547]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 13:07:12 crust postfix/smtpd[11591]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 13:34:09 crust postfix/smtpd[11711]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 14:01:06 crust postfix/smtpd[11829]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 14:27:53 crust postfix/smtpd[11965]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 14:54:37 crust postfix/smtpd[12073]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 15:07:42 crust postfix/smtpd[12113]: warning: hostname zg-0226a-44.stretchoid.com does not resolve to address 192.241.218.53: Name or service not known
      1 /var/log/mail.log:Mar 22 15:21:24 crust postfix/smtpd[12199]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 15:48:09 crust postfix/smtpd[12304]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/mail.log:Mar 22 16:14:55 crust postfix/smtpd[12424]: warning: hostname prefigure.einsteinsport.com does not resolve to address 185.36.81.98: Name or service not known
      1 /var/log/yunohost-installation_20201226_122427.log:WARNING: /etc/aliases exists, but does not have a root alias.
      2 /var/log/bootstrap.log:dpkg: warning: parsing file '/var/lib/dpkg/status' near line 24 package 'dpkg':
      2 /var/log/bootstrap.log:dpkg: warning: parsing file '/var/lib/dpkg/status' near line 51 package 'dpkg':
      2 /var/log/bootstrap.log:dpkg: warning: parsing file '/var/lib/dpkg/status' near line 5 package 'dpkg':
     55 /var/log/bootstrap.log:dpkg: warning: ignoring pre-dependency problem!

Quel est le matériel?
Quel modèle ton Olimex A20? car j’en vois pas mal qui ont un connecteur VGA et de l’USB donc la possibilité d’avoir un clavier et un écran pour avoir une console.

C’est un

Par contre pas de vga. Un hdmi mais je n’ai rien configuré pour l’activer donc pas actif. Je n’en voyais pas l’utilité mais si nécessaire, je peux éplucher la doc :wink:

Le disque semble en bonne santé

smartctl -a /dev/sda
smartctl 6.6 2017-11-05 r4594 [armv7l-linux-5.10.23-olimex] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     SPCC Solid State Disk
Serial Number:    115E07060CCD00047974
Firmware Version: SBFM61.3
User Capacity:    128,035,676,160 bytes [128 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Mon Mar 22 16:45:44 2021 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0)	The previous self-test routine completed
					without error or no self-test has ever 
					been run.
Total time to complete Offline 
data collection: 		(65535) seconds.
Offline data collection
capabilities: 			 (0x79) SMART execute Offline immediate.
					No Auto Offline data collection support.
					Suspend Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					Conveyance Self-test supported.
					Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
					power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   2) minutes.
Extended self-test routine
recommended polling time: 	 (  30) minutes.
Conveyance self-test routine
recommended polling time: 	 (   6) minutes.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   050    Pre-fail  Always       -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       2069
 12 Power_Cycle_Count       0x0012   100   100   000    Old_age   Always       -       15
168 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
170 Unknown_Attribute       0x0003   100   100   000    Pre-fail  Always       -       60
173 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       65539
192 Power-Off_Retract_Count 0x0012   100   100   000    Old_age   Always       -       14
194 Temperature_Celsius     0x0023   067   067   000    Pre-fail  Always       -       33 (Min/Max 33/33)
218 Unknown_Attribute       0x000b   100   100   050    Pre-fail  Always       -       0
231 Temperature_Celsius     0x0013   100   100   000    Pre-fail  Always       -       99
241 Total_LBAs_Written      0x0012   100   100   000    Old_age   Always       -       65

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      2069         -

SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

pour le test de mémoire vive, ça a l’air de passer aussi

   # memtester 200M 2
    memtester version 4.3.0 (32-bit)
    Copyright (C) 2001-2012 Charles Cazabon.
    Licensed under the GNU General Public License version 2 (only).

    pagesize is 4096
    pagesizemask is 0xfffff000
    want 200MB (209715200 bytes)
    got  200MB (209715200 bytes), trying mlock ...locked.
    Loop 1/2:
      Stuck Address       : ok         
      Random Value        : ok
      Compare XOR         : ok
      Compare SUB         : ok
      Compare MUL         : ok
      Compare DIV         : ok
      Compare OR          : ok
      Compare AND         : ok
      Sequential Increment: ok
      Solid Bits          : ok         
      Block Sequential    : ok         
      Checkerboard        : ok         
      Bit Spread          : ok         
      Bit Flip            : ok         
      Walking Ones        : ok         
      Walking Zeroes      : ok         
      8-bit Writes        : ok
      16-bit Writes       : ok

La seconde passe est en cours, je posterai si soucis

EDIT : seconde passe sans soucis

Et pour info

# free
              total        used        free      shared  buff/cache   available
Mem:        1022184      303372      308500       35204      410312      669532
Swap:       2097148       21748     2075400

Si jamais ça peut être utilise

Et si plus lisible

dmesg | egrep "warn|fail"
[    7.195584] systemd[1]: /lib/systemd/system/fail2ban.service:12: PIDFile= references path below legacy directory /var/run/, updating /var/run/fail2ban/fail2ban.pid → /run/fail2ban/fail2ban.pid; please update the unit file accordingly.
[   11.257334] sunxi_cedrus: module is from the staging directory, the quality is unknown, you have been warned.
[   16.167311] random: 7 urandom warning(s) missed due to ratelimiting

Bonjour.
Je ne connais pas les Olimex A20. Donc, ma solution pourra être une bêtise.
J’ai eu un souci du même ordre.
J’ai installé sur la même machine Proxmox et ai virtualisé mon serveur.
Plus jamais eu ce problème.
Et en cas de problème, on peut atteindre le serveur via Proxmox.
Si le problème persiste avec Proxmox, là, cela va se compliquer.

Il manque l’occupation des disques :

df -h

@Bruno1
Le disque est OK ; ), certes j’aurais dû le préciser

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            447M     0  447M   0% /dev
tmpfs           100M   59M   42M  59% /run
/dev/sda1       117G   26G   86G  23% /
tmpfs           500M     0  500M   0% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           500M     0  500M   0% /sys/fs/cgroup
tmpfs           100M     0  100M   0% /run/user/1007

@FredOrdeTre

Je ne connais pas du tout Proxmox. Le serveur ne devrait quand même pas se planter ainsi…
Je vais jeter un oeil quand même sur la doc :wink:

C’est pas un souci avec la carte réseau qui tombe genre renouvellement du bail DHCP

@Doudou67
Je peux vérifier cela comment ? Thx :wink:

Déjà voir si l’interface et en DHCP dans
/etc/network/interfaces
si oui en général ça plante quand tu fait un renew
dhclient -r -v nom de l’interface