Debian 8.3 friert immer wieder ein.

Guten Tag

Ich habe seit 2 Wochen das Problem dass mein Observium immer wieder downgeht.

Erstmal ein paar Daten

Debian 8.3 alle Pakete und Disti Aktuell.

Supermicro 5015
Intel Atom Quadcore 1.6 GHz
4GB RAM
2x Gig. Ethernet
1x usb 2.0 100MB Ethernet
2x Samsung 256 GB SSD im Raid 1
1x San Disk Cruzer Nano Fit als Bootloader Volume
Kein Swap!
1x ISCSI für Backup via Rsync


Load Average

Nach dem Start
0.43 0.64 0.56

Im Betrieb

0.82 0.90 0.70

dmesg log (Auszug)

[ 1.197084] uhci_hcd 0000:00:1a.2: new USB bus registered, assigned bus number 3
[ 1.197097] uhci_hcd 0000:00:1a.2: detected 2 ports
[ 1.197158] uhci_hcd 0000:00:1a.2: irq 19, io base 0x0000c800
[ 1.197362] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.197370] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.197375] usb usb3: Product: UHCI Host Controller
[ 1.197380] usb usb3: Manufacturer: Linux 3.16.0-4-amd64 uhci_hcd
[ 1.197385] usb usb3: SerialNumber: 0000:00:1a.2
[ 1.197861] hub 3-0:1.0: USB hub found
[ 1.197885] hub 3-0:1.0: 2 ports detected
[ 1.198377] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[ 1.198396] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 4
[ 1.198410] uhci_hcd 0000:00:1d.0: detected 2 ports
[ 1.198463] uhci_hcd 0000:00:1d.0: irq 23, io base 0x0000c480
[ 1.198630] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.198637] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.198642] usb usb4: Product: UHCI Host Controller
[ 1.198647] usb usb4: Manufacturers
[ 11.429065] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[ 11.429412] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 11.705037] md: md0: resync done.
[ 11.721574] RAID1 conf printout:
[ 11.721586] --- wd:2 rd:2
[ 11.721593] disk 0, wo:0, o:1, dev:sda1
[ 11.721599] disk 1, wo:0, o:1, dev:sdb1
[ 11.993047] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[ 11.993368] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 15.472395] scsi7 : iSCSI Initiator over TCP/IP
[ 15.770817] scsi 7:0:0:0: Direct-Access FreeBSD iSCSI Disk 0123 PQ: 0 ANSI: 6
[ 15.772410] sd 7:0:0:0: Attached scsi generic sg3 type 0
[ 15.773319] sd 7:0:0:0: [sdd] 524288000 512-byte logical blocks: (268 GB/250 GiB)
[ 15.773327] sd 7:0:0:0: [sdd] 131072-byte physical blocks
[ 15.775267] sd 7:0:0:0: [sdd] Write Protect is off
[ 15.775284] sd 7:0:0:0: [sdd] Mode Sense: 73 00 10 08
[ 15.776188] sd 7:0:0:0: [sdd] Write cache: enabled, read cache: enabled, supports DPO and FUA
[ 15.808203] systemd-journald[207]: Received request to flush runtime journal from PID 1
[ 15.817045] sdd: unknown partition table
[ 15.822316] sd 7:0:0:0: [sdd] Attached SCSI disk
[ 19.757659] EXT4-fs (sdd): recovery complete
[ 19.767645] EXT4-fs (sdd): mounted filesystem with ordered data mode. Opts: (null)
[ 660.350033] perf interrupt took too long (2546 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 1272.992323] perf interrupt took too long (5014 > 5000), lowering kernel.perf_event_max_sample_rate to 25000

Crontab

1. m h dom mon dow user command

17 * * * * root cd / && run-parts --report /etc/cron.hourly
#
30 * * * * root rsync -a -v --exclude-from /home/observium/backup.txt / /mnt/

33 */6 * * * root /opt/observium/discovery.php -h all >> /dev/null 2>&1
*/5 * * * * root /opt/observium/discovery.php -h new >> /dev/null 2>&1
*/5 * * * * root /opt/observium/poller-wrapper.py 5 >> /dev/null 2>&1

Das Observium lief bereits bei mir mit derselben Anzahl an Hosts auf einem Raspberry Pi 2 ohne Probleme. Hat von euch jemand ein Ähnliches Problem oder gar dasselbe Setup ?

Um den Server wieder in Gang zu kriegen hilft dann nur noch ein Hard Reset