auch ich habe ein Problemchen seit einigen Wochen, dass der ioBroker nach einer gewissen Laufzeit nicht mehr über Browser erreichbar ist.
Wenn ich xxx.xxx.xxx.xxx::8081 eingebe kommt als Fehlermeldung Seite ist nicht erreichbar, bzw wenn die Seite noch offen war, dann dreht sich der bunte Kreis ewig und nichts passiert. Das System läuft manchmal 1-2 Stunden bis das auftritt, manchmal auch mehrere Tage...
Ich betreibe Raspberries im Master Slave Mode. Der Master hat aktuell node.js v8.11.4 und npm v6.4.0. Alle Adapter sind auf aktuellem Stand. Der Pi hat ein original Netzteil, Fehler der Speicherkarte schliesse ich aus, die hatte ich vorgestern getauscht, Fehlerbild bleibt bestehen.

Syslog

Sep 20 06:33:14 ioBroker-RasPi systemd[1]: Starting Daily apt upgrade and clean activities...
Sep 20 06:33:17 ioBroker-RasPi systemd[1]: Started Daily apt upgrade and clean activities.
Sep 20 06:33:17 ioBroker-RasPi systemd[1]: apt-daily-upgrade.timer: Adding 41min 22.126040s random time.
Sep 20 06:33:17 ioBroker-RasPi systemd[1]: apt-daily-upgrade.timer: Adding 23min 12.296504s random time.
Sep 20 07:00:24 ioBroker-RasPi kernel: [39618.391324] kworker/u8:0 invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null),  order=2, oom_score_adj=0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391340] kworker/u8:0 cpuset=/ mems_allowed=0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391355] CPU: 2 PID: 12738 Comm: kworker/u8:0 Tainted: G         C      4.14.52-v7+ #1123
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391357] Hardware name: BCM2835
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391379] [<8010ffd8>] (unwind_backtrace) from [<8010c240>] (show_stack+0x20/0x24)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391388] [<8010c240>] (show_stack) from [<80785e84>] (dump_stack+0xd4/0x118)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391399] [<80785e84>] (dump_stack) from [<80223f94>] (dump_header+0xac/0x208)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391408] [<80223f94>] (dump_header) from [<802232fc>] (oom_kill_process+0x478/0x584)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391416] [<802232fc>] (oom_kill_process) from [<80223c5c>] (out_of_memory+0x124/0x334)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391426] [<80223c5c>] (out_of_memory) from [<80229718>] (__alloc_pages_nodemask+0x1060/0x11d8)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391435] [<80229718>] (__alloc_pages_nodemask) from [<802298b0>] (__get_free_pages+0x20/0x6c)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391444] [<802298b0>] (__get_free_pages) from [<80116f74>] (pgd_alloc+0x28/0x118)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391454] [<80116f74>] (pgd_alloc) from [<8011a46c>] (mm_init+0xe0/0x178)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391463] [<8011a46c>] (mm_init) from [<8011ab30>] (mm_alloc+0x5c/0x68)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391472] [<8011ab30>] (mm_alloc) from [<80292610>] (do_execveat_common+0x254/0x698)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391481] [<80292610>] (do_execveat_common) from [<80292a8c>] (do_execve+0x38/0x40)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391490] [<80292a8c>] (do_execve) from [<80133724>] (call_usermodehelper_exec_async+0x168/0x1c0)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391501] [<80133724>] (call_usermodehelper_exec_async) from [<8010810c>] (ret_from_fork+0x14/0x28)
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391504] Mem-Info:
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516] active_anon:216976 inactive_anon:2996 isolated_anon:0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516]  active_file:363 inactive_file:390 isolated_file:32
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516]  unevictable:0 dirty:0 writeback:0 unstable:0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516]  slab_reclaimable:1705 slab_unreclaimable:3127
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516]  mapped:2129 shmem:3060 pagetables:2454 bounce:0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391516]  free:6081 free_pcp:302 free_cma:1674
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391524] Node 0 active_anon:867904kB inactive_anon:11984kB active_file:1452kB inactive_file:1560kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:8516kB dirty:0kB writeback:0kB $
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391536] Normal free:24324kB min:16384kB low:20480kB high:24576kB active_anon:867904kB inactive_anon:11984kB active_file:1756kB inactive_file:1664kB unevictable:0kB writepending:0kB present:9$
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391538] lowmem_reserve[]: 0 0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391545] Normal: 276*4kB (UMEHC) 228*8kB (UMEHC) 151*16kB (UMEHC) 77*32kB (MEHC) 54*64kB (UMEHC) 23*128kB (UMEHC) 11*256kB (UC) 0*512kB 3*1024kB (UC) 2*2048kB (UC) 0*4096kB = 24192kB
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391590] 3892 total pagecache pages
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391593] 0 pages in swap cache
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391596] Swap cache stats: add 0, delete 0, find 0/0
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391599] Free swap  = 0kB
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391601] Total swap = 0kB
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391603] 242688 pages RAM
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391606] 0 pages HighMem/MovableOnly
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391608] 5325 pages reserved
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391610] 2048 pages cma reserved
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391613] [ pid ]   uid  tgid total_vm      rss nr_ptes nr_pmds swapents oom_score_adj name
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391631] [  101]     0   101     6731     1887      13       0        0             0 systemd-journal
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391638] [  127]     0   127     3584      169       8       0        0         -1000 systemd-udevd
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391644] [  258]   100   258     4320      110      11       0        0             0 systemd-timesyn
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391650] [  299]     0   299     1845      106       7       0        0             0 systemd-logind
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391656] [  301]   108   301     1601       87       8       0        0             0 avahi-daemon
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391662] [  302]     0   302     5937      194      10       0        0             0 rsyslogd
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391668] [  305]     0   305     1425       56       5       0        0             0 cron
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391674] [  306]   105   306     1625      107       7       0        0          -900 dbus-daemon
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391680] [  308]   108   308     1601       77       7       0        0             0 avahi-daemon
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391686] [  316] 65534   316     1324       60       7       0        0             0 thd
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391692] [  366]     0   366     2534      130       8       0        0             0 wpa_supplicant
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391698] [  441]     0   441      524       34       5       0        0             0 hciattach
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391704] [  443]     0   443     1818       85       8       0        0             0 bluetoothd
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391709] [  525]     0   525      737      102       6       0        0             0 dhcpcd
Sep 20 07:00:25 ioBroker-RasPi kernel: [39618.391715] [  540]     0   540     1150       31       6       0        0             0 agetty

Ich bin bzgl Raspberry und Linux eher Laie, für mich sieht der Log aber unauffällig aus (???)
Den Raspberry hatte ich heute rebootet und direkt danach mal $ ps auxww|grep io ausgeführt, auf dem "frischen" System sah es dann so aus:

pi@ioBroker-RasPi:/opt/iobroker $ ps auxww|grep io
root        10  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/0]
root        13  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/1]
root        18  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/2]
root        23  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/3]
root        40  0.0  0.0      0     0 ?        I<   16:10   0:00 [rpciod]
root        41  0.0  0.0      0     0 ?        I<   16:10   0:00 [xprtiod]
root        45  0.0  0.0      0     0 ?        I<   16:10   0:00 [nfsiod]
root        58  0.0  0.0      0     0 ?        I<   16:10   0:00 [DWC Notificatio]
message+   299  0.6  0.3   6500  3316 ?        Ss   16:10   0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
avahi      312  0.0  0.2   6404  2820 ?        Ss   16:10   0:00 avahi-daemon: running [ioBroker-RasPi.local]
root       576 48.6 13.7 223416 130400 ?       Ssl  16:10   0:57 iobroker.js-controller
root       704 15.7  5.9 153944 56588 ?        Sl   16:10   0:18 io.admin.0
root       796  5.4  3.8 122640 36344 ?        Sl   16:10   0:05 io.hm-rpc.0
root       841 12.7  4.7 139784 45388 ?        Sl   16:10   0:13 io.hm-rega.0
root       888  4.7  3.6 132860 34844 ?        Sl   16:10   0:04 io.web.0
root       952  5.4  4.8 142908 46084 ?        Sl   16:10   0:05 io.rpi2.0
root       997  2.2  3.7 119496 35640 ?        Sl   16:10   0:02 io.socketio.0
root      1049  7.1  4.5 138268 42768 ?        Sl   16:10   0:06 io.cloud.0
root      1198 30.8 11.9 207592 113504 ?       Sl   16:11   0:25 io.javascript.0
root      1243  5.1  3.8 131564 36348 ?        Sl   16:11   0:04 io.sonoff.0
root      1303 10.8  4.7 136256 45412 ?        Sl   16:11   0:08 io.tr-064.0
root      1403  2.4  3.7 116736 35520 ?        Sl   16:11   0:01 io.milight.0
root      1457  6.9  3.7 130116 35900 ?        Sl   16:11   0:04 io.hm-rpc.1
root      1507  5.4  4.6 130400 43928 ?        Sl   16:11   0:03 io.tankerkoenig.0
root      1993 19.2  5.0 127056 47780 ?        Sl   16:12   0:04 io.hm-rpc.2
root      2044 17.7  4.6 130804 43676 ?        Sl   16:12   0:03 io.shelly.0
root      2185 27.8  4.5 124144 43156 ?        Sl   16:12   0:01 io.alexa2.0
root      2239 72.0  4.4 120504 41900 ?        Sl   16:12   0:02 io.radar.0
pi        2296  0.0  0.0   4776   524 pts/0    S+   16:12   0:00 grep --color=auto io

nachdem er sich dann wieder "aufgehängt" hat so:

pi@ioBroker-RasPi:/opt/iobroker $ ps auxww|grep io
root        10  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/0]
root        13  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/1]
root        18  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/2]
root        23  0.0  0.0      0     0 ?        S    16:10   0:00 [migration/3]
root        40  0.0  0.0      0     0 ?        I<   16:10   0:00 [rpciod]
root        41  0.0  0.0      0     0 ?        I<   16:10   0:00 [xprtiod]
root        45  0.0  0.0      0     0 ?        I<   16:10   0:00 [nfsiod]
root        58  0.0  0.0      0     0 ?        I<   16:10   0:00 [DWC Notificatio]
message+   299  0.2  0.0   6500   436 ?        Ss   16:10   0:38 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
avahi      312  0.0  0.0   6404   404 ?        Ss   16:10   0:00 avahi-daemon: running [ioBroker-RasPi.local]
root       576 10.7 10.3 203768 98724 ?        Ssl  16:10  25:51 iobroker.js-controller
root       796  0.6  4.2 134784 40028 ?        Sl   16:10   1:34 io.hm-rpc.0
root       888  0.1  3.1 140724 30284 ?        Sl   16:10   0:24 io.web.0
root      1303  1.8  4.1 146344 39008 ?        Sl   16:11   4:20 io.tr-064.0
root      1403  0.1  2.5 119500 24136 ?        Sl   16:11   0:18 io.milight.0
root      1507  0.1  4.1 134376 39248 ?        Sl   16:11   0:25 io.tankerkoenig.0
root      1993  0.1  3.3 138832 31612 ?        Sl   16:12   0:25 io.hm-rpc.2
root     19765  1.5  2.9 133572 27640 ?        Sl   20:03   0:07 io.cloud.0
root     19771  1.3  2.7 123724 25892 ?        Sl   20:03   0:06 io.hm-rpc.1
root     19777  1.0  2.7 131364 26300 ?        Sl   20:03   0:05 io.shelly.0
root     19782  1.7  2.7 127620 25692 ?        Sl   20:03   0:09 io.alexa2.0
root     19788  2.0  4.1 142900 39016 ?        Sl   20:03   0:10 io.radar.0
root     19795  1.5  3.7 142500 35996 ?        Sl   20:03   0:07 io.rpi2.0
root     19801  3.4  3.1 134608 29804 ?        Rl   20:03   0:17 io.hm-rega.0
root     19807  0.5  2.5 120012 24040 ?        Sl   20:03   0:02 io.socketio.0
root     19812  1.4  2.7 132584 26484 ?        Sl   20:03   0:07 io.sonoff.0
root     20057  6.7  8.4 170048 80340 ?        Rl   20:04   0:30 io.javascript.0
pi       20927  0.0  0.0   4776   508 pts/0    S+   20:11   0:00 grep --color=auto io

Auf der VIS Oberfläche (Port 8082) läuft aber alles stabil und es werden auch Werte upgedated.
Hat hier jemand eine Idee woran es liegen könnte oder wie man hier am besten weiter vorgeht um das Problem zu identifizieren? Ich bin irgendwie mit meinem Latein am Ende...

Danke im Voraus
Andreas

Oops, habe grade gesehen, dass "divedancer" dasselbe Problem unter "admin läuft nicht durch" vor 3 Stunden gepostet hat, kann man die beiden Posts irgendwie zusammenschieben ???