Hello, our Zabbix_server suddently began to crash when there were no changes to the OS. An Upgrade to 5.4.2 was done but problem persists.
Here are the logs:
## PART1
Last change in zabbix added the preprocessing step "1" as seen in the screenshot

Zabbix Server is running on Ubuntu 20.04.2 with mysql V14.14
Here are the logs:
## PART1
Code:
18210:20210630:082909.071 Starting Zabbix Server. Zabbix 5.4.2 (revision 4c8f9aabe1). 18210:20210630:082909.071 ****** Enabled features ****** 18210:20210630:082909.071 SNMP monitoring: YES 18210:20210630:082909.071 IPMI monitoring: YES 18210:20210630:082909.071 Web monitoring: YES 18210:20210630:082909.071 VMware monitoring: YES 18210:20210630:082909.071 SMTP authentication: YES 18210:20210630:082909.071 ODBC: YES 18210:20210630:082909.071 SSH support: YES 18210:20210630:082909.071 IPv6 support: YES 18210:20210630:082909.071 TLS support: YES 18210:20210630:082909.071 ****************************** 18210:20210630:082909.071 using configuration file: /etc/zabbix/zabbix_server.conf 18210:20210630:082909.075 current database version (mandatory/optional): 05040000/05040000 18210:20210630:082909.075 required mandatory version: 05040000 18210:20210630:082909.082 cannot redirect signal: shutdown in progress 18210:20210630:082909.086 server #0 started [main process] 18212:20210630:082909.086 server #1 started [configuration syncer #1] 18234:20210630:082910.389 server #2 started [housekeeper #1] 18235:20210630:082910.389 server #3 started [timer #1] 18236:20210630:082910.389 server #4 started [http poller #1] 18237:20210630:082910.390 server #5 started [discoverer #1] 18238:20210630:082910.391 server #6 started [discoverer #2] 18239:20210630:082910.392 server #7 started [discoverer #3] 18257:20210630:082910.398 server #25 started [poller #3] 18249:20210630:082910.398 server #17 started [vmware collector #1] 18255:20210630:082910.399 server #23 started [poller #1] 18259:20210630:082910.399 server #26 started [poller #4] 18250:20210630:082910.399 server #18 started [vmware collector #2] 18251:20210630:082910.399 server #19 started [vmware collector #3] 18254:20210630:082910.400 server #22 started [task manager #1] 18256:20210630:082910.400 server #24 started [poller #2] 18240:20210630:082910.403 server #8 started [discoverer #4] 18265:20210630:082910.404 server #32 started [poller #10] 18243:20210630:082910.404 server #11 started [history syncer #2] 18260:20210630:082910.405 server #27 started [poller #5] 18241:20210630:082910.405 server #9 started [discoverer #5] 18253:20210630:082910.409 server #21 started [vmware collector #5] 18266:20210630:082910.410 server #33 started [poller #11] 18262:20210630:082910.410 server #29 started [poller #7] 18242:20210630:082910.410 server #10 started [history syncer #1] 18261:20210630:082910.410 server #28 started [poller #6] 18252:20210630:082910.413 server #20 started [vmware collector #4] 18248:20210630:082910.414 server #16 started [self-monitoring #1] 18244:20210630:082910.414 server #12 started [history syncer #3] 18274:20210630:082910.414 server #41 started [unreachable poller #4] 18270:20210630:082910.415 server #37 started [poller #15] 18247:20210630:082910.417 server #15 started [proxy poller #1] 18268:20210630:082910.418 server #35 started [poller #13] 18263:20210630:082910.418 server #30 started [poller #8] 18269:20210630:082910.420 server #36 started [poller #14] 18272:20210630:082910.421 server #39 started [unreachable poller #2] 18267:20210630:082910.421 server #34 started [poller #12] 18264:20210630:082910.422 server #31 started [poller #9] 18273:20210630:082910.424 server #40 started [unreachable poller #3] 18271:20210630:082910.425 server #38 started [unreachable poller #1] 18246:20210630:082910.430 server #14 started [escalator #1] 18276:20210630:082910.438 server #43 started [unreachable poller #6] 18277:20210630:082910.445 server #44 started [unreachable poller #7] 18245:20210630:082910.446 server #13 started [history syncer #4] 18280:20210630:082910.447 server #47 started [unreachable poller #10] 18275:20210630:082910.448 server #42 started [unreachable poller #5] 18281:20210630:082910.453 server #48 started [trapper #1] 18279:20210630:082910.456 server #46 started [unreachable poller #9] 18282:20210630:082910.457 server #49 started [trapper #2] 18286:20210630:082910.458 server #53 started [trapper #6] 18278:20210630:082910.461 server #45 started [unreachable poller #8] 18283:20210630:082910.466 server #50 started [trapper #3] 18292:20210630:082910.467 server #58 started [icmp pinger #1] 18288:20210630:082910.473 server #54 started [trapper #7] 18290:20210630:082910.473 server #56 started [trapper #9] 18289:20210630:082910.474 server #55 started [trapper #8] 18291:20210630:082910.474 server #57 started [trapper #10] 18285:20210630:082910.475 server #52 started [trapper #5] 18284:20210630:082910.481 server #51 started [trapper #4] 18299:20210630:082910.486 server #64 started [icmp pinger #7] 18298:20210630:082910.488 server #63 started [icmp pinger #6] 18293:20210630:082910.489 server #59 started [icmp pinger #2] 18300:20210630:082910.489 server #65 started [icmp pinger #8] 18301:20210630:082910.489 server #66 started [icmp pinger #9] 18297:20210630:082910.489 server #62 started [icmp pinger #5] 18295:20210630:082910.489 server #60 started [icmp pinger #3] 18296:20210630:082910.489 server #61 started [icmp pinger #4] 18302:20210630:082910.490 server #67 started [icmp pinger #10] 18303:20210630:082910.490 server #68 started [icmp pinger #11] 18304:20210630:082910.490 server #69 started [icmp pinger #12] 18308:20210630:082910.492 server #72 started [icmp pinger #15] 18306:20210630:082910.494 server #70 started [icmp pinger #13] 18307:20210630:082910.495 server #71 started [icmp pinger #14] 18314:20210630:082910.497 server #77 started [preprocessing manager #1] 18313:20210630:082910.498 server #76 started [alerter #3] 18309:20210630:082910.498 server #73 started [alert manager #1] 18311:20210630:082910.499 server #75 started [alerter #2] 18316:20210630:082910.500 server #79 started [preprocessing worker #2] 18317:20210630:082910.500 server #80 started [preprocessing worker #3] 18318:20210630:082910.500 server #81 started [lld manager #1] 18319:20210630:082910.501 server #82 started [lld worker #1] 18320:20210630:082910.501 server #83 started [lld worker #2] 18323:20210630:082910.502 server #86 started [history poller #2] 18324:20210630:082910.502 server #87 started [history poller #3] 18310:20210630:082910.503 server #74 started [alerter #1] 18322:20210630:082910.504 server #85 started [history poller #1] 18325:20210630:082910.504 server #88 started [history poller #4] 18326:20210630:082910.506 server #89 started [history poller #5] 18321:20210630:082910.506 server #84 started [alert syncer #1] 18327:20210630:082910.507 server #90 started [availability manager #1] 18315:20210630:082910.507 server #78 started [preprocessing worker #1] 18316:20210630:082911.477 Got signal [signal:11(SIGSEGV),reason:128,refaddr:(nil)]. Crashing ...
Zabbix Server is running on Ubuntu 20.04.2 with mysql V14.14
Comment