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Type:
Problem report
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Resolution: Unresolved
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Priority:
Trivial
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Affects Version/s: 7.0.24
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Component/s: Agent2 plugin (G)
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None
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Sprint candidates
Steps to reproduce:
- Install Agent2 with ModBus plugin support
- Make host with several Items that uses modbus.get key (See attachments)
- Perform command for each port used by modbus.get
sudo iptables -A INPUT -p tcp --dport 1502 -j DROP
This will make item to timeout
- Let this configuration run for sometime (10-15 minutes)
- Stop Agent2 (Ctrl+C)
Result:
SSH console response
panic: runtime error: index out of range [1] with length 0 [recovered]
panic: runtime error: index out of range [1] with length 0
goroutine 8 [running]:
golang.zabbix.com/sdk/log.PanicHook()
/home/zabbix/work/pkg/mod/golang.zabbix.com/[email protected]/log/log.go:309 +0x214
panic({0xe4f440?, 0xc000038cf0?})
/home/zabbix/work/pkg/mod/golang.org/[email protected]/src/runtime/panic.go:792 +0x132
golang.zabbix.com/agent2/internal/agent/scheduler.pluginHeap.Less({0xc000010150?, 0xc000155a30?, 0x9000000004790b9?}, 0x1000101?, 0x0?)
/home/zabbix/workspace/ZBX-27542-7.0/src/go/internal/agent/scheduler/pluginheap.go:29 +0xf7
container/heap.up({0xfe27a0, 0xc000206a60}, 0x1?)
/home/zabbix/work/pkg/mod/golang.org/[email protected]/src/container/heap/heap.go:92 +0x74
container/heap.Fix({0xfe27a0, 0xc000206a60}, 0x1)
/home/zabbix/work/pkg/mod/golang.org/[email protected]/src/container/heap/heap.go:85 +0x58
golang.zabbix.com/agent2/internal/agent/scheduler.(*pluginHeap).Update(...)
/home/zabbix/workspace/ZBX-27542-7.0/src/go/internal/agent/scheduler/pluginheap.go:75
golang.zabbix.com/agent2/internal/agent/scheduler.(*Manager).processFinishRequest(0xc000206a50, {0xfe9bc0, 0xc0002626c0})
/home/zabbix/workspace/ZBX-27542-7.0/src/go/internal/agent/scheduler/manager.go:509 +0x214
golang.zabbix.com/agent2/internal/agent/scheduler.(*Manager).run(0xc000206a50)
/home/zabbix/workspace/ZBX-27542-7.0/src/go/internal/agent/scheduler/manager.go:616 +0x874
created by golang.zabbix.com/agent2/internal/agent/scheduler.(*Manager).Start in goroutine 1
/home/zabbix/workspace/ZBX-27542-7.0/src/go/internal/agent/scheduler/manager.go:690 +0xa5
2. If you start-stop Agent2 again - problem will not occur.
If you let Agent2 run for sometime - it will appear again.
Expected:
Expected no panic or critical messages when stoping Agent2
