# Scylla OSS 5.2.9 fails to start with Dynatrace agent installed
**URL:** https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968
**Category:** ScyllaDB
**Tags:** open-source
**Created:** [November 2, 2023, 1:50pm UTC](https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968 "2023-11-02T13:50:09Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@swarooppatra](https://forum.scylladb.com/u/swarooppatra)
#### Post date: [November 2, 2023, 1:50pm UTC](https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968/1 "2023-11-02T13:50:09Z")
Hi ScyllaDB team,
For instance monitoring we use Dynatrace Oneagent software. This software needs to start before ScyllaDB starts. So we install OneAgent, starte OneAgent service then ScyllaDB.
But Scylla OSS 5.2.9 fails to start and dumps below log. Can someone help resolving this error please.
systemd-coredump: Process 29201 (scylla) of user 991 dumped core.#012#012Stack trace of thread 29201:#012#0 0x00007f4baf32f2a0 n/a (liboneagentproc.so)#012#1 0x0000000004fb1cda \_Unwind\_RaiseException (scylla)#012#2 0x00007f4bada4674b \_\_cxa\_throw (libstdc++.so.6)#012#3 0x00007f4bada3a772 \_\_cxa\_guard\_acquire.cold (libstdc++.so.6)#012#4 0x0000000004fb1c67 dl\_iterate\_phdr (scylla)#012#5 0x00007f4baf340a66 n/a (liboneagentproc.so)#012#6 0x00007f4baf346eaa n/a (liboneagentproc.so)#012#7 0x00007f4baf347130 n/a (liboneagentproc.so)#012#8 0x00007f4baf3437d4 dlsym (liboneagentproc.so)#012#9 0x0000000004fb1c7c dl\_iterate\_phdr (scylla)#012#10 0x00007f4baf340a66 n/a (liboneagentproc.so)#012#11 0x00007f4baf346eaa n/a (liboneagentproc.so)#012#12 0x00007f4baf347130 n/a (liboneagentproc.so)#012#13 0x00007f4baf3426cc fopen (liboneagentproc.so)#012#14 0x00007f4baeb96603 \_gnutls\_fips\_mode\_enabled (libgnutls.so.30)#012#15 0x00007f4baeb8630a \_gnutls\_rnd\_preinit (libgnutls.so.30)#012#16 0x00007f4baeb7615d \_gnutls\_global\_init (libgnutls.so.30)#012#17 0x00007f4baeb44fa3 lib\_init (libgnutls.so.30)#012#18 0x00007f4baf548cde call\_init (ld.so)#012#19 0x00007f4baf548dcc \_dl\_init (ld.so)#012#20 0x00007f4baf55f8e0 n/a (ld.so)
Thanks,
Swaroop
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### Author:  [@Tomersan](https://forum.scylladb.com/u/Tomersan)
#### Post date: [November 3, 2023, 5:36am UTC](https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968/2 "2023-11-03T05:36:10Z")
We have seen problems with Dynatrace agent running alongside Scylla before. As it hooks to processes, it can cause not only Scylla to stall but in worse scenarios it may even cause the process to get hang. The general recommendation is simply not to run 3rd party processes along with Scylla. But if you really really must it, then contact your Dynatrace support team and ask for instructions on how to tell the agent not to hook to the Scylla process and also for the proper way to pin the agent to use specific CPUs, that Scylla is/will not actively (be) using.
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### Author:  [@RobertCz](https://forum.scylladb.com/u/RobertCz)
#### Post date: [June 21, 2024, 8:40am UTC](https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968/3 "2024-06-21T08:40:22Z")
Newest version of Dynatrace OneAgent was fixed and now coexist with Scylla \> 5.2.
● oneagent.service - Dynatrace OneAgent
Loaded: loaded (/etc/systemd/system/oneagent.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2024-06-21 10:28:03 CEST; 4min 49s ago
Process: 1065 ExecStart=/opt/dynatrace/oneagent/agent/initscripts/oneagent start (code=exited, status=0/SUCCESS)
Main PID: 1178 (oneagentwatchdo)
Tasks: 50 (limit: 38413)
Memory: 244.8M
CGroup: /system.slice/oneagent.service
├─1178 /opt/dynatrace/oneagent/agent/lib64/oneagentwatchdog -bg -config=/opt/dynatrace/oneagent/agent/conf/watchdog.conf
├─1187 oneagentos -Dcom.compuware.apm.WatchDogTimeout=900 -watchdog.restart\_file\_location=/var/lib/dynatrace/oneagent/a\>
├─1203 oneagentplugin -Dcom.compuware.apm.WatchDogTimeout=900 -Dcom.compuware.apm.WatchDogPort=50001
├─1205 oneagentloganalytics -Dcom.compuware.apm.WatchDogTimeout=900 -Dcom.compuware.apm.WatchDogPort=50002
├─1207 oneagentnetwork -Dcom.compuware.apm.WatchDogTimeout=900 -Dcom.compuware.apm.WatchDogPort=50003
├─1273 /opt/dynatrace/oneagent/agent/lib64/oneagenteventstracer --logdir /var/log/dynatrace/oneagent/os --cputimeoffset\>
└─1958 /opt/dynatrace/oneagent/agent/lib64/oneagentebpfdiscovery --log-dir /var/log/dynatrace/oneagent/os/ --log-no-std\>
Jun 21 10:28:03 systemd[1]: Starting Dynatrace OneAgent…
Jun 21 10:28:03 oneagent[1182]: 10:28:03 Dynatrace OneAgent service started.
Jun 21 10:28:03 systemd[1]: Started Dynatrace OneAgent.
● scylla-server.service - Scylla Server
Loaded: loaded (/lib/systemd/system/scylla-server.service; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/scylla-server.service.d
└─capabilities.conf, dependencies.conf, sysconfdir.conf
Active: active (running) since Fri 2024-06-21 10:28:14 CEST; 4min 46s ago
Process: 861 ExecStartPre=/opt/scylladb/scripts/scylla\_prepare (code=exited, status=0/SUCCESS)
Main PID: 1069 (scylla)
Status: “serving”
Tasks: 8 (limit: 38413)
Memory: 29.2G
CGroup: /scylla.slice/scylla-server.slice/scylla-server.service
└─1069 /usr/bin/scylla --log-to-syslog 1 --log-to-stdout 0 --default-log-level info --network-stack posix --io-properti\>
Jun 21 10:28:39 scylla[1069]: [shard 0:main] init - Scylla version 5.4.7-0.20240602.98139a8716ab initia
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### Author:  [@swarooppatra](https://forum.scylladb.com/u/swarooppatra)
#### Post date: [June 28, 2024, 2:02pm UTC](https://forum.scylladb.com/t/scylla-oss-5-2-9-fails-to-start-with-dynatrace-agent-installed/968/4 "2024-06-28T14:02:41Z")
Thanks for the update. But we have upgraded to 6.0.0 and we don’t see this issue anymore