'"]}
[2018-08-13T17:17:19,227][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit
```
I've used the latest RPM from the Elastic Repo:
```auto
# rpm -qa |grep logstash
logstash-6.3.1-1.noarch
```
My /etc/logstash/logstash.yml (partly obfuscated):
```auto
# grep -v "^#" /etc/logstash/logstash.yml
node.name: XXXXp66
path.data: /var/lib/logstash/
path.config: /etc/logstash/conf.d/*.conf
queue.type: persisted
path.queue: /var/lib/logstash/queue
queue.page_capacity: 64mb
queue.max_bytes: 80gb
queue.checkpoint.acks: 1024
queue.checkpoint.writes: 1024
queue.checkpoint.interval: 1000
dead_letter_queue.enable: true
dead_letter_queue.max_bytes: 1024mb
path.dead_letter_queue:
http.host: "[XXXX:XXXX:X:9::2]"
http.port: 9600
path.logs: /var/log/logstash
xpack.monitoring.enabled: true
xpack.monitoring.elasticsearch.username: logstash_system
xpack.monitoring.elasticsearch.password: ${logstash_system_password}
xpack.monitoring.elasticsearch.url: ["https://[XXXX:XXXX:X:a::5]:9200", "https://[XXXX:XXXX:X:a::6]:9200", "[XXXX:XXXX:X:a::7]:9200"]
xpack.monitoring.elasticsearch.ssl.ca: "/etc/logstash/certs/XXXXp66.ca.crt"
xpack.monitoring.elasticsearch.ssl.verification_mode: certificate
xpack.monitoring.elasticsearch.sniffing: false
xpack.monitoring.collection.interval: 10s
xpack.monitoring.collection.pipeline.details.enabled: true
xpack.management.enabled: false
xpack.management.pipeline.id: ["..."]
xpack.management.elasticsearch.username: logstash_system
xpack.management.elasticsearch.password: ${logstash_system_password}
xpack.management.elasticsearch.url: ["https://[XXXX:XXXX:X:a::5]:9200", "https://[XXXX:XXXX:X:a::6]:9200", "[XXXX:XXXX:X:a::7]:9200"]
xpack.management.elasticsearch.ssl.ca: "/etc/logstash/certs/XXXXp66.ca.crt"
xpack.management.elasticsearch.sniffing: false
xpack.management.logstash.poll_interval: 5s
```
Contents of /var/lib/logstash/ directory:
```auto
# ls -laZ /var/lib/logstash/
drwxr-xr-x. logstash logstash system_u:object_r:var_lib_t:s0 .
drwxr-xr-x. root root system_u:object_r:var_lib_t:s0 ..
drwxr-xr-x. logstash logstash system_u:object_r:var_lib_t:s0 queue
```
I've found some previous threads, where data.path has not been set, but that doesn't seem the case here.
Anyone any idea?
Thanks!
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [August 13, 2018, 4:35pm UTC](https://discuss.elastic.co/t/error-starting-logstash-on-rhel7-5/144200/2 "2018-08-13T16:35:07Z")
> [@ariemenschneider](#):
>
> path.dead\_letter\_queue:
You have enable DLQ, but the path you have supplied is nil. Which is why you get
```
no implicit conversion of nil into String>, :backtrace=>["org/jruby/RubyFileTest.java:96:in `directory?'",
```
---
### Author:  [@ariemenschneider](https://discuss.elastic.co/u/ariemenschneider)
#### Post date: [August 14, 2018, 7:59am UTC](https://discuss.elastic.co/t/error-starting-logstash-on-rhel7-5/144200/3 "2018-08-14T07:59:00Z")
Hello Badger,
thanks for the solution. With
```auto
path.dead_letter_queue: /var/lib/logstash/dead_letter_queue
```
Logstash is starting now. I've been confused by the comment in logstash.yml
```auto
# If using dead_letter_queue.enable: true, the directory path where the data files will be stored.
# Default is path.data/dead_letter_queue
```
Kind regards,
Alex
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 11, 2018, 7:59am UTC](https://discuss.elastic.co/t/error-starting-logstash-on-rhel7-5/144200/4 "2018-09-11T07:59:13Z")
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