CODEWITHSUNDEEP
ubuntuelasticsearch
Bart van den Burg
Bart van den Burg

Reputation: 2344

Max number of threads for elasticsearch too low

I have a fresh installation of Ubuntu 16.04 and I installed elasticsearch 5 on it. Now when I try to start elasticsearch using

/etc/init.d/elasticsearch start

After a few seconds in the log file I read: 

[2016-11-19T08:47:31,442][ERROR][o.e.b.Bootstrap          ] [shooter-1] node validation exception
bootstrap checks failed
max number of threads [1891] for user [elasticsearch] likely too low, increase to at least [2048]

After some googling, I came to the conclusion that I had to add the following line to /etc/security/limits.conf:

elasticsearch    -       nproc           2048

However, even after this change, I still get the same error.

I found a suggestion to uncomment the line session required pam_limits.so in /etc/pam.d/su, but that line was already uncommented.

What am I missing?

Upvotes: 1

Views: 4548

Answers (1)

user1017719
user1017719

Reputation: 101

It's possible this issue is related to insufficient memory on the machine. I was running into other problems, including this one, all of which were fixed by increasing the amount of memory (from 512MB to 1GB).

Upvotes: 1

Related Questions