cassandra快照时打开文件过多

Question

java error occured when I try to cassandra snapshot.

root@cassandra mytest]# /usr/local/apache-cassandra-1.1.7/bin/nodetool -h localhost mytest

---

so, I added to /etc/security/limits.conf

follow this: http://www.datastax.com/docs/1.1/troubleshooting/index#java-reports-an-error-saying-there-are-too-many-open-files

• soft nofile 32768
• hard nofile 32768
• root soft nofile 32768
• root hard nofile 32768
• soft memlock unlimited
• hard memlock unlimited
• root soft memlock unlimited
• root hard memlock unlimited
• soft as unlimited
• hard as unlimited
• root soft as unlimited
• root hard as unlimited

but still error occured.

please hel me.

I use CentOS.

ps. I following this:
On CentOS, RHEL, OEL Sysems, change the system limits from 1024 to 10240 in /etc/security/limits.d/90-nproc.conf and then start a new shell for these changes to take effect. * soft nproc 10240

but i can't find "/etc/security/limits.d/90-nproc.conf"

i'm sorry. i'm poor at english.

Answer 1

In addition to limits.conf , you need to do the following:

Edit /etc/pam.d/login , adding the line:

session required /lib/security/pam_limits.so

please try it and let me know of the result.