Adapter agent is failed to start with error "User limit of inotify instances reached or too many open files"
Article ID: KB0078840
Updated On:
| Products | Versions |
|---|---|
| TIBCO ActiveMatrix Adapter Framework | 1.3.x,1.4.x |
Description
Adapter agent is failed to start with following error,
===========
17:23:02.990 [/opt/tibco/afx/1.3/config/adapteragent.ini watcher] ERROR c.t.b.t.m.c.PropertiesFileMonitor - failed to setup watcher for /opt/tibco/afx/1.3/config/adapteragent.ini
java.io.IOException: User limit of inotify instances reached or too many open files
at sun.nio.fs.LinuxWatchService.<init>(LinuxWatchService.java:64) ~[na:1.8.0_121]
at sun.nio.fs.LinuxFileSystem.newWatchService(LinuxFileSystem.java:47) ~[na:1.8.0_121]
at com.tibco.bw.thor.management.common.PropertiesFileMonitor$1.run(PropertiesFileMonitor.java:73) ~[com.tibco.adapter.management.common_1.1.100.006.jar:na]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
tail: inotify cannot be used, reverting to polling: Too many open files
===========
This is error occurred due to the upper limit on the number of inotify instances has been reached.At the OS kernel level having the inotify API which provides a mechanism for monitoring individual files or directories and which contains the max_user_instances interface that is used to limit the amount of kernel memory instance consumed by inotify.
Environment
Resolution
1)Check current value of max_user_instances:
$ cat /proc/sys/fs/inotify/max_user_instances
2)increase that value:
$ echo 256 > /proc/sys/fs/inotify/max_user_instances
3)In order to make that change permanent add a line to /etc/sysctl.conf:
fs.inotify.max_user_instances = 256
Issue/Introduction
Additional Information
