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Given the current settings on a directory server I'm still seeing the errors below in the logs at peak times.
"ERR - setup_pr_read_pds - Not listening for new connections - too many fds open"
nsslapd-reservedescriptors: 64
nsslapd-maxdescriptors: 65535
nsslapd-conntablesize: 8192
At the OS level the ns-slapd process is set to 65535 as well.
Max open files 65535
After reading the RHDS documentation it's a bit unclear as to how these parameters work together.
The conntablesize documentation states:
"The default value for nsslapd-conntablesize is the systems maxdescriptors which can be confiured using nsslapd-maxdescriptors"
Now
we look at the documentation for maxdescriptors:
nsslapd-conntablesize,
and is equal to the nsslapd-maxdescriptors attribute
minus the number of file descriptors used by the server as specified in the nsslapd-reservedescriptors attribute
for non-client connections, such as index management and managing replication. The nsslapd-reservedescriptors attribute
is the number of file descriptors available for other uses as described above.
Based
on the numbers currently set does this mean no action needs to be taken as this implies maxdescriptors takes precedence over conntablesize?
Or
should I set conntablesize to 65535-64 = 65471?
3.1.1.60. nsslapd-conntablesize
This attribute sets the connection table size, which determines the total number of connections supported by the server.
The server has to be restarted for changes to this attribute to go into effect.
Increase the value of this attribute if Directory Server is refusing connections because it is out of connection slots. When this occurs, the Directory Server's error log file records the message
A server restart is required for the change
to take effect.Not
listening for new connections -- too many fds open.
Thanks
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