MongoDB NUMA series Issue One: [Initandlisten] Connection refused because too many open connections:

1:mongod logs have a lot of such errors:

[Initandlisten] Connection refused because too many open connections:

2: View System Limitations

Core file size          (blocks,-c) 0data seg size           (Kbytes,-D) unlimitedscheduling priority             (-e) 0file size               (blo Cks,-F) unlimitedpending signals (-I                 ) 256072max locked memory       (Kbytes, L) 64max memory size         (Kbytes,-m) UNL Imitedopen files                      (-N) 65535pipe size            (bytes,-p) 8POSIX message Queues     (bytes,-Q) 819200real-time Priori Ty              (-r) 0stack size              (Kbytes,-s) 10240cpu time               (seconds,-t) Unlimitedmax user Processes              (-u) 65535virtual Memory          (Kbytes,-V) unlimitedfile locks                      (-X) Unlimited

It is not a system problem to verify the startup parameters of the mongod.conf.

3: Restart Mongod after adding numactl--interleave=all parameter

#numactl--interleave=all Mongod--config/mongodb/mongod.conf

　　

4: You can also add the following parameters to temporarily change the memory management policy

#echo 0 >/proc/sys/vm/zone_reclaim_mode
#echo 2 >/proc/sys/vm/overcommit_memory

Next blog post:

Http://www.cnblogs.com/xiaoit/p/4484343.html

MongoDB NUMA series Issue One: [Initandlisten] Connection refused because too many open connections: