Hi , 

 

We have sharded cluster using bitnami helm chart deployment  : 

https://github.com/bitnami/charts/tree/main/bitnami/mongodb-sharded 

 

We just upgrade our cluster to 6.0.5 ( previous version is mongodb-sharded:4.4.1 ) .

 

before the upgrade : 

1- config server was stable with 2Gi memory 

 

After the upgrade ( create a new cluster and restore the dump to the new cluster )  :

1- the config server keeps consuming the memory then hitting the limit of memory capacity => config server pod ( deployed on k8s ) restart :

dmesg -T : 

[Wed May 10 10:34:28 2023] Memory cgroup out of memory: Kill process 29734 (conn2890) score 1615 or sacrifice child
[Wed May 10 10:34:28 2023] Killed process 186708 (mongod), UID 1001, total-vm:12369392kB, anon-rss:9388828kB, file-rss:33772kB, shmem-rss:0kB

mongo sys info : 
{
  system:

{     currentTime: ISODate("2023-05-10T10:55:30.141Z"),     hostname: 'mongo-distrib-prod-configsvr-0',     cpuAddrSize: 64,     memSizeMB: Long("23912"),     memLimitMB: Long("9216"),     numCores: 16,     numPhysicalCores: 16,     numCpuSockets: 8,     cpuArch: 'x86_64',     numaEnabled: false,     numNumaNodes: 1   }

,

2- increased from 2 Gi to 5Gi => 9Gi ( without success ) .

3- the same DB ( same version and helm chart )   is deployed on different ENV ( different workload ) and is working well 

Any suggestion please ?

 

 

Thank you