On a sharded cluster running MongoDb 3.2.5 with WT, CSRS nodes simple shut down by themselves during startup.
Attaching the log files of the 3 nodes of the CSRS having the below details:

1. bxb-ppe-oas002 is the primary member of CSRS writing to local disk
2. chi-ppe-oas019 is the secondary member of CSRS writing to local disk
3. bxb-ppe-oas012 is the hidden member of CSRS writing to NFS

Here are the server details:

[oasprod@chi-ppe-oas019 ~]$ uname -a
Linux chi-ppe-oas019 3.10.0-229.el7.x86_64 #1 SMP Thu Jan 29 18:37:38 EST 2015 x86_64 x86_64 x86_64 GNU/Linux
[oasprod@chi-ppe-oas019 ~]$ cat /etc/red
redhat-lsb/ redhat-release
[oasprod@chi-ppe-oas019 ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.1 (Maipo)
[oasprod@chi-ppe-oas019 ~]$