Lab: Configuration File

MongoDB University M103: Basic Cluster Administration
#1

Hi,

I am getting below error message while running mongod through config file. Please suggest.

Config Contents File:
++++++++++++++++++++++
vagrant@m103:~/data$ cat mongod.conf
storage:
dbPath: “/data/db”
systemLog:
path: “/data/db/mongod.log”
destination: “file”
logAppend: true
net:
port: 27000
bindIp: “192.168.103.100,127.0.0.1”
security:
authorization: “enabled”

Error Details:
++++++++++++++++++++++++++++++++++++++++

vagrant@m103:~$ mongod -f /home/vagrant/data
tcmalloc: large alloc 9223372036854775808 bytes == (nil) @
2019-05-20T06:54:40.877+0000 F - [main] out of memory.

0x7fe0ffed1331 0x7fe0ffed0964 0x7fe0fffbfafb 0x7fe100062524 0x7fe0ffdf1db3 0x7fe0ffde679f 0x7fe0ffdeef01 0x7fe0fe53a171 0x7fe0fe52a583 0x7fe0ffe85c74 0x7fe0ffe86352 0x7fe0fe535297 0x7fe0fe4bb079 0x7fe0fa88ef45 0x7fe0fe52541f
----- BEGIN BACKTRACE -----
{“backtrace”:[{“b”:“7FE0FDAEA000”,“o”:“23E7331”,“s”:"_ZN5mongo15printStackTraceERSo"},{“b”:“7FE0FDAEA000”,“o”:“23E6964”,“s”:"_ZN5mongo29reportOutOfMemoryErrorAndExitEv"},{“b”:“7FE0FDAEA000”,“o”:“24D5AFB”},{“b”:“7FE0FDAEA000”,“o”:“2578524”,“s”:"_Znam"},{“b”:“7FE0FDAEA000”,“o”:“2307DB3”,“s”:"_ZNSt6vectorIcSaIcEE17_M_default_appendEm"},{“b”:“7FE0FDAEA000”,“o”:“22FC79F”,“s”:“ZN5mongo17optionenvironment13OptionsParser14readConfigFileERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS7”},{“b”:“7FE0FDAEA000”,“o”:“2304F01”,“s”:"_ZN5mongo17optionenvironment13OptionsParser3runERKNS0_13OptionSectionERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISB_EERKSt3mapISB_SB_St4lessISB_ESaISt4pairIKSB_SB_EEEPNS0_11EnvironmentE"},{“b”:“7FE0FDAEA000”,“o”:“A50171”,“s”:"_ZN5mongo17optionenvironment46_mongoInitializerFunction_StartupOptions_ParseEPNS_18InitializerContextE"},{“b”:“7FE0FDAEA000”,“o”:“A40583”,“s”:“ZNSt17_Function_handlerIFN5mongo6StatusEPNS0_18InitializerContextEEPS4_E9_M_invokeERKSt9_Any_dataOS3”},{“b”:“7FE0FDAEA000”,“o”:“239BC74”,“s”:"_ZNK5mongo11Initializer7executeERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EERKSt3mapIS7_S7_St4lessIS7_ESaISt4pairIKS7_S7_EEE"},{“b”:“7FE0FDAEA000”,“o”:“239C352”,“s”:“ZN5mongo21runGlobalInitializersEiPKPKcS3”},{“b”:“7FE0FDAEA000”,“o”:“A4B297”,“s”:“ZN5mongo11mongoDbMainEiPPcS1”},{“b”:“7FE0FDAEA000”,“o”:“9D1079”,“s”:“main”},{“b”:“7FE0FA86D000”,“o”:“21F45”,“s”:"__libc_start_main"},{“b”:“7FE0FDAEA000”,“o”:“A3B41F”}]}
mongod(_ZN5mongo15printStackTraceERSo+0x41) [0x7fe0ffed1331]
mongod(_ZN5mongo29reportOutOfMemoryErrorAndExitEv+0x84) [0x7fe0ffed0964]
mongod(+0x24D5AFB) [0x7fe0fffbfafb]
mongod(_Znam+0x224) [0x7fe100062524]
mongod(_ZNSt6vectorIcSaIcEE17_M_default_appendEm+0x83) [0x7fe0ffdf1db3]
mongod(ZN5mongo17optionenvironment13OptionsParser14readConfigFileERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS7+0x25F) [0x7fe0ffde679f]
mongod(_ZN5mongo17optionenvironment13OptionsParser3runERKNS0_13OptionSectionERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISB_EERKSt3mapISB_SB_St4lessISB_ESaISt4pairIKSB_SB_EEEPNS0_11EnvironmentE+0x1631) [0x7fe0ffdeef01]
mongod(_ZN5mongo17optionenvironment46_mongoInitializerFunction_StartupOptions_ParseEPNS_18InitializerContextE+0x51) [0x7fe0fe53a171]
mongod(ZNSt17_Function_handlerIFN5mongo6StatusEPNS0_18InitializerContextEEPS4_E9_M_invokeERKSt9_Any_dataOS3+0x23) [0x7fe0fe52a583]
mongod(_ZNK5mongo11Initializer7executeERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EERKSt3mapIS7_S7_St4lessIS7_ESaISt4pairIKS7_S7_EEE+0x1E4) [0x7fe0ffe85c74]
mongod(ZN5mongo21runGlobalInitializersEiPKPKcS3+0x352) [0x7fe0ffe86352]
mongod(ZN5mongo11mongoDbMainEiPPcS1+0xA7) [0x7fe0fe535297]
mongod(main+0x9) [0x7fe0fe4bb079]
libc.so.6(__libc_start_main+0xF5) [0x7fe0fa88ef45]
mongod(+0xA3B41F) [0x7fe0fe52541f]
----- END BACKTRACE -----
vagrant@m103:~$ cd \

^C
++++++++++++++++++++++++++++++++++++++++

Thanks.

#2

Hi @Amiya_Kumar_23839,

The command for launching mongod is incomplete. Please add the name of the configuration file in this command.

Let me know, if it helps.

Thanks,
Sonali

#3

Hi Sonali,
Thank You ! it worked fine now.
However, I have another query related to this, please suggest.
I am observing there is no console output from mongod after the mongo connected , earlier we can see the logs when any connection opened thorough mongo but now its blank screen.
Please let me know if there is another way to get that details. any log file ?

i am pasting the details what i am seeing
vagrant@m103:~$ mongod -f /home/vagrant/data/mongod.conf

image

#4

The logs are in the file specified in the configuration file.

#5

Hi @Amiya_Kumar_23839,

That is right!!

If you take a look at the config file, we specify the path where we want to store all the logs. Here we are storing logs in mongod.log file.
You can check this file to view the log entries.

Please let me know, if you have any doubts.

Thanks,
Sonali