General infos

Official Elastic docker registry :
docker.elastic.co Web site :
https://www.docker.elastic.co

Known Errors

ELK

Problem : VM’s max mnumber of memory map too low :
Symptom :
Elasticsearch container fails at startup with the error message :

ERROR: [1] bootstrap checks failed ESC[36mes02 |ESC[0m [1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

Solution :
1)Increase its value for the current session :
sysctl -w vm.max_map_count=262144
Or :
1 bis) Increase its value permanently :
Edit the /etc/sysctl.conf file and add the property such as :
vm.max_map_count=262144
Then reboot or reload the sys settings : sysctl --system
What max_map_count is ?

max_map_count:

This file contains the maximum number of memory map areas a process
may have. Memory map areas are used as a side-effect of calling
malloc, directly by mmap, mprotect, and madvise, and also when loading
shared libraries.
The default value is 65536.

Problem : Memory locking operation enabled in Elastic configuration but the memory is not locked on the system/container :
Symptom :
Elasticsearch container fails at startup with the error message :

ERROR: [1] bootstrap checks failed
[1]: memory locking requested for elasticsearch process but memory is not locked

Solution :
Ensure that bootstrap.memory_lock option be to false such as : bootstrap.memory_lock: false