Analytics DB services were down with "Database:Cassandra connection down" Disk space not retrieval  

contrail analytics services were non functional

Disk usage on the analytics DB was high.

Check "du -hs" to list the filesystem and check which filesystem has high disk usage.

(In this case /var/ was 100%)

du -hs /var/* (this will list the dir. which have occupied high disk space)

(list the files under the dir. "ls -lhSr")

console.log was hogging almost 215GB of space, "echo > console.log" (this will write a null to the file) and reduce the space.

restart the containers.