amazon web services - Error when trying to increase storage on RDS MySQL instance -

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i'm trying increase allocated storage 2000gb 2260gb (and iops 6000 7000) on rds mysql instance , i'm getting following error message:

null (service: amazonrds; status code: 500; error code: internalfailure; request id: ea593451-3454-11e5-bc38-b7fa8a060cf1)

the read replica instance has had it's storage , iops increased, that's not issue.

any ideas might causing this? if i've missed key info, please let me know in comments.

this error caused fact memchached 1 enabled in options group assigned rds instance trying increase storage for.

from aws support engineer:

you got in contact unable initiate scale storage rds instance olympus- receiving internal error.

after reviewing further on side let know following error being reported:

the option 'memcached' cannot deleted instance olympus has read replica has memcached present.

this has been brought rds team issue. aware of , working on fix, unfortunately im unable give timeframe on this.

to workaround issue suggested:

  1. modify instance instance using default option group i.e. disable memcache
  2. then modify allocated storage on instance.
  3. once scale complete re-add memcache option group

after carrying out above suggested steps, able resize instance , now.


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