12-31-2019
Hi Neo,
my 2 cents:
You maybe did so but if not, knowing the type of process it involves, I would have chosen as you did a calm period for the task, and to not waste proc time due to the different caches, try to optimize what I can/ where I can e.g. not sure you can change the cache ration of the FS or underlying storage ( I suppose that is more the provider's duty...) but you have access to your RDBMS kernel I would reduce its cache working storage to force the reading of the true data) this is efficient for big batch processes when you know you are after data not often read ( so no chance of finding them in caches), of course, it impacts ordinary online interactive work but as you have fewer requests thrown by online users its acceptable... it should improve a bit your step 4...
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LEARN ABOUT DEBIAN
kdestroy
KDESTROY(1) General Commands Manual KDESTROY(1)
NAME
kdestroy - destroy Kerberos tickets
SYNOPSIS
kdestroy [-A] [-q] [-c cache_name]
DESCRIPTION
The kdestroy utility destroys the user's active Kerberos authorization tickets by writing zeros to the specified credentials cache that
contains them. If the credentials cache is not specified, the default credentials cache is destroyed.
OPTIONS
-A Destroys all caches in the collection, if a cache collection is available. -q Run quietly. Normally kdestroy beeps if it fails to
destroy the user's tickets. The -q flag suppresses this behavior.
-c cache_name
use cache_name as the credentials (ticket) cache name and location; if this option is not used, the default cache name and location
are used.
The default credentials cache may vary between systems. If the KRB5CCNAME environment variable is set, its value is used to name
the default ticket cache.
Most installations recommend that you place the kdestroy command in your .logout file, so that your tickets are destroyed automatically
when you log out.
ENVIRONMENT
Kdestroy uses the following environment variables:
KRB5CCNAME Location of the default Kerberos 5 credentials (ticket) cache, in the form type:residual. If no type prefix is present,
the FILE type is assumed. The type of the default cache may determine the availability of a cache collection; for
instance, a default cache of type DIR causes caches within the directory to be present in the collection.
FILES
/tmp/krb5cc_[uid] default location of Kerberos 5 credentials cache ([uid] is the decimal UID of the user).
SEE ALSO
kinit(1), klist(1), krb5(3)
BUGS
Only the tickets in the specified credentials cache are destroyed. Separate ticket caches are used to hold root instance and password
changing tickets. These should probably be destroyed too, or all of a user's tickets kept in a single credentials cache.
KDESTROY(1)