corosync-objctl (8)

corosync-objctl [-b] [-c|-w|-d|-a|-t-h] <OBJECT-SPEC>...

corosync-objctl is used to configure objects within the object database at runtime.

There are two types of entities

Objects and Key=Value pairs

Objects

Objects are container like entities that can hold other entities. They are specified as "objectA"."objectB". An example is logging.logger.

Key=Value pairs

These are the entities that actually hold values (read database "fields"). They are specified as object.key=value or just object.key if you are reading.

-c

Create a new object.

-d

Delete an existing object.

-w

Use this option when you want to write a new value to a key.

-a

Display all values currently available.

-t

Track changes to an object and it's children. As changes are made to the object they are printed out. this is kind of like a "tail -f" for the object database.

-h

Print basic usage.

-b

Display binary values in BASH backslash escape sequences format.

Print the objOne object (shouldn't exist yet).

$ corosync-objctl objOne

Create the objOne object.

$ corosync-objctl -c objOne

Print the objOne object (empty).

$ corosync-objctl objOne

objOne

Write two new keys to the objOne object.

$ corosync-objctl -w objOne.max=3000 objOne.min=100

Print the objOne object (with the two new keys).

$ corosync-objctl objOne

objOne.min=100

objOne.max=3000

Delete the objOne.min key

$ corosync-objctl -d objOne.min=100

Prove that is gone.

$ corosync-objctl objOne

objOne.max=3000

Delete the whole objOne object.

$ corosync-objctl -d objOne

Prove that is gone.

$ corosync-objctl objOne

confdb_keys(8), confdb_initialize(3)

Angus Salkeld