53. cdist-type__key_value(7)¶

Change property values in files

Steven Armstrong <steven-cdist--@--armstrong.cc>

53.1. DESCRIPTION¶

This cdist type allows you to change values in a key value based config file.

53.2. REQUIRED PARAMETERS¶

file: The file to operate on.
delimiter: The delimiter which separates the key from the value.

53.3. OPTIONAL PARAMETERS¶

state: present or absent, defaults to present. If present, sets the key to value, if absent, removes the key from the file.
key: The key to change. Defaults to object_id.
value: The value for the key. Optional if state=absent, required otherwise.
comment: If supplied, the value will be inserted before the line with the key, but only if the key or value must be changed. You need to ensure yourself that the line is prefixed with the correct comment sign. (for example # or ; or wathever ..)

53.4. BOOLEAN PARAMETERS¶

exact_delimiter: If supplied, treat additional whitespaces between key, delimiter and value as wrong value.

53.5. MESSAGES¶

remove: Removed existing key and value
insert: Added key and value
change: Changed value of existing key
create: A new line was inserted in a new file

53.6. EXAMPLES¶

# Set the maximum system user id
__key_value SYS_UID_MAX --file /etc/login.defs --value 666 --delimiter ' '

# Same with fancy id
__key_value my-fancy-id --file /etc/login.defs --key SYS_UID_MAX --value 666 \
   --delimiter ' '

# Enable packet forwarding
__key_value net.ipv4.ip_forward --file /etc/sysctl.conf --value 1 \
   --delimiter ' = ' --comment '# my linux kernel should act as a router'

# Remove existing key/value
__key_value LEGACY_KEY --file /etc/somefile --state absent --delimiter '='

53.7. MORE INFORMATION¶

This type try to handle as many values as possible, so it doesn’t use regexes. So you need to exactly specify the key and delimiter. Delimiter can be of any lenght.

53.8. SEE ALSO¶

cdist-type(7)