opsi manual opsi version 4.0.2 - opsi Download - uib

opsi manual opsi version 4.0.2
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• Then it is checked, whether there is enough local disk space available to cache the opsi-products. If there isn’t
enough disc space available, some old opsi-products will be deleted, which haven’t been used (synchronized) for a
long time.
• The local caching directory will be created if it doesn’t exist.
• Referring to the .files file, any old files and directories, which aren’t in use anymore, will be deleted from the local
opsi-product cache.
• Then the .files file will be processed in the following order.
– missing directories are created.
– missing files are transferred.
– existing files will be checked by size and MD5-sum and be synchronized again if necessary.
The synchronization results in an exact local copy of the opsi-product from the opsi-depot.
Note
On windows systems, no symbolic links will be created. Instead of links there will be copies of the link target.
When the opsi-product has completed successfully,
• the status of products_cached will turn to true (and stays true in case of a system restart, see: Section 7.3.6).
• a sync completed event will be triggered.
15.3.4 Configuring the opsi-product caching
The opsi-product caching is configured in the section [cache_service] of the opsiclientd.conf.
• product_cache_max_size (integer): The maximum size of the opsi-product cache in byte. This is important to
limit the disk space to be used by opsi-product caching.
• storage_dir (string): the path to the directory, in which the base directory depot for the opsi-product caching is
to be created.
Further configurations can be done event specific.
Within an event configuration section [event_] the following options are available:
• cache_products (boolean): if the value of this option is true, in case of the event the ProductCacheService
will start to cache opsi-products, for which a product action is set. If additionally the value of the option
use_cached_products is set to true, the further processing of this section will be suspended until the caching
of opsi-products is completed.
• cache_max_bandwidth (integer): the maximum bandwidth in byte/s to be used for caching. If this value is set to
0 or less, the bandwidth is unlimited.
• cache_dynamic_bandwidth (boolean): if the value of this option is set to true, the bandwidth will be adapted
dynamically. Therefore the network traffic at the network interface to the opsi-depot will be monitored. If any
traffic is detected, which is not caused by the opsi-product caching, the bandwidth for the caching will be sharply
reduced, to allow other processes to work at (almost) full speed. If the caching works at reduced bandwidth and
no more other network activity but the opsi-product caching is detected, the caching process will continue with
unlimited bandwidth. The value of cache_max_bandwidth will be used to limit the maximum dynamic bandwidth.
• use_cached_products (boolean): if the value of this option is set to true, the local opsi-product cache will be used
for processing product actions. If caching of the opsi-products is not completed, the processing of this event will
stop and return an error code.