Forum Discussion
scott_sams_8256
Nimbostratus
Nimbostratustryin to understand the command structure for an incontrol command
i have been toying with the powershell/icontrol functions and wanted to do the following.
list a ram cache and evict a ram cache. the http profile with the name of "http" for this scenario.
i dont quite understand the syntax.
i think the command i want is
$ic.LocalLB.RAMCacheInformation
is that correct? when i enter this i get nothing back.
can someone help me just display the http profile and dump the cache on it?
thanks
- $ic.LocalLBRamCacheInformation is the interface containing all of the iControl methods. You need to reference the methods in that interface. You can find the docs here
http://devcentral.f5.com/wiki/default.aspx/iControl/LocalLB__RAMCacheInformation.html
Here's a quick script I whipped up showing how to query the entries in the RAM cache with the get_ramcache_entry() method.
http://devcentral.f5.com/wiki/default.aspx/iControl/PowerShellRAMCache.html
Hope that is enough to get you started. Post back here if you need help moving forward.
-Joe 
scott_sams_8256thanks, the script works great. i am by no means a programmer so i struggle with most of this. i will work to see if i can morph that into dumping the cache.
i appreciate this!
scott- No problem at all and I'm glad to help. Please let me know if you get stuck. I find it's better to give folks something to start with and then let them experiment a bit to get things working on their own. If you get stuck with the evicting of the cache, let me know and I'll give you some pointers. The key with PowerShell is allocating the structures properly with the New-Object cmdlet like I did in the referenced sample.
-Joe - scott_sams_8256i am stuck. and i got woken up 4 times last night to flush ram cache while dev was doing changes. i wonder should they adjust their cache timeouts or is this normal?
- Not sure how to answer that one. Typically, you decrease your cache times during maintenance windows but that will depend on how you are setup.
- scott_sams_8256gotcha. i am a network guy so this is outside my realm. i was wondering if they could do that for their maintenance page - have it expire every 60 seconds or so.
if you feel super motivated and wanted to show me how you do the dump cache with your quick skills it would be appreciated! - scott_sams_8256if anyone knows how to mod this to clear my entries, it would be appreciated. i am really in need of this ability.
also, what level of user is required to clear ram cache? administrator?
