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Relocate Trisul Database

There are two major places where Trisul per-context data is stored.

  1. On each probe - the pcaps, runtime data like extracted files, etc
  2. On the hub - the main streaming metrics DB

By default - on both these nodes the root directory under which these are stored are /usr/local/var . Use the relocate CLI command to move this to a different volume.

Relocate Context​

Run on each node

The relocate context command must be on a node-by-node basis.

You only need to run the relocate command on the nodes (probes and hub) that you want to. Follow these steps.

Relocate on Hub​

Use the trisulctl_hub relocate context command.

Say you want to relocate the default context database to /nsm/trisuldata ; you can run the following.

trisul_hub(domain0)> relocate context  domain0 hub0 default
** Relocate stopping context 
   + config0              stopped  success.context0
   + hub0                 stopped  Context is already stopped
   + probe0               stopped  Context is already stopped
-----------------------------------------------------------------------------
** Relocate context : Move backend databases to another volume 
** Current location details for context [context0@hub0/domain0]

Current DB Root is at              : /usr/local/var
Current size                       : 5.67 MB
-----------------------------------------------------------------------------
Enter new location (enter to quit) :  /nsm/trisuldata

The tool will then run some checks and ask you for a confirmation.

  • Once the relocation is done. You can restart the context using start context default

Relocate on Each Probe​

Use the trisulctl_probe relocate context command on each probe.

Say you want to relocate the default context database to /nsm/trisuldata ; you can run the following.

    trisulctl_probe
    > relocate context domain0 probe0 default
    ..
    ..
    Enter new location (enter to quit) : /nsm/trisuldata