zabbix_export:
  version: '6.0'
  date: '2021-11-21T22:04:12Z'
  groups:
    -
      uuid: b1a65eeba3cc4c9fb198e8f18f433839
      name: 'Templates/Operating Systems'
  templates:
    -
      uuid: a81a5e460d8e420baab75a080d5f2375
      template: 'LVM Cache'
      name: 'LVM Cache'
      description: |
        ## Description
        
        LVM cache monitoring Details in kernel documentation https://www.kernel.org/doc/Documentation/device-mapper/cache.txt
        
        ## Overview
        
        LVM Cache monitoring template.
        ==============================
        
        
         allows you to evaluate the efficiency of caching by the built-in dm-cache mechanism.
        
        
        **What do these values mean?**
        ------------------------------
        
        
        Details about monitored values described in Linux Kernel Documentation <https://www.kernel.org/doc/Documentation/device-mapper/cache.txt>
        
        
        **Usage**
        ---------
        
        
        1. Put file lvmcache.conf to /etc/zabbix/zabbix\_agent.d/
        2. Put file sudoers\_lvmcache to /etc/sudoers.d/ (you need `sudo` program installed)
        3. Put file vmcache to /etc/zabbix/scripts/. Then you can execut this file and test. This script produces JSON output.
        4. Import the [`lvmcache_template.xml`](https://github.com/pavlozt/somezabbixtemplates/blob/master/lvmcache/lvmcache_template.xml) into your Zabbix server (click on the `Raw` button to download)
        5. Add the template to your host
        6. Check if new data arrives at Last Data section and Graphs.
        
        
        This script assumes that you have **ONLY ONE caching device** and polls the first device. Therefore, it does not require configuration and specifying a device name. Working with disks implies elevated privileges and therefore you need do not forget about sudoers\_zabbix\_lvmcache file.
        
        
        **Commands for debugging**
        --------------------------
        
        
        * dmsetup status
        * /etc/zabbix/scripts/lvmcache
        * zabbix\_get -s 192.168.1.1 -k 'lvmcache.raw' (on zabbix server or zabbix proxy)
        
        
        ## Author
        
        pavlozt
        
        
      groups:
        -
          name: 'Templates/Operating Systems'
      items:
        -
          uuid: 6245993545644076a677d67342856d8e
          name: demotions
          type: DEPENDENT
          key: lvmcache.demotions
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.demotions
            -
              type: SIMPLE_CHANGE
              parameters:
                - ''
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: c4fc7c3dd5f7484fb1c39dffed61ce57
          name: dirty
          type: DEPENDENT
          key: lvmcache.dirty
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.dirty
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 99c56641bbdc4250b6acd19e1189640b
          name: 'LVM meta cache usage'
          type: CALCULATED
          key: lvmcache.metausage
          delay: 3m
          history: 30d
          value_type: FLOAT
          params: last(//lvmcache.used_metadata_blocks)/last(//lvmcache.total_metadata_blocks)
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 4a297395cc364b35b97c9047a992be22
          name: promotions
          type: DEPENDENT
          key: lvmcache.promotions
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.promotions
            -
              type: SIMPLE_CHANGE
              parameters:
                - ''
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 2d4c600613d24cac838f6e514dc4c434
          name: 'lvm raw data'
          key: lvmcache.raw
          delay: 3m
          history: '0'
          trends: '0'
          value_type: TEXT
          preprocessing:
            -
              type: CHECK_JSON_ERROR
              parameters:
                - $.values
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 9cd1a4801c8c4d29a954ab9f1ad061ea
          name: read_hits
          type: DEPENDENT
          key: lvmcache.read_hits
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.read_hits
            -
              type: SIMPLE_CHANGE
              parameters:
                - ''
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 7f3f12b6642a4afdb91b10ed522144f2
          name: total_cache_blocks
          type: DEPENDENT
          key: lvmcache.total_cache_blocks
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.total_cache_blocks
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 9f427a2388e24f9ba510d28160db20b5
          name: total_metadata_blocks
          type: DEPENDENT
          key: lvmcache.total_metadata_blocks
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.total_metadata_blocks
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 18e54b4030194ce9a69d28204d403fc0
          name: 'LVM data cache usage'
          type: CALCULATED
          key: lvmcache.usage
          delay: 3m
          history: 30d
          value_type: FLOAT
          params: last(//lvmcache.used_cache_blocks)/last(//lvmcache.total_cache_blocks)
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 7589e8fc80734474ab47b53ebfc1ce37
          name: used_cache_blocks
          type: DEPENDENT
          key: lvmcache.used_cache_blocks
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.used_cache_blocks
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 5ab792a5426349d3b0da44850f78d11b
          name: used_metadata_blocks
          type: DEPENDENT
          key: lvmcache.used_metadata_blocks
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.used_metadata_blocks
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 122659ef11314ff1bfb6ef6b8c5151ac
          name: write_hits
          type: DEPENDENT
          key: lvmcache.write_hits
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.write_hits
            -
              type: SIMPLE_CHANGE
              parameters:
                - ''
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
        -
          uuid: 8b38f882decb4f79ac009aeac611c005
          name: write_misses
          type: DEPENDENT
          key: lvmcache.write_misses
          delay: '0'
          history: 30d
          preprocessing:
            -
              type: JSONPATH
              parameters:
                - $.write_misses
            -
              type: SIMPLE_CHANGE
              parameters:
                - ''
          master_item:
            key: lvmcache.raw
          tags:
            -
              tag: Application
              value: 'LVM Cache'
  graphs:
    -
      uuid: 4a22b6726cc840a28208481b598e34ad
      name: 'LVM Cache efficiency'
      graph_items:
        -
          color: 1A7C11
          item:
            host: 'LVM Cache'
            key: lvmcache.read_hits
        -
          sortorder: '1'
          color: F63100
          item:
            host: 'LVM Cache'
            key: lvmcache.write_hits
        -
          sortorder: '2'
          color: 2774A4
          item:
            host: 'LVM Cache'
            key: lvmcache.write_misses
    -
      uuid: e5ed1f0742444dbc92e22b394dbd4aa0
      name: 'LVM Cache usage'
      show_work_period: 'NO'
      show_triggers: 'NO'
      graph_items:
        -
          color: F63100
          item:
            host: 'LVM Cache'
            key: lvmcache.usage
        -
          sortorder: '1'
          color: 2774A4
          item:
            host: 'LVM Cache'
            key: lvmcache.metausage