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### Couchbase Monitoring
### Overview
Couchbase Server is an open source, distributed, No SQL document-oriented database. It exposes a fast key-value store with managed cache for sub-millisecond data operations. Couchbase Server is specialized to provide low-latency data management for large-scale interactive web, mobile, and IoT applications.
### Monitoring Capabilities
#### Couchbase Cluster Stats
| Graph | Graph Description |
| --- | --- |
| Couchbase RAM Total (GB) | Total RAM available to cluster in Gigabytes. |
| Couchbase RAM Quota Total (GB) | RAM quota total for the couch base servers in Gigabytes. |
| Couchbase RAM Quota Used (GB) | RAM quota used by the couch base servers in Gigabytes. |
| Couchbase RAM Used (GB) | RAM used across the cluster in Gigabytes. |
| Couchbase RAM Used By Data (GB) | RAM used for the data in the cluster in Gigabytes. |
| Couchbase RAM Quota Used Per Node (GB) | RAM quota used by the cluster per node in Gigabytes. |
| Couchbase RAM Quota Total Per Node (GB) | RAM quota total for the cluster per node in Gigabytes. |
| Couchbase HDD Total (GB) | Total harddrive space available to cluster in Gigabytes. |
| Couchbase HDD Quota Total (GB) | Harddrive quota total for the couch base servers in Gigabytes. |
| Couchbase HDD Used (GB) | Harddrive space used by the couch base servers in Gigabytes. |
| Couchbase HDD Used By Data (GB) | Harddrive used for the data in the cluster in Gigabytes. |
| Couchbase HDD Free (GB) | Free harddrive space in the cluster in Gigabytes. |
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#### Couchbase Node Stats
| Couchbase CPU Utilization (PCT) | Percentage of CPU in use across all available cores on the server. |
| Couchbase Swap Total (MB) | Total swap size allocated in Megabytes. |
| Couchbase Swap Used (MB) | Amount of swap space used in Megabytes. |
| Couchbase Memory Total (MB) | Total memory available to the node in Megabytes. |
| Couchbase Memory Free (MB) | Amount of memory free for the node in Megabytes. |
| Couchbase Cmd Get/Sec | Number of get commands per second. |
| Couchbase Docs Actual Disk Size (MB) | Amount of disk space used by Couch docs in Megabytes. |
| Couchbase Docs Data Size (MB) | Data size of couch documents associated with a node. |
| Couchbase Views Actual Disk Size (MB) | Amount of disk space occupied by Couch views in Megabytes. |
| Couchbase Views Data Size (MB) | Size of object data for Couch views in Megabytes. |
| Couchbase Current Items | Number of current items associated with node. |
| Couchbase Current Items Total | Total number of items associated with node. |
| Couchbase Ep Engine Background Fetched | Number of disk fetches performed since server was started. |
| Couchbase Get Hits/Sec | Number of get hits per second. |
| Couchbase Memory Used (MB) | Memory used by the node in Megabytes. |
| Couchbase Operations/Sec | Number of operations performed on Couchbase per second. |
| Couchbase Vb Replica Current Items | Number of items/documents that are replicas. |
| Couchbase Uptime (Sec) | Time during which the node was in operation in Seconds. |
| Couchbase Memcached Memory Reserved (MB) | Amount of memcached memory reserved in Megabytes. |
| Couchbase Memcached Memory Allocated (MB) | Amount of memcached memory allocated in Megabytes. |
#### Couchbase Bucket Stats
| Couchbase Ram (MB) | Amount of RAM used by the bucket in Megabytes. |
| Couchbase Raw RAM (MB) | Amount of raw RAM used by the bucket in Megabytes. |
| Couchbase Quota Used (Pct) | Percentage of RAM used (for active objects) against the configure bucket size. |
| Couchbase Operations/Sec | Number of operations per second to bucket. |
| Couchbase Disk Fetches | Number of disk fetches. |
| Couchbase Item Count | Number of unique items associated with bucket. |
| Couchbase Disk Used (MB) | Amount of disk used in Megabytes. |
| Couchbase Data Used (MB) | Size of user data within buckets of the specified state that are resident in RAM in Megabytes. |
| Couchbase Memory Used (MB) | Amount of memory used by the bucket in Megabytes. |
| Couchbase Total Disk Size (MB) | Total size of disk of all data and view files for bucket in Megabytes. |
| Couchbase Docs Fragmentation (Pct) | Docs fragmentation in percentage, it describes how much fragmented data there is to be compacted compared to real data for the data files in bucket. |
| Couchbase Views Fragmentation (Pct) | Views fragmentation in percentage, it describes how much fragmented data there is to be compacted compared to real data for the view index files in bucket. |
| Couchbase Cache Miss Ratio (Pct) | Percentage of reads per second to bucket from disk as opposed to RAM. |
| Couchbase Gets/Sec | Number of reads (get operations) per second from bucket. |
| Couchbase Sets/Sec | Number of write (set operations) per second to bucket. |
| Couchbase Deletes/Sec | Number of delete operations per second for bucket. |
| Couchbase Compare And Swap (CAS) Operations/Sec | Number of Operations with CAS id per second for bucket. |
| Couchbase Active Docs Resident (Pct) | Percentage of active item cached in RAM for bucket. |
| Couchbase Temp Out Of Memory/Sec | Number of back-offs sent per second to client SDKs due to out of memory situations from bucket. |
| Couchbase Low Water Mark (GB) | Low water mark for auto-evictions in Gigabytes. |
| Couchbase High Water Mark (GB) | High water mark fot auto-evictions in Gigabytes. |
| Couchbase Disk Creates/Sec | Number of new items create on disk per second for bucket. |
| Couchbase Disk Updates/Sec | Number of items updated on disk per second for bucket. |
| Couchbase Disk Reads/Sec | Number of reads per second from disk for bucket. |
| Couchbase Disk Write Queue Size | Number of items waiting to be written to disk in bucket. |
| Couchbase Docs Data Size (MB) | Size of active data in bucket in Megabytes. |
| Couchbase Docs Total Disk Size (MB) | Size of all data files for bucket, including the data itself, metadata and temporary files in Megabytes. |
| Couchbase Views Data Size (KB) | Size of active data on for all the indexes in bucket in Kilobytes. |
| Couchbase Views Total Data Size (KB) | Size of all active data in all the indexes for bucket on disk in Kilobytes. |
| Couchbase View Reads/Sec | All the view reads per second for all design documents including scatter gather. |
| Couchbase Average Disk Update Time (ms) | Average disk update time in Milliseconds. |
| Couchbase Average Disk Commit Time (Sec) | Average disk commit time in seconds. |
| Couchbase Average Background Wait Time (ms) | Average background fetch time in miliseconds. |
| Couchbase Incoming XDCR Operations/Sec | Incoming XDCR operations per second for bucket. |
| Couchbase Intra-Replication Queue | Number of items remaining to be sent to be consumer in bucket. |
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### Docker-based Applications Monitoring
#### Docker Info Stats
These are stats about the container – in various states – running, paused, stopped. This also provides insight into total number of containers. This stat is on Server level.
| Graph Name | Description |
| Total Containers | Total number of containers. |
| Running Containers | Total number of running containers. |
| Paused Containers | Total number of paused containers. |
| Stopped Containers | Total number of stopped containers. |
#### Docker System Stats
This stat monitors the system stats of every container installed. These stats include CPU usage, System usage etc.
| CPU Usage (Pct) | CPU usage in percentage. |
| Memory Usage (GB) | Memory usage in GB. |
| Memory Limit (GB) | Max memory available in GB. |
| Memory Usage (Pct) | Memory usage in Percentage. |
| Received Throughput (GB) | Received Network Throughput in GB. |
| Transmitted Throughput (GB) | Transmitted Network Throughput in GB. |
| Disk Read (GB) | Disks read in GB. |
| Disk Write (GB) | Disks write in GB. |
| Uptime (Days) | Total time the docker container has been running in days. |
#### Docker Network Stats
This monitors the network stats on each interface for every container.
| Received Throughput (KBps) | Received throughput in KiloBytes per second. |
| Received Pkts OK/Sec | Error Free Packets received per Sec. |
| Received Pkts Error/Sec | Damaged Packets received per Sec. |
| Received Pkts Dropped/Sec | Dropped Packets received per Sec. |
| Received Pkts Fifo/Sec | fifo Packets received per Sec. |
| Received Pkts Frame/Sec | Frame Packets received per Sec. |
| Received Pkts Compressed/Sec | Compressed Packets received per Sec. |
| Received Pkts Multicast/Sec | Multicast Packets received per Sec. |
| Transmitted Throughput (KBps) | Transmitted throughput in KiloBytes per second. |
| Transmitted Pkts OK/Sec | Transmitted Error Free Packets per Sec. |
| Transmitted Pkts Errror/Sec | Transmitted Damaged Packets per Sec. |
| Transmitted Pkts Dropped/Sec | Transmitted Dropped Packets per Sec. |
| Transmitted Pkts Fifo/Sec | Transmitted fifo Packets per Sec. |
| Transmitted Pkts Colls/Sec | Transmitted collision Packets per Sec. |
| Transmitted Pkts Carrier/Sec | Transmitted carrier Packets per Sec. |
| Transmitted Pkts Compressed/Sec | Transmitted compressed Packets per Sec. |
#### Docker IO Stats
It monitors the stats related to the input / output data.
| Disk Read Size (MB/s) | Size of disk reads per second in MB by container. |
| Disk Write Size (MB/s) | Size of disk writes per second in MB by container. |
| Disk Reads/sec | Number of disk reads per second by container. |
| Disk Writes/sec | Number of disk writes per second by container. |
| Total Data Read from Disk (MB) | Total data read from disk in MB. |
| Total Data Written to Disk (MB) | Total data written to disk in MB |
#### Docker CPU Stats
This stat monitors the CPU, for example: user CPU time, System CPU time etc.
| Total User CPU Time(Sec) | Time spent (in seconds) by tasks of the container in user mode. |
| Total System CPU Time(Sec) | Time spent (in seconds) by tasks of the container in kernel mode. |
| Total Elapsed Enforcement Intervals | Number of enforcement intervals that have elapsed. |
| Total Throttled Count | Number of times, task in this container has been throttled. |
| Total Throttled Time (Sec) | Total time (in seconds) for which tasks in container have been throttled. |
#### Docker Memory Stats
This monitors stats related to memory, for example, cache memory size, write back size etc.
| Cache Memory Size (MB) | Page cache memory. |
| Resident Set Size (MB) | RSS(anonymous and swap cache memory) in MB. |
| Mapped File Size (MB) | Mapped file (includes tmpfs/shmem) in MB. |
| Writeback Size (MB) | Writebacks in MB. |
| Total Page Ins | Total number of pages paged in. |
| Total Page Outs | Total number of pages paged out. |
| Total Page Faults | Total number of page faults |