hana_exporter

this is initial hana exporter to monitor hana database.

gather all hana info from its system table/views, all table/veiw under SYS schema with M_ as prefix are monitoring tables/views. so we just fetch data from SYS.M_* tables/views.

the exporter itself metrics exposed at /metrics, and the hana database metrics exposed at /hana

Usage

create a configuration hana.yml, which contains the credentials of hana instance.

databases:
    default:
        user: "user"
        pass: "password"
    192.168.100.237:30015:
        user: "SYSTEM"
        pass: "Password"

Note: This user should have role SAP_INTERNAL_HANA_SUPPORT to access schema SYS, Without the SAP_INTERNAL_HANA_SUPPORT role, this information can be selected only by the SYSTEM user.

grant  SAP_INTERNAL_HANA_SUPPORT  to user

then start hana-exporter via

hana_exporter --config.file=hana_exporter.yml

then we can get the metrics via

curl http://<hana-export host>:9460/hana?target=192.168.100.237:30015

NOTE: The usre configured at lest have select permission on schema SYS, all the collector will collect the info from tables/views under this schema.

prometheus job conf

add hana-exporter job conif as following

  - job_name: 'hana-exporter'

    # metrics_path defaults to '/metrics'
    metrics_path: /hana


    # scheme defaults to 'http'.

    static_configs:
    - targets:
       - 192.168.100.237:30015   
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: localhost:9460  ### the address of the hana-exporter address

Build

build the binary is pretty simple

git clone git@github.com:jenningsloy318/hana_exporter.git
cd hana_exporter
make build

or package it as rpm or deb

make package-release

then you package can be found in ./build

TO DO

also need to implement following metrics:

• metrics about user, user count, expired user, be expiring user, locked user from "SYS"."USERS"

Parameter Explanation

• --collect.sys_m_service_statistics, the metric hana_sys_m_service_statistics_status value and status mapping as following table:

  value	status
  0	NO
  1	YES
  2	UNKNOWN
  3	STARTING
  4	STOPPING

• --collect.sys_m_service_replication, the metric hana_sys_m_service_statistics_status value and status mapping as following table:

  value	status
  0	ERROR
  1	ACTIVE
  2	UNKNOWN
  3	INITIALIZING
  4	SYNCING