feat(core): centreon_health script to gather various data

[adr-mo]

Pull Request Template

Description

Script that gathers various information useful for centreon diagnostic.
PR made from @Sims24 one (reworked a little bit)

Script to quickly gather an overall overview of centreon scope and parameters. Very helpfull when things goes bad. Easily extensible.

Cover following topics :

• rrd
• database
• module
• server
• systems
• broker
• logs

Centreon version : More complete for 2.8.x, but also manage 2.7.x (el6 and el7).

Offers following output format :

• MARKDOWN
• JSON
• TEXT
• DUMPER (debug perl)

Only prerequiste is perl binding for SSH C lib and centreon_plugins for Linux (SNMP) :

• el6

yum install libssh libssh-devel 
git clone https://github.com/garnier-quentin/perl-libssh
cd perl-libssh/
perl Makefile.PL
make && make install

• el7

yum install perl-Libssh-Session-0.3-1.el7.centos.x86_64

Sample output below (skip logs for the sake of clarity) :

[root@centreon-centos7 centreon]# su - centreon -c "/usr/share/centreon/bin/centreon_health --output-format MARKDOWN --skip-logs"

CENTREON_HEALTH TEXT OUTPUT

CENTREON OVERVIEW

• Centreon Version: 2.8.17
• Number of pollers: 2
• Number of hosts: 17
• Number of services: 139
• Number of metrics: 318
• Number of modules: 4
• Number of plugin-packs: 35
• Number of recurrent downtimes: 0

AVERAGE METRICS

• Host / poller (avg): 8
• Service / poller (avg): 69
• Service / host (avg): 8
• Metrics / service (avg): 2

RRD INFORMATIONS

• RRD not updated since more than 180 days: 0
• RRD written during last 5 five minutes: 33
• RRD files Count/Size in /var/lib/centreon/metrics/ directory: 251/95M
• RRD files Count/Size in /var/lib/centreon/status/ directory: 140/47M

DATABASES INFORMATIONS

Databases size

• Size of centreon_storage database: 856M
• Size of centreon database: 8M

Tables size (centreon_storage db)

• Size of log_archive_host table: 29M
• Size of downtimes table: 96K
• Size of data_bin table: 687M
• Size of log_archive_service table: 36M
• Size of logs table: 100M

Partitioning check

• Last partition date for log_archive_host table: 01/14/2018 00:00:00
• Last partition date for data_bin table: 01/14/2018 00:00:00
• Last partition date for log_archive_service table: 01/14/2018 00:00:00
• Last partition date for logs table: 01/14/2018 00:00:00

SQL Engine tuning variables

• Variable innodb_file_per_table = ON
• Variable join_buffer_size = 4M
• Variable key_buffer_size = 256M
• Variable max_allowed_packet = 64M
• Variable open_files_limit = 32000
• Variable read_buffer_size = 512K
• Variable read_only = OFF
• Variable read_rnd_buffer_size = 256K
• Variable sort_buffer_size = 32M

MODULE INFORMATIONS

• Module Centreon License Manager is installed. (Author: Centreon # Codename: centreon-license-manager # Version: 1.0.1)
• Module Centreon Plugin Pack Manager is installed. (Author: Centreon # Codename: centreon-pp-manager # Version: 2.2.0)
• Module Centreon Open Tickets is installed. (Author: Centreon Team # Codename: centreon-open-tickets # Version: 1.2.0)
• Module Centreon Auto Discovery is installed. (Author: Centreon # Codename: centreon-autodiscovery-server # Version: 2.3.0)

CENTREON NODES INFORMATIONS

Central

Identity:

• Engine (version): Centreon Engine (1.7.2)
• IP Address (SSH port): 127.0.0.1 (22)
• Localhost: YES
• Running: YES
• Start time: 11/09/2017 16:49:33
• Last alive: 01/04/2018 09:16:51
• Uptime: 1M 3w 4d 5h 58m 15s
• Count Hosts/Services - (Last command check): 13/114 - (01/04/2018 09:16:50)

Engine stats:

• Buffer Usage(In_Use): 0
• Buffer Usage(Max_Used): 3
• Buffer Usage(Total_Available): 4096
• Host Actively Checked(Last_15_minutes): 13
• Host Actively Checked(Last_5_minutes): 13
• Host Actively Checked(Last_hour): 13
• Host Actively Checked(Last_minute): 1
• Host Check Execution Time(Average): 1.468
• Host Check Execution Time(Max): 10.002
• Host Check Execution Time(Min): 0.000
• Host Check Latency(Average): 0.082
• Host Check Latency(Max): 0.175
• Host Check Latency(Min): 0.000
• Hosts Status(Down): 2
• Hosts Status(Unreachable): 0
• Hosts Status(Up): 12
• Service Actively Checked(Last_15_minutes): 98
• Service Actively Checked(Last_5_minutes): 78
• Service Actively Checked(Last_hour): 113
• Service Actively Checked(Last_minute): 7
• Service Check Execution Time(Average): 7.109
• Service Check Execution Time(Max): 60.155
• Service Check Execution Time(Min): 0.003
• Service Check Latency(Average): 0.092
• Service Check Latency(Max): 0.208
• Service Check Latency(Min): 0.002
• Services Status(Critical): 3
• Services Status(OK): 63
• Services Status(Unknown): 47
• Services Status(Warning): 1

Broker stats:

File: central-broker-master-stats.json

• Version: 3.0.8
• State: connected
• Event proecessing speed 2.9
• Queued events: 0
• Last connection attempts: 12/30/2017 13:43:41
• Last connection success: 12/30/2017 13:43:41

File: central-module-master-stats.json

• Version: 3.0.8
• State: connected
• Event proecessing speed 1.1875
• Queued events: 540
• Last connection attempts: 12/30/2017 13:44:40
• Last connection success: 12/30/2017 13:44:40

File: central-rrd-master-stats.json

• Version: 3.0.8
• State: listening
• Event proecessing speed 0
• Queued events: 0
• Last connection attempts: -1
• Last connection success: -1

System stats:

• CPU => OK: CPU Usage: Wait 0.84 %, Guest 0.00 %, User 4.88 %, Soft Irq 0.02 %, Kernel 0.00 %, Interrupt 0.00 %, Guest Nice 0.00 %, Idle 93.30 %, Steal 0.00 %, System 0.96 %, Nice 0.00 % |
• LOAD => OK: Load average: 0.00, 0.05, 0.08 |
• MEMORY => OK: Ram Total: 1.80 GB, Used (-buffers/cache): 799.33 MB (43.44%), Buffer: 0.00 B, Cached: 835.89 MB, Shared: 96.30 MB |
• SWAP => OK: Swap Total: 600.00 MB Used: 43.91 MB (7.32%) Free: 556.08 MB (92.68%) |
• STORAGE => OK: All storages are ok |
  Storage '/' Usage Total: 1.99 GB Used: 1.15 GB (57.88%) Free: 858.37 MB (42.12%)
  Storage '/usr' Usage Total: 3.99 GB Used: 2.67 GB (66.81%) Free: 1.32 GB (33.19%)
  Storage '/var/lib/mysql' Usage Total: 3.99 GB Used: 3.00 GB (75.14%) Free: 1015.75 MB (24.86%)
  Storage '/tmp' Usage Total: 1016.66 MB Used: 258.26 MB (25.40%) Free: 758.40 MB (74.60%)

Poller

Identity:

• Engine (version): Centreon Engine (1.7.2)
• IP Address (SSH port): 10.30.2.66 (22)
• Localhost: NO
• Running: YES
• Start time: 10/03/2017 17:14:17
• Last alive: 01/04/2018 09:16:48
• Uptime: 3M 1d 9h 35m 22s
• Count Hosts/Services - (Last command check): 4/25 - (01/04/2018 09:16:48)

Engine stats:

• Buffer Usage(In_Use): 0
• Buffer Usage(Max_Used): 0
• Buffer Usage(Total_Available): 4096
• Host Actively Checked(Last_15_minutes): 3
• Host Actively Checked(Last_5_minutes): 2
• Host Actively Checked(Last_hour): 3
• Host Actively Checked(Last_minute): 0
• Host Check Execution Time(Average): 0.057
• Host Check Execution Time(Max): 0.085
• Host Check Execution Time(Min): 0.005
• Host Check Latency(Average): 0.143
• Host Check Latency(Max): 0.182
• Host Check Latency(Min): 0.073
• Hosts Status(Down): 0
• Hosts Status(Unreachable): 0
• Hosts Status(Up): 3
• Service Actively Checked(Last_15_minutes): 13
• Service Actively Checked(Last_5_minutes): 10
• Service Actively Checked(Last_hour): 13
• Service Actively Checked(Last_minute): 0
• Service Check Execution Time(Average): 0.153
• Service Check Execution Time(Max): 0.305
• Service Check Execution Time(Min): 0.020
• Service Check Latency(Average): 0.084
• Service Check Latency(Max): 0.192
• Service Check Latency(Min): 0.002
• Services Status(Critical): 0
• Services Status(OK): 7
• Services Status(Unknown): 6
• Services Status(Warning): 0

Broker stats:

File: poller-module-stats.json

• Version: 3.0.7
• State: connected
• Event proecessing speed 0.5
• Queued events: 392
• Last connection attempts: 12/30/2017 13:44:10
• Last connection success: 12/30/2017 13:44:10

System stats:

• CPU => OK: CPU Usage: Wait 0.00 %, Guest 0.00 %, User 1.26 %, Soft Irq 0.01 %, Kernel 0.00 %, Interrupt 0.00 %, Guest Nice 0.00 %, Idle 98.42 %, Steal 0.00 %, System 0.31 %, Nice 0.00 % |
• LOAD => OK: Load average: 0.01, 0.05, 0.05 |
• MEMORY => OK: Ram Total: 1.80 GB, Used (-buffers/cache): 299.58 MB (16.28%), Buffer: 948.00 KB, Cached: 502.29 MB, Shared: 96.45 MB |
• SWAP => OK: Swap Total: 820.00 MB Used: 0.00 B (0.00%) Free: 820.00 MB (100.00%) |
• STORAGE => OK: Storage '/' Total: 6.19 GB Used: 2.09 GB (33.87%) Free: 4.09 GB (66.13%) |
  Storage '/' Total: 6.19 GB Used: 2.09 GB (33.87%) Free: 4.09 GB (66.13%)

Type of change

• New functionality (non-breaking change)

Target serie

• 18.10.x
• 19.04.x (master)

How this pull request can be tested ?

Execute the script and check that information returned are correct.

Checklist

Community contributors & Centreon team

• I followed the coding style guidelines provided by Centreon
• I have commented my code, especially new classes, functions or any legacy code modified. (docblock)
• I have commented my code, especially hard-to-understand areas of the PR.
• [] I have made corresponding changes to the documentation.
•  I have rebased my development branch on the base branch (master, maintenance).

Centreon team only

• I have made sure that the unit tests related to the story are successful.
• I have made sure that unit tests covers 80% of the code written for the story.
• I have made sure that acceptance tests related to the story are successful (local and CI)