Disclaimer

Python support is experimental and implementation may change in the future

Every module should be compatible with python2 and python3. All third party libraries should be installed system-wide or in python_modules directory. Module configurations are written in YAML and pyYAML is required.

Every configuration file must have one of two formats:

• Configuration for only one job:

update_every : 2 # update frequency
retries      : 1 # how many failures in update() is tolerated
priority     : 20000 # where it is shown on dashboard

other_var1   : bla  # variables passed to module
other_var2   : alb

• Configuration for many jobs (ex. mysql):

# module defaults:
update_every : 2
retries      : 1
priority     : 20000

local:  # job name
  update_every : 5 # job update frequency
  other_var1   : some_val # module specific variable

other_job: 
  priority     : 5 # job position on dashboard
  retries      : 20 # job retries
  other_var2   : val # module specific variable

update_every, retries, and priority are always optional.

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The following python.d modules are supported:

apache

This module will monitor one or more apache servers depending on configuration.

Requirements:

• apache with enabled mod_status

It produces following charts:

1. Requests in requests/s

• requests

2. Connections

• connections

3. Async Connections

• keepalive
• closing
• writing

4. Bandwidth in kilobytes/s

• sent

5. Workers

• idle
• busy

6. Lifetime Avg. Requests/s in requests/s

• requests_sec

7. Lifetime Avg. Bandwidth/s in kilobytes/s

• size_sec

8. Lifetime Avg. Response Size in bytes/request

• size_req

configuration

Needs only url to server's server-status?auto

Here is an example for 2 servers:

update_every : 10
priority     : 90100

local:
  url      : 'http://localhost/server-status?auto'
  retries  : 20

remote:
  url          : 'http://www.apache.org/server-status?auto'
  update_every : 5
  retries      : 4

Without configuration, module attempts to connect to http://localhost/server-status?auto

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apache_cache

Module monitors apache mod_cache log and produces only one chart:

cached responses in percent cached

• hit
• miss
• other

configuration

Sample:

update_every : 10
priority     : 120000
retries      : 5
log_path     : '/var/log/apache2/cache.log'

If no configuration is given, module will attempt to read log file at /var/log/apache2/cache.log

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hddtemp

Module monitors disk temperatures from one or more hddtemp daemons

Requirement: Running hddtemp in daemonized mode with access on tcp port

It produces one chart Temperature with dynamic number of dimensions (one per disk)

configuration

Sample:

update_every: 3
host: "127.0.0.1"
port: 7634

If no configuration is given, module will attempt to connect to hddtemp daemon on 127.0.0.1:7634 address

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mysql

Module monitors one or more mysql servers

Requirements:

• python library MySQLdb (faster) or PyMySQL (slower)

It will produce following charts (if data is available):

1. Bandwidth in kbps

• in
• out

2. Queries in queries/sec

• queries
• questions
• slow queries

3. Operations in operations/sec

• opened tables
• flush
• commit
• delete
• prepare
• read first
• read key
• read next
• read prev
• read random
• read random next
• rollback
• save point
• update
• write

4. Table Locks in locks/sec

• immediate
• waited

5. Select Issues in issues/sec

• full join
• full range join
• range
• range check
• scan

6. Sort Issues in issues/sec

• merge passes
• range
• scan

configuration

You can provide, per server, the following:

1. username which have access to database (deafults to 'root')
2. password (defaults to none)
3. mysql my.cnf configuration file
4. mysql socket (optional)
5. mysql host (ip or hostname)
6. mysql port (defaults to 3306)

Here is an example for 3 servers:

update_every : 10
priority     : 90100
retries      : 5

local:
  'my.cnf'   : '/etc/mysql/my.cnf'
  priority   : 90000

local_2:
  user     : 'root'
  password : 'blablablabla'
  socket   : '/var/run/mysqld/mysqld.sock'
  update_every : 1

remote:
  user     : 'admin'
  password : 'bla'
  host     : 'example.org'
  port     : 9000
  retries  : 20

If no configuration is given, module will attempt to connect to mysql server via unix socket at /var/run/mysqld/mysqld.sock without password and with username root

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nginx

This module will monitor one or more nginx servers depending on configuration.

Requirements:

• nginx with configured stub_status

It produces following charts:

1. Active Connections

• active

2. Requests in requests/s

• requests

3. Active Connections by Status

• reading
• writing
• waiting

4. Connections Rate in connections/s

• accepts
• handled

configuration

Needs only url to server's stub_status

Here is an example for local server:

update_every : 10
priority     : 90100

local:
  url     : 'http://localhost/stub_status'
  retries : 10

Without configuration, module attempts to connect to http://localhost/stub_status

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phpfpm

This module will monitor one or more php-fpm instances depending on configuration.

Requirements:

• php-fpm with enabled status page
• access to status page via web server

It produces following charts:

1. Active Connections

• active
• maxActive
• idle

2. Requests in requests/s

• requests

3. Performance

• reached
• slow

configuration

Needs only url to server's status

Here is an example for local instance:

update_every : 3
priority     : 90100

local:
  url     : 'http://localhost/status'
  retries : 10

Without configuration, module attempts to connect to http://localhost/status

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squid

This module will monitor one or more squid instances depending on configuration.

It produces following charts:

1. Client Bandwidth in kilobits/s

• in
• out
• hits

2. Client Requests in requests/s

• requests
• hits
• errors

3. Server Bandwidth in kilobits/s

• in
• out

4. Server Requests in requests/s

• requests
• errors

configuration

priority     : 50000

local:
  request : 'cache_object://localhost:3128/counters'
  host    : 'localhost'
  port    : 3128

Without any configuration module will try to autodetect where squid presents its counters data

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