Ansible Role: cortex

Description

Deploy cortex using ansible.

Requirements

• Ansible >= 2.7 (It might work on previous versions, but we cannot guarantee it)

Role Variables

All variables which can be overridden are stored in defaults/main.yml file as well as in table below.

Name	Default Value	Description
cortex_all_in_one	true	Setup Cortex in all-in-one binary mode.
cortex_services	{}	Cortex services configurations.
cortex_web_listen_address	"0.0.0.0:9009"	Address on which cortex will listen
cortex_binary_local_dir	""	Allows to use local packages instead of ones distributed on github. As parameter it takes a directory where cortex binaries are stored on host on which ansible is ran. This overrides cortex_version parameter
cortex_interface	"{{ ansible_default_ipv4.interface }}"	Network adapter that cortex will be using
cortex_config_dir	"/etc/cortex"	Default directory for the cortex config
cortex_db_dir	"/var/lib/cortex"	Path to the directory of the Cortex database
cortex_limit_nofile	10240	Number of File Descriptors allowed for Cortex processes
cortex_system_user	"cortex"	Default Cortex user
cortex_system_group	"cortex"	Default Cortex group
cortex_version	1.7.0	The cortex package version
cortex_auth_enabled	"false"	Enables of disables the Cortex authentication
cortex_env_variables	{}	Configure Cortex environment variables.
cortex_alertmanager	{}	Cortex alertmanager. Compatible with official configuration
cortex_api	{}	Cortex api. Compatible with official configuration
cortex_blocks_storage	From block storage example	Cortex blocks storage. Compatible with official configuration
cortex_chunck_store	{}	Cortex chunck store. Compatible with official configuration
cortex_compactor	From block storage example	Cortex compactor. Compatible with official configuration
cortex_configs	{}	Cortex configs. Compatible with official configuration
cortex_distributor	From block storage example	Cortex distributor. Compatible with official configuration
cortex_flusher	{}	Cortex flusher. Compatible with official configuration
cortex_frontend_worker	From block storage example	Cortex frontend worker. Compatible with official configuration
cortex_frontend	{}	Cortex frontend. Compatible with official configuration
cortex_ingester_client	From block storage example	Cortex ingester client. Compatible with official configuration
cortex_ingester	From block storage example	Cortex ingester. Compatible with official configuration
cortex_limits	{}	Cortex limits. Compatible with official configuration
cortex_memberlist	{}	Cortex memberlist. Compatible with official configuration
cortex_prealloc	{}	Cortex prealloc. Compatible with official configuration
cortex_purger	{}	Cortex purger. Compatible with official configuration
cortex_querier	{}	Cortex querier. Compatible with official configuration
cortex_query_range	{}	Cortex query range. Compatible with official configuration
cortex_ruler	From block storage example	Cortex ruler. Compatible with official configuration
cortex_runtime_config	{}	Cortex runtime config. Compatible with official configuration
cortex_schema	{}	Cortex schema. Compatible with official configuration
cortex_server	From block storage example	Cortex server. Compatible with official configuration
cortex_storage	From block storage example	Cortex storage. Compatible with official configuration
cortex_store_gateway	{}	Cortex store gateway. Compatible with official configuration
cortex_table_manager	{}	Cortex table manager. Compatible with official configuration

Example

Playbook

Use it in a playbook as follows:

- hosts: all
  roles:
    - cloudalchemy.cortex

Services mode

You can run the different Cortex modules as separate services by setting cortex_services as a module:config map and cortex_all_in_one to false.

- hosts: all
  roles:
    - cloudalchemy.cortex
  vars:
    cortex_all_in_one: false
    cortex_services:
      ingester:
        server:
            http_listen_port: 9009
        ingester:
            lifecycler:
              join_after: 0
              min_ready_duration: 0s
              final_sleep: 0s
              num_tokens: 512

              ring:
                kvstore:
                  store: inmemory
                  replication_factor: 1
    cortex_env_variables:
      ingester:
        JAEGER_AGENT_HOST: localhost
        JAEGER_SAMPLER_PARAM: 0
        JAEGER_SAMPLER_TYPE: const

Local Testing

The preferred way of locally testing the role is to use Docker and molecule (v3.x). You will have to install Docker on your system. See "Get started" for a Docker package suitable to for your system. Running your tests is as simple as executing molecule test.

Continuous Intergation

Combining molecule and circle CI allows us to test how new PRs will behave when used with multiple ansible versions and multiple operating systems. This also allows use to create test scenarios for different role configurations. As a result we have a quite large test matrix which can take more time than local testing, so please be patient.

Contributing

See contributor guideline.

Troubleshooting

See troubleshooting.

License

This project is licensed under MIT License. See LICENSE for more details.