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Docker container for a Cronicle single-server master node

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DEPRECATED

Please use https://github.com/bluet/docker-cronicle-docker instead.

docker-cronicle

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Docker container for a Cronicle single-server master node

Supported tags

latest

Latest version of Cronicle server based upon nodejs Docker image.

letsencrypt

Same as the latest Docker image, but with support for Let's Encrypt certificates. Which means that the Cronicle server can be used with SSL and a Let's Encrypt certificate. If this is not needed, just use the tag latest.

s3

Same as the latest Docker image, but with support for Amazon S3 storage. If there is no need for S3, again, just go for latest.

Usage

Install

docker pull intelliops/cronicle:latest

Running

docker run --name cronicle --hostname localhost -p 3012:3012 intelliops/cronicle:latest

Alternatively with persistent data and logs:

docker run --name cronicle \
  -v /path-to-cronicle-storage/data:/opt/cronicle/data:rw \
  -v /path-to-cronicle-storage/logs:/opt/cronicle/logs:rw \
  --hostname localhost -p 3012:3012 intelliops/cronicle:latest

The web UI will be available at: http://localhost:3012

NOTE: please replace the hostname localhost, this is only for testing purposes! If you rename the hostname also consider setting the environmental variable CRONICLE_base_app_url. e.g docker run --name cronicle --hostname cronicle-host -p 3012:3012 -e CRONICLE_base_app_url='http://cronicle-host:3012' intelliops/cronicle:latest

Volumes

Cronicle process runs under the cronicle user with ID 1001 and GUID 1001`. If you are using Docker bind mounts set permissions accordingly.

Path Description
/opt/cronicle/data Volume for data
/opt/cronicle/logs Volume for logs
/opt/cronicle/plugins Volume for plugins

Configuration

Environmental variables

Cronicle supports a special environment variable syntax, which can specify command-line options as well as override any configuration settings. The variable name syntax is CRONICLE_key where key is one of several command-line options (see table below) or a JSON configuration property path.

For overriding configuration properties by environment variable, you can specify any top-level JSON key from config.json, or a path to a nested property using double-underscore (__) as a path separator. For boolean properties, you can specify 1 for true and 0 for false. Here is an example of some of the possibilities available:

Environmental variable Description Default value
CRONICLE_base_app_url A fully-qualified URL to Cronicle on your server, including the port if non-standard. This is used for self-referencing URLs. http://localhost:3012
CRONICLE_WebServer__http_port The HTTP port for the web UI of your Cronicle server. (Keep default value, unless you know what you are doing) 3012
CRONICLE_WebServer__https_port The SSL port for the web UI of your Cronicle server. (Keep default value, unless you know what you are doing) 443
CRONICLE_web_socket_use_hostnames Setting this parameter to 1 will force Cronicle's Web UI to connect to the back-end servers using their hostnames rather than IP addresses. This includes both AJAX API calls and Websocket streams. 1
CRONICLE_server_comm_use_hostnames Setting this parameter to 1 will force the Cronicle servers to connect to each other using hostnames rather than LAN IP addresses. 1
CRONICLE_web_direct_connect When this property is set to 0, the Cronicle Web UI will connect to whatever hostname/port is on the URL. It is expected that this hostname/port will always resolve to your master server. This is useful for single server setups, situations when your users do not have direct access to your Cronicle servers via their IPs or hostnames, or if you are running behind some kind of reverse proxy. If you set this parameter to 1, then the Cronicle web application will connect directly to your individual Cronicle servers. This is more for multi-server configurations, especially when running behind a load balancer with multiple backup servers. The Web UI must always connect to the master server, so if you have multiple backup servers, it needs a direct connection. 0
CRONICLE_socket_io_transports This allows you to customize the socket.io transports used to connect to the server for real-time updates. If you are trying to run Cronicle in an environment where WebSockets are not allowed (perhaps an ancient firewall or proxy), you can change this array to contain the polling transport first. Otherwise set it to ["websocket"] ["polling", "websocket"]

Custom configuration file

A custom configuration file can be provide in the following location:

/path-to-cronicle-storage/data/config.json.import

The file will get loaded the very first time Cronicle is started. If afterwards a forced reload of the custom configuration is needed remove the following file and restart the Docker container:

/path-to-cronicle-storage/data/.setup_done

Web UI credentials

The default credentials for the web interface are: admin / admin

Reference

https://github.com/jhuckaby/Cronicle

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