> For the complete documentation index, see [llms.txt](https://docs.nodeum.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nodeum.io/data-archiving/console/system-settings/services.md).

# Services

### Check the healthy of services

> System -> Services

The administrators are easily check the healthy of Nodeum Services. 

All services are displayed.  It allows to monitor the state of each one and also to stop or start each service independently. 

Administrator can check the Nodeum services and the system services.  

### **Service Status**

* <mark style="color:green;">Green</mark> : service is running
* <mark style="color:yellow;">Yellow</mark> : The service is not running, but it is not required for normal
* <mark style="color:red;">Red</mark> : The service isn't running, but it's essential for normal operation.

| Information      | Description                                                    |
| ---------------- | -------------------------------------------------------------- |
| **Service Name** | This is the name of the service                                |
| **Version**      | This is the version of the service                             |
| **Actions**      | <ul><li>Restart the service</li><li>Stop the service</li></ul> |

<figure><img src="/files/VVOXyUP6uAGkVo4w40tW" alt=""><figcaption><p>System Service</p></figcaption></figure>

### Nodeum Services

<table><thead><tr><th width="238">Name</th><th width="376.1332600911458">Description </th><th>Mandatory</th></tr></thead><tbody><tr><td>Notification Manager</td><td>Service managing all Nodeum services supervision and inter-process communication handler</td><td>yes</td></tr><tr><td>Core Manager</td><td>Workflow Manager task orchestration and storage connection handler</td><td>yes</td></tr><tr><td>Tape Library Manager</td><td>Tape Library and Drive management</td><td>yes</td></tr><tr><td>Data Mining</td><td>Data Collector and handling system statistics analyses</td><td>yes</td></tr><tr><td>File System Virtualization</td><td>Provide global file system virtualization across storage node.</td><td>no</td></tr><tr><td>Watchdog</td><td>Service Monitoring Manager which executes the automatic restart of failing service</td><td>yes</td></tr><tr><td>Ref. File Parsing</td><td>Service which handles the xml/json file parsing</td><td>no</td></tr><tr><td>Scheduler</td><td>Task Scheduling service which manages execution of task at selected time.</td><td>yes</td></tr><tr><td>File Listing Processing</td><td>Service that manages the Primary Storage mounting and its content parsing and inventory.</td><td>yes</td></tr><tr><td>Indexation Engine</td><td>Service that sync the database with the system and index the contents</td><td>no</td></tr></tbody></table>

&#x20;System Services

<table><thead><tr><th width="155.33333333333331">Name</th><th width="393">Description</th><th>Mandatory</th></tr></thead><tbody><tr><td>Solr</td><td>Content Indexation Engine which provides fast access at each content</td><td>yes</td></tr><tr><td>NGINX</td><td>HTTP Web Service</td><td>yes</td></tr><tr><td>Delayed: Job</td><td>It executes tasks as a background process in Rails environment. It increases page rendering speed when asynchronous jobs are processed in the background. </td><td>yes</td></tr><tr><td>MySQL</td><td>Database Management</td><td>yes</td></tr><tr><td>MongoDB</td><td>Database Management</td><td>yes</td></tr><tr><td>MinIO</td><td>Data Transport - S3 Frontend Service</td><td>no</td></tr><tr><td>NFS</td><td>Data Transport - NFS Service</td><td>yes</td></tr><tr><td>SMB</td><td>Data Transport - SMB Service</td><td>yes</td></tr><tr><td>SNMP</td><td>Monitoring  - SNMP Service</td><td>yes</td></tr><tr><td>SLAPD</td><td>Authentication - SLAPD Service</td><td>yes</td></tr><tr><td>NSLCD</td><td>Authentication - NSLCD Service</td><td>yes</td></tr></tbody></table>


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