# Redis Enterprise Software release notes 6.2.18-70 (January 2023)

```json metadata
{
  "schema_version": 2,
  "title": "Redis Enterprise Software release notes 6.2.18-70 (January 2023)",
  "description": "New script to generate new self-signed certificates for renewal. Improved logs. Deactivate alert_mgr using rladmin.",
  "categories": ["docs","operate","rs"],
  "tableOfContents": {"sections":[{"id":"new-features-and-enhancements","title":"New features and enhancements"},{"id":"resolved-issues","title":"Resolved issues"},{"id":"known-upgrade-limitations","title":"Known upgrade limitations"}]}

,
  "codeExamples": []
}
```


This is a maintenance release for ​[​Redis Enterprise Software version 6.2.18](https://redis.io/downloads/#software).

The following table shows the MD5 checksums for the available packages:

| Package | MD5 checksum (6.2.18-70 January release) |
|:--------|:-------------|
| Ubuntu 16 | `69d2d2c71232adb15cebf29308ac54da` |
| Ubuntu 18 | `22e0637107a32ccb96a704abe9650adf` |
| RedHat Enterprise Linux (RHEL) 7<br/>Oracle Enterprise Linux (OL) 7 | `e14fcf6973418602f2b64a55a0bc8374` |
| RedHat Enterprise Linux (RHEL) 8<br/>Oracle Enterprise Linux (OL) 8 <br/>Rocky Enterprise Linux | `f61d0d8f0bb5ad90a470482d6575eb27` |

## New features and enhancements

- Added a new script to generate new self-signed certificates for renewal. For details, see [Certificates](https://redis.io/docs/latest/operate/rs/security/certificates)
- Added `rpm -q` command output to the logs (RS82673)
- Added logs for server operations: `start`, `stop`, `restart` (RS87775)
- Added `alert_mgr` to the [services you can deactivate with `rladmin`](https://redis.io/docs/latest/operate/rs/clusters/optimize/turn-off-services) (RS89572)

## Resolved issues

- RS61062 - Remove leading colon added to `PATH` variable

## Known upgrade limitations

Before you upgrade a cluster that hosts Active-Active databases with modules to v6.2.18, perform the following steps:

1. Use `crdb-cli` to verify that the modules (`modules`) and their versions (in `module_list`) are as they appear in the database configuration and in the default database configuration:

    ```sh
    crdb-cli crdb get --crdb-guid <crdb-guid>
    ```

1. From the admin console's **redis modules** tab, validate that these modules with their specific versions are loaded to the cluster.

1. If one or more of the modules/versions are missing or if you need help, [contact Redis support](https://redis.com/company/support/) before taking additional steps.