## Operating Environment **These are the environments where we have confirmed operation.** ## Limitations 1. We recommend using the latest OS and browsers. Some older models and OS versions may not operate properly. 1. From ver. 1.3.44 onwards, it does not work with IE and Edge's IE compatibility mode. 1. From ver. 1.4.0.0 onwards, CentOS 7 does not work because .NET 8 is no longer supported. 1. MySQL can be used from ver1.4.9.0 onwards. Pleasanter versions prior to ver. 1.4.9.0 do not support MySQL. ### Pleasanter **Windows** | | Name | | :--------- | :--------------------------------------------- | | OS | Windows Server 2016 / 2019 / 2022 | | Web Server | Internet Information Services 8.0 / 8.5 / 10.0 | | DB Server | PostgreSQL 11 / 12 / 13 / 14 / 15 / 16 / 17<br>FUJITSU Software Enterprise Postgres 12 SP1 / 13<br>SQL Server 2019 / 2022 (Compatibility Level 130 or higher)<br>MySQL 8.4 | | Platform | .NET 8 SDK / Hosting Bundle | **Linux** | | Name | | :------------------ |:-----| | OS | Red Hat Enterprise Linux 8 / 9<br>Ubuntu 20.04 / 22.04 / 24.04<br>AlmaLinux 9.2 / 9.3 / 9.4 / 9.5 / 10.0 | | Web Server | nginx 1.14.1 / 1.20 / 1.24.0<br>Apache 2.4.53 | | DB Server | PostgreSQL 11 / 12 / 13 / 14 / 15 / 16 / 17<br>FUJITSU Software Enterprise Postgres 12 SP1 / 13<br>PowerGres on Linux 11<br>SQL Server 2019<br>MySQL 8.4 | | Platform | .NET 8 SDK | ### Web Browsers 1. Chrome 2. Edge 3. Safari ## Recommended Specifications **On-Premises Environment** | | Recommended Specifications | | :---------- | :------------------------- | | CPU | 2 cores or more | | Memory | 4GB or more | | System Disk | 60GB or more | | Data Disk | 10GB or more<br>SSD recommended.<br>Please prepare additional space separately when considering backup areas. | **Microsoft Azure Serverless Configuration** | | Recommended Specifications | | :----------- | :------------------------------- | | App Service | S1 ACU 100 1.75GB memory or more | | SQL Database | S3 DTU 100 250GB or more | ## Supported Versions | Supported Version | Content | | :---------------- | :---------------- | | 1.4.9.0 and later | MySQL 8.4 support | ## Recommendation for Session Persistence in Cluster Configuration When configuring Pleasanter in a multi-node cluster, if the load balancer uses round-robin methods that do not maintain sessions (session affinity), problems may occur with login authentication and some session management operations. To ensure stable operation, we recommend using a configuration with session persistence enabled (session affinity / sticky sessions). Additionally, cases have been confirmed where file upload processing for attachments does not complete properly due to session switching during the process. For details on this issue, please refer to the following manual page. [FAQ: UIn An Environment Where There Are Multiple Servers With Pleasanter Installed On The Backend Of A Load Balancer, Attachments Cannot Be Uploaded Or Registered Properly]( https://pleasanter.org/ja/manual/faq-direct-upload-to-database)