timestamp_in_logfile_name and logrotate faq (#1047)

docs-2.0/20.appendix/0.FAQ.md

@@ -296,7 +296,10 @@ Solution: Add the following configuration in the `profiles` scope of Maven's `se
 
 By default, the logs of Nebula Graph are stored in  `/usr/local/nebula/logs/`. The INFO level log files are `nebula-graphd.INFO, nebula-storaged.INFO, nebula-metad.INFO`. If an alarm or error occurs, the suffixes are modified as `.WARNING` or `.ERROR`.
 
-Nebula Graph uses [glog](https://github.com/google/glog) to print logs. `glog` cannot recycle the outdated files. You can use crontab to delete them by yourself. For more information, see [`Glog should delete old log files automatically`](https://github.com/google/glog/issues/423).
+Nebula Graph uses [glog](https://github.com/google/glog) to print logs. `glog` cannot recycle the outdated files. To rotate logs, you can:
+
+-  Use crontab to delete logs periodically. For more information, see [`Glog should delete old log files automatically`](https://github.com/google/glog/issues/423).
+-  Use [logrotate](https://github.com/logrotate/logrotate) to manage log files. Before using logrotate, modify the configurations of corresponding services and set `timestamp_in_logfile_name` to `false`.
 
 ### "How to check the Nebula Graph version?"
 

docs-2.0/5.configurations-and-logs/1.configurations/2.meta-config.md

@@ -43,6 +43,7 @@ For all parameters and their current values, see [Configurations](1.configuratio
 |`stdout_log_file`  |`metad-stdout.log`     | Specifies the filename for the `stdout` log.                     |
 |`stderr_log_file`  |`metad-stderr.log`     | Specifies the filename for the `stderr` log.                     |
 |`stderrthreshold`  | `2`                   | Specifies the `minloglevel` to be copied to the `stderr` log.    |
+| `timestamp_in_logfile_name` | `true` | Specifies if the log file name contains a timestamp. `true` indicates yes, `false` indicates no. |
 
 ## Networking configurations
 

docs-2.0/5.configurations-and-logs/1.configurations/3.graph-config.md

@@ -44,6 +44,7 @@ For all parameters and their current values, see [Configurations](1.configuratio
 |`stdout_log_file`  |`graphd-stdout.log`     | Specifies the filename for the `stdout` log.                           |
 |`stderr_log_file`  |`graphd-stderr.log`     | Specifies the filename for the `stderr` log.                           |
 |`stderrthreshold`  | `2`                    | Specifies the `minloglevel` to be copied to the `stderr` log.          |
+| `timestamp_in_logfile_name` | `true` | Specifies if the log file name contains a timestamp. `true` indicates yes, `false` indicates no. |
 
 ## Query configurations
 

docs-2.0/5.configurations-and-logs/1.configurations/4.storage-config.md

@@ -47,6 +47,7 @@ For all parameters and their current values, see [Configurations](1.configuratio
 |`stdout_log_file`  |`graphd-stdout.log`     | Specifies the filename for the `stdout` log.                           |
 |`stderr_log_file`  |`graphd-stderr.log`     | Specifies the filename for the `stderr` log.                           |
 |`stderrthreshold`  | `2`                    | Specifies the `minloglevel` to be copied to the `stderr` log.          |
+| `timestamp_in_logfile_name` | `true` | Specifies if the log file name contains a timestamp. `true` indicates yes, `false` indicates no. |
 
 ## Networking configurations