74 lines
1.8 KiB
Markdown
74 lines
1.8 KiB
Markdown
---
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title: Log Rotate
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sidebar_label: Log Rotate
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hide_title: false
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hide_table_of_contents: false
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---
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# LogRotate
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SRS always writes log to a single log file `srs.log`, so it will become very larger. We can use rotate the log to zip or remove it.
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1. First, move the log file to another tmp log file:```mv objs/srs.log /tmp/srs.`date +%s`.log```
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1. Then, send signal to SRS. SRS will close the previous file fd and reopen the log file:```killall -s SIGUSR1```
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1. Finally, zip or remove the tmp log file.
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## Use logrotate
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Recommend to use [logrotate](https://www.jianshu.com/p/ec7f1626a3d3) to manage log files.
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1. Install logrotate:
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```
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sudo yum install -y logrotate
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```
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1. Config logrotate to manage SRS log file:
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```
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cat << END > /etc/logrotate.d/srs
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/usr/local/srs/objs/srs.log {
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daily
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dateext
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compress
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rotate 7
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size 1024M
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sharedscripts
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postrotate
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kill -USR1 \`cat /usr/local/srs/objs/srs.pid\`
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endscript
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}
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END
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```
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> Note: Run logrotate manually by `logrotate -f /etc/logrotate.d/srs`
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## CopyTruncate
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For SRS2, we could use [copytruncate](https://unix.stackexchange.com/questions/475524/how-copytruncate-actually-works),
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**but it's strongly not recommended** because the logs maybe dropped, so it's only a workaround for server not supported
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SIGUSR1 such as SRS2.
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> Yes, SRS3 surely supports copytruncate and it's not recommended.
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The config is bellow, from [PR#1561](https://github.com/ossrs/srs/pull/1561#issuecomment-571408173) by [wnpllrzodiac](https://github.com/wnpllrzodiac):
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```
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cat << END > /etc/logrotate.d/srs
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/usr/local/srs/objs/srs.log {
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daily
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dateext
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compress
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rotate 7
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size 1024M
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copytruncate
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}
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END
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```
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Winlin 2016.12
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