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69 lines
2.4 KiB
Markdown
69 lines
2.4 KiB
Markdown
# Log2Ram
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Like ramlog for systemd (on debian 8 jessie for example).
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Usefull for **RaspberryPi** for not writing on the SD card all the time. You need it because your SD card doesn't want to suffer anymore!
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The script [log2ram](https://github.com/azlux/log2ram) can work on every linux system. So you can use it with your own daemon manager if you don't have systemd.
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Log2Ram is based on transient log for Systemd here : [A transient /var/log](https://www.debian-administration.org/article/661/A_transient_/var/log)
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_____
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## Menu
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1. [Install](#install)
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2. [Upgrade](#upgrade)
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3. [Customize](#customize)
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4. [It is working ?](#it-is-working)
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5. [Uninstall](#uninstall-)
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## Install
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curl -Lo log2ram.tar.gz https://github.com/azlux/log2ram/archive/master.tar.gz
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tar xf log2ram.tar.gz
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cd log2ram-master
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chmod +x install.sh && sudo ./install.sh
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cd ..
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rm -r log2ram-master
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**REBOOT** before installing anything else (for example apache2)
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## Upgrade
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You need to stop log2ram (`service log2ram stop`) and start the [install](#install).
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## Customize
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#### variables :
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In the file `/etc/log2ram.conf`, there are three variables:
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- `SIZE`: defines the size the log folder will reserve into the RAM (default is 40M).
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- `USE_RSYNC`: Can be set to `true` if you prefer ´rsync´ rather than ´cp´. I use the command `cp -u` and `rsync -X`, I don't copy the all folder every time for optimization.
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- `MAIL`: Disables the error system mail if there is not enough place on RAM (if set to `false`)
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#### refresh time:
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By default Log2Ram writes to the HardDisk every hour. If you think this is too much, you can make the write every day by moving the cron file to daily: `sudo mv /etc/cron.hourly/log2ram /etc/cron.daily/log2ram`.
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### It is working?
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You can now check the mount folder in ram with (You will see lines with log2ram if working)
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```
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# df -h
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…
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log2ram 40M 532K 40M 2% /var/log
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…
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# mount
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…
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log2ram on /var/log type tmpfs (rw,nosuid,nodev,noexec,relatime,size=40960k,mode=755)
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…
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```
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If you have issue with apache2, you can try to add `apache2.service` next to other services on the `Before` parameter in `/etc/systemd/system/log2ram.service` it will solve the pb
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The log for log2ram will be written at: `/var/log/log2ram.log`
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###### Now, muffins for everyone!
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## Uninstall :(
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(Because sometime we need it)
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```
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chmod +x /usr/local/bin/uninstall-log2ram.sh && sudo /usr/local/bin/uninstall-log2ram.sh
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```
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