* Stefano Chiesa <[email protected]> [20160517 10:12]:
> I have installed the VM version v1.0.2 

I know you know, but you should upgrade.

> After a year of work I have the root partition full:
> 
> $ df -h
> Filesystem                    Size  Used Avail Use% Mounted on
> /dev/mapper/graylog--vg-root   15G   15G     0 100% /
> none                          4.0K     0  4.0K   0% /sys/fs/cgroup
> udev                          2.0G  4.0K  2.0G   1% /dev
> tmpfs                         396M  648K  395M   1% /run
> none                          5.0M     0  5.0M   0% /run/lock
> none                          2.0G     0  2.0G   0% /run/shm
> none                          100M     0  100M   0% /run/user
> /dev/sda1                     236M   37M  187M  17% /boot
> 
> Now I think that I have to delete something here:
> 
> $ sudo find / -path /data1/ -prune -or -size +500M -print
> /var/log/graylog/nginx/access.log
> /var/log/graylog/web/application.log

Feel free to truncate these while graylog is stopped once you've had a
look at them:

graylog-ctl stop
sudo sh -c 'echo "" > /var/log/graylog/nginx/access.log'
sudo sh -c 'echo "" > /var/log/graylog/web/application.log'
graylog-ctl start


> /var/log/graylog/elasticsearch/graylog2.log.2016-05-15
> /var/log/graylog/elasticsearch/graylog2.log.2016-05-13
> /var/log/graylog/elasticsearch/graylog2.log.2016-05-14

This hints that you ran out of space on the 13th :)

> /var/opt/graylog/data/mongodb/journal/j._3
> /var/opt/graylog/data/mongodb/journal/prealloc.2
> /var/opt/graylog/data/mongodb/journal/j._4

I wouldn't mess with these. However, consider adding '--smallfiles' to
MongoDB's run script at /opt/graylog/service/mongodb/run 

> I tried to access those directories but the SSH login I use (ubuntu / 
> ubuntu) is not a root user so I can't access.

ubuntu is in sudoers, most stuff is graylog's; try

sudo su - graylog

> I'm not a linux expert at all so I have some difficulties in solving this 
> problem.
> 
> Can someone help me on this?

start with:

sudo ls -lh /var/opt/graylog/data/elasticsearch/graylog2/nodes/0/indices

sudo du -csh /var/opt/graylog/data/*

Adjust your config to prune more data:
http://docs.graylog.org/en/1.0/pages/index_model.html#eviction-of-indices-and-messages

Note that your version does not support sized based rotation, so you
can't be sure it won't fill up again if someone starts sending bigger
messages to it. Consider upgrading ;)

qvb
--
pica

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