Zabbix database is down

[ortarab]

Hey,

I've finished install and configure zabbix with MySql just few weeks ago. Last week without any notice and with no visible reason I've got from the zabbix agent installed locally on the zabbix server this "Zabbix database is down" mail.
database was down for 20min and returned by itself. I wanted to know what caused it.
I didn't find any helpful posts regarding my issue, but I did checked few things that were recommended to check in any case of database issues :

1. Checked Zabbix server, zabbix agent and MySql logs. The zabbix logs were quite clean, no reason for the error was presented. In MySql logs I had error.log for exactly matched the downtime by time, but no error was presented.

2. Checked the free space on my server with df -h, this is what I've got :
Filesystem Size Used Avail Use% Mounted on
udev 992M 0 992M 0% /dev
tmpfs 200M 21M 180M 11% /run
/dev/xvda1 7.7G 7.6G 142M 99% /
tmpfs 1000M 0 1000M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 1000M 0 1000M 0% /sys/fs/cgroup
/dev/loop3 13M 13M 0 100% /snap/amazon-ssm-agent/495
/dev/loop5 17M 17M 0 100% /snap/amazon-ssm-agent/734
/dev/loop6 88M 88M 0 100% /snap/core/5548
/dev/loop1 88M 88M 0 100% /snap/core/5662
/dev/loop2 17M 17M 0 100% /snap/amazon-ssm-agent/784
/dev/loop0 88M 88M 0 100% /snap/core/5742
tmpfs 200M 0 200M 0% /run/user/1000

[vesper1978]

Uhhh...there's only 142M of free space on your / mount. Likely it ran out of disk space. You're going to need to increase the disk space.