monitorix_ynh/doc/DISCLAIMER.md

Upgrade

By default, a backup is performed before upgrading. To avoid this, you have the following options:

• Pass the NO_BACKUP_UPGRADE env variable with 1 at each upgrade. For example NO_BACKUP_UPGRADE=1 yunohost app upgrade monitorix.
• Set disable_backup_before_upgrade to 1. You can set it with this command:

yunohost app setting monitorix disable_backup_before_upgrade -v 1

After that, the settings will be applied for all the next updates.

From command line:

yunohost app upgrade monitorix

Backup

This application now uses the core-only feature of the backup. To keep the integrity of the data and to have a better guarantee of the restoration it is recommended to proceed as follows:

• Stop Monitorix service with this command:

systemctl stop monitorix.service

• Launch Monitorix backup with this command:

yunohost backup create --app monitorix

• Backup your data with your specific strategy (could be with rsync, borg backup or just cp). The data is generally stored in /var/lib/monitorix.
• Restart Monitorix service with theses command:

systemctl start monitorix.service

Remove

Due of the backup core only feature the data directory in /var/lib/monitorix is not removed. It must be manually deleted to purge user data from the app.

More sensor

If you want to see the temperature of some sensor you can install the lm-sensor packet. For disk temperature you can instal the hddtemp packet.

Custom config

If you want do custom the monitorix config for more personnal information you can add a file in /etc/monitorix/conf.d/. This config file will be overwritte the original config in /etc/monitorix/monitorix.conf.

You will have a full complete documentation for monitorix config here : https://www.monitorix.org/documentation.html

By example you can extends the basic config by this :

priority = 5

<graph_enable>

        disk            = y
        lmsens          = y
        gensens         = y
        mail            = y
</graph_enable>

# LMSENS graph
# -----------------------------------------------------------------------------
<lmsens>
        <list>
                core0   = temp1
                core1   =
                mb0     =
                cpu0    =
                fan0    =
                fan1    =
                fan2    =
                volt0   =
                volt1   =
                volt2   =
                volt3   =
                volt4   =
                volt5   =
                volt6   =
                volt7   =
        </list>
</lmsns>

# GENSENS graph
# -----------------------------------------------------------------------------
<gensens>
        <list>
                0 = cpu_temp
                1 = cpu0_freq, cpu1_freq, cpu2_freq, cpu3_freq
        </list>
        <desc>
                cpu_temp = /sys/class/thermal/thermal_zone0/temp
                cpu0_freq = /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
                cpu1_freq = /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq
                cpu2_freq = /sys/devices/system/cpu/cpu2/cpufreq/cpuinfo_cur_freq
                cpu3_freq = /sys/devices/system/cpu/cpu3/cpufreq/cpuinfo_cur_freq
        </desc>
        <unit>
                cpu_temp = 1000
                cpu0_freq = 0.001
                cpu1_freq = 0.001
                cpu2_freq = 0.001
                cpu3_freq = 0.001
        </unit>
        <map>
                cpu_temp = CPU Temperature
                cpu0_freq = CPU 0 Frequency
                cpu1_freq = CPU 1 Frequency
                cpu2_freq = CPU 2 Frequency
                cpu3_freq = CPU 3 Frequency
        </map>
        <alerts>
            cpu_temp = 300, 65, /etc/monitorix/monitorix_alerts_scripts/cpu_temp.sh
        </alerts>
</gensens>

# DISK graph
# -----------------------------------------------------------------------------
<disk>
        <list>
                0 = /dev/sda
        </list>
        <alerts>
                realloc_enabled = y
                realloc_timeintvl = 0
                realloc_threshold = 1
                realloc_script = /etc/monitorix/monitorix_alerts_scripts/disk_realloc.sh
                pendsect_enabled = y
                pendsect_timeintvl = 0
                pendsect_threshold = 1
                pendsect_script = /etc/monitorix/monitorix_alerts_scripts/disk_pendsect.sh
        </alerts>
</disk>

# FS graph
# -----------------------------------------------------------------------------
<fs>
        <list>
                0 = /, /home, /var, /$tempdir, swap
        </list>
        <desc>
                / = Root FS
                /home = home
                /var = var
                /$tempdir = tmp
        </desc>
        <devmap>
        </devmap>
        rigid = 2, 0, 2, 0
        limit = 100, 1000, 100, 1000
        <alerts>
            / = 3600, 98, /etc/monitorix/monitorix_alerts_scripts/fs_rootfs.sh
            /home = 3600, 98, /etc/monitorix/monitorix_alerts_scripts/fs_home.sh
            /var = 3600, 98, /etc/monitorix/monitorix_alerts_scripts/fs_var.sh
            /$tempdir = 3600, 98, /etc/monitorix/monitorix_alerts_scripts/fs_tmp.sh
            swap = 3600, 98, /etc/monitorix/monitorix_alerts_scripts/fs_swap.sh
        </alerts>
</fs>


# MAIL graph
# -----------------------------------------------------------------------------
<mail>
        mta = postfix
        greylist = postgrey
        stats_rate = real
        rigid = 0, 0, 0, 0, 0
        limit = 1, 1000, 1000, 1000, 1000
        <alerts>
                delvd_enabled = y
                delvd_timeintvl = 60
                delvd_threshold = 100
                delvd_script = /etc/monitorix/monitorix_alerts_scripts/mail_delvd.sh
                mqueued_enabled = y
                mqueued_timeintvl = 3600
                mqueued_threshold = 100
                mqueued_script = /etc/monitorix/monitorix_alerts_scripts/mail_mqueued.sh
        </alerts>
</mail>


# NET graph
# -----------------------------------------------------------------------------
<net>
        list = eth0,lo
        <desc>
                eth0 = FastEthernet LAN, 0, 10000000
                lo = loopback, 0, 10000000
        </desc>

        gateway = eth0
</net>

# PROCESS graph
# -----------------------------------------------------------------------------
<process>
        <list>
                0 = sshd, ntpd, monitorix, monitorix-httpd
                1 = openvpn, ...
                ...
                6 = mysqld, slapd, postgresql
        </list>
        <desc>
                master = Postfix
                imap = Dovecot
        </desc>
        rigid = 2, 0, 0, 0, 0, 0, 0, 0
        limit = 100, 1000, 1000, 1000, 1000, 1000, 1000, 1000
</process>



<emailreports>
        enabled = y
        url_prefix = http://127.0.0.1:8081/monitorix
        smtp_hostname = localhost
        from_address = noreply@domain.tld
        hour = 2
        minute = 7
        <daily>
                enabled = y
                graphs = system, fs, gensens, disk, netstat, port, nginx
                to = user@domain.tld
        </daily>
        <weekly>
                enabled = y
                graphs = system, fs, gensens, disk, kern, proc, net, netstat, process, serv, port, user, nginx, mysql, fail2ban, int
                to = user@domain.tld
        </weekly>
        <monthly>
                enabled = y
                graphs = system, fs, gensens, disk, kern, proc, net, netstat, process, serv, port, user, nginx, mysql, fail2ban, int
                to = user@domain.tld
        </monthly>
        <yearly>
                enabled = y
                graphs = system, fs, gensens, disk, kern, proc, net, netstat, process, serv, port, user, nginx, mysql, fail2ban, int
                to = user@domain.tld
        </yearly>
</emailreports>

In this config we have :

• We set the process priority to 5 (which mean that it will be lower priority than the other process).
• We get the lmsensor sensor data.
• We get some sensors data not accessible with lmsensor (with gensens)
• We check the disk health and send an email if any error happens. For that you need to make some script. An example is available in /usr/share/doc/monitorix/monitorix-alert.sh.
• We check the filesystem.
• We check the traffic in the network card.
• We check some process.
• We send every day, week, month and year a rapport.