85 lines
3.2 KiB
Bash
Executable File
85 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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# Munin: resource monitoring tool
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#################################################
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source setup/functions.sh # load our functions
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source /etc/mailinabox.conf # load global vars
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# install Munin
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echo "Installing Munin (system monitoring)..."
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apt_install munin munin-node libcgi-fast-perl
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# libcgi-fast-perl is needed by /usr/lib/munin/cgi/munin-cgi-graph
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# edit config
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cat > /etc/munin/munin.conf <<EOF;
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dbdir /var/lib/munin
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htmldir /var/cache/munin/www
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logdir /var/log/munin
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rundir /var/run/munin
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tmpldir /etc/munin/templates
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includedir /etc/munin/munin-conf.d
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# path dynazoom uses for requests
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cgiurl_graph /admin/munin/cgi-graph
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# a simple host tree
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[$PRIMARY_HOSTNAME]
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address 127.0.0.1
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# send alerts to the following address
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contacts admin
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contact.admin.command mail -s "Munin notification \${var:host}" administrator@$PRIMARY_HOSTNAME
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contact.admin.always_send warning critical
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EOF
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# The Debian installer touches these files and chowns them to www-data:adm for use with spawn-fcgi
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chown munin. /var/log/munin/munin-cgi-html.log
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chown munin. /var/log/munin/munin-cgi-graph.log
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# ensure munin-node knows the name of this machine
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# and reduce logging level to warning
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tools/editconf.py /etc/munin/munin-node.conf -s \
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host_name=$PRIMARY_HOSTNAME \
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log_level=1
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# Update the activated plugins through munin's autoconfiguration.
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munin-node-configure --shell --remove-also 2>/dev/null | sh || /bin/true
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# Deactivate monitoring of NTP peers. Not sure why anyone would want to monitor a NTP peer. The addresses seem to change
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# (which is taken care of my munin-node-configure, but only when we re-run it.)
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find /etc/munin/plugins/ -lname /usr/share/munin/plugins/ntp_ -print0 | xargs -0 /bin/rm -f
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# Deactivate monitoring of network interfaces that are not up. Otherwise we can get a lot of empty charts.
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for f in $(find /etc/munin/plugins/ \( -lname /usr/share/munin/plugins/if_ -o -lname /usr/share/munin/plugins/if_err_ -o -lname /usr/share/munin/plugins/bonding_err_ \)); do
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IF=$(echo $f | sed s/.*_//);
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if ! grep -qFx up /sys/class/net/$IF/operstate 2>/dev/null; then
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rm $f;
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fi;
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done
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# Create a 'state' directory. Not sure why we need to do this manually.
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mkdir -p /var/lib/munin-node/plugin-state/
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# Create a systemd service for munin.
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ln -sf $(pwd)/management/munin_start.sh /usr/local/lib/mailinabox/munin_start.sh
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chmod 0744 /usr/local/lib/mailinabox/munin_start.sh
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cp --remove-destination conf/munin.service /lib/systemd/system/munin.service # target was previously a symlink so remove first
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hide_output systemctl link -f /lib/systemd/system/munin.service
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hide_output systemctl daemon-reload
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hide_output systemctl unmask munin.service
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hide_output systemctl enable munin.service
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# Restart services.
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restart_service munin
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restart_service munin-node
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# generate initial statistics so the directory isn't empty
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# (We get "Pango-WARNING **: error opening config file '/root/.config/pango/pangorc': Permission denied"
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# if we don't explicitly set the HOME directory when sudo'ing.)
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# We check to see if munin-cron is already running, if it is, there is no need to run it simultaneously
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# generating an error.
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if [ ! -f /var/run/munin/munin-update.lock ]; then
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sudo -H -u munin munin-cron
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fi
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