itamae/cookbooks/prometheus/prometheus_setup.rb

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# Create User and group:
user 'prometheus' do
system_user true
shell '/sbin/nologin'
end
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# Create `/etc/prometheus.d/`:
%w( /etc/prometheus.d /var/opt/prometheus ).each do |d|
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directory d do
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owner 'prometheus'
group 'prometheus'
mode '0744'
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end
end
# Deploy `prometheus` files:
remote_file '/etc/prometheus.d/prometheus.yml' do
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owner 'prometheus'
group 'prometheus'
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mode '644'
end
# Deploy `systemd` configuration for `prometheus`:
remote_file '/etc/systemd/system/prometheus.service' do
owner 'root'
group 'root'
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mode '644'
end
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service 'prometheus' do
action [:enable, :start]
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end
# Depoy `rsyslog` configuration for `prometheus`:
remote_file '/etc/rsyslog.d/30-prometheus.conf' do
owner 'root'
group 'root'
mode '644'
notifies :restart, 'service[rsyslog]'
end
service 'rsyslog' do
action :nothing
end
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# Depoy `logrotate` configuration for `prometheus`:
remote_file '/etc/logrotate.d/prometheus' do
owner 'root'
group 'root'
mode '644'
end
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# Depoy `vector` configuration for `prometheus`:
remote_file '/etc/vector/prometheus.toml' do
owner 'root'
group 'root'
mode '644'
end
remote_file '/etc/systemd/system/vector-prometheus.service' do
owner 'root'
group 'root'
mode '0644'
end
service 'vector-prometheus' do
action [:enable, :start]
end
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# Depoy `consul` service configuration for `prometheus`:
remote_file '/etc/consul.d/service-prometheus.json' do
owner 'consul'
group 'consul'
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mode '644'
notifies :reload, 'service[consul]'
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end
# Restart the `consul`:
service 'consul' do
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action :nothing
end
# Firewall settings here:
%w( 9090/tcp ).each do |p|
execute "ufw allow #{p}" do
user 'root'
not_if "LANG=c ufw status | grep #{p}"
notifies :run, 'execute[ufw reload-or-enable]'
end
end
execute 'ufw reload-or-enable' do
user 'root'
command 'LANG=C ufw reload | grep skipping && ufw --force enable || exit 0'
action :nothing
end