itamae/cookbooks/loki/setup.rb

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# Create `/etc/loki/`:
%w(/etc/loki).each do |d|
directory d do
owner 'root'
group 'root'
mode '0755'
end
end
# Deploy `prometheus` files:
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template '/etc/loki/loki-config.yml' do
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owner 'root'
group 'root'
mode '644'
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variables(ipaddr: node['consul']['ipaddr'])
notifies :restart, 'service[loki]'
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end
# Deploy `systemd` configuration for `prometheus`:
remote_file '/etc/systemd/system/loki.service' do
owner 'root'
group 'root'
mode '644'
end
# Service setting:
service 'loki' do
action [ :enable, :restart ]
end
# Depoy `consul` service configuration for `loki`:
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template '/etc/consul.d/service-loki.json' do
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owner 'root'
group 'root'
mode '644'
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variables(ipaddr: node['consul']['ipaddr'])
notifies :reload, 'service[consul]'
end
service 'consul' do
action :nothing
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end
# Depoy `promtail` configuration for `loki`:
HOSTNAME = run_command('uname -n').stdout.chomp
template '/etc/promtail/loki.yaml' do
owner 'root'
group 'root'
mode '644'
variables(HOSTNAME: HOSTNAME, LOKIENDPOINT: node['promtail']['lokiendpoint'])
notifies :restart, 'service[promtail-loki]'
end
# Deploy `systemd` configuration for `promtail-loki`:
remote_file '/etc/systemd/system/promtail-loki.service' do
owner 'root'
group 'root'
mode '644'
end
# Service setting:
service 'promtail-loki' do
action [ :enable, :restart ]
end
remote_file '/etc/rsyslog.d/30-loki.conf' do
owner 'root'
group 'root'
mode '644'
notifies :restart, 'service[rsyslog]'
end
service 'rsyslog' do
action [ :nothing ]
end
# Deploy the `logrotated` configuration:
remote_file '/etc/logrotate.d/loki' do
owner 'root'
group 'root'
mode '644'
end
# Restart the `supervisor`:
service 'supervisor' do
action :nothing
end
# Firewall settings here:
%w( 3100/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