Add ncp-app for prometheus (system) metricsv1.37.3

* metrics.{sh,cfg}: Implement ncp-app for prometheus (system) metrics

letsencrypts.sh, nc-nextcloud.sh, nextcloud.conf.sh: Introduce templating/generator concept to allow multiple ncp apps to edit the same file without conflicts

library.sh: Add convenience function find_app_param

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* letsencrypt.sh: Remove commented code

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.cfg: Deactivate by default

- Add title, description and remove TODO entries

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.sh: Restart apache after enabling proxy_http

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* update.sh: Update ncp-templates directory during updates

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* update.sh: Copy ncp-templates directory, not just its content

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.sh,update.sh: Disable metrics in docker for now

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.sh: Disable prometheus-node-exporter via systemctl

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.sh: Move apache mod configuration to updates

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.cfg: Remove invalid parameter type

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.sh: Create /etc/default/prometheus-node-exporter via heredoc

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* nextcloud.conf.sh: Prevent template parsing error if metrics.sh is disabled (i.e. on docker)

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* metrics.cfg: Add info directing users to my preconfigured ncp dashboard

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* Various fixes

- metrics.sh: Fix is_active function always returning 1
- metrics.sh: Fix apache2 reload potentially interrupting web ui
- nc-nextcloud.sh: exit if nextcloud.conf templating fails
- various readability and code style improvements

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* letsencrypt.sh: Use consistent return codes in tmpl_letsencrypt_domain

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* nextcloud.conf.sh: Remove obsolete return code escape

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* nextcloud.conf.sh: Ensure that the snakeoil self-signed cert exists before enabling it

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

* updates/1.36.4.sh: Reload apache in the background instead of restarting it blockingly

Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/etc/ncp-config.d/metrics.cfg b/etc/ncp-config.d/metrics.cfg
new file mode 100644
index 00000000..07e60ab2
--- /dev/null
+++ b/etc/ncp-config.d/metrics.cfg
@@ -0,0 +1,28 @@
+{
+  "id": "metrics",
+  "name": "System Metrics, that can be collected by an external server",
+  "title": "System Metrics",
+  "description": "Prometheus (https://prometheus.io) compatible metrics for things like, CPU/memory/disk usage etc.",
+  "info": "In order to use these metrics, you will need to setup at least an external Prometheus instance. You can find a quick and easy way to start at https://github.com/theCalcaholic/ncp-monitoring-dashboard",
+  "infotitle": "External service required",
+  "params": [
+    {
+      "id": "ACTIVE",
+      "name": "Active",
+      "value": "no",
+      "type": "bool"
+    },
+    {
+      "id": "USER",
+      "name": "Metrics User",
+      "value": "metrics",
+      "suggest": "metrics"
+    },
+    {
+      "id": "PASSWORD",
+      "name": "Metrics Password",
+      "value": "",
+      "type": "password"
+    }
+  ]
+}