k shack/alerting: prepare irc-alerts for binaergewitter

1 files changed, 2 insertions, 19 deletions

diff --git a/krebs/2configs/shack/prometheus/alert-rules.nix b/krebs/2configs/shack/prometheus/alert-rules.nix
index 5ba49ede6..4cefdc3e5 100644
--- a/krebs/2configs/shack/prometheus/alert-rules.nix
+++ b/krebs/2configs/shack/prometheus/alert-rules.nix
@@ -1,6 +1,6 @@
 { lib,... }:
 let
-  disk_free_threshold = "10"; # at least this much free disk percentage
+  disk_free_threshold = "5"; # at least this much free disk percentage
 in {
   services.prometheus.rules = [(builtins.toJSON
     {
@@ -8,22 +8,6 @@ in {
         { name = "shack-env";
           rules = [
             {
-              alert = "Wolf RootPartitionFull";
-              for = "30m";
-              expr = ''(node_filesystem_avail_bytes{alias="wolf.shack",mountpoint="/"} * 100) / node_filesystem_size_bytes{alias="wolf.shack",mountpoint="/"} < ${disk_free_threshold}'';
-              labels.severity = "warning";
-              annotations.summary = "{{ $labels.alias }} root disk full";
-              annotations.url = "http://grafana.shack/d/hb7fSE0Zz/shack-system-dashboard?orgId=1&var-job=node&var-hostname=All&var-node=wolf.shack:9100&var-device=All&var-maxmount=%2F&var-show_hostname=wolf";
-              annotations.description = ''The root disk of {{ $labels.alias }} has {{ $value | printf "%.2f" }}% free disk space (Threshold at ${disk_free_threshold}%). CI for deploying new configuration will seize working. Log in to the system and try to clean up the obsolete files on the machine. There are a couple of things you can do:
-1. `nix-collect-garbage -d`
-2. clean up the shack share folder in `/home/share`
-3. check `du -hs /var/ | sort -h`.
-4. run `docker system prune`
-5. `find /var/lib/containers/news/var/lib/htgen-go/items -mtime +7 -delete;` to clean up the link shortener data
-5. If you are really desperate run `du -hs / | sort -h` and go through the folders recursively until you've found something to delete
-6. as a last resort the root disk can be expanded via `lvresize -L +10G /dev/pool/root && btrfs filesystem resize max /` '';
-            }
-            {
               alert = "Puyak RootPartitionFull";
               for = "30m";
               expr = ''(node_filesystem_avail_bytes{alias="puyak.shack",mountpoint="/"} * 100) / node_filesystem_size_bytes{alias="puyak.shack",mountpoint="/"} < ${disk_free_threshold}'';
@@ -32,9 +16,8 @@ in {
               annotations.url = "http://grafana.shack/d/hb7fSE0Zz/shack-system-dashboard?orgId=1&var-job=node&var-hostname=All&var-node=wolf.shack:9100&var-device=All&var-maxmount=%2F&var-show_hostname=puyak";
               annotations.description = ''The root disk of {{ $labels.alias }} has {{ $value | printf "%.2f" }}% free disk space (Threshold at ${disk_free_threshold}%).Prometheus will not be able to create new alerts and CI for deploying new configuration will also seize working. Log in to the system and run `nix-collect-garbage -d` and if this does not help you can check `du -hs /var/ | sort -h`, run `docker system prune` or if you are really desperate run `du -hs / | sort -h` and go through the folders recursively until you've found something to delete'';
             }
-            # wolf.shack is not worth supervising anymore
             {
-              alert = "HostDown";
+              alert = "Infra01 down";
               expr = ''up{alias="infra01.shack"} == 0'';
               for = "5m";
               labels.severity = "page";