disk_free

schema.sql

@@ -19,3 +19,11 @@ CREATE TABLE host_mem (
     -- available memory in kB
     mem_avail INT NOT NULL
 );
+
+CREATE TABLE host_disk (
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    host_id INT NOT NULL REFERENCES host(id),
+    -- free disk space in kB
+    disk_free INT NOT NULL
+);

status

@@ -27,3 +27,15 @@ psql -w <<EOF
     FROM host_upsert
     RETURNING *;
 EOF
+
+psql -w <<EOF
+    WITH host_upsert AS (
+        INSERT INTO host (name) VALUES ('$(hostname)')
+        ON CONFLICT (name) DO UPDATE SET name = EXCLUDED.name
+        RETURNING id
+    )
+    INSERT INTO host_disk (host_id, disk_free)
+    SELECT id, '$(df / | awk 'NR==2{print $4}')'
+    FROM host_upsert
+    RETURNING *;
+EOF