mem_avail

schema.sql

@@ -11,3 +11,11 @@ CREATE TABLE host_uptime (
     -- uptime in seconds
     uptime INT NOT NULL
 );
+
+CREATE TABLE host_mem (
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    host_id INT NOT NULL REFERENCES host(id),
+    -- available memory in kB
+    mem_avail INT NOT NULL
+);

status

@@ -15,3 +15,15 @@ psql -w <<EOF
     FROM host_upsert
     RETURNING *;
 EOF
+
+psql -w <<EOF
+    WITH host_upsert AS (
+        INSERT INTO host (name) VALUES ('$(hostname)')
+        ON CONFLICT (name) DO UPDATE SET name = EXCLUDED.name
+        RETURNING id
+    )
+    INSERT INTO host_mem (host_id, mem_avail)
+    SELECT id, '$(cat /proc/meminfo | grep 'MemAvailable' | awk '{print $2}')'
+    FROM host_upsert
+    RETURNING *;
+EOF