snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

puppet/zulip/lib/facter/container_memory_limit.rb

@@ -0,0 +1,25 @@
+Facter.add(:container_memory_limit_mb) do
+  confine kernel: 'Linux'
+
+  setcode do
+    begin
+      memory_limit_mb = nil
+
+      # Check for cgroup v2
+      if File.exist?('/sys/fs/cgroup/memory.max')
+        val = File.read('/sys/fs/cgroup/memory.max').strip
+        memory_limit_mb = val.to_i / 1024 / 1024 unless val == 'max'
+
+      # Fallback to cgroup v1
+      elsif File.exist?('/sys/fs/cgroup/memory/memory.limit_in_bytes')
+        val = File.read('/sys/fs/cgroup/memory/memory.limit_in_bytes').strip.to_i
+        memory_limit_mb = val / 1024 / 1024 if val < 9223372036854771712
+      end
+
+      memory_limit_mb
+    rescue => e
+      Facter.debug("container_memory_limit_mb error: #{e}")
+      nil
+    end
+  end
+end