From a8fe9e2ca7c5a3ff8500cb9d01c8d02ca2ebf30b Mon Sep 17 00:00:00 2001
From: Yahav Halfon <halfonyahav@gmail.com>
Date: Mon, 9 Sep 2024 01:22:36 +0300
Subject: [PATCH] Added storage.agent.wal-truncate-frequency to docs

Signed-off-by: Yahav Halfon <halfonyahav@gmail.com>
---
 cmd/prometheus/main.go          | 2 +-
 docs/command-line/prometheus.md | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/cmd/prometheus/main.go b/cmd/prometheus/main.go
index ee6cd0c2e..565b7f314 100644
--- a/cmd/prometheus/main.go
+++ b/cmd/prometheus/main.go
@@ -435,7 +435,7 @@ func main() {
 
 	agentOnlyFlag(a, "storage.agent.wal-truncate-frequency",
 		"The frequency at which to truncate the WAL and remove old data.").
-		Hidden().PlaceHolder("<duration>").SetValue(&cfg.agent.TruncateFrequency)
+		Default("2h").PlaceHolder("<duration>").SetValue(&cfg.agent.TruncateFrequency)
 
 	agentOnlyFlag(a, "storage.agent.retention.min-time",
 		"Minimum age samples may be before being considered for deletion when the WAL is truncated").
diff --git a/docs/command-line/prometheus.md b/docs/command-line/prometheus.md
index 8fefa8ecc..d99511fdf 100644
--- a/docs/command-line/prometheus.md
+++ b/docs/command-line/prometheus.md
@@ -40,6 +40,7 @@ The Prometheus monitoring server
 | <code class="text-nowrap">--storage.tsdb.head-chunks-write-queue-size</code> | Size of the queue through which head chunks are written to the disk to be m-mapped, 0 disables the queue completely. Experimental. Use with server mode only. | `0` |
 | <code class="text-nowrap">--storage.agent.path</code> | Base path for metrics storage. Use with agent mode only. | `data-agent/` |
 | <code class="text-nowrap">--storage.agent.wal-compression</code> | Compress the agent WAL. Use with agent mode only. | `true` |
+| <code class="text-nowrap">--storage.agent.wal-truncate-frequency</code> | The frequency at which to truncate the WAL and remove old data. Use with agent mode only. | `2h` |
 | <code class="text-nowrap">--storage.agent.retention.min-time</code> | Minimum age samples may be before being considered for deletion when the WAL is truncated Use with agent mode only. |  |
 | <code class="text-nowrap">--storage.agent.retention.max-time</code> | Maximum age samples may be before being forcibly deleted when the WAL is truncated Use with agent mode only. |  |
 | <code class="text-nowrap">--storage.agent.no-lockfile</code> | Do not create lockfile in data directory. Use with agent mode only. | `false` |