From 7ffa7da1122fd6a7925ddc730a6cb508e7f2f389 Mon Sep 17 00:00:00 2001
From: Lantao Liu <lantaol@google.com>
Date: Sun, 24 Feb 2019 23:24:31 -0800
Subject: [PATCH] Configure logrotate for pod logs.

---
 cluster/gce/config-default.sh       |  8 ++++++++
 cluster/gce/config-test.sh          |  8 ++++++++
 cluster/gce/gci/configure-helper.sh | 15 +++++++++++++++
 3 files changed, 31 insertions(+)

diff --git a/cluster/gce/config-default.sh b/cluster/gce/config-default.sh
index 34753dc7a5a..a7e057927de 100755
--- a/cluster/gce/config-default.sh
+++ b/cluster/gce/config-default.sh
@@ -415,6 +415,14 @@ if [[ -n "${LOGROTATE_MAX_SIZE:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} LOGROTATE_MAX_SIZE"
 fi
 
+if [[ -n "${POD_LOG_MAX_FILE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} POD_LOG_MAX_FILE"
+fi
+
+if [[ -n "${POD_LOG_MAX_SIZE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} POD_LOG_MAX_SIZE"
+fi
+
 # Fluentd requirements
 # YAML exists to trigger a configuration refresh when changes are made.
 FLUENTD_GCP_YAML_VERSION="v3.2.0"
diff --git a/cluster/gce/config-test.sh b/cluster/gce/config-test.sh
index cce1b431edb..9fbfac7a4a7 100755
--- a/cluster/gce/config-test.sh
+++ b/cluster/gce/config-test.sh
@@ -432,6 +432,14 @@ if [[ -n "${LOGROTATE_MAX_SIZE:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} LOGROTATE_MAX_SIZE"
 fi
 
+if [[ -n "${POD_LOG_MAX_FILE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} POD_LOG_MAX_FILE"
+fi
+
+if [[ -n "${POD_LOG_MAX_SIZE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} POD_LOG_MAX_SIZE"
+fi
+
 # Fluentd requirements
 # YAML exists to trigger a configuration refresh when changes are made.
 FLUENTD_GCP_YAML_VERSION="v3.2.0"
diff --git a/cluster/gce/gci/configure-helper.sh b/cluster/gce/gci/configure-helper.sh
index a2e429f6a44..de00f1ae606 100644
--- a/cluster/gce/gci/configure-helper.sh
+++ b/cluster/gce/gci/configure-helper.sh
@@ -374,6 +374,21 @@ function setup-logrotate() {
 }
 EOF
 
+  # Configure log rotation for pod logs in /var/log/pods/NAMESPACE_NAME_UID.
+  cat > /etc/logrotate.d/allpodlogs <<EOF
+/var/log/pods/*/*.log {
+    rotate ${POD_LOG_MAX_FILE:-5}
+    copytruncate
+    missingok
+    notifempty
+    compress
+    maxsize ${POD_LOG_MAX_SIZE:-5M}
+    daily
+    dateext
+    dateformat -%Y%m%d-%s
+    create 0644 root root
+}
+EOF
 }
 
 # Finds the master PD device; returns it in MASTER_PD_DEVICE