From d311d4b84099fdffbc02be0cf42e5db4cce9dd15 Mon Sep 17 00:00:00 2001
From: Andrea Dell'Amico <andrea.dellamico@isti.cnr.it>
Date: Mon, 27 Jun 2022 17:42:25 +0200
Subject: [PATCH] Increase nfiles in the systemd unit.

---
 defaults/main.yml               | 3 ++-
 templates/prometheus.service.j2 | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/defaults/main.yml b/defaults/main.yml
index 0991738..33a9ef8 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -10,4 +10,5 @@ prometheus_confdir: '/opt/prometheus/conf'
 prometheus_cmd: '{{ prometheus_dist_dir }}/{{ prometheus_dir }}/prometheus'
 prometheus_loglevel: info
 prometheus_http_port: 9090
-prometheus_opts: '--storage.tsdb.retention=120d'
+prometheus_opts: '--storage.tsdb.retention.time=120d'
+# --storage.tsdb.retention.size=512GB
diff --git a/templates/prometheus.service.j2 b/templates/prometheus.service.j2
index eea2fc0..e63614c 100644
--- a/templates/prometheus.service.j2
+++ b/templates/prometheus.service.j2
@@ -7,6 +7,8 @@ After=network.target
 Type=simple
 User={{ prometheus_user }}
 Group={{ prometheus_user }}
+LimitCORE=infinity
+LimitNOFILE=65536
 EnvironmentFile=/etc/default/prometheus
 ExecStart={{ prometheus_cmd }} $PROMETHEUS_STARTUP_OPTS
 ExecReload=/bin/kill -HUP $MAINPID