Fix permissions for WAL data directory

CHANGELOG.md

@@ -56,6 +56,9 @@
 
 - [BUGFIX] Fix issue with windows_exporter mssql collector crashing the agent. (@mattdurham)
 
+- [BUGFIX] The deb and rpm files will now ensure the /var/lib/grafana-agent
+  data directory is created with permissions set to 0770. (@rfratto)
+
 # v0.22.0 (2022-01-13)
 
 This release has deprecations. Please read [DEPRECATION] entries and consult

packaging/deb/control/postinst

@@ -26,6 +26,12 @@ case "$1" in
             usermod -a -G systemd-journal "$GRAFANA_AGENT_USER"
         fi
 
+        if [ ! -d /var/lib/grafana-agent ]; then
+          mkdir -p /var/lib/grafana-agent
+          chown $GRAFANA_AGENT_USER:$GRAFANA_AGENT_GROUP /var/lib/grafana-agent
+          chmod 770 /var/lib/grafana-agent
+        fi
+
         chmod 640 /etc/grafana-agent.yaml
         chown root:$GRAFANA_AGENT_GROUP /etc/grafana-agent.yaml
 

packaging/rpm/control/postinst

@@ -29,7 +29,12 @@ if [ "$1" -eq 1 ] ; then
 
     add_to_logging_groups
 
-    chown $AGENT_USER:$AGENT_GROUP /var/lib/grafana-agent
+    if [ ! -d /var/lib/grafana-agent ]; then
+      mkdir -p /var/lib/grafana-agent
+      chown $AGENT_USER:$AGENT_GROUP /var/lib/grafana-agent
+      chmod 770 /var/lib/grafana-agent
+    fi
+
     chmod 640 /etc/grafana-agent.yaml
     chown root:$AGENT_GROUP /etc/grafana-agent.yaml