Differences

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--- docker [2020/04/15 00:46] – tmaier
+++ docker [2022/01/31 11:28] (current) – tmaier
@@ Line 61: / Line 61: @@
 </code>
+===== Docker Logging =====
+====== Logging with rsyslog ======
+/etc/rsyslog.d/docker.conf
+<code>
+# Docker config
+$AddUnixListenSocket /tmp/syslog.sock
+# syslogtag enthält noch PID
+# programname nur appname/tag: 598-rddnsmasq
+$template myFormat,"%timereported% %programname%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n"
+template(
+  name="docker_container_file"
+  type="string"
+  string="/var/log/docker/%programname%.log"
+  option.casesensitive="on"
+)
+# 23: local7
+if $syslogfacility == 23 then {
+  if $programname startswith "bw_" then {
+    action(name="docker-containers-bitwarden" type="omfile" file="/var/log/docker/bitwarden.log" template="myFormat")
+  } else {
+    action(name="docker-containers" type="omfile" dynaFile="docker_container_file" template="myFormat")
+  }
+}
+</code>
+/etc/docker/daemon.json
+<code>
+{
+  "log-driver": "syslog",
+  "log-opts":
+    {
+      "tag": "{{.Name}}",
+      "syslog-facility": "local7",
+      "syslog-address": "unixgram:///tmp/syslog.sock"
+    }
+}
+</code>
+Restart rsyslog, the docker daemon and then all containers to switch to the new driver. Otherwise the docker daemon shows the following error message for the affected containers: "Configured log driver does not support reads, enabling local file cache for container logs".