Overrides cgroup path

The virtual file /proc/self/cgroup should list the current cgroup membership. For each hierarchy, you can follow the cgroup path from this file to the cgroup filesystem (usually /sys/fs/cgroup/) and introspect the statistics for the cgroup for the given hierarchy. Alas, Docker breaks this by mounting the container statistics at the root while leaving the cgroup paths as the actual paths. Therefore, Kibana provides a mechanism to override reading the cgroup path from /proc/self/cgroup and instead uses the cgroup path defined the configuration properties cpu.cgroup.path.override and cpuacct.cgroup.path.override. Therefore, we set this value here so that cgroup statistics are available for the container this process will run in. Signed-off-by: Tyler Smalley <[email protected]>
elastic · May 2, 2017 · 63113fd · 63113fd
1 parent 39c7fa5
commit 63113fd
Showing 1 changed file with 14 additions and 1 deletion.
diff --git a/build/kibana/bin/kibana-docker b/build/kibana/bin/kibana-docker
@@ -120,4 +120,17 @@ for kibana_var in ${kibana_vars[*]}; do
     fi
 done
 
-exec /usr/share/kibana/bin/kibana ${longopts}
+# The virtual file /proc/self/cgroup should list the current cgroup
+# membership. For each hierarchy, you can follow the cgroup path from
+# this file to the cgroup filesystem (usually /sys/fs/cgroup/) and
+# introspect the statistics for the cgroup for the given
+# hierarchy. Alas, Docker breaks this by mounting the container
+# statistics at the root while leaving the cgroup paths as the actual
+# paths. Therefore, Kibana provides a mechanism to override
+# reading the cgroup path from /proc/self/cgroup and instead uses the
+# cgroup path defined the configuration properties
+# cpu.cgroup.path.override and cpuacct.cgroup.path.override.
+# Therefore, we set this value here so that cgroup statistics are
+# available for the container this process will run in.
+
+exec /usr/share/kibana/bin/kibana --cpu.cgroup.path.override=/ --cpuacct.cgroup.path.override=/ ${longopts}