Enable --log-level=info for docker daemons for jenkins jobs and e2e tests except soak-continuous.

cluster/common.sh

@@ -537,6 +537,11 @@ EOF
   if [ -n "${KUBELET_TEST_LOG_LEVEL:-}" ]; then
       cat >>$file <<EOF
 KUBELET_TEST_LOG_LEVEL: $(yaml-quote ${KUBELET_TEST_LOG_LEVEL})
+EOF
+  fi
+  if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
+      cat >>$file <<EOF
+DOCKER_TEST_LOG_LEVEL: $(yaml-quote ${DOCKER_TEST_LOG_LEVEL})
 EOF
   fi
   if [ -n "${ENABLE_CUSTOM_METRICS:-}" ]; then

cluster/gce/config-test.sh

@@ -76,6 +76,7 @@ ENABLE_CLUSTER_MONITORING="${KUBE_ENABLE_CLUSTER_MONITORING:-influxdb}"
 # Default Log level for all components in test clusters and variables to override it in specific components.
 TEST_CLUSTER_LOG_LEVEL="${TEST_CLUSTER_LOG_LEVEL:---v=4}"
 KUBELET_TEST_LOG_LEVEL="${KUBELET_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
+DOCKER_TEST_LOG_LEVEL="${DOCKER_TEST_LOG_LEVEL:---log-level=info}"
 API_SERVER_TEST_LOG_LEVEL="${API_SERVER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
 CONTROLLER_MANAGER_TEST_LOG_LEVEL="${CONTROLLER_MANAGER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
 SCHEDULER_TEST_LOG_LEVEL="${SCHEDULER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"

cluster/gce/configure-vm.sh

@@ -464,6 +464,11 @@ EOF
     if [ -n "${KUBELET_TEST_LOG_LEVEL:-}" ]; then
       cat <<EOF >>/srv/salt-overlay/pillar/cluster-params.sls
 kubelet_test_log_level: '$(echo "$KUBELET_TEST_LOG_LEVEL" | sed -e "s/'/''/g")'
+EOF
+    fi
+    if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
+      cat <<EOF >>/srv/salt-overlay/pillar/cluster-params.sls
+docker_test_log_level: '$(echo "$DOCKER_TEST_LOG_LEVEL" | sed -e "s/'/''/g")'
 EOF
     fi
     if [ -n "${CONTROLLER_MANAGER_TEST_ARGS:-}" ]; then

cluster/saltbase/salt/docker/docker-defaults

@@ -7,5 +7,9 @@
 {% if pillar.get('network_provider', '').lower() == 'kubenet' %}
   {% set bridge_opts = "" %}
 {% endif -%}
-DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false --log-level=warn"
+{% set log_level = "--log-level=warn" -%}
+{% if pillar['docker_test_log_level'] is defined -%}
+  {% set log_level = pillar['docker_test_log_level'] -%}
+{% endif -%}
+DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false {{log_level}}"
 DOCKER_NOFILE=1000000

hack/jenkins/job-configs/kubernetes-jenkins/kubernetes-soak.yaml

@@ -80,6 +80,8 @@
         export E2E_DOWN="false"
         # Clear out any orphaned namespaces in case previous run was interrupted.
         export E2E_CLEAN_START="true"
+        # TODO: Remove when we figure out #22166 and other docker potential slowness.
+        export DOCKER_TEST_LOG_LEVEL="--log-level=warn"
         # We should be testing the reliability of a long-running cluster. The
         # [Disruptive] tests kill/restart components or nodes in the cluster,
         # defeating the purpose of a soak cluster. (#15722)