#!/usr/bin/env bash
# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Call this to dump all master and node logs into the folder specified in $1
# (defaults to _artifacts). Only works if the provider supports SSH.
# TODO(shyamjvs): This script should be moved to test/e2e which is where it ideally belongs.
set -o errexit
set -o nounset
set -o pipefail
readonly report_dir="${1:-_artifacts}"
readonly gcs_artifacts_dir="${2:-}"
readonly logexporter_namespace="${3:-logexporter}"
# In order to more trivially extend log-dump for custom deployments,
# check for a function named log_dump_custom_get_instances. If it's
# defined, we assume the function can me called with one argument, the
# role, which is either "master" or "node".
echo 'Checking for custom logdump instances, if any'
if [[ $(type -t log_dump_custom_get_instances) == "function" ]]; then
readonly use_custom_instance_list=yes
else
readonly use_custom_instance_list=
fi
readonly master_ssh_supported_providers="gce aws"
readonly node_ssh_supported_providers="gce gke aws"
readonly gcloud_supported_providers="gce gke"
readonly master_logfiles="kube-apiserver.log kube-apiserver-audit.log kube-scheduler.log kube-controller-manager.log cloud-controller-manager.log etcd.log etcd-events.log glbc.log cluster-autoscaler.log kube-addon-manager.log konnectivity-server.log fluentd.log kubelet.cov"
readonly node_logfiles="kube-proxy.log containers/konnectivity-agent-*.log fluentd.log node-problem-detector.log kubelet.cov kube-network-policies.log"
readonly node_systemd_services="node-problem-detector"
readonly hollow_node_logfiles="kubelet-hollow-node-*.log kubeproxy-hollow-node-*.log npd-hollow-node-*.log"
readonly aws_logfiles="cloud-init-output.log"
readonly gce_logfiles="startupscript.log"
readonly kern_logfile="kern.log"
readonly initd_logfiles="docker/log"
readonly supervisord_logfiles="kubelet.log supervisor/supervisord.log supervisor/kubelet-stdout.log supervisor/kubelet-stderr.log supervisor/docker-stdout.log supervisor/docker-stderr.log"
readonly systemd_services="kubelet kubelet-monitor kube-container-runtime-monitor ${LOG_DUMP_SYSTEMD_SERVICES:-containerd}"
readonly extra_log_files="${LOG_DUMP_EXTRA_FILES:-}"
readonly extra_systemd_services="${LOG_DUMP_SAVE_SERVICES:-}"
readonly dump_systemd_journal="${LOG_DUMP_SYSTEMD_JOURNAL:-false}"
# Log files found in WINDOWS_LOGS_DIR on Windows nodes:
readonly windows_node_logfiles="kubelet.log kube-proxy.log docker.log docker_images.log csi-proxy.log"
# Log files found in other directories on Windows nodes:
readonly windows_node_otherfiles="C:\\Windows\\MEMORY.dmp"
# Limit the number of concurrent node connections so that we don't run out of
# file descriptors for large clusters.
readonly max_dump_processes=25
# Indicator variable whether we experienced a significant failure during
# logexporter creation or execution.
logexporter_failed=0
# Percentage of nodes that must be logexported successfully (otherwise the
# process will exit with a non-zero exit code).
readonly log_dump_expected_success_percentage="${LOG_DUMP_EXPECTED_SUCCESS_PERCENTAGE:-0}"
function print-deprecation-note() {
local -r dashline=$(printf -- '-%.0s' {1..100})
echo "${dashline}"
echo "k/k version of the log-dump.sh script is deprecated!"
echo "Please migrate your test job to use test-infra's repo version of log-dump.sh!"
echo "Migration steps can be found in the readme file."
echo "${dashline}"
}
# TODO: Get rid of all the sourcing of bash dependencies eventually.
function setup() {
KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/../..
if [[ -z "${use_custom_instance_list}" ]]; then
: "${KUBE_CONFIG_FILE:=config-test.sh}"
echo 'Sourcing kube-util.sh'
source "${KUBE_ROOT}/cluster/kube-util.sh"
echo 'Detecting project'
detect-project 2>&1
elif [[ "${KUBERNETES_PROVIDER}" == "gke" ]]; then
echo "Using 'use_custom_instance_list' with gke, skipping check for LOG_DUMP_SSH_KEY and LOG_DUMP_SSH_USER"
# Source the below script for the ssh-to-node utility function.
# Hack to save and restore the value of the ZONE env as the script overwrites it.
local gke_zone="${ZONE:-}"
source "${KUBE_ROOT}/cluster/gce/util.sh"
ZONE="${gke_zone}"
elif [[ -z "${LOG_DUMP_SSH_KEY:-}" ]]; then
echo 'LOG_DUMP_SSH_KEY not set, but required when using log_dump_custom_get_instances'
exit 1
elif [[ -z "${LOG_DUMP_SSH_USER:-}" ]]; then
echo 'LOG_DUMP_SSH_USER not set, but required when using log_dump_custom_get_instances'
exit 1
fi
source "${KUBE_ROOT}/hack/lib/util.sh"
}
function log-dump-ssh() {
if [[ "${gcloud_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
ssh-to-node "$@"
return
fi
local host="$1"
local cmd="$2"
ssh -oLogLevel=quiet -oConnectTimeout=30 -oStrictHostKeyChecking=no -i "${LOG_DUMP_SSH_KEY}" "${LOG_DUMP_SSH_USER}@${host}" "${cmd}"
}
# Copy all files /var/log/{$3}.log on node $1 into local dir $2.
# $3 should be a string array of file names.
# This function shouldn't ever trigger errexit, but doesn't block stderr.
function copy-logs-from-node() {
local -r node="${1}"
local -r dir="${2}"
shift
shift
local files=("$@")
# Append "*"
# The * at the end is needed to also copy rotated logs (which happens
# in large clusters and long runs).
files=( "${files[@]/%/*}" )
# Prepend "/var/log/"
files=( "${files[@]/#/\/var\/log\/}" )
# Comma delimit (even the singleton, or scp does the wrong thing), surround by braces.
local -r scp_files="{$(printf "%s," "${files[@]}")}"
if [[ "${gcloud_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
# get-serial-port-output lets you ask for ports 1-4, but currently (11/21/2016) only port 1 contains useful information
gcloud compute instances get-serial-port-output --project "${PROJECT}" --zone "${ZONE}" --port 1 "${node}" > "${dir}/serial-1.log" || true
source_file_args=()
for single_file in "${files[@]}"; do
source_file_args+=( "${node}:${single_file}" )
done
gcloud compute scp --recurse --project "${PROJECT}" --zone "${ZONE}" "${source_file_args[@]}" "${dir}" > /dev/null || true
elif [[ "${KUBERNETES_PROVIDER}" == "aws" ]]; then
local ip
ip=$(get_ssh_hostname "${node}")
scp -oLogLevel=quiet -oConnectTimeout=30 -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" "${SSH_USER}@${ip}:${scp_files}" "${dir}" > /dev/null || true
elif [[ -n "${use_custom_instance_list}" ]]; then
scp -oLogLevel=quiet -oConnectTimeout=30 -oStrictHostKeyChecking=no -i "${LOG_DUMP_SSH_KEY}" "${LOG_DUMP_SSH_USER}@${node}:${scp_files}" "${dir}" > /dev/null || true
else
echo "Unknown cloud-provider '${KUBERNETES_PROVIDER}' and use_custom_instance_list is unset too - skipping logdump for '${node}'"
fi
}
# Save logs for node $1 into directory $2. Pass in any non-common files in $3.
# Pass in any non-common systemd services in $4.
# $3 and $4 should be a space-separated list of files.
# Set $5 to true to indicate it is on master. Default to false.
# This function shouldn't ever trigger errexit
function save-logs() {
local -r node_name="${1}"
local -r dir="${2}"
local files=()
IFS=' ' read -r -a files <<< "$3"
local opt_systemd_services="${4:-""}"
local on_master="${5:-"false"}"
local extra=()
IFS=' ' read -r -a extra <<< "$extra_log_files"
files+=("${extra[@]}")
if [[ -n "${use_custom_instance_list}" ]]; then
if [[ -n "${LOG_DUMP_SAVE_LOGS:-}" ]]; then
local dump=()
IFS=' ' read -r -a dump <<< "${LOG_DUMP_SAVE_LOGS:-}"
files+=("${dump[@]}")
fi
else
local providerlogs=()
case "${KUBERNETES_PROVIDER}" in
gce|gke)
IFS=' ' read -r -a providerlogs <<< "${gce_logfiles}"
;;
aws)
IFS=' ' read -r -a providerlogs <<< "${aws_logfiles}"
;;
esac
files+=("${providerlogs[@]}")
fi
local services
read -r -a services <<< "${systemd_services} ${opt_systemd_services} ${extra_systemd_services}"
if log-dump-ssh "${node_name}" "command -v journalctl" &> /dev/null; then
if [[ "${on_master}" == "true" ]]; then
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -u kube-master-installation.service" > "${dir}/kube-master-installation.log" || true
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -u kube-master-configuration.service" > "${dir}/kube-master-configuration.log" || true
else
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -u kube-node-installation.service" > "${dir}/kube-node-installation.log" || true
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -u kube-node-configuration.service" > "${dir}/kube-node-configuration.log" || true
fi
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -k" > "${dir}/kern.log" || true
for svc in "${services[@]}"; do
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise -u ${svc}.service" > "${dir}/${svc}.log" || true
done
if [[ "$dump_systemd_journal" == "true" ]]; then
log-dump-ssh "${node_name}" "sudo journalctl --output=short-precise" > "${dir}/systemd.log" || true
fi
else
local tmpfiles=()
for f in "${kern_logfile}" "${initd_logfiles}" "${supervisord_logfiles}"; do
IFS=' ' read -r -a tmpfiles <<< "$f"
files+=("${tmpfiles[@]}")
done
fi
# log where we pull the images from
log-dump-ssh "${node_name}" "sudo ctr -n k8s.io images ls" > "${dir}/images-containerd.log" || true
log-dump-ssh "${node_name}" "sudo docker images --all" > "${dir}/images-docker.log" || true
# Try dumping coverage profiles, if it looks like coverage is enabled in the first place.
if log-dump-ssh "${node_name}" "stat /var/log/kubelet.cov" &> /dev/null; then
if log-dump-ssh "${node_name}" "command -v docker" &> /dev/null; then
if [[ "${on_master}" == "true" ]]; then
run-in-docker-container "${node_name}" "kube-apiserver" "cat /tmp/k8s-kube-apiserver.cov" > "${dir}/kube-apiserver.cov" || true
run-in-docker-container "${node_name}" "kube-scheduler" "cat /tmp/k8s-kube-scheduler.cov" > "${dir}/kube-scheduler.cov" || true
run-in-docker-container "${node_name}" "kube-controller-manager" "cat /tmp/k8s-kube-controller-manager.cov" > "${dir}/kube-controller-manager.cov" || true
else
run-in-docker-container "${node_name}" "kube-proxy" "cat /tmp/k8s-kube-proxy.cov" > "${dir}/kube-proxy.cov" || true
fi
else
echo 'Coverage profiles seem to exist, but cannot be retrieved from inside containers.'
fi
fi
echo 'Changing logfiles to be world-readable for download'
log-dump-ssh "${node_name}" "sudo chmod -R a+r /var/log" || true
echo "Copying '${files[*]}' from ${node_name}"
copy-logs-from-node "${node_name}" "${dir}" "${files[@]}"
}
# Saves a copy of the Windows Docker event log to ${WINDOWS_LOGS_DIR}\docker.log
# on node $1.
function export-windows-docker-event-log() {
local -r node="${1}"
local -r powershell_cmd="powershell.exe -Command \"\$logs=\$(Get-EventLog -LogName Application -Source Docker | Format-Table -Property TimeGenerated, EntryType, Message -Wrap); \$logs | Out-File -FilePath '${WINDOWS_LOGS_DIR}\\docker.log'\""
# Retry up to 3 times to allow ssh keys to be properly propagated and
# stored.
for retry in {1..3}; do
if gcloud compute ssh --project "${PROJECT}" --zone "${ZONE}" "${node}" \
--command "$powershell_cmd"; then
break
else
sleep 10
fi
done
}
# Saves prepulled Windows Docker images list to ${WINDOWS_LOGS_DIR}\docker_images.log
# on node $1.
function export-windows-docker-images-list() {
local -r node="${1}"
local -r powershell_cmd="powershell.exe -Command \"\$logs=\$(docker image list); \$logs | Out-File -FilePath '${WINDOWS_LOGS_DIR}\\docker_images.log'\""
# Retry up to 3 times to allow ssh keys to be properly propagated and
# stored.
for retry in {1..3}; do
if gcloud compute ssh --project "${PROJECT}" --zone "${ZONE}" "${node}" \
--command "$powershell_cmd"; then
break
else
sleep 10
fi
done
}
# Saves log files from diagnostics tool.(https://github.com/GoogleCloudPlatform/compute-image-tools/tree/master/cli_tools/diagnostics)
function save-windows-logs-via-diagnostics-tool() {
local node="${1}"
local dest_dir="${2}"
gcloud compute instances add-metadata "${node}" --metadata enable-diagnostics=true --project="${PROJECT}" --zone="${ZONE}"
local logs_archive_in_gcs
logs_archive_in_gcs=$(gcloud alpha compute diagnose export-logs "${node}" "--zone=${ZONE}" "--project=${PROJECT}" | tail -n 1)
local temp_local_path="${node}.zip"
for retry in {1..20}; do
if gsutil mv "${logs_archive_in_gcs}" "${temp_local_path}" > /dev/null 2>&1; then
echo "Downloaded diagnostics log from ${logs_archive_in_gcs}"
break
else
sleep 10
fi
done
if [[ -f "${temp_local_path}" ]]; then
unzip "${temp_local_path}" -d "${dest_dir}" > /dev/null
rm -f "${temp_local_path}"
fi
}
# Saves log files from SSH
function save-windows-logs-via-ssh() {
local node="${1}"
local dest_dir="${2}"
export-windows-docker-event-log "${node}"
export-windows-docker-images-list "${node}"
local remote_files=()
for file in "${windows_node_logfiles[@]}"; do
remote_files+=( "${WINDOWS_LOGS_DIR}\\${file}" )
done
remote_files+=( "${windows_node_otherfiles[@]}" )
# TODO(pjh, yujuhong): handle rotated logs and copying multiple files at the
# same time.
for remote_file in "${remote_files[@]}"; do
# Retry up to 3 times to allow ssh keys to be properly propagated and
# stored.
for retry in {1..3}; do
if gcloud compute scp --recurse --project "${PROJECT}" \
--zone "${ZONE}" "${node}:${remote_file}" "${dest_dir}" \
> /dev/null; then
break
else
sleep 10
fi
done
done
}
# Save log files and serial console output from Windows node $1 into local
# directory $2.
# This function shouldn't ever trigger errexit.
function save-logs-windows() {
local -r node="${1}"
local -r dest_dir="${2}"
if [[ ! "${gcloud_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
echo "Not saving logs for ${node}, Windows log dumping requires gcloud support"
return
fi
if [[ "${KUBERNETES_PROVIDER}" == "gke" ]]; then
save-windows-logs-via-diagnostics-tool "${node}" "${dest_dir}"
else
save-windows-logs-via-ssh "${node}" "${dest_dir}"
fi
# Serial port 1 contains the Windows console output.
gcloud compute instances get-serial-port-output --project "${PROJECT}" \
--zone "${ZONE}" --port 1 "${node}" > "${dest_dir}/serial-1.log" || true
}
# Execute a command in container $2 on node $1.
# Uses docker because the container may not ordinarily permit direct execution.
function run-in-docker-container() {
local node_name="$1"
local container="$2"
shift 2
log-dump-ssh "${node_name}" "docker exec \"\$(docker ps -f label=io.kubernetes.container.name=${container} --format \"{{.ID}}\")\" $*"
}
function dump_masters() {
local master_names=()
if [[ -n "${use_custom_instance_list}" ]]; then
while IFS='' read -r line; do master_names+=("$line"); done < <(log_dump_custom_get_instances master)
elif [[ ! "${master_ssh_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
echo "Master SSH not supported for ${KUBERNETES_PROVIDER}"
return
elif [[ -n "${KUBEMARK_MASTER_NAME:-}" ]]; then
master_names=( "${KUBEMARK_MASTER_NAME}" )
else
if ! (detect-master); then
echo 'Master not detected. Is the cluster up?'
return
fi
master_names=( "${MASTER_NAME}" )
fi
if [[ "${#master_names[@]}" == 0 ]]; then
echo 'No masters found?'
return
fi
proc=${max_dump_processes}
for master_name in "${master_names[@]}"; do
master_dir="${report_dir}/${master_name}"
mkdir -p "${master_dir}"
save-logs "${master_name}" "${master_dir}" "${master_logfiles}" "" "true" &
# We don't want to run more than ${max_dump_processes} at a time, so
# wait once we hit that many nodes. This isn't ideal, since one might
# take much longer than the others, but it should help.
proc=$((proc - 1))
if [[ proc -eq 0 ]]; then
proc=${max_dump_processes}
wait
fi
done
# Wait for any remaining processes.
if [[ proc -gt 0 && proc -lt ${max_dump_processes} ]]; then
wait
fi
}
# Dumps logs from nodes in the cluster. Linux nodes to dump logs from can be
# specified via $1 or $use_custom_instance_list. If not specified then the nodes
# to dump logs for will be detected using detect-node-names(); if Windows nodes
# are present then they will be detected and their logs will be dumped too.
function dump_nodes() {
local node_names=()
local windows_node_names=()
if [[ -n "${1:-}" ]]; then
echo 'Dumping logs for nodes provided as args to dump_nodes() function'
node_names=( "$@" )
elif [[ -n "${use_custom_instance_list}" ]]; then
echo 'Dumping logs for nodes provided by log_dump_custom_get_instances() function'
while IFS='' read -r line; do node_names+=("$line"); done < <(log_dump_custom_get_instances node)
elif [[ ! "${node_ssh_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
echo "Node SSH not supported for ${KUBERNETES_PROVIDER}"
return
else
echo 'Detecting nodes in the cluster'
detect-node-names &> /dev/null
if [[ -n "${NODE_NAMES:-}" ]]; then
node_names=( "${NODE_NAMES[@]}" )
fi
if [[ -n "${WINDOWS_NODE_NAMES:-}" ]]; then
windows_node_names=( "${WINDOWS_NODE_NAMES[@]}" )
fi
fi
if [[ "${#node_names[@]}" == 0 && "${#windows_node_names[@]}" == 0 ]]; then
echo 'No nodes found!'
return
fi
node_logfiles_all="${node_logfiles}"
if [[ "${ENABLE_HOLLOW_NODE_LOGS:-}" == "true" ]]; then
node_logfiles_all="${node_logfiles_all} ${hollow_node_logfiles}"
fi
linux_nodes_selected_for_logs=()
if [[ -n "${LOGDUMP_ONLY_N_RANDOM_NODES:-}" ]]; then
# We randomly choose 'LOGDUMP_ONLY_N_RANDOM_NODES' many nodes for fetching logs.
for index in $(shuf -i 0-$(( ${#node_names[*]} - 1 )) -n "${LOGDUMP_ONLY_N_RANDOM_NODES}")
do
linux_nodes_selected_for_logs+=("${node_names[$index]}")
done
else
linux_nodes_selected_for_logs=( "${node_names[@]}" )
fi
all_selected_nodes=( "${linux_nodes_selected_for_logs[@]}" )
all_selected_nodes+=( "${windows_node_names[@]}" )
proc=${max_dump_processes}
start="$(date +%s)"
# log_dump_ssh_timeout is the maximal number of seconds the log dumping over
# SSH operation can take. Please note that the logic enforcing the timeout
# is only a best effort. The actual time of the operation may be longer
# due to waiting for all the child processes below.
log_dump_ssh_timeout_seconds="${LOG_DUMP_SSH_TIMEOUT_SECONDS:-}"
for i in "${!all_selected_nodes[@]}"; do
node_name="${all_selected_nodes[$i]}"
node_dir="${report_dir}/${node_name}"
mkdir -p "${node_dir}"
if [[ "${i}" -lt "${#linux_nodes_selected_for_logs[@]}" ]]; then
# Save logs in the background. This speeds up things when there are
# many nodes.
save-logs "${node_name}" "${node_dir}" "${node_logfiles_all}" "${node_systemd_services}" &
else
save-logs-windows "${node_name}" "${node_dir}" &
fi
# We don't want to run more than ${max_dump_processes} at a time, so
# wait once we hit that many nodes. This isn't ideal, since one might
# take much longer than the others, but it should help.
proc=$((proc - 1))
if [[ proc -eq 0 ]]; then
proc=${max_dump_processes}
wait
now="$(date +%s)"
if [[ -n "${log_dump_ssh_timeout_seconds}" && $((now - start)) -gt ${log_dump_ssh_timeout_seconds} ]]; then
echo "WARNING: Hit timeout after ${log_dump_ssh_timeout_seconds} seconds, finishing log dumping over SSH shortly"
break
fi
fi
done
# Wait for any remaining processes.
if [[ proc -gt 0 && proc -lt ${max_dump_processes} ]]; then
wait
fi
}
# Collect names of nodes which didn't run logexporter successfully.
# This function examines NODE_NAMES but not WINDOWS_NODE_NAMES since logexporter
# does not run on Windows nodes.
#
# Note: This step is O(#nodes^2) as we check if each node is present in the list of succeeded nodes.
# Making it linear would add code complexity without much benefit (as it just takes ~1s for 5k nodes).
# Assumes:
# NODE_NAMES
# Sets:
# NON_LOGEXPORTED_NODES
function find_non_logexported_nodes() {
local file="${gcs_artifacts_dir}/logexported-nodes-registry"
echo "Listing marker files ($file) for successful nodes..."
succeeded_nodes=$(gsutil ls "${file}") || return 1
echo 'Successfully listed marker files for successful nodes'
NON_LOGEXPORTED_NODES=()
for node in "${NODE_NAMES[@]}"; do
if [[ ! "${succeeded_nodes}" =~ ${node} ]]; then
NON_LOGEXPORTED_NODES+=("${node}")
fi
done
}
# This function examines NODE_NAMES but not WINDOWS_NODE_NAMES since logexporter
# does not run on Windows nodes.
function dump_nodes_with_logexporter() {
if [[ -n "${use_custom_instance_list}" ]]; then
echo 'Dumping logs for nodes provided by log_dump_custom_get_instances() function'
NODE_NAMES=()
while IFS='' read -r line; do NODE_NAMES+=("$line"); done < <(log_dump_custom_get_instances node)
else
echo 'Detecting nodes in the cluster'
detect-node-names &> /dev/null
fi
if [[ -z "${NODE_NAMES:-}" ]]; then
echo 'No nodes found!'
return
fi
# Obtain parameters required by logexporter.
local -r service_account_credentials="$(base64 "${GOOGLE_APPLICATION_CREDENTIALS}" | tr -d '\n')"
local -r cloud_provider="${KUBERNETES_PROVIDER}"
local -r enable_hollow_node_logs="${ENABLE_HOLLOW_NODE_LOGS:-false}"
local -r logexport_sleep_seconds="$(( 90 + NUM_NODES / 3 ))"
if [[ -z "${ZONE_NODE_SELECTOR_DISABLED:-}" ]]; then
local -r node_selector="${ZONE_NODE_SELECTOR_LABEL:-topology.kubernetes.io/zone}: ${ZONE}"
fi
# Fill in the parameters in the logexporter daemonset template.
local -r tmp="${KUBE_TEMP}/logexporter"
local -r manifest_yaml="${tmp}/logexporter-daemonset.yaml"
mkdir -p "${tmp}"
cp "${KUBE_ROOT}/cluster/log-dump/logexporter-daemonset.yaml" "${manifest_yaml}"
sed -i'' -e "s@{{.NodeSelector}}@${node_selector:-}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.LogexporterNamespace}}@${logexporter_namespace}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.ServiceAccountCredentials}}@${service_account_credentials}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.CloudProvider}}@${cloud_provider}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.GCSPath}}@${gcs_artifacts_dir}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.EnableHollowNodeLogs}}@${enable_hollow_node_logs}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.DumpSystemdJournal}}@${dump_systemd_journal}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.ExtraLogFiles}}@${extra_log_files}@g" "${manifest_yaml}"
sed -i'' -e "s@{{.ExtraSystemdServices}}@${extra_systemd_services}@g" "${manifest_yaml}"
# Create the logexporter namespace, service-account secret and the logexporter daemonset within that namespace.
KUBECTL="${KUBE_ROOT}/cluster/kubectl.sh"
if ! "${KUBECTL}" create -f "${manifest_yaml}"; then
echo 'Failed to create logexporter daemonset.. falling back to logdump through SSH'
"${KUBECTL}" delete namespace "${logexporter_namespace}" || true
dump_nodes "${NODE_NAMES[@]}"
logexporter_failed=1
return
fi
# Periodically fetch list of already logexported nodes to verify
# if we aren't already done.
start="$(date +%s)"
while true; do
now="$(date +%s)"
if [[ $((now - start)) -gt ${logexport_sleep_seconds} ]]; then
echo 'Waiting for all nodes to be logexported timed out.'
break
fi
if find_non_logexported_nodes; then
if [[ -z "${NON_LOGEXPORTED_NODES:-}" ]]; then
break
fi
fi
sleep 15
done
# Store logs from logexporter pods to allow debugging log exporting process
# itself.
proc=${max_dump_processes}
"${KUBECTL}" get pods -n "${logexporter_namespace}" -o jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.spec.nodeName}{"\n"}{end}' | (while read -r pod node; do
echo "Fetching logs from ${pod} running on ${node}"
mkdir -p "${report_dir}/${node}"
"${KUBECTL}" logs -n "${logexporter_namespace}" "${pod}" > "${report_dir}/${node}/${pod}.log" &
# We don't want to run more than ${max_dump_processes} at a time, so
# wait once we hit that many nodes. This isn't ideal, since one might
# take much longer than the others, but it should help.
proc=$((proc - 1))
if [[ proc -eq 0 ]]; then
proc=${max_dump_processes}
wait
fi
# Wait for any remaining processes.
done; wait)
# List registry of marker files (of nodes whose logexporter succeeded) from GCS.
for retry in {1..10}; do
if find_non_logexported_nodes; then
break
else
echo "Attempt ${retry} failed to list marker files for successful nodes"
if [[ "${retry}" == 10 ]]; then
echo 'Final attempt to list marker files failed.. falling back to logdump through SSH'
"${KUBECTL}" delete namespace "${logexporter_namespace}" || true
dump_nodes "${NODE_NAMES[@]}"
logexporter_failed=1
return
fi
sleep 2
fi
done
failed_nodes=()
# The following if is needed, because defaulting for empty arrays
# seems to treat them as non-empty with single empty string.
if [[ -n "${NON_LOGEXPORTED_NODES:-}" ]]; then
for node in "${NON_LOGEXPORTED_NODES[@]:-}"; do
echo "Logexporter didn't succeed on node ${node}. Queuing it for logdump through SSH."
failed_nodes+=("${node}")
done
fi
# If less than a certain ratio of the nodes got logexported, report an error.
if [[ $(((${#NODE_NAMES[@]} - ${#failed_nodes[@]}) * 100)) -lt $((${#NODE_NAMES[@]} * log_dump_expected_success_percentage )) ]]; then
logexporter_failed=1
fi
# Delete the logexporter resources and dump logs for the failed nodes (if any) through SSH.
"${KUBECTL}" get pods --namespace "${logexporter_namespace}" || true
"${KUBECTL}" delete namespace "${logexporter_namespace}" || true
if [[ "${#failed_nodes[@]}" != 0 ]]; then
echo -e "Dumping logs through SSH for the following nodes:\n${failed_nodes[*]}"
dump_nodes "${failed_nodes[@]}"
fi
}
function detect_node_failures() {
if ! [[ "${gcloud_supported_providers}" =~ ${KUBERNETES_PROVIDER} ]]; then
return
fi
detect-node-names
if [[ "${KUBERNETES_PROVIDER}" == "gce" ]]; then
local all_instance_groups=("${INSTANCE_GROUPS[@]}" "${WINDOWS_INSTANCE_GROUPS[@]}")
else
local all_instance_groups=("${INSTANCE_GROUPS[@]}")
fi
if [ -z "${all_instance_groups:-}" ]; then
return
fi
for group in "${all_instance_groups[@]}"; do
local creation_timestamp
creation_timestamp=$(gcloud compute instance-groups managed describe \
"${group}" \
--project "${PROJECT}" \
--zone "${ZONE}" \
--format='value(creationTimestamp)')
echo "Failures for ${group} (if any):"
gcloud logging read --order=asc \
--format='table(timestamp,jsonPayload.resource.name,jsonPayload.event_subtype)' \
--project "${PROJECT}" \
"resource.type=\"gce_instance\"
logName=\"projects/${PROJECT}/logs/compute.googleapis.com%2Factivity_log\"
(jsonPayload.event_subtype=\"compute.instances.hostError\" OR jsonPayload.event_subtype=\"compute.instances.automaticRestart\")
jsonPayload.resource.name:\"${group}\"
timestamp >= \"${creation_timestamp}\""
done
}
function main() {
print-deprecation-note
setup
kube::util::ensure-temp-dir
# Copy master logs to artifacts dir locally (through SSH).
echo "Dumping logs from master locally to '${report_dir}'"
dump_masters
if [[ "${DUMP_ONLY_MASTER_LOGS:-}" == "true" ]]; then
echo 'Skipping dumping of node logs'
return
fi
# Copy logs from nodes to GCS directly or to artifacts dir locally (through SSH).
if [[ -n "${gcs_artifacts_dir}" ]]; then
echo "Dumping logs from nodes to GCS directly at '${gcs_artifacts_dir}' using logexporter"
dump_nodes_with_logexporter
else
echo "Dumping logs from nodes locally to '${report_dir}'"
dump_nodes
fi
detect_node_failures
if [[ ${logexporter_failed} -ne 0 && ${log_dump_expected_success_percentage} -gt 0 ]]; then
return 1
fi
}
main
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