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-rw-r--r--collectors/tc.plugin/Makefile.in617
-rw-r--r--collectors/tc.plugin/README.md13
-rw-r--r--collectors/tc.plugin/plugin_tc.c4
-rw-r--r--collectors/tc.plugin/tc-qos-helper.sh297
-rwxr-xr-xcollectors/tc.plugin/tc-qos-helper.sh.in10
5 files changed, 16 insertions, 925 deletions
diff --git a/collectors/tc.plugin/Makefile.in b/collectors/tc.plugin/Makefile.in
deleted file mode 100644
index 118de240c..000000000
--- a/collectors/tc.plugin/Makefile.in
+++ /dev/null
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- install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
- "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
- fi
-mostlyclean-generic:
-
-clean-generic:
- -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
-
-distclean-generic:
- -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
- -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-
-maintainer-clean-generic:
- @echo "This command is intended for maintainers to use"
- @echo "it deletes files that may require special tools to rebuild."
- -test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
-clean: clean-am
-
-clean-am: clean-generic mostlyclean-am
-
-distclean: distclean-am
- -rm -f Makefile
-distclean-am: clean-am distclean-generic
-
-dvi: dvi-am
-
-dvi-am:
-
-html: html-am
-
-html-am:
-
-info: info-am
-
-info-am:
-
-install-data-am: install-dist_pluginsSCRIPTS
-
-install-dvi: install-dvi-am
-
-install-dvi-am:
-
-install-exec-am:
-
-install-html: install-html-am
-
-install-html-am:
-
-install-info: install-info-am
-
-install-info-am:
-
-install-man:
-
-install-pdf: install-pdf-am
-
-install-pdf-am:
-
-install-ps: install-ps-am
-
-install-ps-am:
-
-installcheck-am:
-
-maintainer-clean: maintainer-clean-am
- -rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-generic
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am: uninstall-dist_pluginsSCRIPTS
-
-.MAKE: install-am install-strip
-
-.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
- ctags-am distclean distclean-generic distdir dvi dvi-am html \
- html-am info info-am install install-am install-data \
- install-data-am install-dist_pluginsSCRIPTS install-dvi \
- install-dvi-am install-exec install-exec-am install-html \
- install-html-am install-info install-info-am install-man \
- install-pdf install-pdf-am install-ps install-ps-am \
- install-strip installcheck installcheck-am installdirs \
- maintainer-clean maintainer-clean-generic mostlyclean \
- mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
- uninstall-am uninstall-dist_pluginsSCRIPTS
-
-.PRECIOUS: Makefile
-
-.in:
- if sed \
- -e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
- -e 's#[@]sbindir_POST@#$(sbindir)#g' \
- -e 's#[@]pluginsdir_POST@#$(pluginsdir)#g' \
- -e 's#[@]configdir_POST@#$(configdir)#g' \
- -e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
- -e 's#[@]cachedir_POST@#$(cachedir)#g' \
- -e 's#[@]registrydir_POST@#$(registrydir)#g' \
- -e 's#[@]varlibdir_POST@#$(varlibdir)#g' \
- $< > $@.tmp; then \
- mv "$@.tmp" "$@"; \
- else \
- rm -f "$@.tmp"; \
- false; \
- fi
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/collectors/tc.plugin/README.md b/collectors/tc.plugin/README.md
index 6e5306128..480076087 100644
--- a/collectors/tc.plugin/README.md
+++ b/collectors/tc.plugin/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "tc.plugin"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/tc.plugin/README.md
+-->
+
# tc.plugin
Live demo - **[see it in action here](https://registry.my-netdata.io/#menu_tc)** !
@@ -8,9 +13,9 @@ Netdata monitors `tc` QoS classes for all interfaces.
If you also use [FireQOS](http://firehol.org/tutorial/fireqos-new-user/) it will collect interface and class names.
-There is a [shell helper](tc-qos-helper.sh.in) for this (all parsing is done by the plugin in `C` code - this shell script is just a configuration for the command to run to get `tc` output).
+There is a [shell helper](https://raw.githubusercontent.com/netdata/netdata/master/collectors/tc.plugin/tc-qos-helper.sh.in) for this (all parsing is done by the plugin in `C` code - this shell script is just a configuration for the command to run to get `tc` output).
-The source of the tc plugin is [here](plugin_tc.c). It is somewhat complex, because a state machine was needed to keep track of all the `tc` classes, including the pseudo classes tc dynamically creates.
+The source of the tc plugin is [here](https://raw.githubusercontent.com/netdata/netdata/master/collectors/tc.plugin/plugin_tc.c). It is somewhat complex, because a state machine was needed to keep track of all the `tc` classes, including the pseudo classes tc dynamically creates.
## Motivation
@@ -62,7 +67,7 @@ QoS is about 2 features:
When your system is under a DDoS attack, it will get a lot more bandwidth compared to the one it can handle and probably your applications will crash. Setting a limit on the inbound traffic using QoS, will protect your servers (throttle the requests) and depending on the size of the attack may allow your legitimate users to access the server, while the attack is taking place.
- Using QoS together with a [SYNPROXY](../../collectors/proc.plugin/README.md) will provide a great degree of protection against most DDoS attacks. Actually when I wrote that article, a few folks tried to DDoS the Netdata demo site to see in real-time the SYNPROXY operation. They did not do it right, but anyway a great deal of requests reached the Netdata server. What saved Netdata was QoS. The Netdata demo server has QoS installed, so the requests were throttled and the server did not even reach the point of resource starvation. Read about it [here](../../collectors/proc.plugin/README.md).
+ Using QoS together with a [SYNPROXY](/collectors/proc.plugin/README.md) will provide a great degree of protection against most DDoS attacks. Actually when I wrote that article, a few folks tried to DDoS the Netdata demo site to see in real-time the SYNPROXY operation. They did not do it right, but anyway a great deal of requests reached the Netdata server. What saved Netdata was QoS. The Netdata demo server has QoS installed, so the requests were throttled and the server did not even reach the point of resource starvation. Read about it [here](/collectors/proc.plugin/README.md).
On top of all these, QoS is extremely light. You will configure it once, and this is it. It will not bother you again and it will not use any noticeable CPU resources, especially on application and database servers.
@@ -167,7 +172,7 @@ And this is what you are going to get:
## QoS Configuration with tc
-First, setup the tc rules in rc.local using commands to assign different DSCP markings to different classids. You can see one such example in [github issue #4563](https://github.com/netdata/netdata/issues/4563#issuecomment-455711973).
+First, setup the tc rules in rc.local using commands to assign different QoS markings to different classids. You can see one such example in [github issue #4563](https://github.com/netdata/netdata/issues/4563#issuecomment-455711973).
Then, map the classids to names by creating `/etc/iproute2/tc_cls`. For example:
diff --git a/collectors/tc.plugin/plugin_tc.c b/collectors/tc.plugin/plugin_tc.c
index 9245b0857..b92450efe 100644
--- a/collectors/tc.plugin/plugin_tc.c
+++ b/collectors/tc.plugin/plugin_tc.c
@@ -81,7 +81,7 @@ struct tc_device {
RRDSET *st_tokens;
RRDSET *st_ctokens;
- avl_tree classes_index;
+ avl_tree_type classes_index;
struct tc_class *classes;
struct tc_class *last_class;
@@ -102,7 +102,7 @@ static int tc_device_compare(void* a, void* b) {
else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
}
-avl_tree tc_device_root_index = {
+avl_tree_type tc_device_root_index = {
NULL,
tc_device_compare
};
diff --git a/collectors/tc.plugin/tc-qos-helper.sh b/collectors/tc.plugin/tc-qos-helper.sh
deleted file mode 100644
index c9e6727a0..000000000
--- a/collectors/tc.plugin/tc-qos-helper.sh
+++ /dev/null
@@ -1,297 +0,0 @@
-#!/usr/bin/env bash
-
-# netdata
-# real-time performance and health monitoring, done right!
-# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
-# SPDX-License-Identifier: GPL-3.0-or-later
-#
-# This script is a helper to allow netdata collect tc data.
-# tc output parsing has been implemented in C, inside netdata
-# This script allows setting names to dimensions.
-
-export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
-export LC_ALL=C
-
-# -----------------------------------------------------------------------------
-# logging functions
-
-PROGRAM_NAME="$(basename "$0")"
-PROGRAM_NAME="${PROGRAM_NAME/.plugin/}"
-
-logdate() {
- date "+%Y-%m-%d %H:%M:%S"
-}
-
-log() {
- local status="${1}"
- shift
-
- echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
-
-}
-
-warning() {
- log WARNING "${@}"
-}
-
-error() {
- log ERROR "${@}"
-}
-
-info() {
- log INFO "${@}"
-}
-
-fatal() {
- log FATAL "${@}"
- exit 1
-}
-
-debug=0
-debug() {
- [ $debug -eq 1 ] && log DEBUG "${@}"
-}
-
-# -----------------------------------------------------------------------------
-# find /var/run/fireqos
-
-# the default
-fireqos_run_dir="/var/run/fireqos"
-
-function realdir() {
- local r
- local t
- r="$1"
- t="$(readlink "$r")"
-
- while [ "$t" ]; do
- r=$(cd "$(dirname "$r")" && cd "$(dirname "$t")" && pwd -P)/$(basename "$t")
- t=$(readlink "$r")
- done
-
- dirname "$r"
-}
-
-if [ ! -d "${fireqos_run_dir}" ]; then
-
- # the fireqos executable - we will use it to find its config
- fireqos="$(command -v fireqos 2>/dev/null)"
-
- if [ -n "${fireqos}" ]; then
-
- fireqos_exec_dir="$(realdir "${fireqos}")"
-
- if [ -n "${fireqos_exec_dir}" ] && [ "${fireqos_exec_dir}" != "." ] && [ -f "${fireqos_exec_dir}/install.config" ]; then
- LOCALSTATEDIR=
- #shellcheck source=/dev/null
- source "${fireqos_exec_dir}/install.config"
-
- if [ -d "${LOCALSTATEDIR}/run/fireqos" ]; then
- fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
- else
- warning "FireQoS is installed as '${fireqos}', its installation config at '${fireqos_exec_dir}/install.config' specifies local state data at '${LOCALSTATEDIR}/run/fireqos', but this directory is not found or is not readable (check the permissions of its parents)."
- fi
- else
- warning "Although FireQoS is installed on this system as '${fireqos}', I cannot find/read its installation configuration at '${fireqos_exec_dir}/install.config'."
- fi
- else
- warning "FireQoS is not installed on this system. Use FireQoS to apply traffic QoS and expose the class names to netdata. Check https://github.com/netdata/netdata/tree/master/collectors/tc.plugin#tcplugin"
- fi
-fi
-
-# -----------------------------------------------------------------------------
-
-[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
-[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
-[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
-
-plugins_dir="${NETDATA_PLUGINS_DIR}"
-tc="$(command -v tc 2>/dev/null)"
-
-# -----------------------------------------------------------------------------
-# user configuration
-
-# time in seconds to refresh QoS class/qdisc names
-qos_get_class_names_every=120
-
-# time in seconds to exit - netdata will restart the script
-qos_exit_every=3600
-
-# what to use? classes or qdiscs?
-tc_show="qdisc" # can also be "class"
-
-# -----------------------------------------------------------------------------
-# check if we have a valid number for interval
-
-t=${1}
-update_every=$((t))
-[ $((update_every)) -lt 1 ] && update_every=${NETDATA_UPDATE_EVERY}
-[ $((update_every)) -lt 1 ] && update_every=1
-
-# -----------------------------------------------------------------------------
-# allow the user to override our defaults
-
-for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/tc-qos-helper.conf" "${NETDATA_USER_CONFIG_DIR}/tc-qos-helper.conf"; do
- if [ -f "${CONFIG}" ]; then
- info "Loading config file '${CONFIG}'..."
- #shellcheck source=/dev/null
- source "${CONFIG}" || error "Failed to load config file '${CONFIG}'."
- else
- warning "Cannot find file '${CONFIG}'."
- fi
-done
-
-case "${tc_show}" in
-qdisc | class) ;;
-
-*)
- error "tc_show variable can be either 'qdisc' or 'class' but is set to '${tc_show}'. Assuming it is 'qdisc'."
- tc_show="qdisc"
- ;;
-esac
-
-# -----------------------------------------------------------------------------
-# default sleep function
-
-LOOPSLEEPMS_LASTWORK=0
-loopsleepms() {
- sleep "$1"
-}
-
-# if found and included, this file overwrites loopsleepms()
-# with a high resolution timer function for precise looping.
-#shellcheck source=/dev/null
-. "${plugins_dir}/loopsleepms.sh.inc"
-
-# -----------------------------------------------------------------------------
-# final checks we can run
-
-if [ -z "${tc}" ] || [ ! -x "${tc}" ]; then
- fatal "cannot find command 'tc' in this system."
-fi
-
-tc_devices=
-fix_names=
-
-# -----------------------------------------------------------------------------
-
-setclassname() {
- if [ "${tc_show}" = "qdisc" ]; then
- echo "SETCLASSNAME $4 $2"
- else
- echo "SETCLASSNAME $3 $2"
- fi
-}
-
-show_tc_cls() {
- [ "${tc_show}" = "qdisc" ] && return 1
-
- local x="${1}"
-
- if [ -f /etc/iproute2/tc_cls ]; then
- local classid name rest
- while read -r classid name rest; do
- if [ -z "${classid}" ] ||
- [ -z "${name}" ] ||
- [ "${classid}" = "#" ] ||
- [ "${name}" = "#" ] ||
- [ "${classid:0:1}" = "#" ] ||
- [ "${name:0:1}" = "#" ]; then
- continue
- fi
- setclassname "" "${name}" "${classid}"
- done </etc/iproute2/tc_cls
- return 0
- fi
- return 1
-}
-
-show_fireqos_names() {
- local x="${1}" name n interface_dev interface_classes_monitor
-
- if [ -f "${fireqos_run_dir}/ifaces/${x}" ]; then
- name="$(<"${fireqos_run_dir}/ifaces/${x}")"
- echo "SETDEVICENAME ${name}"
-
- #shellcheck source=/dev/null
- source "${fireqos_run_dir}/${name}.conf"
- for n in ${interface_classes_monitor}; do
- # shellcheck disable=SC2086
- setclassname ${n//|/ }
- done
- [ -n "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
-
- return 0
- fi
-
- return 1
-}
-
-show_tc() {
- local x="${1}"
-
- echo "BEGIN ${x}"
-
- # netdata can parse the output of tc
- ${tc} -s ${tc_show} show dev "${x}"
-
- # check FireQOS names for classes
- if [ -n "${fix_names}" ]; then
- show_fireqos_names "${x}" || show_tc_cls "${x}"
- fi
-
- echo "END ${x}"
-}
-
-find_tc_devices() {
- local count=0 devs dev rest l
-
- # find all the devices in the system
- # without forking
- while IFS=":| " read -r dev rest; do
- count=$((count + 1))
- [ ${count} -le 2 ] && continue
- devs="${devs} ${dev}"
- done </proc/net/dev
-
- # from all the devices find the ones
- # that have QoS defined
- # unfortunately, one fork per device cannot be avoided
- tc_devices=
- for dev in ${devs}; do
- l="$(${tc} class show dev "${dev}" 2>/dev/null)"
- [ -n "${l}" ] && tc_devices="${tc_devices} ${dev}"
- done
-}
-
-# update devices and class names
-# once every 2 minutes
-names_every=$((qos_get_class_names_every / update_every))
-
-# exit this script every hour
-# it will be restarted automatically
-exit_after=$((qos_exit_every / update_every))
-
-c=0
-gc=0
-while true; do
- fix_names=
- c=$((c + 1))
- gc=$((gc + 1))
-
- if [ ${c} -le 1 ] || [ ${c} -ge ${names_every} ]; then
- c=1
- fix_names="YES"
- find_tc_devices
- fi
-
- for d in ${tc_devices}; do
- show_tc "${d}"
- done
-
- echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}"
-
- loopsleepms ${update_every}
-
- [ ${gc} -gt ${exit_after} ] && exit 0
-done
diff --git a/collectors/tc.plugin/tc-qos-helper.sh.in b/collectors/tc.plugin/tc-qos-helper.sh.in
index 50555c8b2..65d33153b 100755
--- a/collectors/tc.plugin/tc-qos-helper.sh.in
+++ b/collectors/tc.plugin/tc-qos-helper.sh.in
@@ -211,7 +211,7 @@ show_fireqos_names() {
if [ -f "${fireqos_run_dir}/ifaces/${x}" ]; then
name="$(<"${fireqos_run_dir}/ifaces/${x}")"
- echo "SETDEVICENAME ${name}"
+ echo "SETDEVICENAME ${name}" || exit
#shellcheck source=/dev/null
source "${fireqos_run_dir}/${name}.conf"
@@ -219,7 +219,7 @@ show_fireqos_names() {
# shellcheck disable=SC2086
setclassname ${n//|/ }
done
- [ -n "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
+ [ -n "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}" || exit
return 0
fi
@@ -230,7 +230,7 @@ show_fireqos_names() {
show_tc() {
local x="${1}"
- echo "BEGIN ${x}"
+ echo "BEGIN ${x}" || exit
# netdata can parse the output of tc
${tc} -s ${tc_show} show dev "${x}"
@@ -240,7 +240,7 @@ show_tc() {
show_fireqos_names "${x}" || show_tc_cls "${x}"
fi
- echo "END ${x}"
+ echo "END ${x}" || exit
}
find_tc_devices() {
@@ -289,7 +289,7 @@ while true; do
show_tc "${d}"
done
- echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}"
+ echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}" || exit
loopsleepms ${update_every}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-07 23:02:16 +0000