Adding upstream version 1.12.1.upstream/1.12.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 1114 insertions, 20 deletions

diff --git a/collectors/cgroups.plugin/Makefile.in b/collectors/cgroups.plugin/Makefile.in
new file mode 100644
index 000000000..36afee7ec
--- /dev/null
+++ b/collectors/cgroups.plugin/Makefile.in
@@ -0,0 +1,565 @@
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+
+.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
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#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/cgroups.plugin/README.md b/collectors/cgroups.plugin/README.md
index d4f6d8ce0..403ab841f 100644
--- a/collectors/cgroups.plugin/README.md
+++ b/collectors/cgroups.plugin/README.md
@@ -89,6 +89,10 @@ The whole point for the additional pattern list, is to limit the number of times
 
 The above pattern list is matched against the path of the cgroup. For matched cgroups, netdata calls the script [cgroup-name.sh](cgroup-name.sh.in) to get its name. This script queries `docker`, or applies heuristics to find give a name for the cgroup.
 
+### alarms
+
+CPU and memory limits are watched and used to rise alarms. Memory usage for every cgroup is checked against `ram` and `ram+swap` limits. CPU usage for every cgroup is checked against `cpuset.cpus` and `cpu.cfs_period_us` + `cpu.cfs_quota_us` pair assigned for the cgroup. Configuration for the alarms is available in `health.d/cgroups.conf` file.
+
 ## Monitoring systemd services
 
 netdata monitors **systemd services**. Example:
diff --git a/collectors/cgroups.plugin/cgroup-name.sh b/collectors/cgroups.plugin/cgroup-name.sh
new file mode 100644
index 000000000..ba428131d
--- /dev/null
+++ b/collectors/cgroups.plugin/cgroup-name.sh
@@ -0,0 +1,176 @@
+#!/usr/bin/env bash
+#shellcheck disable=SC2001
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to find a better name for cgroups
+#
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+	date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+	local status="${1}"
+	shift
+
+	echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+	log WARNING "${@}"
+}
+
+error() {
+	log ERROR "${@}"
+}
+
+info() {
+	log INFO "${@}"
+}
+
+fatal() {
+	log FATAL "${@}"
+	exit 1
+}
+
+function docker_get_name_classic() {
+	local id="${1}"
+	info "Running command: docker ps --filter=id=\"${id}\" --format=\"{{.Names}}\""
+	NAME="$(docker ps --filter=id="${id}" --format="{{.Names}}")"
+	return 0
+}
+
+function docker_get_name_api() {
+	local id="${1}"
+	if [ ! -S "${DOCKER_HOST}" ]; then
+		warning "Can't find ${DOCKER_HOST}"
+		return 1
+	fi
+	info "Running API command: /containers/${id}/json"
+	JSON=$(echo -e "GET /containers/${id}/json HTTP/1.0\\r\\n" | nc -U "${DOCKER_HOST}" | grep '^{.*')
+	NAME=$(echo "$JSON" | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
+	return 0
+}
+
+function docker_get_name() {
+	local id="${1}"
+	if hash docker 2>/dev/null; then
+		docker_get_name_classic "${id}"
+	else
+		docker_get_name_api "${id}" || docker_get_name_classic "${id}"
+	fi
+	if [ -z "${NAME}" ]; then
+		warning "cannot find the name of docker container '${id}'"
+		NAME="${id:0:12}"
+	else
+		info "docker container '${id}' is named '${NAME}'"
+	fi
+}
+
+function docker_validate_id() {
+	local id="${1}"
+	if [ -n "${id}" ] && { [ ${#id} -eq 64 ] || [ ${#id} -eq 12 ]; }; then
+		docker_get_name "${id}"
+	else
+		error "a docker id cannot be extracted from docker cgroup '${CGROUP}'."
+	fi
+}
+
+# -----------------------------------------------------------------------------
+
+[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
+
+DOCKER_HOST="${DOCKER_HOST:=/var/run/docker.sock}"
+CGROUP="${1}"
+NAME=
+
+# -----------------------------------------------------------------------------
+
+if [ -z "${CGROUP}" ]; then
+	fatal "called without a cgroup name. Nothing to do."
+fi
+
+for CONFIG in "${NETDATA_USER_CONFIG_DIR}/cgroups-names.conf" "${NETDATA_STOCK_CONFIG_DIR}/cgroups-names.conf"; do
+	if [ -f "${CONFIG}" ]; then
+		NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed 's/[[:space:]]\+/ /g' | cut -d ' ' -f 2)"
+		if [ -z "${NAME}" ]; then
+			info "cannot find cgroup '${CGROUP}' in '${CONFIG}'."
+		else
+			break
+		fi
+	#else
+	#   info "configuration file '${CONFIG}' is not available."
+	fi
+done
+
+if [ -z "${NAME}" ]; then
+	if [[ ${CGROUP} =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
+		# docker containers
+		#shellcheck disable=SC1117
+		DOCKERID="$(echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
+		docker_validate_id "${DOCKERID}"
+
+	elif [[ ${CGROUP} =~ ^.*ecs[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]; then
+		# ECS
+		#shellcheck disable=SC1117
+		DOCKERID="$(echo "${CGROUP}" | sed "s|^.*ecs[-_/].*[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|")"
+		docker_validate_id "${DOCKERID}"
+
+	elif [[ ${CGROUP} =~ ^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]+[_/][a-fA-F0-9]+$ ]]; then
+		# kubernetes
+		#shellcheck disable=SC1117
+		DOCKERID="$(echo "${CGROUP}" | sed "s|^.*kubepods[_/].*[_/]pod[a-fA-F0-9-]\+[_/]\([a-fA-F0-9]\+\)$|\1|")"
+		docker_validate_id "${DOCKERID}"
+
+	elif [[ ${CGROUP} =~ machine.slice[_/].*\.service ]]; then
+		# systemd-nspawn
+		NAME="$(echo "${CGROUP}" | sed 's/.*machine.slice[_\/]\(.*\)\.service/\1/g')"
+
+	elif [[ ${CGROUP} =~ machine.slice_machine.*-qemu ]]; then
+		# libvirtd / qemu virtual machines
+		# NAME="$(echo ${CGROUP} | sed 's/machine.slice_machine.*-qemu//; s/\/x2d//; s/\/x2d/\-/g; s/\.scope//g')"
+		NAME="qemu_$(echo "${CGROUP}" | sed 's/machine.slice_machine.*-qemu//; s/\/x2d[[:digit:]]*//; s/\/x2d//g; s/\.scope//g')"
+
+	elif [[ ${CGROUP} =~ machine_.*\.libvirt-qemu ]]; then
+		# libvirtd / qemu virtual machines
+		NAME="qemu_$(echo "${CGROUP}" | sed 's/^machine_//; s/\.libvirt-qemu$//; s/-/_/;')"
+
+	elif [[ ${CGROUP} =~ qemu.slice_([0-9]+).scope && -d /etc/pve ]]; then
+		# Proxmox VMs
+
+		FILENAME="/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf"
+		if [[ -f $FILENAME && -r $FILENAME ]]; then
+			NAME="qemu_$(grep -e '^name: ' "/etc/pve/qemu-server/${BASH_REMATCH[1]}.conf" | head -1 | sed -rn 's|\s*name\s*:\s*(.*)?$|\1|p')"
+		else
+			error "proxmox config file missing ${FILENAME} or netdata does not have read access.  Please ensure netdata is a member of www-data group."
+		fi
+	elif [[ ${CGROUP} =~ lxc_([0-9]+) && -d /etc/pve ]]; then
+		# Proxmox Containers (LXC)
+
+		FILENAME="/etc/pve/lxc/${BASH_REMATCH[1]}.conf"
+		if [[ -f ${FILENAME} && -r ${FILENAME} ]]; then
+			NAME=$(grep -e '^hostname: ' "/etc/pve/lxc/${BASH_REMATCH[1]}.conf" | head -1 | sed -rn 's|\s*hostname\s*:\s*(.*)?$|\1|p')
+		else
+			error "proxmox config file missing ${FILENAME} or netdata does not have read access.  Please ensure netdata is a member of www-data group."
+		fi
+	fi
+
+	[ -z "${NAME}" ] && NAME="${CGROUP}"
+	[ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}"
+fi
+
+info "cgroup '${CGROUP}' is called '${NAME}'"
+echo "${NAME}"
diff --git a/collectors/cgroups.plugin/cgroup-network-helper.sh b/collectors/cgroups.plugin/cgroup-network-helper.sh
index 666f02fc8..6905ce638 100755
--- a/collectors/cgroups.plugin/cgroup-network-helper.sh
+++ b/collectors/cgroups.plugin/cgroup-network-helper.sh
@@ -60,7 +60,7 @@ fatal() {
     exit 1
 }
 
-debug=0
+debug=${NETDATA_CGROUP_NETWORK_HELPER_DEBUG=0}
 debug() {
     [ "${debug}" = "1" ] && log DEBUG "${@}"
 }
@@ -132,6 +132,8 @@ find_tun_tap_interfaces_for_cgroup() {
         do
             proc_pid_fdinfo_iff "${p}"
         done
+    else
+        debug "Cannot find file '${c}/emulator/cgroup.procs', not searching for tun/tap interfaces."
     fi
 }
 
@@ -185,6 +187,39 @@ virsh_find_all_interfaces_for_cgroup() {
 }
 
 # -----------------------------------------------------------------------------
+# netnsid detected interfaces
+
+netnsid_find_all_interfaces_for_pid() {
+    local pid="${1}"
+    [ -z "${pid}" ] && return 1
+
+    local nsid=$(lsns -t net -p ${pid} -o NETNSID -nr)
+    [ -z "${nsid}" -o "${nsid}" = "unassigned" ] && return 1
+
+    set_source "netnsid"
+    ip link show |\
+        grep -B 1 -E " link-netnsid ${nsid}($| )" |\
+        sed -n -e "s|^[[:space:]]*[0-9]\+:[[:space:]]\+\([A-Za-z0-9_]\+\)\(@[A-Za-z0-9_]\+\)*:[[:space:]].*$|\1|p"
+}
+
+netnsid_find_all_interfaces_for_cgroup() {
+    local c="${1}" # the cgroup path
+
+    # for each pid of the cgroup
+    # find any tun/tap devices linked to the pid
+    if [ -f "${c}/cgroup.procs" ]
+    then
+        local p
+        for p in $(< "${c}/cgroup.procs" )
+        do
+            netnsid_find_all_interfaces_for_pid "${p}"
+        done
+    else
+        debug "Cannot find file '${c}/cgroup.procs', not searching for netnsid interfaces."
+    fi
+}
+
+# -----------------------------------------------------------------------------
 
 find_all_interfaces_of_pid_or_cgroup() {
     local p="${1}" c="${2}" # the pid and the cgroup path
@@ -194,6 +229,7 @@ find_all_interfaces_of_pid_or_cgroup() {
         # we have been called with a pid
 
         proc_pid_fdinfo_iff "${p}"
+        netnsid_find_all_interfaces_for_pid "${p}"
 
     elif [ ! -z "${c}" ]
     then
@@ -203,6 +239,7 @@ find_all_interfaces_of_pid_or_cgroup() {
 
         find_tun_tap_interfaces_for_cgroup "${c}"
         virsh_find_all_interfaces_for_cgroup "${c}"
+        netnsid_find_all_interfaces_for_cgroup "${c}"
 
     else
 
diff --git a/collectors/cgroups.plugin/cgroup-network.c b/collectors/cgroups.plugin/cgroup-network.c
index 5aeb9a59a..87cb5ef12 100644
--- a/collectors/cgroups.plugin/cgroup-network.c
+++ b/collectors/cgroups.plugin/cgroup-network.c
@@ -86,13 +86,18 @@ unsigned int read_iface_ifindex(const char *prefix, const char *iface) {
     return (unsigned int)ifindex;
 }
 
-struct iface *read_proc_net_dev(const char *prefix) {
+struct iface *read_proc_net_dev(const char *scope, const char *prefix) {
     if(!prefix) prefix = "";
 
     procfile *ff = NULL;
     char filename[FILENAME_MAX + 1];
 
     snprintfz(filename, FILENAME_MAX, "%s%s", prefix, (*prefix)?"/proc/1/net/dev":"/proc/net/dev");
+
+#ifdef NETDATA_INTERNAL_CHECKS
+    info("parsing '%s'", filename);
+#endif
+
     ff = procfile_open(filename, " \t,:|", PROCFILE_FLAG_DEFAULT);
     if(unlikely(!ff)) {
         error("Cannot open file '%s'", filename);
@@ -117,6 +122,10 @@ struct iface *read_proc_net_dev(const char *prefix) {
         t->iflink  = read_iface_iflink(prefix, t->device);
         t->next = root;
         root = t;
+
+#ifdef NETDATA_INTERNAL_CHECKS
+        info("added %s interface '%s', ifindex %u, iflink %u", scope, t->device, t->ifindex, t->iflink);
+#endif
     }
 
     procfile_close(ff);
@@ -240,7 +249,7 @@ int switch_namespace(const char *prefix, pid_t pid) {
     // This code cannot switch user namespace (it can all the other namespaces)
     // Fortunately, we don't need to switch user namespaces.
 
-    int pass, errors = 0;
+    int pass;
     for(pass = 0; pass < 2 ;pass++) {
         for(i = 0; all_ns[i].name ; i++) {
             if (all_ns[i].fd != -1 && all_ns[i].status == -1) {
@@ -248,7 +257,6 @@ int switch_namespace(const char *prefix, pid_t pid) {
                     if(pass == 1) {
                         all_ns[i].status = 0;
                         error("Cannot switch to %s namespace of pid %d", all_ns[i].name, (int) pid);
-                        errors++;
                     }
                 }
                 else
@@ -324,6 +332,11 @@ pid_t read_pid_from_cgroup_file(const char *filename) {
     }
 
     fclose(fp);
+
+#ifdef NETDATA_INTERNAL_CHECKS
+    if(pid > 0) info("found pid %d on file '%s'", pid, filename);
+#endif
+
     return pid;
 }
 
@@ -381,6 +394,10 @@ struct found_device {
 } *detected_devices = NULL;
 
 void add_device(const char *host, const char *guest) {
+#ifdef NETDATA_INTERNAL_CHECKS
+    info("adding device with host '%s', guest '%s'", host, guest);
+#endif
+
     uint32_t hash = simple_hash(host);
 
     if(guest && (!*guest || strcmp(host, guest) == 0))
@@ -388,10 +405,12 @@ void add_device(const char *host, const char *guest) {
 
     struct found_device *f;
     for(f = detected_devices; f ; f = f->next) {
-        if(f->host_device_hash == hash && strcmp(host, f->host_device) == 0) {
+        if(f->host_device_hash == hash && !strcmp(host, f->host_device)) {
 
-            if(guest && !f->guest_device)
+            if(guest && (!f->guest_device || !strcmp(f->host_device, f->guest_device))) {
+                if(f->guest_device) freez((void *)f->guest_device);
                 f->guest_device = strdupz(guest);
+            }
 
             return;
         }
@@ -423,9 +442,10 @@ int send_devices(void) {
 // since it switches namespaces, so after this call, everything is different!
 
 void detect_veth_interfaces(pid_t pid) {
-    struct iface *host = NULL, *cgroup = NULL, *h, *c;
+    struct iface *cgroup = NULL;
+    struct iface *host, *h, *c;
 
-    host = read_proc_net_dev(netdata_configured_host_prefix);
+    host = read_proc_net_dev("host", netdata_configured_host_prefix);
     if(!host) {
         errno = 0;
         error("cannot read host interface list.");
@@ -444,7 +464,11 @@ void detect_veth_interfaces(pid_t pid) {
         goto cleanup;
     }
 
-    cgroup = read_proc_net_dev(NULL);
+#ifdef NETDATA_INTERNAL_CHECKS
+    info("switched to namespaces of pid %d", pid);
+#endif
+
+    cgroup = read_proc_net_dev("cgroup", NULL);
     if(!cgroup) {
         errno = 0;
         error("cannot read cgroup interface list.");
diff --git a/collectors/cgroups.plugin/sys_fs_cgroup.c b/collectors/cgroups.plugin/sys_fs_cgroup.c
index f8e5167ff..41a5af31e 100644
--- a/collectors/cgroups.plugin/sys_fs_cgroup.c
+++ b/collectors/cgroups.plugin/sys_fs_cgroup.c
@@ -39,6 +39,7 @@ static int cgroup_recheck_zero_mem_failcnt_every_iterations = 10;
 static int cgroup_recheck_zero_mem_detailed_every_iterations = 10;
 
 static char *cgroup_cpuacct_base = NULL;
+static char *cgroup_cpuset_base = NULL;
 static char *cgroup_blkio_base = NULL;
 static char *cgroup_memory_base = NULL;
 static char *cgroup_devices_base = NULL;
@@ -114,6 +115,16 @@ void read_cgroup_plugin_configuration() {
     snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
     cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
 
+    mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuset");
+    if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuset");
+    if(!mi) {
+        error("CGROUP: cannot find cpuset mountinfo. Assuming default: /sys/fs/cgroup/cpuset");
+        s = "/sys/fs/cgroup/cpuset";
+    }
+    else s = mi->mount_point;
+    snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
+    cgroup_cpuset_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuset", filename);
+
     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio");
     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
     if(!mi) {
@@ -391,12 +402,14 @@ struct cgroup {
 
     // per cgroup charts
     RRDSET *st_cpu;
+    RRDSET *st_cpu_limit;
     RRDSET *st_cpu_per_core;
     RRDSET *st_mem;
     RRDSET *st_writeback;
     RRDSET *st_mem_activity;
     RRDSET *st_pgfaults;
     RRDSET *st_mem_usage;
+    RRDSET *st_mem_usage_limit;
     RRDSET *st_mem_failcnt;
     RRDSET *st_io;
     RRDSET *st_serviced_ops;
@@ -405,6 +418,27 @@ struct cgroup {
     RRDSET *st_queued_ops;
     RRDSET *st_merged_ops;
 
+    // per cgroup chart variables
+    char *filename_cpuset_cpus;
+    unsigned long long cpuset_cpus;
+
+    char *filename_cpu_cfs_period;
+    unsigned long long cpu_cfs_period;
+
+    char *filename_cpu_cfs_quota;
+    unsigned long long cpu_cfs_quota;
+
+    RRDSETVAR *chart_var_cpu_limit;
+    calculated_number prev_cpu_usage;
+
+    char *filename_memory_limit;
+    unsigned long long memory_limit;
+    RRDSETVAR *chart_var_memory_limit;
+
+    char *filename_memoryswap_limit;
+    unsigned long long memoryswap_limit;
+    RRDSETVAR *chart_var_memoryswap_limit;
+
     // services
     RRDDIM *rd_cpu;
     RRDDIM *rd_mem_usage;
@@ -867,14 +901,15 @@ static inline void cgroup_get_chart_name(struct cgroup *cg) {
         if(s && *s && *s != '\n') {
             debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
 
-            trim(s);
+            s = trim(s);
+            if (s) {
+                freez(cg->chart_title);
+                cg->chart_title = cgroup_title_strdupz(s);
 
-            freez(cg->chart_title);
-            cg->chart_title = cgroup_title_strdupz(s);
-
-            freez(cg->chart_id);
-            cg->chart_id = cgroup_chart_id_strdupz(s);
-            cg->hash_chart = simple_hash(cg->chart_id);
+                freez(cg->chart_id);
+                cg->chart_id = cgroup_chart_id_strdupz(s);
+                cg->hash_chart = simple_hash(cg->chart_id);
+            }
         }
     }
     else
@@ -1008,12 +1043,14 @@ static inline void cgroup_free(struct cgroup *cg) {
     debug(D_CGROUP, "Removing cgroup '%s' with chart id '%s' (was %s and %s)", cg->id, cg->chart_id, (cg->enabled)?"enabled":"disabled", (cg->available)?"available":"not available");
 
     if(cg->st_cpu)                   rrdset_is_obsolete(cg->st_cpu);
+    if(cg->st_cpu_limit)             rrdset_is_obsolete(cg->st_cpu_limit);
     if(cg->st_cpu_per_core)          rrdset_is_obsolete(cg->st_cpu_per_core);
     if(cg->st_mem)                   rrdset_is_obsolete(cg->st_mem);
     if(cg->st_writeback)             rrdset_is_obsolete(cg->st_writeback);
     if(cg->st_mem_activity)          rrdset_is_obsolete(cg->st_mem_activity);
     if(cg->st_pgfaults)              rrdset_is_obsolete(cg->st_pgfaults);
     if(cg->st_mem_usage)             rrdset_is_obsolete(cg->st_mem_usage);
+    if (cg->st_mem_usage_limit)      rrdset_is_obsolete(cg->st_mem_usage_limit);
     if(cg->st_mem_failcnt)           rrdset_is_obsolete(cg->st_mem_failcnt);
     if(cg->st_io)                    rrdset_is_obsolete(cg->st_io);
     if(cg->st_serviced_ops)          rrdset_is_obsolete(cg->st_serviced_ops);
@@ -1022,6 +1059,12 @@ static inline void cgroup_free(struct cgroup *cg) {
     if(cg->st_queued_ops)            rrdset_is_obsolete(cg->st_queued_ops);
     if(cg->st_merged_ops)            rrdset_is_obsolete(cg->st_merged_ops);
 
+    freez(cg->filename_cpuset_cpus);
+    freez(cg->filename_cpu_cfs_period);
+    freez(cg->filename_cpu_cfs_quota);
+    freez(cg->filename_memory_limit);
+    freez(cg->filename_memoryswap_limit);
+
     free_cgroup_network_interfaces(cg);
 
     freez(cg->cpuacct_usage.cpu_percpu);
@@ -1272,6 +1315,12 @@ static inline void find_all_cgroups() {
             if(likely(stat(filename, &buf) != -1)) {
                 cg->cpuacct_stat.filename = strdupz(filename);
                 cg->cpuacct_stat.enabled = cgroup_enable_cpuacct_stat;
+                snprintfz(filename, FILENAME_MAX, "%s%s/cpuset.cpus", cgroup_cpuset_base, cg->id);
+                cg->filename_cpuset_cpus = strdupz(filename);
+                snprintfz(filename, FILENAME_MAX, "%s%s/cpu.cfs_period_us", cgroup_cpuacct_base, cg->id);
+                cg->filename_cpu_cfs_period = strdupz(filename);
+                snprintfz(filename, FILENAME_MAX, "%s%s/cpu.cfs_quota_us", cgroup_cpuacct_base, cg->id);
+                cg->filename_cpu_cfs_quota = strdupz(filename);
                 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
             }
             else
@@ -1306,16 +1355,20 @@ static inline void find_all_cgroups() {
                 cg->memory.filename_usage_in_bytes = strdupz(filename);
                 cg->memory.enabled_usage_in_bytes = cgroup_enable_memory;
                 debug(D_CGROUP, "memory.usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_usage_in_bytes);
+                snprintfz(filename, FILENAME_MAX, "%s%s/memory.limit_in_bytes", cgroup_memory_base, cg->id);
+                cg->filename_memory_limit = strdupz(filename);
             }
             else
                 debug(D_CGROUP, "memory.usage_in_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
         }
 
         if(unlikely(cgroup_enable_swap && !cg->memory.filename_msw_usage_in_bytes)) {
-            snprintfz(filename, FILENAME_MAX, "%s%s/memory.msw_usage_in_bytes", cgroup_memory_base, cg->id);
+            snprintfz(filename, FILENAME_MAX, "%s%s/memory.memsw.usage_in_bytes", cgroup_memory_base, cg->id);
             if(likely(stat(filename, &buf) != -1)) {
                 cg->memory.filename_msw_usage_in_bytes = strdupz(filename);
                 cg->memory.enabled_msw_usage_in_bytes = cgroup_enable_swap;
+                snprintfz(filename, FILENAME_MAX, "%s%s/memory.memsw.limit_in_bytes", cgroup_memory_base, cg->id);
+                cg->filename_memoryswap_limit = strdupz(filename);
                 debug(D_CGROUP, "memory.msw_usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_msw_usage_in_bytes);
             }
             else
@@ -1465,7 +1518,7 @@ void update_systemd_services_charts(
                     , "cpu"
                     , "services.cpu"
                     , title
-                    , "%"
+                    , "percentage"
                     , PLUGIN_CGROUPS_NAME
                     , PLUGIN_CGROUPS_MODULE_SYSTEMD_NAME
                     , NETDATA_CHART_PRIO_CGROUPS_SYSTEMD
@@ -2197,6 +2250,96 @@ static inline char *cgroup_chart_type(char *buffer, const char *id, size_t len)
     return buffer;
 }
 
+static inline unsigned long long cpuset_str2ull(char **s) {
+    unsigned long long n = 0;
+    char c;
+    for(c = **s; c >= '0' && c <= '9' ; c = *(++*s)) {
+        n *= 10;
+        n += c - '0';
+    }
+    return n;
+}
+
+static inline void update_cpu_limits(char **filename, unsigned long long *value, struct cgroup *cg) {
+    if(*filename) {
+        int ret = -1;
+
+        if(value == &cg->cpuset_cpus) {
+            static char *buf = NULL;
+            static size_t buf_size = 0;
+
+            if(!buf) {
+                buf_size = 100U + 6 * get_system_cpus(); // taken from kernel/cgroup/cpuset.c
+                buf = mallocz(buf_size + 1);
+            }
+
+            ret = read_file(*filename, buf, buf_size);
+
+            if(!ret) {
+                char *s = buf;
+                unsigned long long ncpus = 0;
+
+                // parse the cpuset string and calculate the number of cpus the cgroup is allowed to use
+                while(*s) {
+                    unsigned long long n = cpuset_str2ull(&s);
+                    if(*s == ',') {
+                        s++;
+                        ncpus++;
+                        continue;
+                    }
+                    if(*s == '-') {
+                        s++;
+                        unsigned long long m = cpuset_str2ull(&s);
+                        ncpus += m - n + 1; // calculate the number of cpus in the region
+                    }
+                    s++;
+                }
+
+                if(likely(ncpus)) *value = ncpus;
+            }
+        }
+        else if(value == &cg->cpu_cfs_period) {
+            ret = read_single_number_file(*filename, value);
+        }
+        else if(value == &cg->cpu_cfs_quota) {
+            ret = read_single_number_file(*filename, value);
+        }
+        else ret = -1;
+
+        if(ret) {
+            error("Cannot refresh cgroup %s cpu limit by reading '%s'. Will not update its limit anymore.", cg->id, *filename);
+            freez(*filename);
+            *filename = NULL;
+        }
+    }
+}
+
+static inline int update_memory_limits(char **filename, RRDSETVAR **chart_var, unsigned long long *value, const char *chart_var_name, struct cgroup *cg) {
+    if(*filename) {
+        if(unlikely(!*chart_var)) {
+            *chart_var = rrdsetvar_custom_chart_variable_create(cg->st_mem_usage, chart_var_name);
+            if(!*chart_var) {
+                error("Cannot create cgroup %s chart variable '%s'. Will not update its limit anymore.", cg->id, chart_var_name);
+                freez(*filename);
+                *filename = NULL;
+            }
+        }
+
+        if(*filename && *chart_var) {
+            if(read_single_number_file(*filename, value)) {
+                error("Cannot refresh cgroup %s memory limit by reading '%s'. Will not update its limit anymore.", cg->id, *filename);
+                freez(*filename);
+                *filename = NULL;
+            }
+            else {
+                rrdsetvar_custom_chart_variable_set(*chart_var, (calculated_number)(*value / (1024 * 1024)));
+                return 1;
+            }
+        }
+    }
+    return 0;
+}
+
 void update_cgroup_charts(int update_every) {
     debug(D_CGROUP, "updating cgroups charts");
 
@@ -2250,7 +2393,7 @@ void update_cgroup_charts(int update_every) {
                         , "cpu"
                         , "cgroup.cpu"
                         , title
-                        , "%"
+                        , "percentage"
                         , PLUGIN_CGROUPS_NAME
                         , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
                         , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS
@@ -2267,6 +2410,82 @@ void update_cgroup_charts(int update_every) {
             rrddim_set(cg->st_cpu, "user", cg->cpuacct_stat.user);
             rrddim_set(cg->st_cpu, "system", cg->cpuacct_stat.system);
             rrdset_done(cg->st_cpu);
+
+            if(likely(cg->filename_cpuset_cpus || cg->filename_cpu_cfs_period || cg->filename_cpu_cfs_quota)) {
+                update_cpu_limits(&cg->filename_cpuset_cpus, &cg->cpuset_cpus, cg);
+                update_cpu_limits(&cg->filename_cpu_cfs_period, &cg->cpu_cfs_period, cg);
+                update_cpu_limits(&cg->filename_cpu_cfs_quota, &cg->cpu_cfs_quota, cg);
+
+                if(unlikely(!cg->chart_var_cpu_limit)) {
+                    cg->chart_var_cpu_limit = rrdsetvar_custom_chart_variable_create(cg->st_cpu, "cpu_limit");
+                    if(!cg->chart_var_cpu_limit) {
+                        error("Cannot create cgroup %s chart variable 'cpu_limit'. Will not update its limit anymore.", cg->id);
+                        freez(cg->filename_cpuset_cpus);
+                        cg->filename_cpuset_cpus = NULL;
+                        freez(cg->filename_cpu_cfs_period);
+                        cg->filename_cpu_cfs_period = NULL;
+                        freez(cg->filename_cpu_cfs_quota);
+                        cg->filename_cpu_cfs_quota = NULL;
+                    }
+                }
+                else {
+                    calculated_number value = 0, quota = 0;
+
+                    if(likely(cg->filename_cpuset_cpus || (cg->filename_cpu_cfs_period && cg->filename_cpu_cfs_quota))) {
+                        if(unlikely(cg->cpu_cfs_quota > 0))
+                            quota = (calculated_number)cg->cpu_cfs_quota / (calculated_number)cg->cpu_cfs_period;
+
+                        if(unlikely(quota > 0 && quota < cg->cpuset_cpus))
+                            value = quota * 100;
+                        else
+                            value = (calculated_number)cg->cpuset_cpus * 100;
+                    }
+                    if(likely(value)) {
+                        rrdsetvar_custom_chart_variable_set(cg->chart_var_cpu_limit, value);
+
+                        if(unlikely(!cg->st_cpu_limit)) {
+                            snprintfz(title, CHART_TITLE_MAX, "CPU Usage within the limits for cgroup %s", cg->chart_title);
+
+                            cg->st_cpu_limit = rrdset_create_localhost(
+                                    cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+                                    , "cpu_limit"
+                                    , NULL
+                                    , "cpu"
+                                    , "cgroup.cpu_limit"
+                                    , title
+                                    , "percentage"
+                                    , PLUGIN_CGROUPS_NAME
+                                    , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                                    , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS - 1
+                                    , update_every
+                                    , RRDSET_TYPE_LINE
+                            );
+
+                            rrddim_add(cg->st_cpu_limit, "used", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+                        }
+                        else
+                            rrdset_next(cg->st_cpu_limit);
+
+                        calculated_number cpu_usage = (calculated_number)(cg->cpuacct_stat.user + cg->cpuacct_stat.system) * 100 / system_hz;
+                        calculated_number cpu_used = 100 * (cpu_usage - cg->prev_cpu_usage) / (value * update_every);
+
+                        rrdset_isnot_obsolete(cg->st_cpu_limit);
+
+                        rrddim_set(cg->st_cpu_limit, "used", (cpu_used > 0)?cpu_used:0);
+
+                        cg->prev_cpu_usage = cpu_usage;
+
+                        rrdset_done(cg->st_cpu_limit);
+                    }
+                    else {
+                        rrdsetvar_custom_chart_variable_set(cg->chart_var_cpu_limit, NAN);
+                        if(unlikely(cg->st_cpu_limit)) {
+                            rrdset_is_obsolete(cg->st_cpu_limit);
+                            cg->st_cpu_limit = NULL;
+                        }
+                    }
+                }
+            }
         }
 
         if(likely(cg->cpuacct_usage.updated && cg->cpuacct_usage.enabled == CONFIG_BOOLEAN_YES)) {
@@ -2283,7 +2502,7 @@ void update_cgroup_charts(int update_every) {
                         , "cpu"
                         , "cgroup.cpu_per_core"
                         , title
-                        , "%"
+                        , "percentage"
                         , PLUGIN_CGROUPS_NAME
                         , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
                         , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 100
@@ -2464,6 +2683,75 @@ void update_cgroup_charts(int update_every) {
             rrddim_set(cg->st_mem_usage, "ram", cg->memory.usage_in_bytes - ((cgroup_used_memory_without_cache)?cg->memory.cache:0));
             rrddim_set(cg->st_mem_usage, "swap", (cg->memory.msw_usage_in_bytes > cg->memory.usage_in_bytes)?cg->memory.msw_usage_in_bytes - cg->memory.usage_in_bytes:0);
             rrdset_done(cg->st_mem_usage);
+
+            if (likely(update_memory_limits(&cg->filename_memory_limit, &cg->chart_var_memory_limit, &cg->memory_limit, "memory_limit", cg))) {
+                static unsigned long long ram_total = 0;
+
+                if(unlikely(!ram_total)) {
+                    procfile *ff = NULL;
+
+                    char filename[FILENAME_MAX + 1];
+                    snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo");
+                    ff = procfile_open(config_get("plugin:cgroups", "meminfo filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+
+                    if(likely(ff))
+                        ff = procfile_readall(ff);
+                    if(likely(ff && procfile_lines(ff) && !strncmp(procfile_word(ff, 0), "MemTotal", 8)))
+                        ram_total = str2ull(procfile_word(ff, 1)) * 1024;
+                    else {
+                        error("Cannot read file %s. Will not update cgroup %s RAM limit anymore.", filename, cg->id);
+                        freez(cg->filename_memory_limit);
+                        cg->filename_memory_limit = NULL;
+                    }
+
+                    procfile_close(ff);
+                }
+
+                if(likely(ram_total)) {
+                    unsigned long long memory_limit = ram_total;
+
+                    if(unlikely(cg->memory_limit < ram_total))
+                        memory_limit = cg->memory_limit;
+
+                    if(unlikely(!cg->st_mem_usage_limit)) {
+                        snprintfz(title, CHART_TITLE_MAX, "Used RAM without Cache within the limits for cgroup %s", cg->chart_title);
+
+                        cg->st_mem_usage_limit = rrdset_create_localhost(
+                                cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX)
+                                , "mem_usage_limit"
+                                , NULL
+                                , "mem"
+                                , "cgroup.mem_usage_limit"
+                                , title
+                                , "MiB"
+                                , PLUGIN_CGROUPS_NAME
+                                , PLUGIN_CGROUPS_MODULE_CGROUPS_NAME
+                                , NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 199
+                                , update_every
+                                , RRDSET_TYPE_STACKED
+                        );
+
+                        rrddim_add(cg->st_mem_usage_limit, "available", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                        rrddim_add(cg->st_mem_usage_limit, "used", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                    }
+                    else
+                        rrdset_next(cg->st_mem_usage_limit);
+
+                    rrdset_isnot_obsolete(cg->st_mem_usage_limit);
+
+                    rrddim_set(cg->st_mem_usage_limit, "available", memory_limit - (cg->memory.usage_in_bytes - ((cgroup_used_memory_without_cache)?cg->memory.cache:0)));
+                    rrddim_set(cg->st_mem_usage_limit, "used", cg->memory.usage_in_bytes - ((cgroup_used_memory_without_cache)?cg->memory.cache:0));
+                    rrdset_done(cg->st_mem_usage_limit);
+                }
+            }
+            else {
+                if(unlikely(cg->st_mem_usage_limit)) {
+                    rrdset_is_obsolete(cg->st_mem_usage_limit);
+                    cg->st_mem_usage_limit = NULL;
+                }
+            }
+
+            update_memory_limits(&cg->filename_memoryswap_limit, &cg->chart_var_memoryswap_limit, &cg->memoryswap_limit, "memory_and_swap_limit", cg);
         }
 
         if(likely(cg->memory.updated_failcnt && cg->memory.enabled_failcnt == CONFIG_BOOLEAN_YES)) {