mirror of
https://github.com/prometheus/node_exporter.git
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4abc6fba7d
* Add fallback for missing /proc/1/mounts On some systems, `/proc/1/mounts` is hidden from non-root users due to the `hidepid` procfs feature. Attempt to fallback to `/proc/mounts` if `/proc/1/mounts` is not found. Signed-off-by: Ben Kochie <superq@gmail.com> * Add tests. Signed-off-by: Ben Kochie <superq@gmail.com> * Add CHANGELOG entry. Signed-off-by: Ben Kochie <superq@gmail.com>
115 lines
3.4 KiB
Go
115 lines
3.4 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nofilesystem
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package collector
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import (
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"strings"
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"testing"
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kingpin "gopkg.in/alecthomas/kingpin.v2"
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)
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func Test_parseFilesystemLabelsError(t *testing.T) {
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tests := []struct {
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name string
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in string
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}{
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{
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name: "too few fields",
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in: "hello world",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if _, err := parseFilesystemLabels(strings.NewReader(tt.in)); err == nil {
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t.Fatal("expected an error, but none occurred")
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}
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})
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}
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}
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func TestMountPointDetails(t *testing.T) {
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if _, err := kingpin.CommandLine.Parse([]string{"--path.procfs", "./fixtures/proc"}); err != nil {
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t.Fatal(err)
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}
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expected := map[string]string{
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"/": "",
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"/sys": "",
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"/proc": "",
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"/dev": "",
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"/dev/pts": "",
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"/run": "",
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"/sys/kernel/security": "",
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"/dev/shm": "",
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"/run/lock": "",
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"/sys/fs/cgroup": "",
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"/sys/fs/cgroup/systemd": "",
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"/sys/fs/pstore": "",
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"/sys/fs/cgroup/cpuset": "",
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"/sys/fs/cgroup/cpu,cpuacct": "",
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"/sys/fs/cgroup/devices": "",
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"/sys/fs/cgroup/freezer": "",
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"/sys/fs/cgroup/net_cls,net_prio": "",
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"/sys/fs/cgroup/blkio": "",
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"/sys/fs/cgroup/perf_event": "",
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"/proc/sys/fs/binfmt_misc": "",
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"/dev/mqueue": "",
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"/sys/kernel/debug": "",
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"/dev/hugepages": "",
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"/sys/fs/fuse/connections": "",
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"/boot": "",
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"/run/rpc_pipefs": "",
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"/run/user/1000": "",
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"/run/user/1000/gvfs": "",
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"/var/lib/kubelet/plugins/kubernetes.io/vsphere-volume/mounts/[vsanDatastore] bafb9e5a-8856-7e6c-699c-801844e77a4a/kubernetes-dynamic-pvc-3eba5bba-48a3-11e8-89ab-005056b92113.vmdk": "",
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"/var/lib/kubelet/plugins/kubernetes.io/vsphere-volume/mounts/[vsanDatastore] bafb9e5a-8856-7e6c-699c-801844e77a4a/kubernetes-dynamic-pvc-3eba5bba-48a3-11e8-89ab-005056b92113.vmdk": "",
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}
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filesystems, err := mountPointDetails()
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if err != nil {
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t.Log(err)
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}
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for _, fs := range filesystems {
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if _, ok := expected[fs.mountPoint]; !ok {
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t.Errorf("Got unexpected %s", fs.mountPoint)
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}
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}
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}
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func TestMountsFallback(t *testing.T) {
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if _, err := kingpin.CommandLine.Parse([]string{"--path.procfs", "./fixtures_hidepid/proc"}); err != nil {
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t.Fatal(err)
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}
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expected := map[string]string{
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"/": "",
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}
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filesystems, err := mountPointDetails()
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if err != nil {
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t.Log(err)
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}
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for _, fs := range filesystems {
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if _, ok := expected[fs.mountPoint]; !ok {
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t.Errorf("Got unexpected %s", fs.mountPoint)
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}
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}
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}
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