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Fix accidently empty lines in meminfo_linux #1671

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merged 2 commits into from
Apr 17, 2020

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alpaca2333
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In CentOS Linux release 6.2 (Final), kernel 3.10.90, node exporter would come across the following error:

panic: runtime error: index out of range [1] with length 1

goroutine 1548 [running]:
github.com/prometheus/node_exporter/collector.parseMemInfo(0xbbd920, 0xc0000f4fc8, 0x0, 0xc000000000, 0xc0000f4fc8)
        /Users/alpaca/Projects/prom-agent/vendor/github.com/prometheus/node_exporter/collector/meminfo_linux.go:50 +0x4d6

it is caused by empty lines read from /proc/meminfo. No idea why but there is a quick fix.

2020/04/10 09:52:49 !!!! DirectMap4k:      585388 kB
2020/04/10 09:52:49 !!!! DirectMap2M:    80119808 kB
2020/04/10 09:52:49 !!!! DirectMap1G:    53477376 kB
2020/04/10 09:52:49 !!!! 
panic: runtime error: index out of range [1] with length 1

Signed-off-by: qwertysun <qwertysun@tencent.com>

asd
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It would be great to find out which kernel bug(?) this causes and mention it in a comment.
Even if you can't find out what, some comment to explain that this is a workaround would be good.

Signed-off-by: qwertysun <qwertysun@tencent.com>

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Yuck, but LGTM.

@SuperQ SuperQ merged commit fa4edd7 into prometheus:master Apr 17, 2020
SuperQ added a commit that referenced this pull request May 25, 2020
* The netdev collector CLI argument `--collector.netdev.ignored-devices` was renamed to `--collector.netdev.device-blacklist` in order to conform with the systemd collector. #1279
* The label named `state` on `node_systemd_service_restart_total` metrics was changed to `name` to better describe the metric. #1393
* Refactoring of the mdadm collector changes several metrics
    - `node_md_disks_active` is removed
    - `node_md_disks` now has a `state` label for "fail", "spare", "active" disks.
    - `node_md_is_active` is replaced by `node_md_state` with a state set of "active", "inactive", "recovering", "resync".
* Additional label `mountaddr` added to NFS device metrics to distinguish mounts from the same URL, but different IP addresses. #1417
* Metrics node_cpu_scaling_frequency_min_hrts and node_cpu_scaling_frequency_max_hrts of the cpufreq collector were renamed to node_cpu_scaling_frequency_min_hertz and node_cpu_scaling_frequency_max_hertz. #1510
* Collectors that are enabled, but are unable to find data to collect, now return 0 for `node_scrape_collector_success`.

* [CHANGE] Add `--collector.netdev.device-whitelist`. #1279
* [CHANGE] Ignore iso9600 filesystem on Linux #1355
* [CHANGE] Refactor mdadm collector #1403
* [CHANGE] Add `mountaddr` label to NFS metrics. #1417
* [CHANGE] Don't count empty collectors as success. #1613
* [FEATURE] New flag to disable default collectors #1276
* [FEATURE] Add experimental TLS support #1277, #1687, #1695
* [FEATURE] Add collector for Power Supply Class #1280
* [FEATURE] Add new schedstat collector #1389
* [FEATURE] Add FreeBSD zfs support #1394
* [FEATURE] Add uname support for Darwin and OpenBSD #1433
* [FEATURE] Add new metric node_cpu_info #1489
* [FEATURE] Add new thermal_zone collector #1425
* [FEATURE] Add new cooling_device metrics to thermal zone collector #1445
* [FEATURE] Add swap usage on darwin #1508
* [FEATURE] Add Btrfs collector #1512
* [FEATURE] Add RAPL collector #1523
* [FEATURE] Add new softnet collector #1576
* [FEATURE] Add new udp_queues collector #1503
* [FEATURE] Add basic authentication #1673
* [ENHANCEMENT] Log pid when there is a problem reading the process stats #1341
* [ENHANCEMENT] Collect InfiniBand port state and physical state #1357
* [ENHANCEMENT] Include additional XFS runtime statistics. #1423
* [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. #1439
* [ENHANCEMENT] Expose IPVS firewall mark as a label #1455
* [ENHANCEMENT] Add check for systemd version before attempting to query certain metrics. #1413
* [ENHANCEMENT] Add a flag to adjust mount timeout #1486
* [ENHANCEMENT] Add new counters for flush requests in Linux 5.5 #1548
* [ENHANCEMENT] Add metrics and tests for UDP receive and send buffer errors #1534
* [ENHANCEMENT] The sockstat collector now exposes IPv6 statistics in addition to the existing IPv4 support. #1552
* [ENHANCEMENT] Add infiniband info metric #1563
* [ENHANCEMENT] Add unix socket support for supervisord collector #1592
* [ENHANCEMENT] Implement loadavg on all BSDs without cgo #1584
* [ENHANCEMENT] Add model_name and stepping to node_cpu_info metric #1617
* [ENHANCEMENT] Add `--collector.perf.cpus` to allow setting the CPU list for perf stats. #1561
* [ENHANCEMENT] Add metrics for IO errors and retires on Darwin. #1636
* [ENHANCEMENT] Add perf tracepoint collection flag #1664
* [ENHANCEMENT] ZFS: read contents of objset file #1632
* [ENHANCEMENT] Linux CPU: Cache CPU metrics to make them monotonically increasing #1711
* [BUGFIX] Read /proc/net files with a single read syscall #1380
* [BUGFIX] Renamed label `state` to `name` on `node_systemd_service_restart_total`. #1393
* [BUGFIX] Fix netdev nil reference on Darwin #1414
* [BUGFIX] Strip path.rootfs from mountpoint labels #1421
* [BUGFIX] Fix seconds reported by schedstat #1426
* [BUGFIX] Fix empty string in path.rootfs #1464
* [BUGFIX] Fix typo in cpufreq metric names #1510
* [BUGFIX] Read /proc/stat in one syscall #1538
* [BUGFIX] Fix OpenBSD cache memory information #1542
* [BUGFIX] Refactor textfile collector to avoid looping defer #1549
* [BUGFIX] Fix network speed math #1580
* [BUGFIX] collector/systemd: use regexp to extract systemd version #1647
* [BUGFIX] Fix initialization in perf collector when using multiple CPUs #1665
* [BUGFIX] Fix accidentally empty lines in meminfo_linux #1671

Signed-off-by: Ben Kochie <superq@gmail.com>
@SuperQ SuperQ mentioned this pull request May 25, 2020
oblitorum pushed a commit to shatteredsilicon/node_exporter that referenced this pull request Apr 9, 2024
* Fix accidently empty lines in meminfo_linux

Signed-off-by: qwertysun <qwertysun@tencent.com>
oblitorum pushed a commit to shatteredsilicon/node_exporter that referenced this pull request Apr 9, 2024
* The netdev collector CLI argument `--collector.netdev.ignored-devices` was renamed to `--collector.netdev.device-blacklist` in order to conform with the systemd collector. prometheus#1279
* The label named `state` on `node_systemd_service_restart_total` metrics was changed to `name` to better describe the metric. prometheus#1393
* Refactoring of the mdadm collector changes several metrics
    - `node_md_disks_active` is removed
    - `node_md_disks` now has a `state` label for "fail", "spare", "active" disks.
    - `node_md_is_active` is replaced by `node_md_state` with a state set of "active", "inactive", "recovering", "resync".
* Additional label `mountaddr` added to NFS device metrics to distinguish mounts from the same URL, but different IP addresses. prometheus#1417
* Metrics node_cpu_scaling_frequency_min_hrts and node_cpu_scaling_frequency_max_hrts of the cpufreq collector were renamed to node_cpu_scaling_frequency_min_hertz and node_cpu_scaling_frequency_max_hertz. prometheus#1510
* Collectors that are enabled, but are unable to find data to collect, now return 0 for `node_scrape_collector_success`.

* [CHANGE] Add `--collector.netdev.device-whitelist`. prometheus#1279
* [CHANGE] Ignore iso9600 filesystem on Linux prometheus#1355
* [CHANGE] Refactor mdadm collector prometheus#1403
* [CHANGE] Add `mountaddr` label to NFS metrics. prometheus#1417
* [CHANGE] Don't count empty collectors as success. prometheus#1613
* [FEATURE] New flag to disable default collectors prometheus#1276
* [FEATURE] Add experimental TLS support prometheus#1277, prometheus#1687, prometheus#1695
* [FEATURE] Add collector for Power Supply Class prometheus#1280
* [FEATURE] Add new schedstat collector prometheus#1389
* [FEATURE] Add FreeBSD zfs support prometheus#1394
* [FEATURE] Add uname support for Darwin and OpenBSD prometheus#1433
* [FEATURE] Add new metric node_cpu_info prometheus#1489
* [FEATURE] Add new thermal_zone collector prometheus#1425
* [FEATURE] Add new cooling_device metrics to thermal zone collector prometheus#1445
* [FEATURE] Add swap usage on darwin prometheus#1508
* [FEATURE] Add Btrfs collector prometheus#1512
* [FEATURE] Add RAPL collector prometheus#1523
* [FEATURE] Add new softnet collector prometheus#1576
* [FEATURE] Add new udp_queues collector prometheus#1503
* [FEATURE] Add basic authentication prometheus#1673
* [ENHANCEMENT] Log pid when there is a problem reading the process stats prometheus#1341
* [ENHANCEMENT] Collect InfiniBand port state and physical state prometheus#1357
* [ENHANCEMENT] Include additional XFS runtime statistics. prometheus#1423
* [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. prometheus#1439
* [ENHANCEMENT] Expose IPVS firewall mark as a label prometheus#1455
* [ENHANCEMENT] Add check for systemd version before attempting to query certain metrics. prometheus#1413
* [ENHANCEMENT] Add a flag to adjust mount timeout prometheus#1486
* [ENHANCEMENT] Add new counters for flush requests in Linux 5.5 prometheus#1548
* [ENHANCEMENT] Add metrics and tests for UDP receive and send buffer errors prometheus#1534
* [ENHANCEMENT] The sockstat collector now exposes IPv6 statistics in addition to the existing IPv4 support. prometheus#1552
* [ENHANCEMENT] Add infiniband info metric prometheus#1563
* [ENHANCEMENT] Add unix socket support for supervisord collector prometheus#1592
* [ENHANCEMENT] Implement loadavg on all BSDs without cgo prometheus#1584
* [ENHANCEMENT] Add model_name and stepping to node_cpu_info metric prometheus#1617
* [ENHANCEMENT] Add `--collector.perf.cpus` to allow setting the CPU list for perf stats. prometheus#1561
* [ENHANCEMENT] Add metrics for IO errors and retires on Darwin. prometheus#1636
* [ENHANCEMENT] Add perf tracepoint collection flag prometheus#1664
* [ENHANCEMENT] ZFS: read contents of objset file prometheus#1632
* [ENHANCEMENT] Linux CPU: Cache CPU metrics to make them monotonically increasing prometheus#1711
* [BUGFIX] Read /proc/net files with a single read syscall prometheus#1380
* [BUGFIX] Renamed label `state` to `name` on `node_systemd_service_restart_total`. prometheus#1393
* [BUGFIX] Fix netdev nil reference on Darwin prometheus#1414
* [BUGFIX] Strip path.rootfs from mountpoint labels prometheus#1421
* [BUGFIX] Fix seconds reported by schedstat prometheus#1426
* [BUGFIX] Fix empty string in path.rootfs prometheus#1464
* [BUGFIX] Fix typo in cpufreq metric names prometheus#1510
* [BUGFIX] Read /proc/stat in one syscall prometheus#1538
* [BUGFIX] Fix OpenBSD cache memory information prometheus#1542
* [BUGFIX] Refactor textfile collector to avoid looping defer prometheus#1549
* [BUGFIX] Fix network speed math prometheus#1580
* [BUGFIX] collector/systemd: use regexp to extract systemd version prometheus#1647
* [BUGFIX] Fix initialization in perf collector when using multiple CPUs prometheus#1665
* [BUGFIX] Fix accidentally empty lines in meminfo_linux prometheus#1671

Signed-off-by: Ben Kochie <superq@gmail.com>
oblitorum pushed a commit to shatteredsilicon/node_exporter that referenced this pull request Apr 9, 2024
* Fix accidently empty lines in meminfo_linux

Signed-off-by: qwertysun <qwertysun@tencent.com>
oblitorum pushed a commit to shatteredsilicon/node_exporter that referenced this pull request Apr 9, 2024
* The netdev collector CLI argument `--collector.netdev.ignored-devices` was renamed to `--collector.netdev.device-blacklist` in order to conform with the systemd collector. prometheus#1279
* The label named `state` on `node_systemd_service_restart_total` metrics was changed to `name` to better describe the metric. prometheus#1393
* Refactoring of the mdadm collector changes several metrics
    - `node_md_disks_active` is removed
    - `node_md_disks` now has a `state` label for "fail", "spare", "active" disks.
    - `node_md_is_active` is replaced by `node_md_state` with a state set of "active", "inactive", "recovering", "resync".
* Additional label `mountaddr` added to NFS device metrics to distinguish mounts from the same URL, but different IP addresses. prometheus#1417
* Metrics node_cpu_scaling_frequency_min_hrts and node_cpu_scaling_frequency_max_hrts of the cpufreq collector were renamed to node_cpu_scaling_frequency_min_hertz and node_cpu_scaling_frequency_max_hertz. prometheus#1510
* Collectors that are enabled, but are unable to find data to collect, now return 0 for `node_scrape_collector_success`.

* [CHANGE] Add `--collector.netdev.device-whitelist`. prometheus#1279
* [CHANGE] Ignore iso9600 filesystem on Linux prometheus#1355
* [CHANGE] Refactor mdadm collector prometheus#1403
* [CHANGE] Add `mountaddr` label to NFS metrics. prometheus#1417
* [CHANGE] Don't count empty collectors as success. prometheus#1613
* [FEATURE] New flag to disable default collectors prometheus#1276
* [FEATURE] Add experimental TLS support prometheus#1277, prometheus#1687, prometheus#1695
* [FEATURE] Add collector for Power Supply Class prometheus#1280
* [FEATURE] Add new schedstat collector prometheus#1389
* [FEATURE] Add FreeBSD zfs support prometheus#1394
* [FEATURE] Add uname support for Darwin and OpenBSD prometheus#1433
* [FEATURE] Add new metric node_cpu_info prometheus#1489
* [FEATURE] Add new thermal_zone collector prometheus#1425
* [FEATURE] Add new cooling_device metrics to thermal zone collector prometheus#1445
* [FEATURE] Add swap usage on darwin prometheus#1508
* [FEATURE] Add Btrfs collector prometheus#1512
* [FEATURE] Add RAPL collector prometheus#1523
* [FEATURE] Add new softnet collector prometheus#1576
* [FEATURE] Add new udp_queues collector prometheus#1503
* [FEATURE] Add basic authentication prometheus#1673
* [ENHANCEMENT] Log pid when there is a problem reading the process stats prometheus#1341
* [ENHANCEMENT] Collect InfiniBand port state and physical state prometheus#1357
* [ENHANCEMENT] Include additional XFS runtime statistics. prometheus#1423
* [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. prometheus#1439
* [ENHANCEMENT] Expose IPVS firewall mark as a label prometheus#1455
* [ENHANCEMENT] Add check for systemd version before attempting to query certain metrics. prometheus#1413
* [ENHANCEMENT] Add a flag to adjust mount timeout prometheus#1486
* [ENHANCEMENT] Add new counters for flush requests in Linux 5.5 prometheus#1548
* [ENHANCEMENT] Add metrics and tests for UDP receive and send buffer errors prometheus#1534
* [ENHANCEMENT] The sockstat collector now exposes IPv6 statistics in addition to the existing IPv4 support. prometheus#1552
* [ENHANCEMENT] Add infiniband info metric prometheus#1563
* [ENHANCEMENT] Add unix socket support for supervisord collector prometheus#1592
* [ENHANCEMENT] Implement loadavg on all BSDs without cgo prometheus#1584
* [ENHANCEMENT] Add model_name and stepping to node_cpu_info metric prometheus#1617
* [ENHANCEMENT] Add `--collector.perf.cpus` to allow setting the CPU list for perf stats. prometheus#1561
* [ENHANCEMENT] Add metrics for IO errors and retires on Darwin. prometheus#1636
* [ENHANCEMENT] Add perf tracepoint collection flag prometheus#1664
* [ENHANCEMENT] ZFS: read contents of objset file prometheus#1632
* [ENHANCEMENT] Linux CPU: Cache CPU metrics to make them monotonically increasing prometheus#1711
* [BUGFIX] Read /proc/net files with a single read syscall prometheus#1380
* [BUGFIX] Renamed label `state` to `name` on `node_systemd_service_restart_total`. prometheus#1393
* [BUGFIX] Fix netdev nil reference on Darwin prometheus#1414
* [BUGFIX] Strip path.rootfs from mountpoint labels prometheus#1421
* [BUGFIX] Fix seconds reported by schedstat prometheus#1426
* [BUGFIX] Fix empty string in path.rootfs prometheus#1464
* [BUGFIX] Fix typo in cpufreq metric names prometheus#1510
* [BUGFIX] Read /proc/stat in one syscall prometheus#1538
* [BUGFIX] Fix OpenBSD cache memory information prometheus#1542
* [BUGFIX] Refactor textfile collector to avoid looping defer prometheus#1549
* [BUGFIX] Fix network speed math prometheus#1580
* [BUGFIX] collector/systemd: use regexp to extract systemd version prometheus#1647
* [BUGFIX] Fix initialization in perf collector when using multiple CPUs prometheus#1665
* [BUGFIX] Fix accidentally empty lines in meminfo_linux prometheus#1671

Signed-off-by: Ben Kochie <superq@gmail.com>
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3 participants