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netdata state container: runaway FD use

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Évaluation

Difficulté
4/5
Temps estimé
3-5 jours
Accessibilité débutants
30/100
Type d'issue
Bug
Clarté
À clarifier
Activité
À l'abandon
Stack technique
helm, kubernetes
Domaine
infrastructure

Piste de recherche

Commencez par reproduire le déploiement du state-container de Netdata et examinez comment le chart Helm configure ses chemins WAL et de base de données. Utilisez la sortie de lsof dans l’issue pour vérifier si des handles vers netdata-meta.db et context-meta.db sont ouverts de manière répétée ; le travail est terminé lorsque le state-container n’épuise plus les descripteurs de fichiers disponibles.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

Netdata needed to be removed due to consuming ALL available file descriptors (mildly entertaining that this isn't a monitored metric in netdata, that I could find).

From lsof it appears that it is just opening the WAL/db in a loop:


netdata   1781992 1782297 RRDCONTEX              201   15r      CHR                1,3         0t0          6 /dev/null
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   16u     sock                0,8         0t0   62179404 protocol: UNIX-STREAM
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   17ur     REG              0,121     4587520   14044310 /var/cache/netdata/netdata-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   18u      REG              0,121     4906952   14044311 /var/cache/netdata/netdata-meta.db-wal
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   19ur     REG              0,121       32768   14044312 /var/cache/netdata/netdata-meta.db-shm
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   20ur     REG              0,121        4096   14044313 /var/cache/netdata/context-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   21u      REG              0,121       37112   14044314 /var/cache/netdata/context-meta.db-wal
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   22ur     REG              0,121       32768   14044315 /var/cache/netdata/context-meta.db-shm
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   23ur     REG              0,121     4587520   14044310 /var/cache/netdata/netdata-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   24u      REG              0,121     4906952   14044311 /var/cache/netdata/netdata-meta.db-wal
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   25u  a_inode               0,14           0      12713 [eventpoll]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   26r     FIFO               0,13         0t0   62177496 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   27w     FIFO               0,13         0t0   62177496 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   28u  a_inode               0,14           0      12713 [eventfd]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   29u  a_inode               0,14           0      12713 [eventpoll]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   30r     FIFO               0,13         0t0   62171736 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   31w     FIFO               0,13         0t0   62171736 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   32u  a_inode               0,14           0      12713 [eventfd]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   33r     FIFO               0,13         0t0   62176463 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   34u     sock                0,8         0t0   62161843 protocol: UDPv6
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   35w     FIFO               0,13         0t0   62166944 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   36u     sock                0,8         0t0   62161844 protocol: UDP
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   37u     sock                0,8         0t0   62161847 protocol: TCPv6
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   38u     sock                0,8         0t0   62161848 protocol: TCP
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   39u     sock                0,8         0t0   62178506 protocol: UNIX-STREAM
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   40u  a_inode               0,14           0      12713 [eventfd]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   41u  a_inode               0,14           0      12713 [eventpoll]
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   42r     FIFO               0,13         0t0   62178505 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   43w     FIFO               0,13         0t0   62178505 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   44r      CHR                1,3         0t0          6 /dev/null
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   45r     FIFO               0,13         0t0   62160878 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   46w     FIFO               0,13         0t0   62160878 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   47r      REG              0,273           0   62169795 /proc/1/task/209/stat
lsof: no pwd entry for UID 201
netdata   1781992 1782297 RRDCONTEX              201   48u     sock                0,8         0t0   62194554 protocol: TCP
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  cwd       DIR              0,121        4096   13901928 /etc/netdata
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  rtd       DIR              0,121        4096   14034715 /
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  txt       REG              0,121     6986240   13902420 /usr/sbin/netdata
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem-r     REG              0,121               14044315 /var/cache/netdata/context-meta.db-shm (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem-r     REG              0,121               14044312 /var/cache/netdata/netdata-meta.db-shm (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896738 /usr/lib/libzstd.so.1.5.5 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896436 /usr/lib/libgcc_s.so.1 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896627 /usr/lib/libstdc++.so.6.0.30 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896405 /usr/lib/libbson-1.0.so.0.0.0 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896522 /usr/lib/libmongoc-1.0.so.0.0.0 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896615 /usr/lib/libsnappy.so.1.1.10 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896595 /usr/lib/libprotobuf.so.32.0.12 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896491 /usr/lib/libjson-c.so.5.2.0 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896512 /usr/lib/liblz4.so.1.9.4 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13896695 /usr/lib/libuv.so.1.0.0 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               13895904 /lib/libuuid.so.1.3.0 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               11672957 /lib/libssl.so.3 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               11672956 /lib/libcrypto.so.3 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               11672959 /lib/libz.so.1.2.13 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201  mem       REG              0,121               11672951 /lib/ld-musl-x86_64.so.1 (stat: No such file or directory)
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    0w      CHR                1,3         0t0          6 /dev/null
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    1w     FIFO               0,13         0t0   62178474 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    2w     FIFO               0,13         0t0   62178474 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    3u     sock                0,8         0t0   62173481 protocol: UNIX
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    4w     FIFO               0,13         0t0   62178474 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    5w     FIFO               0,13         0t0   62178474 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    6w      REG              0,121           0   14044307 /var/log/netdata/health.log
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    7u     sock                0,8         0t0   62173487 protocol: TCP
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    8u     sock                0,8         0t0   62173488 protocol: TCPv6
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201    9u  a_inode               0,14           0      12713 [eventpoll]
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   10r     FIFO               0,13         0t0   62179402 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   11w     FIFO               0,13         0t0   62179402 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   12r     FIFO               0,13         0t0   62179403 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   13w     FIFO               0,13         0t0   62179403 pipe
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   14u  a_inode               0,14           0      12713 [eventfd]
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   15r      CHR                1,3         0t0          6 /dev/null
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   16u     sock                0,8         0t0   62179404 protocol: UNIX-STREAM
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   17ur     REG              0,121     4587520   14044310 /var/cache/netdata/netdata-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   18u      REG              0,121     4906952   14044311 /var/cache/netdata/netdata-meta.db-wal
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   19ur     REG              0,121       32768   14044312 /var/cache/netdata/netdata-meta.db-shm
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   20ur     REG              0,121        4096   14044313 /var/cache/netdata/context-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   21u      REG              0,121       37112   14044314 /var/cache/netdata/context-meta.db-wal
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   22ur     REG              0,121       32768   14044315 /var/cache/netdata/context-meta.db-shm
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   23ur     REG              0,121     4587520   14044310 /var/cache/netdata/netdata-meta.db
lsof: no pwd entry for UID 201
netdata   1781992 1782298 REPLAY[1]              201   24u      REG              0,121     4906952   14044311 /var/cache/netdata/netdata-meta.db-wal

approximately ^ 100's of thousands of times until the node eventually becomes unavailable due to an inability to open any more file descriptors.

Langage dominant
Go Template
Étoiles
177
Forks
82
Merge moyen
1 j 55 min
PR mergées (30 j)
4

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Par où commencer

  1. Lisez l'issue en entier, puis le guide de contribution du projet.
  2. Signalez en commentaire que vous la prenez — cela évite que deux personnes fassent le même travail.
  3. Forkez le dépôt et travaillez sur une branche.
  4. Ouvrez une pull request qui référence le numéro de l'issue.

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