Simuler des pannes disque
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Ce document explique comment utiliser Chaosd pour simuler des pannes disque. Cette fonctionnalité vous permet de simuler une charge de lecture/écriture sur disque (via dd) ou un remplissage de disque (via dd ou fallocate).
Créer des expériences en mode ligne de commande
Cette section décrit comment créer des expériences de panne disque en utilisant le mode ligne de commande.
Avant de créer une expérience, vous pouvez exécuter la commande suivante pour vérifier les types de pannes disque pris en charge par Chaosd :
chaosd attack disk -h
Le résultat est le suivant :
disk attack related command
Usage:
chaosd attack disk [command]
Available Commands:
add-payload add disk payload
fill fill disk
Flags:
-h, --help help for disk
Global Flags:
--log-level string the log level of chaosd, the value can be 'debug', 'info', 'warn' and 'error'
Use "chaosd attack disk [command] --help" for more information about a command.
Actuellement, Chaosd prend en charge la création d'expériences de charge de lecture disque, de charge d'écriture disque et de remplissage de disque.
Simuler une charge de lecture disque en mode ligne de commande
La simulation de charge de lecture disque est une opération ponctuelle, donc l'expérience ne nécessite pas de récupération.
Commandes pour simuler une charge de lecture disque
chaosd attack disk add-payload read -h
Le résultat est le suivant :
read payload
Usage:
chaosd attack disk add-payload read [flags]
Flags:
-h, --help help for read
-p, --path string 'path' specifies the location to read data.If path not provided, payload will read from disk mount on "/"
-n, --process-num uint8 'process-num' specifies the number of process work on reading , default 1, only 1-255 is valid value (default 1)
-s, --size string 'size' specifies how many units of data will read from the file path.'unit' specifies the unit of data, support c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000,M=1024*1024, , GB=1000*1000*1000, G=1024*1024*1024 BYTESexample : 1M | 512kB
Global Flags:
--log-level string the log level of chaosd, the value can be 'debug', 'info', 'warn' and 'error'
Description de configuration pour simuler une charge de lecture disque
| Configuration item | Abbreviation | Description | Value |
|---|---|---|---|
path | p | Specifies the file path to read the data. If this parameter is not specified, or the parameter value is set to an empty string, Chaosd reads from the virtual disk files mounted in the "/" directory. Depending on the permissions to read the files, you might be required to run this program using certain permissions. | type: string; default: "" |
process-num | n | Specifies the number of concurrently running dd programs to be used. | type: uint8; default: 1; range: 1 to 255 |
size | s | Specifies the volume of data to be read. It is the total size of data that dd reads. | type: string; default: ""; required; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. |
Exemple de simulation de charge de lecture disque
chaosd attack disk add-payload read -s 1000G -n 7 -p /dev/zero
Le résultat est le suivant :
andrew@LAPTOP-NUS30NQD:~/chaosd/bin$ ./chaosd attack disk add-payload read -s 1000G -n 7 -p /dev/zero
[2021/05/20 13:54:31.323 +08:00] [INFO] [disk.go:128] ["5242880+0 records in\n5242880+0 records out\n5242880 bytes (5.2 MB, 5.0 MiB) copied, 4.13252 s, 1.3 MB/s\n"]
[2021/05/20 13:54:46.977 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.6513 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.002 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.6762 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.004 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.6777 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.015 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.6899 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.018 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.6914 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.051 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.7254 s, 9.8 GB/s\n"]
[2021/05/20 13:54:47.074 +08:00] [INFO] [disk.go:147] ["146285+0 records in\n146285+0 records out\n153390940160 bytes (153 GB, 143 GiB) copied, 15.7487 s, 9.7 GB/s\n"]
Read file /dev/zero successfully, uid: 4bc9b74a-5fe2-4038-b4f2-09ae95b57694
Simuler une charge d'écriture disque en mode ligne de commande
Commande pour simuler une charge d'écriture disque
chaosd attack disk add-payload write -h
Le résultat est le suivant :
write payload
Usage:
chaosd attack disk add-payload write [flags]
Flags:
-h, --help help for write
-p, --path string 'path' specifies the location to fill data in.If path not provided, payload will write into a temp file, temp file will be deleted after writing
-n, --process-num uint8 'process-num' specifies the number of process work on writing , default 1, only 1-255 is valid value (default 1)
-s, --size string 'size' specifies how many units of data will write into the file path.'unit' specifies the unit of data, support c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000,M=1024*1024, , GB=1000*1000*1000, G=1024*1024*1024 BYTESexample : 1M | 512kB
Global Flags:
--log-level string the log level of chaosd, the value can be 'debug', 'info', 'warn' and 'error'
Description de configuration pour simuler une charge d'écriture disque
| Configuration item | Abbreviation | Description | Value |
|---|---|---|---|
path | p | Specifies the file path to write the data. If this parameter is not specified, or the parameter value is set to an empty string, a temporary file will be created in the program execution directory. Depending on the permissions to write the files, you might be required to run this program using certain permissions. | type: string; default: "" |
process-num | n | Specifies the number of concurrently running dd programs to be used. | type: uint8; default: 1; range: 1 to 255 |
size | s | Specifies the volume of data to be written. It is the total size of data that dd writes. | type: string; default: ""; required; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. |
Exemple de simulation de charge d'écriture disque
chaosd attack disk add-payload write -s 2G -n 8
Le résultat est le suivant :
[2021/05/20 14:28:14.452 +08:00] [INFO] [disk.go:128] ["0+0 records in\n0+0 records out\n0 bytes copied, 4.3e-05 s, 0.0 kB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.32841 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.3344 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.33312 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.33466 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.33189 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.33752 s, 115 MB/s\n"]
[2021/05/20 14:28:16.793 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.33295 s, 115 MB/s\n"]
[2021/05/20 14:28:16.794 +08:00] [INFO] [disk.go:147] ["256+0 records in\n256+0 records out\n268435456 bytes (268 MB, 256 MiB) copied, 2.3359 s, 115 MB/s\n"]
Write file /home/andrew/chaosd/bin/example255569279 successfully, uid: e66afd86-6f3e-43a0-b161-09447ed84856
Simuler un remplissage de disque en mode ligne de commande
Commande pour simuler un remplissage de disque
chaosd attack disk fill -h
Le résultat est le suivant :
fill disk
Usage:
chaosd attack disk fill [flags]
Flags:
-d, --destroy destroy file after filled in or allocated
-f, --fallocate fill disk by fallocate instead of dd (default true)
-h, --help help for fill
-p, --path string 'path' specifies the location to fill data in.If path not provided, a temp file will be generated and deleted immediately after data filled in or allocated
-c, --percent string 'percent' how many percent data of disk will fill in the file path
-s, --size string 'size' specifies how many units of data will fill in the file path.'unit' specifies the unit of data, support c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000,M=1024*1024, , GB=1000*1000*1000, G=1024*1024*1024 BYTESexample : 1M | 512kB
Global Flags:
--log-level string the log level of chaosd, the value can be 'debug', 'info', 'warn' and 'error'
Description de configuration pour simuler un remplissage de disque
| Configuration item | Abbreviation | Description | Value |
|---|---|---|---|
destroy | d | If this parameter is set to true, the fill file is immediately deleted after being filled. | type: bool; default: false |
fallocate | f | If this parameter is set to true, Linux is used to call fallocate to quickly apply for disk space and size must be greater than 0. If this parameter is set to false, Linux is used to call dd to fill disks at a relatively slow pace. | type: bool; default: true |
path | p | Specifies the file path to write the data. If this parameter is not specified, or the parameter value is set to an empty string, a temporary file will be created in the program execution directory. Depending on the permissions to write the files, you might be required to run this program using certain permissions. | type: string; default: "" |
percent | c | Specifies the percentage of disk size to be filled. | type: string; default: ""; positive integer of the uint type is acceptable; You must set one of size or percent (both items cannot be "" at the same time). |
size | s | Specifies the volume of data to be written. | type: string; default: ""; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. You must set one of size or percent (both items cannot be "" at the same time). |
Exemple de simulation de remplissage de disque
chaosd attack disk fill -c 50 -d
Le résultat est le suivant :
[2021/05/20 14:30:02.943 +08:00] [INFO] [disk.go:215]
Fill file /home/andrew/chaosd/bin/example623832242 successfully, uid: 097b4214-8d8e-46ad-8768-c3e0d8cbb326
Créer des expériences en mode service
Cette section décrit comment créer des expériences de panne disque en utilisant le mode service.
Simuler une charge de lecture disque en mode service
La simulation de charge de lecture disque est une opération ponctuelle, donc l'expérience ne nécessite pas de récupération.
Paramètres pour simuler une charge de lecture disque
| Parameter | Description | Value |
|---|---|---|
action | Actions of the experiment | Set to "read-payload" |
path | Specifies the file path to read the data. If this parameter is not specified, or the parameter value is set to an empty string, Chaosd reads from the virtual disk files mounted in the "/" directory. Depending on the permissions to read the files, you might be required to run this program using certain permissions. | type: string; default: """ |
payload-process-num | Specifies the number of concurrently running dd programs to be used. | type: uint8; default: 1; range: 1 to 255 |
size | Specifies the volume of data to be read. It is the total size of data that dd reads. | type: string; default: ""; required; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. |
Exemple de simulation de charge de lecture disque en mode service
curl -X POST 172.16.112.130:31767/api/attack/disk -H "Content-Type:application/json" -d '{"action":"read-payload","path":"/dev/zero", "payload-process-num":7,"size":"1000G"}'
Le résultat est le suivant :
{"status":200,"message":"attack successfully","uid":"a551206c-960d-4ac5-9056-518e512d4d0d"}
Simuler une charge d'écriture disque en mode service
Paramètres pour simuler une charge d'écriture disque
| Parameter | Description | Value |
|---|---|---|
action | Actions of the experiment | Set to "write-payload" |
path | Specifies the file path to write the data. If this parameter is not specified, or the parameter value is set to an empty string, a temporary file will be created in the program execution directory. Depending on the permissions to write the files, you might be required to run this program using certain permissions. | type: string; default: "" |
payload-process-num | Specifies the number of concurrently running dd programs to be used. | type: uint8; default: 1; range: 1 to 255 |
size | Specifies the volume of data to be written. It is the total size of data that dd writes. | type: string; default: ""; required; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. |
Exemple de simulation de charge d'écriture disque en mode service
curl -X POST 172.16.112.130:31767/api/attack/disk -H "Content-Type:application/json" -d '{"action":"write-payload","path":"/tmp/test", "payload-process-num":7,"size":"1000G"}'
Le résultat est le suivant :
{"status":200,"message":"attack successfully","uid":"a551206c-960d-4ac5-9056-518e512d4d0d"}
Simuler un remplissage de disque en mode service
Paramètres pour simuler un remplissage de disque
| Parameter | Description | Value |
|---|---|---|
action | Actions of the experiment | Set to "fill" |
destroy | If this parameter is set to true, the fill file is immediately deleted after being filled. | type: bool; default: false |
fill-by-fallocate | If this parameter is set to true, Chaosd uses Linux to call fallocate to apply for disk space quickly, and you must set size to a value greater than 0. If this parameter is set to false, Chaosd uses Linux to call dd to fill disks at a relatively slow pace. | type: bool; default: true |
path | Specifies the file path to write the data. If this parameter is not specified, or the parameter value is set to an empty string, a temporary file will be created in the program execution directory. Depending on the permissions to write the files, you might be required to run this program using certain permissions. | type: string; default: "" |
percent | Specifies the percentage of disk size to be filled. | type: string; default: ""; positive integer of the uint type is acceptable; You must set one of size or percent (both items cannot be "" at the same time). |
size | Specifies the volume of data to be read. | type: string; default: ""; legal form: the combination of an integer and a unit. For example, 1M, 512kB. Supported units are c=1, w=2, b=512, kB=1000, K=1024, MB=1000*1000, M=1024*1024, GB=1000*1000*1000, G=1024*1024*1024*1024 BYTE and so on. You must set one of size or percent (both items cannot be "" at the same time). |
Exemple de simulation de remplissage de disque en mode service
curl -X POST 172.16.112.130:31767/api/attack/disk -H "Content-Type:application/json" -d '{"action":"fill","path":"/tmp/test", "fill-by-fallocate":true,"percent":"50"}'
Le résultat est le suivant :
{"status":200,"message":"attack successfully","uid":"a551206c-960d-4ac5-9056-518e512d4d0d"}