Executing Commands on Devices
ANTA CLI provides a set of entrypoints to facilitate remote command execution on EOS devices.
EXEC command overview¶
anta exec --help
Usage: anta exec [OPTIONS] COMMAND [ARGS]...
Execute commands to inventory devices
Options:
--help Show this message and exit.
Commands:
clear-counters Clear counter statistics on EOS devices
collect-tech-support Collect scheduled tech-support from EOS devices
snapshot Collect commands output from devices in inventory
Clear interfaces counters¶
This command clears interface counters on EOS devices specified in your inventory.
Command overview¶
Usage: anta exec clear-counters [OPTIONS]
Clear counter statistics on EOS devices.
Options:
-u, --username TEXT Username to connect to EOS [env var: ANTA_USERNAME;
required]
-p, --password TEXT Password to connect to EOS that must be provided. It
can be prompted using '--prompt' option. [env var:
ANTA_PASSWORD]
--enable-password TEXT Password to access EOS Privileged EXEC mode. It can
be prompted using '--prompt' option. Requires '--
enable' option. [env var: ANTA_ENABLE_PASSWORD]
--enable Some commands may require EOS Privileged EXEC mode.
This option tries to access this mode before sending
a command to the device. [env var: ANTA_ENABLE]
-P, --prompt Prompt for passwords if they are not provided. [env
var: ANTA_PROMPT]
--timeout FLOAT Global API timeout. This value will be used for all
devices. [env var: ANTA_TIMEOUT; default: 30.0]
--insecure Disable SSH Host Key validation. [env var:
ANTA_INSECURE]
--disable-cache Disable cache globally. [env var:
ANTA_DISABLE_CACHE]
-i, --inventory FILE Path to the inventory YAML file. [env var:
ANTA_INVENTORY; required]
--tags TEXT List of tags using comma as separator:
tag1,tag2,tag3. [env var: ANTA_TAGS]
--help Show this message and exit.
username,password,enable-password,enable,timeoutandinsecurevalues are the same for all devices
Example¶
anta exec clear-counters --tags SPINE
[20:19:13] INFO Connecting to devices... utils.py:43
INFO Clearing counters on remote devices... utils.py:46
INFO Cleared counters on DC1-SPINE2 (cEOSLab) utils.py:41
INFO Cleared counters on DC2-SPINE1 (cEOSLab) utils.py:41
INFO Cleared counters on DC1-SPINE1 (cEOSLab) utils.py:41
INFO Cleared counters on DC2-SPINE2 (cEOSLab)
Collect a set of commands¶
This command collects all the commands specified in a commands-list file, which can be in either json or text format.
Command overview¶
Usage: anta exec snapshot [OPTIONS]
Collect commands output from devices in inventory.
Options:
-u, --username TEXT Username to connect to EOS [env var:
ANTA_USERNAME; required]
-p, --password TEXT Password to connect to EOS that must be provided.
It can be prompted using '--prompt' option. [env
var: ANTA_PASSWORD]
--enable-password TEXT Password to access EOS Privileged EXEC mode. It
can be prompted using '--prompt' option. Requires
'--enable' option. [env var:
ANTA_ENABLE_PASSWORD]
--enable Some commands may require EOS Privileged EXEC
mode. This option tries to access this mode before
sending a command to the device. [env var:
ANTA_ENABLE]
-P, --prompt Prompt for passwords if they are not provided.
[env var: ANTA_PROMPT]
--timeout FLOAT Global API timeout. This value will be used for
all devices. [env var: ANTA_TIMEOUT; default:
30.0]
--insecure Disable SSH Host Key validation. [env var:
ANTA_INSECURE]
--disable-cache Disable cache globally. [env var:
ANTA_DISABLE_CACHE]
-i, --inventory FILE Path to the inventory YAML file. [env var:
ANTA_INVENTORY; required]
--tags TEXT List of tags using comma as separator:
tag1,tag2,tag3. [env var: ANTA_TAGS]
-c, --commands-list FILE File with list of commands to collect [env var:
ANTA_EXEC_SNAPSHOT_COMMANDS_LIST; required]
-o, --output DIRECTORY Directory to save commands output. [env var:
ANTA_EXEC_SNAPSHOT_OUTPUT; default:
anta_snapshot_2024-04-09_15_56_19]
--help Show this message and exit.
username,password,enable-password,enable,timeoutandinsecurevalues are the same for all devices
The commands-list file should follow this structure:
---
json_format:
- show version
text_format:
- show bfd peers
Example¶
anta exec snapshot --tags SPINE --commands-list ./commands.yaml --output ./
[20:25:15] INFO Connecting to devices... utils.py:78
INFO Collecting commands from remote devices utils.py:81
INFO Collected command 'show version' from device DC2-SPINE1 (cEOSLab) utils.py:76
INFO Collected command 'show version' from device DC2-SPINE2 (cEOSLab) utils.py:76
INFO Collected command 'show version' from device DC1-SPINE1 (cEOSLab) utils.py:76
INFO Collected command 'show version' from device DC1-SPINE2 (cEOSLab) utils.py:76
[20:25:16] INFO Collected command 'show bfd peers' from device DC2-SPINE2 (cEOSLab) utils.py:76
INFO Collected command 'show bfd peers' from device DC2-SPINE1 (cEOSLab) utils.py:76
INFO Collected command 'show bfd peers' from device DC1-SPINE1 (cEOSLab) utils.py:76
INFO Collected command 'show bfd peers' from device DC1-SPINE2 (cEOSLab)
The results of the executed commands will be stored in the output directory specified during command execution:
tree _2023-07-14_20_25_15
_2023-07-14_20_25_15
├── DC1-SPINE1
│ ├── json
│ │ └── show version.json
│ └── text
│ └── show bfd peers.log
├── DC1-SPINE2
│ ├── json
│ │ └── show version.json
│ └── text
│ └── show bfd peers.log
├── DC2-SPINE1
│ ├── json
│ │ └── show version.json
│ └── text
│ └── show bfd peers.log
└── DC2-SPINE2
├── json
│ └── show version.json
└── text
└── show bfd peers.log
12 directories, 8 files
Get Scheduled tech-support¶
EOS offers a feature that automatically creates a tech-support archive every hour by default. These archives are stored under /mnt/flash/schedule/tech-support.
leaf1#show schedule summary
Maximum concurrent jobs 1
Prepend host name to logfile: Yes
Name At Time Last Interval Timeout Max Max Logfile Location Status
Time (mins) (mins) Log Logs
Files Size
----------------- ------------- ----------- -------------- ------------- ----------- ---------- --------------------------------- ------
tech-support now 08:37 60 30 100 - flash:schedule/tech-support/ Success
leaf1#bash ls /mnt/flash/schedule/tech-support
leaf1_tech-support_2023-03-09.1337.log.gz leaf1_tech-support_2023-03-10.0837.log.gz leaf1_tech-support_2023-03-11.0337.log.gz
For Network Readiness for Use (NRFU) tests and to keep a comprehensive report of the system state before going live, ANTA provides a command-line interface that efficiently retrieves these files.
Command overview¶
Usage: anta exec collect-tech-support [OPTIONS]
Collect scheduled tech-support from EOS devices.
Options:
-u, --username TEXT Username to connect to EOS [env var: ANTA_USERNAME;
required]
-p, --password TEXT Password to connect to EOS that must be provided. It
can be prompted using '--prompt' option. [env var:
ANTA_PASSWORD]
--enable-password TEXT Password to access EOS Privileged EXEC mode. It can
be prompted using '--prompt' option. Requires '--
enable' option. [env var: ANTA_ENABLE_PASSWORD]
--enable Some commands may require EOS Privileged EXEC mode.
This option tries to access this mode before sending
a command to the device. [env var: ANTA_ENABLE]
-P, --prompt Prompt for passwords if they are not provided. [env
var: ANTA_PROMPT]
--timeout FLOAT Global API timeout. This value will be used for all
devices. [env var: ANTA_TIMEOUT; default: 30.0]
--insecure Disable SSH Host Key validation. [env var:
ANTA_INSECURE]
--disable-cache Disable cache globally. [env var:
ANTA_DISABLE_CACHE]
-i, --inventory FILE Path to the inventory YAML file. [env var:
ANTA_INVENTORY; required]
--tags TEXT List of tags using comma as separator:
tag1,tag2,tag3. [env var: ANTA_TAGS]
-o, --output PATH Path for test catalog [default: ./tech-support]
--latest INTEGER Number of scheduled show-tech to retrieve
--configure Ensure devices have 'aaa authorization exec default
local' configured (required for SCP on EOS). THIS
WILL CHANGE THE CONFIGURATION OF YOUR NETWORK.
--help Show this message and exit.
username,password,enable-password,enable,timeoutandinsecurevalues are the same for all devices
When executed, this command fetches tech-support files and downloads them locally into a device-specific subfolder within the designated folder. You can specify the output folder with the --output option.
ANTA uses SCP to download files from devices and will not trust unknown SSH hosts by default. Add the SSH public keys of your devices to your known_hosts file or use the anta --insecure option to ignore SSH host keys validation.
The configuration aaa authorization exec default must be present on devices to be able to use SCP.
ANTA can automatically configure aaa authorization exec default local using the anta exec collect-tech-support --configure option.
If you require specific AAA configuration for aaa authorization exec default, like aaa authorization exec default none or aaa authorization exec default group tacacs+, you will need to configure it manually.
The --latest option allows retrieval of a specific number of the most recent tech-support files.
Warning
By default all the tech-support files present on the devices are retrieved.
Example¶
anta --insecure exec collect-tech-support
[15:27:19] INFO Connecting to devices...
INFO Copying '/mnt/flash/schedule/tech-support/spine1_tech-support_2023-06-09.1315.log.gz' from device spine1 to 'tech-support/spine1' locally
INFO Copying '/mnt/flash/schedule/tech-support/leaf3_tech-support_2023-06-09.1315.log.gz' from device leaf3 to 'tech-support/leaf3' locally
INFO Copying '/mnt/flash/schedule/tech-support/leaf1_tech-support_2023-06-09.1315.log.gz' from device leaf1 to 'tech-support/leaf1' locally
INFO Copying '/mnt/flash/schedule/tech-support/leaf2_tech-support_2023-06-09.1315.log.gz' from device leaf2 to 'tech-support/leaf2' locally
INFO Copying '/mnt/flash/schedule/tech-support/spine2_tech-support_2023-06-09.1315.log.gz' from device spine2 to 'tech-support/spine2' locally
INFO Copying '/mnt/flash/schedule/tech-support/leaf4_tech-support_2023-06-09.1315.log.gz' from device leaf4 to 'tech-support/leaf4' locally
INFO Collected 1 scheduled tech-support from leaf2
INFO Collected 1 scheduled tech-support from spine2
INFO Collected 1 scheduled tech-support from leaf3
INFO Collected 1 scheduled tech-support from spine1
INFO Collected 1 scheduled tech-support from leaf1
INFO Collected 1 scheduled tech-support from leaf4
The output folder structure is as follows:
tree tech-support/
tech-support/
├── leaf1
│ └── leaf1_tech-support_2023-06-09.1315.log.gz
├── leaf2
│ └── leaf2_tech-support_2023-06-09.1315.log.gz
├── leaf3
│ └── leaf3_tech-support_2023-06-09.1315.log.gz
├── leaf4
│ └── leaf4_tech-support_2023-06-09.1315.log.gz
├── spine1
│ └── spine1_tech-support_2023-06-09.1315.log.gz
└── spine2
└── spine2_tech-support_2023-06-09.1315.log.gz
6 directories, 6 files
Each device has its own subdirectory containing the collected tech-support files.