Dnos Techsupport

If the user provided a device name instead of an IP, resolve it first via get_device_management_interfaces MCP tool and pick the 100.64.x.x IP.

Step 2 — Request the Tech-Support

request system tech-support <name>

Handle prompts and errors

Replace existing prompt: If a previous tech-support file exists, the device asks whether to replace it. Detect yes/no or replace in the output and send yes\n.

Already running: If another tech-support generation is already in progress, the device returns Cannot produce a new techsupport file, another process is already running. In this case, skip directly to Step 3 (polling) — the running generation will complete and you can pick up its tar file.

shell.send(f"request system tech-support {ts_name}\n")
output = ""
yes_sent = False
for _ in range(20):
    time.sleep(3)
    while shell.recv_ready():
        output += shell.recv(65535).decode("utf-8", errors="replace")
    if not yes_sent and re.search(r'(yes/no|replace)', output, re.I):
        shell.send("yes\n")
        yes_sent = True
    if re.search(r'#\s*$', output.split('\n')[-1]):
        break

After the command returns, generation runs in the background.

Step 3 — Poll Until Complete

Run show system tech-support status in a loop until the output indicates completion (look for completed or Available or a line showing 8/8 archives collected, or the prompt returning without "running for" text).

for attempt in range(60):
    time.sleep(15)
    shell.send("show system tech-support status\n")
    time.sleep(5)
    out = ""
    while shell.recv_ready():
        out += shell.recv(65535).decode("utf-8", errors="replace")
    out = re.sub(r'\x1b\[[0-9;]*[a-zA-Z]', '', out)
    if 'completed' in out.lower() or 'available' in out.lower():
        break
    if '8/8' in out:
        break

Extract the tar filename from the status output. It appears on a line like:

File name ts_name_05_04_06_14-04-2026.tar

Parse it:

m = re.search(r'File name\s+(ts_\S+\.tar)', out)
tar_filename = m.group(1) if m else None

If after ~15 minutes it is still not done, inform the user and keep polling.

Step 4 — Enter Linux Shell and SCP the File

From the DNOS CLI, enter the underlying Linux shell:

run start shell

The device will prompt for a password. Send dnroot.

shell.send("run start shell\n")
time.sleep(3)
out = ""
while shell.recv_ready():
    out += shell.recv(65535).decode("utf-8", errors="replace")
if "Password" in out or "password" in out:
    shell.send("dnroot\n")
    time.sleep(3)
    while shell.recv_ready():
        shell.recv(65535)

Now send the SCP command to upload the file to the MinIO staging area:

scp_cmd = (
    'ip netns exec oob_ncc_ns bash -c '
    '"sshpass -p drive1234! scp -o StrictHostKeyChecking=no '
    '-o UserKnownHostsFile=/dev/null '
    '/techsupport/ts_* '
    '[email protected]:/ftpdisk/dn/auto_upload_to_minio/" &'
)
shell.send(scp_cmd + "\n")
time.sleep(10)
shell.send("\n")
time.sleep(5)
out = ""
while shell.recv_ready():
    out += shell.recv(65535).decode("utf-8", errors="replace")

Wait a few seconds, then press Enter to confirm the background job finishes. Look for the shell prompt returning cleanly (e.g. root@ or $).

After the SCP finishes, exit back to the DNOS CLI:

shell.send("exit\n")
time.sleep(2)

Step 5 — Return the MinIO Link

The file lands in the MinIO techsupport bucket. The download link is: