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SSH test by IP, to reflect actual usage and catch issues

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One issue is modified ssh_known_hosts wildcard customization
failing to cover IP address.
This commit is contained in:
Jarrod Johnson 2024-03-14 11:20:36 -04:00
parent 876b59c1f0
commit 1d4505ff3c
1 changed files with 19 additions and 14 deletions
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33
confluent_server/bin/confluent_selfcheck
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@ -280,13 +280,17 @@ if __name__ == '__main__':
cfg = configmanager.ConfigManager(None)
bootablev4nics = []
bootablev6nics = []
targsships = []
for nic in glob.glob("/sys/class/net/*/ifindex"):
idx = int(open(nic, "r").read())
nicname = nic.split('/')[-2]
ncfg = netutil.get_nic_config(cfg, args.node, ifidx=idx)
if ncfg['ipv4_address']:
targsships.append(ncfg['ipv4_address'])
if ncfg['ipv4_address'] or ncfg['ipv4_method'] == 'dhcp':
bootablev4nics.append(nicname)
if ncfg['ipv6_address']:
targsships.append(ncfg['ipv6_address'])
bootablev6nics.append(nicname)
if bootablev4nics:
print("{} appears to have network configuration suitable for IPv4 deployment via: {}".format(args.node, ",".join(bootablev4nics)))
@ -329,21 +333,22 @@ if __name__ == '__main__':
os.setgid(cuser.pw_gid)
os.setuid(cuser.pw_uid)
sshutil.prep_ssh_key('/etc/confluent/ssh/automation')
srun = subprocess.run(
['ssh', '-Tn', '-o', 'BatchMode=yes', '-l', 'root',
'-o', 'StrictHostKeyChecking=yes', args.node, 'true'],
stdin=subprocess.DEVNULL, stderr=subprocess.PIPE)
os.kill(int(sshutil.agent_pid), signal.SIGTERM)
if srun.returncode == 0:
print(f'Confluent automation access to {args.node} seems OK')
else:
if b'Host key verification failed' in srun.stderr:
emprint('Confluent ssh unable to verify host key, check /etc/ssh/ssh_known_hosts. (Example resolution: osdeploy initialize -k)')
elif b'ermission denied' in srun.stderr:
emprint('Confluent user unable to ssh in, check /root/.ssh/authorized_keys on the target system versus /etc/confluent/ssh/automation.pub (Example resolution: osdeploy initialize -a)')
for targ in targsships:
srun = subprocess.run(
['ssh', '-Tn', '-o', 'BatchMode=yes', '-l', 'root',
'-o', 'StrictHostKeyChecking=yes', targ, 'true'],
stdin=subprocess.DEVNULL, stderr=subprocess.PIPE)
if srun.returncode == 0:
print(f'Confluent automation access to {targ} seems OK')
else:
emprint('Unknown error attempting confluent automation ssh:')
sys.stderr.buffer.write(srun.stderr)
if b'Host key verification failed' in srun.stderr:
emprint(f'Confluent ssh unable to verify host key for {targ}, check /etc/ssh/ssh_known_hosts. (Example resolution: osdeploy initialize -k)')
elif b'ermission denied' in srun.stderr:
emprint(f'Confluent user unable to ssh in to {targ}, check /root/.ssh/authorized_keys on the target system versus /etc/confluent/ssh/automation.pub (Example resolution: osdeploy initialize -a)')
else:
emprint('Unknown error attempting confluent automation ssh:')
sys.stderr.buffer.write(srun.stderr)
os.kill(int(sshutil.agent_pid), signal.SIGTERM)
else:
print("Skipping node checks, no node specified (Example: confluent_selfcheck -n n1)")
# possible checks: