When I run simple_switch_14.py application in mininet environment, the ping of hosts works just fine.
Then I change the following strings of code:
1) "from ryu.ofproto import ofproto_v1_4" to "from ryu.ofproto import ofproto_v1_5"
2) "OFP_VERSIONS = [ofproto_v1_4.OFP_VERSION]" to "OFP_VERSIONS = [ofproto_v1_5.OFP_VERSION]"
3) "out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id, in_port=in_port, actions=actions, data=data)" to "out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id, match=parser.OFPMatch(in_port=in_port), actions=actions, data=data)"
it means that I am trying to run this application in openflow 1.5 version environment.
I get following error:
EVENT ofp_event->SimpleSwitch14 EventOFPPacketIn
packet in 1 00:00:00:00:00:01 ff:ff:ff:ff:ff:ff 1
EventOFPErrorMsg received.
version=0x6, msg_type=0x1, msg_len=0x44, xid=0x703a0cc
-- msg_type: OFPT_ERROR(1)
OFPErrorMsg(type=0x2, code=0x4, data=b'\x06\x0d\x00\x38\x07\x03\xa0\xcc\x00\x00\x01\x00\x00\x10\x00\x00\x00\x01\x00\x16\x80\x00\x00\x04\x00\x00\x00\x01\x80\x00\x06\x06\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x10\xff\xff\xff\xfb\xff\xe5\x00\x00\x00\x00\x00\x00')
|-- type: OFPET_BAD_ACTION(2)
|-- code: OFPBAC_BAD_OUT_PORT(4)
-- data: version=0x6, msg_type=0xd, msg_len=0x38, xid=0x703a0cc
`-- msg_type: OFPT_PACKET_OUT(13)
so, I am wondering, why it generates 'bad out port' error, what has changed in 'out ports' or in 'actions' between v1.4 and v1.5 of openflow protocols?
Thanks
Related
I'm trying to run the sample program from this RedisLabs page.
I chose Option A - which was to set up the free Redis cloud server.
(Seems like if you install manually, then you have to add the JSON as a plugin.)
I'm able to connect and use other "set" commands, but getting error on JSON:
File "C:\Users\nwalt\.virtualenvs\TDAmeritradeGetQuotes\lib\site-packages\redis\client.py", line 901, in execute_command
return self.parse_response(conn, command_name, **options)
File "C:\Users\nwalt\.virtualenvs\TDAmeritradeGetQuotes\lib\site-packages\redis\client.py", line 915, in parse_response
response = connection.read_response()
File "C:\Users\nwalt\.virtualenvs\TDAmeritradeGetQuotes\lib\site-packages\redis\connection.py", line 756, in read_response
raise response
redis.exceptions.ResponseError: unknown command 'JSON.SET'
My Python test program (except put in the sample endpoint before posting):
import redis
import json
import pprint
host_info = "redis.us-east-1-1.ec2.cloud.redislabs.com"
redisObj = redis.Redis(host=host_info, port=18274, password='xxx')
print ("Normal call to Redis")
redisObj.set('foo', 'bar')
value = redisObj.get('foo')
print(value)
capitals = {
"Lebanon": "Beirut",
"Norway": "Oslo",
"France": "Paris"
}
print ("capitals - before call to Redis")
pprint.pprint(capitals)
print("JSON call to Redis")
redisObj.execute_command('JSON.SET', 'doc', '.', json.dumps(capitals))
print("Data Saved, now fetch data back from redis")
reply = json.loads(redisObj.execute_command('JSON.GET', 'doc'))
print("reply from Redis get")
pprint.pprint(reply)
This is the screen shot from their website where I created the database. I didn't see any option to enable JSON or add any modules.
Not sure this was available when I created the REDIS database, but it is now. When you create it on redislabs.com, you can turn on the modules, and pick one from the list.
Then use this library: "rejson" from https://pypi.org/project/rejson/ to get the method "jsonset" method, using such code such as this:
rj = Client(host=config_dict['REDIS_CONFIG_HOST'], port=config_dict['REDIS_CONFIG_PORT'], password=config_dict['REDIS_CONFIG_PASSWORD'], decode_responses=True)
out_doc = {}
out_doc['firstname'] = "John"
out_doc['lastname'] = "Doe"
rj.jsonset('config', Path.rootPath(), out_doc)
get_doc = rj.jsonget('config', Path.rootPath())
pprint.pprint(get_doc)
I'm not used the cloud redis, in my local the Python don't load the JSON.SET
I just so make done, in this sample https://onelinerhub.com/python-redis/save-json-to-redis
I am using below configuration of syslog-ng OS. Our purpose is to get the syslog message from device and relay the same message to analytic tool. We want to have row log message as shown below , to be sent to analytic tool without removing any character (i.e. ',") from original message. providing configuration file , original log and processed log (by syslog-ng). We also want to get rid of additional header or timestamp added by syslog-ng.
Configuration file
Used version:- Version: 3.2.5
options {flush_lines (0);time_reopen (10);log_fifo_size (1000);long_hostnames (off);use_dns (no); use_fqdn (no);create_dirs (no);keep_hostname (yes);keep-timestamp(no);};
source slocal{syslog(port(514) transport("udp")flags(no-parse) );};
template t_syslog {template("${MESSAGE}\n");template-escape(yes);};
destination dfgtall { file("/var/netwitness/fgtall.log" template(t_syslog)); };
log { source(slocal);destination(dfgtall); };
Original log
date=2020-03-07 time=20:46:02 devname="ABCD" devid="FGT" logid="0000000013" type="traffic" subtype="forward" level="notice" vd="VDOM-Int" eventtime=1583594162 srcip=1.1.1.1 srcport=55498 srcintf="LAN" srcintfrole="lan" dstip=10.10.10.1 dstport=21 dstintf="EXTERNAL" dstintfrole="wan" sessionid=583411984 proto=6 action="deny" policyid=0 policytype="policy" service="FTP" dstcountry="United States" srccountry="Reserved" trandisp="noop" duration=0 sentbyte=0 rcvdbyte=0 sentpkt=0 appcat="unscanned" crscore=30 craction=131072 crlevel="high"
Received log message
<5>Jul 20 14:41:42 root: date=2020-03-07 time=20:46:02 devname=ABCD devid=FGT logid=0000000013 type=traffic subtype=forward level=notice vd=VDOM-Int eventtime=1583594162 srcip=1.1.1.1 srcport=55498 srcintf=LAN srcintfrole=lan dstip=10.10.10.1 dstport=21 dstintf=EXTERNAL dstintfrole=wan sessionid=583411984 proto=6 action=deny policyid=0 policytype=policy service=FTP dstcountry=United States srccountry=Reserved trandisp=noop duration=0 sentbyte=0 rcvdbyte=0 sentpkt=0 appcat=unscanned crscore=30 craction=131072 crlevel=high
syslog-ng v3.2.5 is really old. Please upgrade to a newer version.
Using flags(no-parse) in the source, and the proper template in the destination config ($MESSAGE\n) are the key here.
The following snippet works as expected with syslog-ng v3.28:
source s_udp {
syslog(
port(514)
transport("udp")
flags(no-parse)
);
};
destination dfgtall { file("/tmp/fgtall.log" template("${MESSAGE}\n")); };
log {
source(s_udp);
destination(dfgtall);
};
I'm trying to integrate a Datadog monitor check on sshd process in my terraform codebase, but I'm getting datadog_monitor.host_is_up2: error updating monitor: API error 400 Bad Request: {"errors":["The value provided for parameter 'query' is invalid"]}
What I did was to copy the monitor's query I created on the Datadog panel and pasted it into the tf file:
resource "datadog_monitor" "host_is_up2" {
name = "host is up"
type = "metric alert"
message = "Monitor triggered"
escalation_message = "Escalation message"
query = "process.up.over('process:ssh').last(4).count_by_status()"
thresholds {
ok = 0
warning = 1
critical = 2
}
notify_no_data = false
renotify_interval = 60
notify_audit = false
timeout_h = 60
include_tags = true
silenced {
"*" = 0
}
}
ofc the query example "avg(last_1h):avg:aws.ec2.cpu{environment:foo,host:foo} by {host} > 2" works
What's the right way to check via Datadog API or terraform if a specific service, like sshd, is up or not?
There are two error in your code:
The type used is wrong. It should be service check instead of metric alert.
You need to enclose process.up in a pair of ''.
Once done, your code will run flawlessly.
I have working code where two peers are connecting over a relay server (coturn) and everything seems to be fine over pseudo-tcp. I've tested message exchange successfully with nice_agent_attach_recv() and nice_agent_get_io_stream().
But when I try to create a GTlsClientConnection I get back: 0:TLS support is not available
Here is some partial code:
if(!nice_agent_set_relay_info(agent, stream_id,
NICE_COMPONENT_TYPE_RTP,
"my.coturn.server",
5349, //tls-listener-port (I also tried the non tls port: 3478)
username.c_str(),
password.c_str(),
NICE_RELAY_TYPE_TURN_TCP))
{
printf("error setting up relay info\n");
}
...
//after state has changed to NICE_COMPONENT_STATE_READY
...
io_stream = nice_agent_get_io_stream (agent, stream_id, component_id);
input = g_io_stream_get_input_stream (G_IO_STREAM (io_stream));
output = g_io_stream_get_output_stream (G_IO_STREAM (io_stream));
GIOStream* tlsConnection = g_tls_client_connection_new
(G_IO_STREAM (io_stream), NULL, &error);
/////////////////////////
/// error == 0 (TLS support is not available)
I am new to libnice and glib. So, I may be missing something basic.
Probably need the glib-networking package installed.
I'm trying to send a group of files to a remote server through no-ack's python byndings for libssh2, but I am totally lost regarding the library usage due to the lack of documentation.
I've tried using the C docs for libssh2 unsuccesfully.
Since I'm using python 3.2, paramiko and pexpect are out of the question.
Anyone can help?
EDIT: I just found some code in no-Ack's blog comments to his post.
import libssh2, socket, os
SERVER = 'someserver'
username = 'someuser'
password = 'secret!'
sourceFilePath = 'source/file/path'
destinationFilePath = 'dest/file/path'
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((SERVER, 22))
session = libssh2.Session()
session.startup(sock)
session.userauth_password(username, password)
sourceFile = open(sourceFilePath, 'rb')
channel = session.scp_send(destinationFilePath, 0o644, os.stat(sourceFilePath).st_size)
while True:
data = sourceFile.read(4096)
if not data:
break
channel.write(data)
exitStatus = channel.exit_status()
channel.close()
Seems to work fine.
And here's how to get files with libssh2 in Python 3.2. Major kudos to no-Ack for showing me this. You'll need the Python3 bindings for libssh2 https://github.com/wallunit/ssh4py
import libssh2, socket, os
SERVER = 'someserver'
username = 'someuser'
password = 'secret!'
sourceFilePath = 'source/file/path'
destinationFilePath = 'dest/file/path'
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((SERVER, 22))
session = libssh2.Session()
session.startup(sock)
session.userauth_password(username, password)
(channel, (st_size, _, _, _)) = session.scp_recv(sourceFilePath, True)
destination = open(destinationFilePath, 'wb')
got = 0
while got < st_size:
data = channel.read(min(st_size - got, 1024))
got += len(data)
destination.write(data)
exitStatus = channel.get_exit_status()
channel.close()
To do this in Python (i.e. not wrapping scp through subprocess.Popen or similar) with the Paramiko library.
Revelent : https://stackoverflow.com/a/69596/1270589
Below is easy but it is not universal means works if you run in linux dosent work if you run in windows. tell me if you know to make below universal i.e across all O.S platforms.
import os
os.system("sshpass -p 'your password' scp /opt/pysftp_server.txt root#172.19.113.87:/home")