snitch | Language agnostic tool that collects TODOs

 by   tsoding Go Version: Current License: MIT

kandi X-RAY | snitch Summary

kandi X-RAY | snitch Summary

snitch is a Go library. snitch has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A simple tool that collects TODOs in the source code and reports them as GitHub issues.
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              snitch has a low active ecosystem.
              It has 395 star(s) with 31 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 31 open issues and 99 have been closed. On average issues are closed in 104 days. There are 7 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of snitch is current.

            kandi-Quality Quality

              snitch has no bugs reported.

            kandi-Security Security

              snitch has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              snitch is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              snitch releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            snitch Key Features

            No Key Features are available at this moment for snitch.

            snitch Examples and Code Snippets

            No Code Snippets are available at this moment for snitch.

            Community Discussions

            QUESTION

            Error instantiating snitch class 'org.apache.cassandra.locator.Ec2Snitch'
            Asked 2021-Jun-08 at 18:23

            I'm having hard time setting up 2 node Cassandra cluster on Ec2 instances. This is 2.2.19 version. I cannot upgrade due to some other dependencies involved.

            The Ec2 instances are in private subnet. Assigned static private ips

            Here is my cassandra.yaml

            ...

            ANSWER

            Answered 2021-Jun-08 at 17:33

            Answering my own question

            Ec2snitch uses IMDVs1 to get metadata http://169.254.169.254/latest/meta-data/placement/availability-zone to determine certain properties.

            I created Ec2 instances through terraform where my code has

            Source https://stackoverflow.com/questions/67877314

            QUESTION

            how to disable dynamic_snitch on cassandra 3.11.9+ dynamic_snitch_badness_threshold cassandra.yaml param
            Asked 2021-Jun-03 at 16:59

            Can anyone explain which value should be put in order to disable dynamic_snitch? im not sure if 0 or high number (50+?)

            ...

            ANSWER

            Answered 2021-Jun-03 at 16:59

            You need to look into documentation that says:

            dynamic_snitch: whether the dynamic snitch should be enabled or disabled.

            For some reason it's not documented in the cassandra.yaml but you can find it in the source code. So just set this parameter to false

            Source https://stackoverflow.com/questions/67824299

            QUESTION

            Implementing multi-datacenter Cassandra with Phantom driver
            Asked 2021-May-02 at 16:50

            I'm working with Cassandra 3.x and Phantom driver (scala), and modifying my Cassandra deployment from a simple, three nodes cluster to a multi datacenter Cassandra deployment that consists of two datacenters:

            1. Transactional - the "main" datacenter, to which all reads/writes occur (except for reads/writes done by some analytics job).
            2. Analytics - a datacenter used for analytics purposes only. The analytics job should operate (i.e. read/write to) on this datacenter.

            Both datacenters are configured with the proper snitch and replication factor strategies.

            Based on this article ("Workload Separation" section), I'm supposed to be able to read/write from the "Transactional" datacenter, and run analytics jobs on the "Analytics" datacenter however, I'm not sure how to get this to work with the phantom driver.

            How can I configure the driver to read/write from the proper datacenter?

            Will setting the hosts in ContactPoints class to nodes from the Transactional datacenter only do the trick?

            ...

            ANSWER

            Answered 2021-May-02 at 16:50

            By default, Java driver 3.x uses so-called DCAware load balancing policy combined with TokenAware policy. Data center could be configured explicitly by using withLocalDc function of builder, but it could be omitted and driver will use the datacenter of the first contact point that was reached at initialization. So you can just point Phantom only to servers in the transactional DC, and it will work only with it (until you're using non-local consistency levels, such as QUORUM/SERIAL, EACH_QUORUM, etc.)

            Source https://stackoverflow.com/questions/67358237

            QUESTION

            Securing a localhost port for a Flask/Celery app running locally on 0.0.0.0 in Docker on MacOS
            Asked 2020-Sep-12 at 19:14

            My app has a Flask backend and an Angular/Electron frontend. The app runs locally on Mac Catalina. Flask, Celery and Redis are in separate docker containers, while the frontend is outside Docker. The Flask container is listening on port 0.0.0.0:5078. I've set CORS policy to allow messages from "127.0.0.1:4200" only, sent by the frontend. There's no need for internet connections. The backend containers will be launched by the frontend by emulating a terminal command. I'll install the app remotely on non-technical users' Catalina MacBooks.

            Question: According to Docker might be exposing ports to the world, Beware of exposing ports in Docker and Docker not blocked by macOS firewall, this use of 0.0.0.0:5078 is a security threat. How can I resolve this threat, eg by block ing any external connections to this port?

            Here's some python 3.8 code

            ...

            ANSWER

            Answered 2020-Sep-12 at 19:14

            A working solution is based on the David Maze and Matt's comments and on this question. These are the steps:

            1. Open Docker for Mac, Preferences and Docker Engine. Add "ip": "127.0.0.1" to the json config file.
            2. In the docker-compose, set ports to "127.0.0.1:5078:5078" for the web service.
            3. Leave the Dockerfile and the python code as before: ie, the flask host is still 0.0.0.0

            As I checked, messages from Electron's localhost 4201 went through. Also, running netstat -anvp tcp | awk 'NR<3 || /LISTEN/ shows that the insecure port 0.0.0.0.5078 is no longer exposed to the outside. `

            Source https://stackoverflow.com/questions/63709052

            QUESTION

            Adding a new cassandra node to an existing cluster, with a different snitch
            Asked 2020-Jul-24 at 11:29

            I have a cassandra cluster with 5 nodes that is using EC2 snitch but for the new node I want to add I want to use GossipingPropertyFileSnitch. Is it okay to have this node with a different snitch, will it cause any impact to the schema or schema versions?

            ...

            ANSWER

            Answered 2020-Jul-24 at 11:29

            All nodes in a cluster should use the same snitch since it is critical in determining the cluster topology and position of the replicas (to avoid them all being on the same rack for example.).

            Just as an experiment, I changed a node in a 3 node sandbox cluster to use a different snitch and while it did start up, when running nodetool status on the 2 nodes with different snitches, they reported very different topologies - as you would know, this is not a good thing at all.

            If you wish to move the whole cluster to GossipingPropertyFileSnitch, then there is a documented process on how to change the snitch of a cluster: https://docs.datastax.com/en/dse/6.8/dse-admin/datastax_enterprise/operations/opsSwitchSnitch.html

            You will find that there are versions of that page for different versions of DSE. You would change the snitch first via the process, then add the additional node.

            Source https://stackoverflow.com/questions/63072179

            QUESTION

            Cassandra assertion error after starting the second node
            Asked 2020-Jul-21 at 09:32

            I have a Cassandra cluster with two nodes with simple replication strategy.

            Everything worked well until one of nodes crashed. I recovered the crashed node by cloning the remaining node virtual machine (so we cloned a file system), and updated the listening and RPC address.

            Now I keep getting the following strange error.

            When I am running each single node, everything is working well. But when I am starting the second node, the first one falls back with an error!

            ...

            ANSWER

            Answered 2020-Jul-21 at 09:32

            If you cloned the virtual machine with all data, then you have all data of the first node, including the node's ID. To solve this problem, shutdown the 2nd node, delete all data from the data_file_directories and commit logs, leave only the first node as a seed node, and then start the 2nd node, so it will join the cluster as normal, and after this process finished, update the seed list (if you leave the 2nd node in the seed list, it won't join the cluster, but bootstrap a new cluster).

            Source https://stackoverflow.com/questions/63010128

            QUESTION

            Get info about iOS Simulator traffic
            Asked 2020-Jul-01 at 15:02

            When using a mobile Android Wi-Fi hot spot on macOS Catalina and MenuMeters utility to see total mobile traffic I noticed that every time I launch iOS Simulator (tested on iPhone Pro Max and iPhone SE 2nd generation both with iOS 13.5) it starts downloading huge amounts of data (approx. 450-800 MB) on every launch, so it gets rather expensive. I know that's Simulator because when I quit it traffic stops.

            So I'd like to find out what and why Simulator may download maybe to try to block/work around this expensive operations.

            I tried to use Charles and Proxyman to detect addresses Simulator could connect to - but with no avail, I cannot see this hundreds of megabytes there. Another option was Wireshark, but I do not know how I could use it to get what I want (as I imagine it should be some addresses from where Simulator could download data).

            Could you please give me some advices how to get needed info with these applications or in some other way.

            Edit

            Thanks to accepted answer and Little Snitch I was able to catch and block "evil" connection

            ...

            ANSWER

            Answered 2020-Jul-01 at 13:30

            If it's not appearing at all in Charles or Proxyman then it's probably not being sent over HTTP. Wireshark will show the raw TCP & UDP connections, but it's very complicated if you're not familiar with it, and there'll be a lot of info there.

            One good option for this is Little Snitch. It does exactly what you want, and can show you exactly who every app is connecting to and how much traffic is sent. It normally costs $30, but they let you try it out for free, and a quick check should be all you need.

            Source https://stackoverflow.com/questions/62677748

            QUESTION

            Fast replica in Cassandra
            Asked 2020-May-09 at 10:02

            As I am a newbie to Cassandra, I was confused with this term known as 'fast replica'. Basically what I know is dynamic snitch identifies the faster replica during the reading process and data from the faster replica is compared with the other replicas with the help of hash(for every message) and if the data is consistent then data from the fast replica is sent to the client or replicas go under the read repair(if the read consistency level is not met). What does exactly 'fast replica' means? Does it mean the read query doesn't need to query other nodes for the data? Please guide me through it. I couldn't find any relevant SO posts for this.

            ...

            ANSWER

            Answered 2020-May-05 at 01:01

            Cassandra uses phi accural failure detection alogrithm to identify the node's health. A dynamic snitch that sorts endpoints by latency with an adapted phi failure detector.

            What does exactly 'fast replica' means?

            The replica which is the top scorer in terms of latency and proximity.

            Does it mean the read query doesn't need to query other nodes for the data?

            As the score of replicas keep on changing dynamically and hence the fastest replica will keep on getting data request until it is not the top scorer anymore which makes sense.

            For more details you can check the code FD and DS

            Source https://stackoverflow.com/questions/61594574

            QUESTION

            Cannot change Cassandra datacenter
            Asked 2020-Apr-08 at 13:43

            After cassandra install via sudo apt install -y cassandra, cassandra is running, but I have not yet configured cassandra.yaml and cassandra-topology.properties. Once I configure them cassandra won't start because Cannot start node if snitch's data center (0) differs from previous data center (datacenter1)

            ...

            ANSWER

            Answered 2019-Nov-26 at 17:15

            Assuming that you don't care about the data stored, you can fix that by deleting everything in your data_file_directories. If you're not setting that, you'll find it at $CASSANDRA_HOME/data/data.

            Basically, the cluster metadata gets written in the system keyspace, which uses the local replication strategy (system is unique on each node). At start time, Cassandra verifies the stored metadata vs. the config properties being passed. When you change something about the node, Cassandra will throw an error on specific properties like cluster_name, dc, rack (and possibly a few others) when they don't match what's on disk.

            tl;dr;

            You probably only need to delete only the data for the system keyspace.

            But another option, would be to uncomment and set data_file_directories. Then the new node's system metadata would be written there, and the node would start.

            Source https://stackoverflow.com/questions/59054999

            QUESTION

            cassandra service (3.11.5) stops automaticall after it starts/restart on AWS linux
            Asked 2020-Feb-12 at 10:41

            cassandra service (3.11.5) stops automatically after it starts/restart on AWS linux.

            I have fresh installation of cassandra on new instance of AWS linux (t3.xlarge) and

            ...

            ANSWER

            Answered 2020-Feb-12 at 10:41

            The issue is in your log file:

            Source https://stackoverflow.com/questions/60185401

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