snitch | Keep updated about all deploys on Tsuru | Continuous Deployment library
kandi X-RAY | snitch Summary
kandi X-RAY | snitch Summary
Keep updated about each deploy via Tsuru. This program will notify your team and many tools when someone has deployed any application via Tsuru.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Execute executes the hooks
- executeHook executes the hook with the given configuration .
- Execute the hook
- Run the main process
- GetEnv gets an env from a string
- readBytes reads configuration data from YAML data .
- ReadConfigFile reads a configuration file
- callHook invokes a hook .
- define hook name
- Validates fields
snitch Key Features
snitch Examples and Code Snippets
Lines of Code : 8License : Permissive (MIT)
Copyslack:
webhook_url: http://your.webhook.here
slack:
webhook_url: $SLACK_WEBHOOK_URL
hooks:
build:
- curl -sSL https://github.com/lucasgomide/snitch/releases/download/0.1.0/snitch_0.1.0_linux_amd64.tar.gz | tar xz
- ./snitch_linux/snit Community Discussions
Trending Discussions on snitch
QUESTION
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 17:33Answering 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
QUESTION
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 16:59You 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
QUESTION
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:
- Transactional - the "main" datacenter, to which all reads/writes occur (except for reads/writes done by some analytics job).
- 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 16:50By 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.)
QUESTION
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 19:14A working solution is based on the David Maze and Matt's comments and on this question. These are the steps:
- Open Docker for Mac, Preferences and Docker Engine. Add
"ip": "127.0.0.1"to the json config file. - In the docker-compose, set
portsto"127.0.0.1:5078:5078"for thewebservice. - 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.
`
QUESTION
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 11:29All 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.
QUESTION
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 09:32If 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).
QUESTION
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 13:30If 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.
QUESTION
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 01:01Cassandra 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.
QUESTION
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 17:15Assuming 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.
QUESTION
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 10:41The issue is in your log file:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install snitch
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
