Why can't I access the Cassandra ports over a public IP?
For security reasons, the Cassandra ports in this solution cannot be accessed over a public IP address. To connect to Cassandra from a different machine, you must open ports 9042, 9160, 7000, 7001 and 7199 for remote access. Refer to the FAQ for more information on this.
How do I connect to Cassandra from a different machine?
To connect to Cassandra from a different machine, you must open ports 9042, 9160, 7000, 7001 and 7199 for remote access. Refer to the FAQ for more information on this.
What is the default listen port for Cassandra in Python?
In Cassandra 2.1, which uses the Datastax python driver, the default cqlsh listen port is 9042. The cassandra node should be bound to the IP address of your server's network card - it shouldn't be 127.0.0.1 or localhost which is the loopback interface's IP, binding to this will prevent direct remote access.
How to bind the Cassandra node to the loopback interface?
The cassandra node should be bound to the IP address of your server's network card - it shouldn't be 127.0.0.1 or localhost which is the loopback interface's IP, binding to this will prevent direct remote access. To configure the bound address, use the rpc_address parameter in cassandra.yaml.
How do I connect to Docker Cassandra?
Connecting to other containersStep 1: Create a network. $ docker network create app-tier --driver bridge.Step 2: Launch the Apache Cassandra server instance. ... Step 3: Launch your Apache Cassandra client instance.
How do I connect to local Cassandra?
The first way to test your connection, is with clqsh . Note that cqlsh will connect to "localhost" by default. If you are connecting to a host/IP other than localhost, then you will need to specify it on the command line.
How do I connect to Cassandra Cqlsh?
After you specify a keyspace, it's added to the prompt.Start the CQL shell: bin/cqlsh. The host information appears. Connected to Test Cluster at 127.0. 0.1:9042. [cqlsh 5.0. 1 | Cassandra 3.3. 0 | CQL spec 3.4. ... Switch to the cycling keyspace: USE cycling; The prompt now includes the keyspace name. cqlsh:cycling>
What is -- RM in Docker run?
The --rm causes Docker to automatically remove the container when it exits.
How do I access Cassandra database?
Apache Cassandra with SSLCreate a Apache Cassandra connection Open data source properties. ... Verify the version of the JDBC driver Verify that you use the JDBC driver of version 1.3, or later. ... Set VM options Open data source properties. ... Add the sslenabled option to the JDBC URL
How do I connect to Cassandra database from Linux?
Configuring Cassandra database on Unix or LinuxDownload the DataStax Enterprise Edition of Cassandra database.Install the DataStax Enterprise Edition for each of the node you wish in your Cassandra cluster.Configure the DataStax Enterprise Edition to setup the cassandra. ... Configure the keyspace for the cluster.
How do I access my Cassandra database remotely?
Remote access to Cassandra is via its thrift port for Cassandra 2.0. In Cassandra 2.0. x, the default cqlsh listen port is 9160 which is defined in cassandra. yaml by the rpc_port parameter.
What is Cqlsh in Cassandra?
cqlsh is a command-line interface for interacting with Cassandra using CQL (the Cassandra Query Language). It is shipped with every Cassandra package, and can be found in the bin/ directory alongside the cassandra executable.
How do I use Cassandra Cqlsh?
By default, Cassandra provides a prompt Cassandra query language shell (cqlsh) that allows users to communicate with it. Using this shell, you can execute Cassandra Query Language (CQL). execute a query....Starting cqlsh.OptionsUsagecqlsh --no-colorDirects Cassandra not to use colored output.8 more rows
How do I connect to a running docker container?
To connect to a container using plain docker commands, you can use docker exec and docker attach . docker exec is a lot more popular because you can run a new command that allows you to spawn a new shell. You can check processes, files and operate like in your local environment.
How do I run a container in privileged mode?
By default, containers do not run in a privileged mode. For a container to run as a privileged application, the user must “flag” it to enable all capabilities to the container or pod. In other words, when a container is in a privileged mode, you are giving the container all the capabilities that a host can perform.
What's a TTY docker?
The -t (or --tty) flag tells Docker to allocate a virtual terminal session within the container. This is commonly used with the -i (or --interactive) option, which keeps STDIN open even if running in detached mode (more about that later).
How do I open Cassandra Cqlsh?
ProcedureOpen Command Prompt.Navigate to the Cassandra bin directory.Type the command to start cqlsh. python cqlsh. Optionally, specify the IP address and port to start cqlsh on a different node. python cqlsh 1.2.3.4 9042.
How do I see all the tables in Cassandra?
Get keyspaces info. SELECT * FROM system_schema.keyspaces;Get tables info. SELECT * FROM system_schema.tables WHERE keyspace_name = 'keyspace name';Get table info. SELECT * FROM system_schema.columns WHERE keyspace_name = 'keyspace_name' AND table_name = 'table_name';
What protocol Cqlsh uses to connect to a Cassandra node?
cqlsh is implemented with the Python native protocol driver, and connects to the single specified node.
What is Cassandra yaml?
The cassandra. yaml file is the main configuration file for Cassandra. The cassandra. yaml file is the main configuration file for Cassandra. Important: After changing properties in the cassandra.
What is a docker command?
The docker command is nothing but the client application. The client and the daemon communicate via the docker API over a traditional Unix socket that you can find at /run/docker.sock or /var/run/docker.sock. The client asks the daemon to do something, or retrieve information, and the daemon does just that.
How to confirm a docker command?
To confirm the above statement, run any docker command at the end of this section (while testing) with the -l debug flag. This will print the exact command being executed on your local machine.
Why do I need to use Portainer?
Many monitoring tools, like Portainer, need access to the Docker API endpoint to monitor details like networks, running containers, etc. Normally to add a server to the endpoint list, you'd have to deploy a Portainer agent on the server first and bind some port from the container to the host. Instead, you could just let it access the docker daemon directly, this would save a lot of your resources.
What does SSH do to a remote host?
When using the SSH protocol for remote docker access what happens is that the docker client actually runs an ssh command on the local host, with a hidden docker command (docker system dial-stdio) on the remote host, that establishes a connection to the remote's dockerd endpoint which is almost always /var/run/docker.sock, and forward the connection to the commands stdio.
What flag do you use to run a docker?
Alternatively, you can also use the -H flag like I've done here with the docker command
What is genrsa in OpenSSL?
genrsa: This option tells openssl to generate a private key based on the RSA algorithm.
How to copy a public key to a remote server?
Use ssh-copy-id user@ip command to copy over the public key to the remote server.
What Is Docker Remote Access?
Method 1: Setup Remote Docker Access Using Ssh
- One of the best thing about using SSHhere is that it requires a lot less work than the other method. If you already have SSH keys set up, it's literally a one-step process. Before moving forward I want you to have this mental picture in place, for understanding how this SSH method works, and why it's configured the way it's configured. To confirm t...
Method 2: Using A Public TCP Port with TLS Authentication
- This method is more complicate than the previous one, but has it's advantages like not having to use the dockergroup at all. The idea here is simple, you're going to create your own certificates and private keys, and then use a TCP port to access the dockerdaemon through not plain HTTP, but a secure HTTPS channel. It is analogous to a website. In case of a website, you configure it …
Preparing The Certificates and Keys
- In the following steps, you'll be generating certificates and private keys for your server and client. Certificate Authority To make the transactions simple, I'll be using my client machine to generate all the files. You can use a separate machine for that if necessary. A CA certificate is nothing but a self-signed certificate. But first, you need to generate your CA's private key. Use the following co…
Setting Up The Environment
- Once the certificates and private keys are ready, you need to tell your docker engine and client about them, along with exposing the engine API to a public TCP port and letting the client use the docker engine that's not sitting at the local machine. The following steps go through exactly that. The docker host First, copy over three files from the administrator's machine, the CA certificate (…
Test The Setup
- Now that everything is done, you can test it by running docker info, or run any random container, whichever comes to your mind. You can also use curl to test it (Remember? These are simple HTTP requests). Use the following as an alternative to docker info This will output a JSON object that you can parse using something like jq. You can also try and run an Nginx server with docker…
Which Method to use? TCP Or Ssh?
- Both methods has their own merits. The SSH method is easier if you don't want to go through many hoops. But some applications like Portainer won't work with the SSH method for remote daemon access. Using the TCP method also eliminates the issues of "using or not using the docker group" by default. Choose whichever method satisfies your purpose. I hope this tutorial …