Using csshX (with examples)
- Osx
- November 5, 2023
1: Connect to multiple hosts
csshX hostname1 hostname2
Motivation:
The motivation for using this example is to connect to multiple hosts simultaneously using a single terminal window. This can be useful when managing a cluster of servers or when you need to perform the same action on multiple machines.
Explanation:
The command csshX is followed by multiple hostnames separated by spaces. This will open multiple SSH sessions to the specified hosts.
Example Output:
Multiple terminal windows will open, each connected to one of the specified hosts. You can now interact with each host independently.
2: Connect to multiple hosts with a given SSH key
csshX user@hostname1 user@hostname2 --ssh_args "-i path/to/key_file.pem"
Motivation:
The motivation for using this example is to connect to multiple hosts using a specific SSH key. This can be useful when managing servers that require different SSH keys for authentication.
Explanation:
In this example, we provide the SSH key file path using the --ssh_args option followed by the -i flag. The user@ prefix is optional and can be used to specify a specific user for each host.
Example Output:
Multiple terminal windows will open, each connected to one of the specified hosts. The specified SSH key will be used for authentication.
3: Connect to a pre-defined cluster from /etc/clusters
csshX cluster1
Motivation:
The motivation for using this example is to connect to a pre-defined cluster of hosts without having to specify each individual hostname. This can be particularly useful when managing a large number of hosts within a cluster.
Explanation:
In this example, cluster1 is the name of the cluster defined in the /etc/clusters file. The file should contain a list of hostnames under the cluster name. This allows for easy management and connection to predefined groups of hosts.
Example Output:
Multiple terminal windows will open, each connected to one of the hosts defined in cluster1 from the /etc/clusters file. You can now interact with each host independently.
