What should I do if golang cannot be downloaded?

In recent years, Golang has become an increasingly popular programming language, attracting more and more developers and enterprises to use it. However, if you encounter the problem of download failure when using Golang, don't panic, I will give you some solutions below.

First of all, you need to make it clear that this problem is caused by Golang download problem. You can check by executing the following command:

go env

This command will output your current environment variables, including Golang related paths and proxy settings. Next, we can try to solve the download problem based on the information of environment variables.

In the first case, if you suddenly encounter an error when executing the go get command, such as:

# cd .; /usr/local/go/bin/go install -i syscall: signal: killed

At this time, it is very likely that you are downloading some large packages. Golang It occupies a large amount of memory, resulting in being killed by the system. If this happens, you can try to increase the memory limit by executing the following command:

sudo sysctl -w kernel.pid_max=4194303
sudo sysctl -w kernel.threads-max=1048576
sudo sysctl -w kernel.max_map_count=262144

This way you can increase the memory limit of Golang to avoid downloading being killed.

In the second case, if you find that the download speed of Golang is very slow, it may be because you have not set up a proxy. You can set up a proxy by executing the following command:

export GOPROXY=https://goproxy.io

Here I used goproxy.io, a domestic proxy acceleration. You can use other proxies, but it should be noted that some proxies may be unstable or have security issues. question and need to be used with caution.

In the third case, if you encounter an error like this when executing the go get command:

permission denied

This may be because your user does not have permission to access or operate related files or folder. You can try to use the sudo command to execute the go get command as a super user:

sudo go get xxx

It should be noted that you must be very careful when using sudo to avoid unnecessary impact on the system.

Finally, if you feel that none of the above methods can solve your problem, then you can try to install Golang manually. You can download the installation package through the Golang official website and install it manually, which can also solve the problem of download failure.

To summarize, the download failure of Golang may be due to the memory usage exceeding the limit, incorrect proxy settings, insufficient permissions and other reasons. We can try to solve this problem based on the specific situation. Although Golang is a very excellent programming language, it is inevitable that there will be some minor problems. The key is that we must be good at discovering and solving these problems.

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