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In addition to the Local/Global package conflict issue described above, other issues can arise involving R Studio Server (or less commonly, command-line R). If all else fails, submit a help request to our rctf-support@utexas.edu support email.
Browser issues
A number of issues can occur when attempting to reach the RStudio server from a browser. A common one is the "This site can't be reached" browser error (Windows), which may indicate a browser-related security issue.
For this and other initial connection related problems:
- Close all browser windows and restart your computer.
- Fragmented RAM (computer memory) can sometimes cause problems.
- Make sure the browser software being used is the latest version.
- Try different browsers (e.g. Firefox instead of Chrome, Microsoft Edge, or Safari).
- If it is a security issue, a different browser may indicate that there are security risks accessing the website, but give the option to accept the risk and go ahead.
- Try accessing the site from an "Incognito" or "Private" browser window (usually found in an options menu in the upper right of a browser's taskbar.
- This can bypass browser cache or cookie issues that can interfere with connections.
EDU pod connection issue
An issue on the EDU pod may arise when students use the edupod.cns.utexas.edu virtual host to access RStudio server. The edupod.cns.utexas.edu virtual host acts as a front end load balancer for the request, and forwards it to one of the back-end compute servers. If this occurs, try accessing individual servers specifically:
- https://educcomp01.ccbb.utexas.edu
- https://educcomp02.ccbb.utexas.edu
- https://educcomp04.ccbb.utexas.edu
If accessing a specific server works when using the virtual host does not, please let us know by emailing our rctf-support@utexas.edu support email.
R Studio Server becomes unresponsive
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| Code Block |
|---|
mv ~/.rstudio ~/.rstudio.bak
mv ~/.RData ~/.RData.bak
mv ~/.local ~/.local.bak |
Note that .RData files may be in different directories. For example, if you a working in an R Project you have set up, there may be an .RData file in the project directory.
| Tip |
|---|
Large .RData files can be extremely slow to load from both R and R Studio Server. If you must save R data this way, consider renaming the .RData file to a different name so that it can be loaded explicitly only when needed, instead of always when R is invoked. |
"This site can't be reached" browser error
An error like "This site can't be reached; ERR_CONNECTION_RESET" (Windows) may indicate a browser-related security issue.
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Disk quota exceeded
Another type of problem can arise when a user's 100 GB Home directory quota has been exceeded (not applicable on the EDU pod). This can produce errors when trying to start R Studio Server or R, perform work in R, or even install additional packages. For example, you may see a "Cannot connect to service" message after logging in to R Studio Server. Or, if an R session has been established and saving a new file would exceed the Home directory quota, users will often (but not always) see an error like the following:
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