rsync | extraordinarily versatile file copying tool | Incremental Backup library
kandi X-RAY | rsync Summary
kandi X-RAY | rsync Summary
Rsync is a fast and extraordinarily versatile file copying tool for both remote and local files. Rsync uses a delta-transfer algorithm which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand. At first glance this may seem impossible because the calculation of diffs between two files normally requires local access to both files. A technical report describing the rsync algorithm is included with this package.
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QUESTION
I have master-slave (primary-standby) streaming replication set up on 2 physical nodes. Although the replication is working correctly and walsender and walreceiver both work fine, the files in the pg_wal
folder on the slave node are not getting removed. This is a problem I have been facing every time I try to bring the slave node back after a crash. Here are the details of the problem:
postgresql.conf on master and slave/standby node
...ANSWER
Answered 2021-Jun-14 at 15:00You didn't describe omitting pg_replslot during your rsync, as the docs recommend. If you didn't omit it, then now your replica has a replication slot which is a clone of the one on the master. But if nothing ever connects to that slot on the replica and advances the cutoff, then the WAL never gets released to recycling. To fix you just need to shutdown the replica, remove that directory, restart it, (and wait for the next restart point to finish).
Do they need to go to wal_archive folder on the disk just like they go to wal_archive folder on the master node?
No, that is optional not necessary. It is set by archive_mode = always
if you want it to happen.
QUESTION
I am programming something and one of the things I need to do is to merge 2 directories. How do I do that? Rsync does not work. I tried compiling but after a few seconds it gave me errors.
These are the commands I ran (I ran these because the INSTALL.md said so):
...ANSWER
Answered 2021-Jun-13 at 19:24a simple and efficient way is with cp
QUESTION
I would like to have the files that have changed since the last push.
Currently I can find the difference on the last commit. However if I have several commits in one push, only the last commit is taken into account :
...ANSWER
Answered 2021-Jun-11 at 15:58The solution is to user git diff with ^!
:
QUESTION
I would like to use Python to scrape all links on the Civil Procedure URL of the Montana Code Annotated, as well as all pages linked on that page, and eventually capture the substantive text at the last link. The problem is that the base URL links to Chapters that also have URLs to Parts. And the Parts URLs have links to the text I want. So this is a "three deep" URL structure with a URL naming convention that does not use a sequential ending, like 1,2,3,4,etc.
I am new to Python, so I broke this down into steps.
FIRST, I used this to extract the text from a single URL with substantive text (i.e., three levels deep):
...ANSWER
Answered 2021-May-31 at 07:59You are iterating through url_list
twice.
Assuming you want the text of each href written to a file, removing the duplicated for loop, saving the results into a list scraped data, then writing that list to a file in its own for loop works
QUESTION
In my production environments I am failing to write to files. For example, I've set up a test-task with Celery that writes the time to a file every minute:
...ANSWER
Answered 2021-May-27 at 21:42To give credit where it is due. The problem and solution were elegantly put forward by @IainShelvington in the comments above.
Reason for problem: "Any files you write in a docker container will not be written to the host machine unless you mount a volume and write to that volume."
Solution for problem: "Add a new volume to the global "volumes:" in your compose config. Mount that volume in the "django" service, all the celery services inherit from that service so it should be shared. Write and read the files from the location that you mounted (this should be completely different from the app mount, like "/celery-logs" or something)"
To demonstrate what this solution would look like in my specific example, I added the following to my production.yml file:
QUESTION
I am trying to get the logs file that are older then 90 days and trying to send them to remote server that is ec2 instance. I am trying this command but it is not working.
...ANSWER
Answered 2021-May-27 at 14:26-i is option of ssh, not rsync. You are using -e. Good, but you have to pass to it all of ssh parameters in quotes. And second thing You have to tell rsync that You are piping something via stdin
find /var/log/* -mtime +90 -print0 | rsync --remove-source-files -av -e 'ssh -i keypair.pem' --files-from=- --from0 /var/log/ ubuntu@ip:/
https://unix.stackexchange.com/questions/87018/find-and-rsync
QUESTION
If you run a command in Terminal, say
rsync -avuP [SourcPath] [DestPath]
That command will get logged in, say .bash_history, .zsh_history, .bash_sessions, etc.
So if you make use of something as notoriously insecure as sshpass
say sshpass -P password -p MySecetPassword [Some command requiring std input]
, that too will be logged.
But what happens when you do the equivalent when spawning a process using Node JS?
...ANSWER
Answered 2021-May-25 at 02:46There isn't a node specific history file for execs unless you created one by logging the arguments. There can be lower level OS logging that captures this type of data, like an audit log.
Passing a password on the command line is still considered the least secure way.
Try -f
to pass a file or -d
for a file descriptor instead (or ssh keys should always be the first port of call)
The man page explains...
The -p option should be considered the least secure of all of sshpass's options. All system users can see the password in the command line with a simple "ps" command. Sshpass makes a minimal attempt to hide the password, but such attempts are doomed to create race conditions without actually solving the problem. Users of sshpass are encouraged to use one of the other password passing techniques, which are all more secure.
In particular, people writing programs that are meant to communicate the password programatically are encouraged to use an anonymous pipe and pass the pipe's reading end to sshpass using the -d option.
QUESTION
How can I find files from a directory and save those files in the subdirectories it was found in?
FileDirectory:
TestFolder
- Folder1
- FileFromFolder1.txt
- Folder2
- FileFromFolder2.txt
- Folder3
- FileFromFolder3.txt
- Folder1
Currently using this script:
...ANSWER
Answered 2021-May-20 at 23:27Add a -R
to your rsync
flags (not having tested this).
QUESTION
While transferring file(s) from a Linux system to Google Cloud Platform using the gsutil cp
command, it fails at some old ".eml" files when trying to process its content (not just file name!) which contains non-English characters not encoded in Unicode.
The command attempted was:
...ANSWER
Answered 2021-May-20 at 01:12I took your string with Chinese characters and was able to reproduce your error. I fixed it after updating to gsutil 4.62
. Here's the merged PR and issue tracker as reference.
Update Cloud SDK by running:
QUESTION
I am trying to get a container image to open on localhost (OpenVAS). I have done the following:
...ANSWER
Answered 2021-May-19 at 01:52The problem is that the container cannot run the updates with the following error:
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