tcpkeepalive | Fine grained tcp keepalive control for golang | SSH library
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Fine grained tcp keepalive control.
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QUESTION
after a lot of support from reading the great posts here my first question:
I try to set up ssh with keys between a Mac and Windows 10 (20H2). What I did until now:
- generated keys on Mac, tested pub key with auto log onto raspberry, all fine.
- copied the pub keys to the win10, set up the access right according to https://askme4tech.com/how-install-and-configure-open-ssh-server-windows-10
- change the sshd_config to this
- if I try to ssh the win10, I get (with ssh -v) (only the last lines):
ANSWER
Answered 2021-May-03 at 07:07in case I stop the sshd on Win10 and start it not as a service, just with c:>sshd.exe
- In one case, sshd is run as a service, possibly with the LocalSystem account
- In the other, from comand-line, you are running sshd as you (your Windows account).
The environment would not be the same, especially for the "authorized_keys" file.
As mentioned in the documentation:
In Windows,
sshdreads configuration data from%programdata%\ssh\sshd_configby default, or a different configuration file may be specified by launchingsshd.exewith the-fparameter.
If the file is absent,sshdgenerates one with the default configuration when the service is started.
Activate the logs when running the ssh daemon as a Windows service, as seen here:
Open an admin powershell prompt and run:
QUESTION
How do I configure the property value that tcpkeepalive value is set to true?
I already tried
...ANSWER
Answered 2021-Jan-18 at 08:39Assuming this property is a connection property of the driver, you need to configure the dataSourceProperties property on hikari. You can do this like:
QUESTION
I have a local repository that was not pushed to bitbucket before.
My working folder (with the local .git folder) has grown to 1.7 GB, so I decided to push it to bitbucket, as an additional backup.
- I created a new bitbucket repo (workspace/repository.git)
- In my local repo, I added a new SSH remote called "origin" (git@bitbucket.org:workspace/repository.git)
- Note, that the id_rsa key is already set up locally and in bitbucket (for other projects)
- Now, I try a
git pushbut that always fails with the following error:
Output:
...ANSWER
Answered 2021-Jan-06 at 00:56I don't think this is related to the SSH key, which does authenticate you correctly to BitBucket.
This is more linked to a BitBucket repository size limit, as listed here: if you have a big giant commit which is more than 1GB, that would fail to upload.
Try and use on your local repository a tool like github/git-sizer to evaluate not just the global size of the repository, by also the size of its largest objects.
QUESTION
I'm interested in linking up a model in Anylogic 8.6 to a table/view in a Redshift database. This will allow the model to automatically pick up new data to define our populations and run, enabling better operational decision making (i.e. what are we expecting to happen tomorrow, tomorrow always shifting).
This version has native connectivity to an excel spreadsheet or to a SQL Server database. In the FAQ is a step-by-step guide to linking up to MySQL. I've adapted this guide to Redshift, but I'm quite unclear about how to get the connection to actually fire, or how to test if it's actually worked.
Here's what I've done:
- Downloaded the most recent JDBC driver from: https://docs.aws.amazon.com/redshift/latest/mgmt/configure-jdbc-connection.html
- I've extracted all driver files to the model's folder.
- I've opened the model in AnyLogic, selected the 'Projects' view and imported the driver JAR file on the 'Dependencies' tab (referenced the file RedshiftJDBC42-no-awssdk-1.2.50.1077.jar)
- Gone to the 'Advanced Java' properties of Main and typed the following line in the Import section:
import com.amazon.redshift.jdbc42.Driver;. The model compiles/builds with no error.
I'm not sure what to do next.
When I go to the database and try to import a table, I still only see the options for Excel/SQL server
From the 'Connectivity' palette, I've dragged 'Database' into the 'Main' part of the model. I've then
a) Selected the connection as 'Other database type'
b) in the 'JDBC Driver' section I've typed
com.amazon.redshift.jdbc42.Driverc) in the connection URL I've put in the following:
jdbc:redshift://:/?ssl=true&tcpKeepAlive=true&sslfactory=org.postgresql.ssl.NonValidatingFactory(this is standard connection string from workbench/dBeaver/KNIME and works with those, all of which are JDBC)d) used my usual username/password that I use for my normal SQL work
After doing this I still only see the usual options for importing a table. So I added in a 'query' item from the 'Connectivity' palette, and did a simple 'Select * from Table' - but it's unclear how I can get this into my local database...
What are my next steps? Or am I wasting my time here? Redshift connectivity would go a long way to getting our models suitable for more widespread operational use...
Many thanks in advance.
...ANSWER
Answered 2020-Oct-26 at 23:57Importing external database (DB) tables into the built-in AnyLogic DB is a separate thing from reading from / writing to external DBs via a Database object and the Connectivity palette elements. The latter does not affect/change the former.
The latter can be done for any JDBC-compliant DB as you've seen (and that's what the FAQ instructions are referring to).
The former is only supported for Excel/Access and SQL Server. (If you think about it, this requires the schema of the external DB to be translated into a schema for the built-in AnyLogic DB which is actually a standard HSQLDB database; thus by definition this is not a 'universal' operation even with the use of JDBC, hence why only certain external DBs are supported.)
So you can read from the Redshift DB and write into the internal AnyLogic DB to do a 'manual import' (which you could call as part of model initialisation); you can also avoid the Connectivity palette query elements and just do the SELECT queries in the standard Java way, perhaps using a visually-added Database object to get you the connection more easily.
But it's important to remember that this only gains you being able to use the built-in visual configuration of internal-DB-linked things like agent populations and properties of library blocks; you can always just do this via queries to the external DB directly (which means a bit more 'manual' code for setting up agent populations, for example). Plus you have the storage overhead of effectively having two copies of a DB, and any performance difference is unclear (trading off the one-off cost of the import vs. any possible improvement of 'local' HSQLDB queries thereafter).
It may also be possible to use the underlying AnyLogic Java API which it uses for DB imports (e.g., the importFromExternalDatabase function; search the help) to make this slightly simpler, but you'll still need pre-prepared internal DB tables setup (or write code to do something like parse the external DB schema and create appropriate HSQLDB tables).
QUESTION
I'm having some problems connecting to wsl from visual studio 2019 via ssh for c++ development . Windows Version : 10.0.18362 Build 18362 . ubuntu version on wsl : Ubuntu 18.04.4 LTS .
steps I followed to setup an ssh connection :
1- installed the ssh server sudo apt install openssh-server
2- edited the config file at /etc/ssh/sshd_config . my config is :
ANSWER
Answered 2020-Sep-21 at 11:20I didn't manage to add a connection through visual studio IDE so I used the ConnectionManager.exe tool . at first I got an error because the date was in Arabic but after I changed the date the connection was added successfully .
QUESTION
I'm using a Android cell phone. I write python program and run the program in Termux. But there some lib can't be installed or use in Android cell phone, sklearn and tensorflow for example. So I decided to try to use a docker container for my programing envirment. I create a docker image and update it to docker-hub: zwdnet/mypython. Then I installed qemu in Termux，and installed Alpine Linux (alpine-virt-3.10.1-x86_64) in Termux. I followed this pages' method(It is a Chinese blog, not English): https://stageguard.top/2019/08/15/run-docker-on-qemu-alpine/#1-Docker After this, I use the command
...ANSWER
Answered 2020-May-17 at 16:27You indicated in a comment that this user "zym" has UID 0. You also show that zym's home directory and .ssh directory are owned by UID 1000:
QUESTION
When I start Express, it crashes in about 5 minutes.
Use this dependencies.
- express 4.17.1
- mongoose 5.9.7
- tunnel-ssh 4.1.4
wait about 5 min after, got an error like this.
...ANSWER
Answered 2020-May-01 at 16:38SOLVED
QUESTION
I am getting this error when trying to use SQL pro to get into a remote DB. It works every now and then and not sure whats going on.
I have also run into this issue with GIT now where it asks for my passphrase.
I have updated permissions on dev/tty, tried deleting known_hosts, check permissions on ~/ssh/ and added authorized_keys file. Nothing works.
Error:
...ANSWER
Answered 2018-Feb-26 at 10:08I met this problem too when use SqlPro to connect the remote sql.
Firstly, you should confirm that you public key has been added into the Linux server, guess you have done this.
Secondly, this is the most import step. Please load the private key file
id_rsanot theid_rsa.pub
Hope this helps you.
QUESTION
I am having some strange issues trying to git clone one of my public GitHub repositories because of a weird issue. I know it's not an issue with my key, because I've taken the same key from another VM and just simply fixed its permissions. This is the error that I get when trying to use SSH:
ANSWER
Answered 2018-Sep-20 at 00:48Nevermind. Switched the network interface from NAT to bridged mode and now all is well. Crazy.
QUESTION
I have no idea why lately my git pull started to hang
I've tried this already
...ANSWER
Answered 2020-Mar-29 at 16:56In addition of traces, and protocols (SSH in your case), check the status of the remote hosting server you are pulling from.
For instance, GitHub had an incident yesterday, which can explain some delay in clone/pull request.
This DigitalOcean thread mentions:
I had to add outbound rule for SSH and DNS UDP
As mention in our discussion, the issue was /etc/ssh/ssh_config
Do you know why I kept trying to connect to BitBucket at port 8200 instead of 22 ? Where is the settings for that ?
That was the first line: Port 8080 to change to 22
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