Remotely checking out from git using ssh key forwarding.

Much of my work is done on machines that are only on load to me, not permanently assigned. Thus, I need to be able to provision them quickly and with a minimum of fuss. One action I routinely need to do is to check code out of a git server, such as gitlab.com. We use ssh keys to authenticate to gitlab. I need a way to do this securely when working on a remote machine. Here’s what I have found

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Print the line after a match using AWK

We have an internal system for allocating hardware to developers on a short term basis. While the software does have a web API, it is not enabled by default, nor in our deployment. Thus, we end up caching a local copy of the data about the machine. The machine names are a glom of architecture, and location. So I make a file with the name of the machine, and a symlink to the one I am currently using.

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Updated MCTP send code

While the existing documentation is good, there are a couple things that have changed since it was originally written, and I had to make a couple minor adjustments to get it to work. Here’s the code to send a message. The receive part should work as originally published; what is important is the set of headers. I built and ran this on an AARCH64 platform running Fedora 38.

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socket system call from python

While the Python socket API is mature, it does not yet support MCTP. I thought I would thus try to make a call from python into native code. The first step is to create a socket. Here is my code to do that.

Note that this is not the entire C code needed to make network call, just the very first step.I did include the code to read errno if the call fails.

#!/usr/bin/python3
from ctypes import *
libc = CDLL("/lib64/libc.so.6")
AF_MCTP = 45
SOCK_DGRAM  = 2
rc = libc.socket (AF_MCTP, SOCK_DGRAM, 0)
#print("rc = %d " % rc)
get_errno_loc = libc.__errno_location
get_errno_loc.restype = POINTER(c_int)
errno = get_errno_loc()[0]
print("rc = %d errno =  %d" % (rc, errno)   )
print("OK")

Running this code on my machine shows success

# ./spdm.py 
rc = 3 errno =  0
OK