jenkins - Losing connection during continuous integration -


i'm using digitalocean droplets continuous integration.

every time pushes on our github repository, droplet created. jenkins (on separated droplet) connects through ssh newly created droplet , launch shell script build , test project.

github changes -> jenkins (on droplet a) -> build/tests (on new droplet x)

github changes -> jenkins (on droplet a) -> build/tests (on new droplet y)

github changes -> jenkins (on droplet a) -> build/tests (on new droplet z)

the problem randomly, newly created droplet losing connection whatever tried connect during build. example, 2/10 droplets same content fail during "git pull" command message :

"ssh: connect host github.com port 22: connection timed out"

or

"[composerdownloadertransportexception] "https://api.github.com/repos/symfony/symfony/zipball/d3646cc6875c214d211001e0673ec9e91b5f2da7" file not downloaded: failed open stream: connection timed out "

there no iptables rules , ufw not enabled on droplets. randomly block connection services ?

any suggestions ?

[edit]

to clarify

  • it happened randomly during build, first 'git clone' command succeed 'git clone' failed 2 minutes after.

i facing same kind of issues git repos. created script try maximum 5 times if git command fails.

below script git_retry.
example: 

git_retry clone <clone_url>

script:

#!/bin/bash  max_retry_counter=5 retry_sleep=10  try_number=0  while ! git $@   if try_number=`expr $try_number + 1` && [ "$try_number" -lt $max_retry_counter ];       echo "warning: issue during git operation. try $try_number. retrying in $retry_sleep seconds..."     sleep $retry_sleep     echo   else     echo "error: issue during git operation. try $try_number..."     echo     exit 1   fi done

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