continuous integration - A local run of expect script works fine, but hangs when ran through gitlab CI -

i'm writing expect file connect handle interaction remote device using script looks following, , facing few problems it. mainly, when run script stand-alone or interactively (on runner), works wish, when plug in code testing using gitlab ci on 1 of runners, has following problems:

1. the command spawn /usr/bin/scp $rsafile remote:/var/root/id_rsa.pub doesn't seem show in ci log (though first spawn /usr/bin/ssh remote command shows up) - suspect it's not being called @ all.
2. the same spawn command persistently gives me following message until script stops executing @ next interact command: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\n"
3. interact complains spawn id exp0 not open (which assume may because scp command not working properly)

here's code:

spawn /usr/bin/ssh remote  expect {     -re ".*assword:.*" {         exp_send "password\r";          exp_continue     }     -re ".*sh.*" {         exp_send "mount -uw /\r";         exp_send "nvram -somecommand"         exp_send "exit\r"     } }  interact  # copy on key set rsafile "/var/root/resources/id_rsa.pub" spawn /usr/bin/scp $rsafile remote:/var/root/id_rsa.pub;  expect {     # 1&2 added original script debugging purposes     -re "^id_rsa.pub.*" { #1: output i'd expect in case of successful scp         exp_send "exit\r"     }     -re ".*assword:.*" {         exp_send "password\r";         exp_send "exit\r"     }     -re "warning:.*warning.*warning.*" { #2: debug expect hanging         exp_send "exit\r"     } }  interact; 

here's error msg (expect on debug mode):

spawn /usr/bin/ssh remote  parent: waiting sync byte  parent: telling child go ahead  parent: unsynchronized child  spawn: returns {24373}  gate keeper glob pattern '.*assword:.*' '*assword:*'. activating booster. gate keeper glob pattern '.*sh.*' '*sh*'. activating booster.  expect: "" (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=no  warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.  expect: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\n" (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=no  root@fe80::cccc:48ff:fe33:3344%en4's password:   expect: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: " (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=yes re=yes  expect: set expect_out(0,string) "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: "  expect: set expect_out(spawn_id) "exp6"  expect: set expect_out(buffer) "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: "  send: sending "password\r" { exp6 }  expect: continuing expect  expect: "" (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=no  expect: "\r\n" (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=no  expect: "\r\n\u001b[?1034h" (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=no  -sh-3.2#   expect: "\r\n\u001b[?1034h-sh-3.2# " (spawn_id exp6) match regular expression ".*assword:.*"? gate "*assword:*"? gate=no  ".*sh.*"? gate "*sh*"? gate=yes re=yes  expect: set expect_out(0,string) "\r\n\u001b[?1034h-sh-3.2# "  expect: set expect_out(spawn_id) "exp6"  expect: set expect_out(buffer) "\r\n\u001b[?1034h-sh-3.2# "  send: sending "mount -uw /\r" { exp6 }  send: sending "nvram -some-command" { exp6 }  send: sending "exit\r" { exp6 }  interact: received eof spawn_id exp0  parent: waiting sync byte  parent: telling child go ahead  parent: unsynchronized child  spawn: returns {24376}  gate keeper glob pattern '^id_rsa.pub.*' 'id_rsa?pub*'. activating booster. gate keeper glob pattern '.*assword:.*' '*assword:*'. activating booster. gate keeper glob pattern 'warning:.*warning.*warning.*' ''. not usable, disabling performance booster.  expect: "" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? gate "id_rsa?pub*"? gate=no  ".*assword:.*"? gate "*assword:*"? gate=no  "warning:.*warning.*warning.*"? (no gate, re only) gate=yes re=no  expect: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? gate "id_rsa?pub*"? gate=no  ".*assword:.*"? gate "*assword:*"? gate=no  "warning:.*warning.*warning.*"? (no gate, re only) gate=yes re=no  expect: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? gate "id_rsa?pub*"? gate=no  ".*assword:.*"? gate "*assword:*"? gate=no  "warning:.*warning.*warning.*"? (no gate, re only) gate=yes re=no  expect: "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? gate "id_rsa?pub*"? gate=no  ".*assword:.*"? gate "*assword:*"? gate=no  "warning:.*warning.*warning.*"? (no gate, re only) gate=yes re=yes  expect: set expect_out(0,string) "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n"  expect: set expect_out(spawn_id) "exp1"  expect: set expect_out(buffer) "warning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\nwarning: permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ecdsa) list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n"  send: sending "exit\r" { exp1 }  interact: spawn id exp0 not open     while executing "interact"     (file "./resources/setup.command" line 44)  error: build failed: exit status 1 

any appreciated! in advance btw- problem annoying enough me figure out, first post stack overflow. :)

try this:

spawn /usr/bin/ssh remote  expect {     -re ".*assword:.*" {         exp_send "password\r";         exp_continue     }     -re ".*-sh-.*" {         exp_send "mount -uw /; nvram -somecommand; exit\r"         exp_continue     }     eof {} } wait  set rsafile "/var/root/resources/id_rsa.pub" spawn /usr/bin/scp $rsafile remote:/var/root/id_rsa.pub;  expect {     -re ".*assword:.*" {         exp_send "password\r";         exp_continue     }     eof {} } wait 

your interact may fail because @ time spawned process may have exited , cannot interact dead process.

for script, expect eof have same effect interact. wait spawned process finish. difference here timing. , expect eof not generate error when spawned process exits.