Hi! I've been using Tramp for a few years now with good success -- but something just changed, either in Tramp, AWS, or Fedora Linux.
I have not changed anything in my .emacs; however, I did recently reboot and upgrade to kernel 5.3.6-200.fc30.x86_64. So far as I know, AWS hasn't changed: I can still connect via ssh. Tramp's main complaint is [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic). Below is the (anonymized) result of tramp-verbose 10 on a freshly started Emacs. Thanks for your stellar work, Fred ;; Emacs: 26.2 Tramp: 2.3.5.26.2 -*- mode: outline; -*- ;; Location: /usr/share/emacs/26.2/lisp/net/tramp.elc Git: nil 14:44:24.000878 tramp-get-connection-property (7) # case-insensitive undef 14:44:24.001449 tramp-get-file-property (8) # <remote-file-name> file-directory-p undef 14:44:24.001522 tramp-get-connection-property (7) # test undef 14:44:24.001565 tramp-get-test-command (5) # Finding a suitable ‘test’ command 14:44:24.001611 tramp-get-connection-property (7) # process-name nil 14:44:24.001657 tramp-get-connection-property (7) # process-name nil 14:44:24.001701 tramp-get-connection-property (7) # process-buffer nil 14:44:24.001748 tramp-get-connection-property (7) # process-buffer nil 4:44:24.001791 tramp-set-connection-property (7) # process-buffer nil 14:44:24.001929 tramp-maybe-open-connection (3) # Opening connection for [email protected] using ssh... 14:44:24.006987 tramp-get-local-locale (7) # locale en_US.utf8 14:44:24.007112 tramp-get-connection-property (7) # login-args undef 14:44:24.007173 tramp-get-connection-property (7) # login-args undef 14:44:24.007277 tramp-ssh-controlmaster-options (4) # Computing ControlMaster options... 14:44:24.007348 tramp-call-process (6) # ‘ssh -o ControlMaster’ nil *temp* 14:44:24.010816 tramp-call-process (6) # 255 command-line line 0: missing argument. 14:44:24.010899 tramp-call-process (6) # ‘ssh -o ConnectTimeout=1 -o ControlPath=%C 0.0.0.1’ nil *temp* 14:44:25.016443 tramp-call-process (6) # 255 Pseudo-terminal will not be allocated because stdin is not a terminal. ssh: connect to host 0.0.0.1 port 22: Connection timed out 14:44:25.016559 tramp-call-process (6) # ‘ssh -o ControlPersist’ nil *temp* 14:44:25.019551 tramp-call-process (6) # 255 command-line line 0: Missing ControlPersist argument. 14:44:25.019630 tramp-ssh-controlmaster-options (4) # Computing ControlMaster options...done 14:44:25.019715 tramp-get-connection-property (7) # process-name nil 14:44:25.019767 tramp-get-connection-property (7) # process-buffer nil 14:44:25.020967 tramp-set-connection-property (7) # vector (tramp-file-name ssh ec2-user nil xx.xxx.xxx.xxx nil <remote-file-name> nil) 14:44:25.021049 tramp-maybe-open-connection (6) # /bin/sh -i 14:44:25.021105 tramp-get-connection-property (7) # vector (tramp-file-name ssh ec2-user nil xx.xxx.xxx.xxx nil <remote-file-name> nil) 14:44:25.021169 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.021220 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.022048 tramp-accept-process-output (10) # *tramp/ssh [email protected]* run t #$ 14:44:25.022106 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.022154 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.022205 tramp-wait-for-regexp (6) # #$ 14:44:25.022267 tramp-get-connection-property (7) # login-program undef 14:44:25.022324 tramp-get-connection-property (7) # login-args undef 14:44:25.022378 tramp-get-connection-property (7) # login-env undef 14:44:25.022438 tramp-get-connection-property (7) # async-args undef 14:44:25.022492 tramp-get-connection-property (7) # connection-timeout undef 14:44:25.022544 tramp-get-connection-property (7) # temp-file undef 14:44:25.022631 tramp-set-connection-property (7) # temp-file /tmp/tramp.0CzWga 14:44:25.029507 tramp-maybe-open-connection (3) # Sending command ‘exec ssh -l ec2-user -o ControlMaster=auto -o ControlPath='tramp.%C' -o ControlPersist=no -e none xx.xxx.xxx.xxx’ 14:44:25.029575 tramp-get-connection-property (7) # process-name nil 14:44:25.029630 tramp-get-connection-property (7) # remote-echo nil 14:44:25.029679 tramp-send-command (6) # exec ssh -l ec2-user -o ControlMaster=auto -o ControlPath='tramp.%C' -o ControlPersist=no -e none xx.xxx.xxx.xxx 14:44:25.029729 tramp-get-connection-property (7) # process-name nil 14:44:25.029780 tramp-get-connection-property (7) # chunksize nil 14:44:25.029828 tramp-set-connection-property (7) # last-cmd-time (23987 17033 29813 651000) 14:44:25.029883 tramp-send-string (10) # exec ssh -l ec2-user -o ControlMaster=auto -o ControlPath='tramp.%C' -o ControlPersist=no -e none xx.xxx.xxx.xxx 14:44:25.029930 tramp-get-connection-property (7) # process-buffer nil 14:44:25.030007 tramp-set-connection-property (7) # first-password-request 14:44:25.030120 tramp-process-actions (3) # Waiting for prompts from remote shell... 14:44:25.971053 tramp-accept-process-output (10) # *tramp/ssh [email protected]* run t [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic). 14:44:25.971140 tramp-process-one-action (5) # Looking for regexp "\(.*\(user\|login\)\( .*\)?: *\)\'" from remote shell 14:44:25.971194 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.971244 tramp-get-connection-property (7) # check-remote-echo nil 14:44:25.971497 tramp-process-one-action (5) # Looking for regexp "\(^.*\(\(?:adgangskode\|contrase\(?:\(?:ny\|ñ\)a\)\|geslo\|h\(?:\(?:asł\|esl\)o\)\|iphasiwedi\|jelszó\|l\(?:ozinka\|ösenord\)\|m\(?:ot de passe\|ật khẩu\)\|pa\(?:rola\|s\(?:ahitza\|s\(?: phrase\|code\|ord\|phrase\|wor[dt]\)\|vorto\)\)\|s\(?:alasana\|enha\|laptažodis\)\|wachtwoord\|лозинка\|пароль\|ססמה\|كلمة السر\|गुप्तशब्द\|शब्दकूट\|গুপ্তশব্দ\|পাসওয়ার্ড\|ਪਾਸਵਰਡ\|પાસવર્ડ\|ପ୍ରବେଶ ସଙ୍କେତ\|கடவுச்சொல்\|సంకేతపదము\|ಗುಪ್ತಪದ\|അടയാളവാക്ക്\|රහස්පදය\|ពាក្យសម្ងាត់\|パスワード\|密[码碼]\|암호\)\).*:\0? *\)\'" from remote shell 14:44:25.971624 tramp-process-one-action (5) # Looking for regexp "\(^.*\(Connection \(?:\(?:clo\|refu\)sed\)\|Host key verification failed\.\|Login \(?:[Ii]ncorrect\)\|N\(?:ame or service not known\|o supported authentication methods left to try!\)\|Permission denied\|\(?:Sorry, try again\|Timeout, server not responding\)\.\).*\|^.*\(Received signal [0-9]+\).*\)\'" from remote shell 14:44:25.971711 tramp-process-one-action (5) # Looking for regexp "\(^[^#$%> ]*[#$%>] *\)\'" from remote shell 14:44:25.971771 tramp-process-one-action (5) # Looking for regexp "\(\(?:^\| \)[^]#$%> ]*#?[]#$%>] *\( \[[0-9;]*[a-zA-Z] *\)*\)\'" from remote shell 14:44:25.971837 tramp-process-one-action (5) # Looking for regexp "\(\(Are you sure you want to continue connecting (yes/no)\?\)\s-*\)\'" from remote shell 14:44:25.971897 tramp-process-one-action (5) # Looking for regexp "\(\(\(?:Store key in cache\? (y/\|Update cached key\? (y/n, Return cancels connectio\)n)\)\s-*\)\'" from remote shell 14:44:25.971953 tramp-process-one-action (5) # Looking for regexp "\(\(TERM = (.*)\|Terminal type\? \[.*\]\)\s-*\)\'" from remote shell 14:44:25.972008 tramp-process-one-action (5) # Looking for regexp "\(\)\'" from remote shell 14:44:25.972063 tramp-process-one-action (5) # Call ‘tramp-action-process-alive’ 14:44:25.972123 tramp-get-connection-property (7) # process-buffer nil 14:44:25.972172 tramp-process-actions (6) # [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic). 14:44:25.974188 tramp-get-connection-property (7) # process-buffer nil 14:44:25.974898 tramp-process-actions (10) # backtrace() tramp-error((tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil) file-error "Tramp failed to connect. If this happens repeatedly, try\012 ‘M-x tramp-cleanup-this-connection’") apply(tramp-error (tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil) file-error "Tramp failed to connect. If this happens repeatedly, try\012 ‘M-x tramp-cleanup-this-connection’" nil) tramp-process-actions(#<process *tramp/ssh [email protected]*> (tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil) 1 ((tramp-login-prompt-regexp tramp-action-login) (tramp-password-prompt-regexp tramp-action-password) (tramp-wrong-passwd-regexp tramp-action-permission-denied) (shell-prompt-pattern tramp-action-succeed) (tramp-shell-prompt-pattern tramp-action-succeed) (tramp-yesno-prompt-regexp tramp-action-yesno) (tramp-yn-prompt-regexp tramp-action-yn) (tramp-terminal-prompt-regexp tramp-action-terminal) (tramp-process-alive-regexp tramp-action-process-alive)) 60) tramp-maybe-open-connection((tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil)) tramp-send-command((tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil) "test 0 2>/dev/null; echo tramp_exit_status $?") tramp-send-command-and-check((tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil) "test 0") tramp-get-test-command((tramp-file-name "ssh" "ec2-user" nil "xx.xxx.xxx.xxx" nil "<remote-file-name>" nil)) tramp-run-test("-d" "/ssh:[email protected]:<remote-file-name>") tramp-sh-handle-file-directory-p("/ssh:[email protected] :<remote-file-name>") apply(tramp-sh-handle-file-directory-p "/ssh:[email protected] :<remote-file-name>") tramp-sh-file-name-handler(file-directory-p "/ssh:[email protected] :<remote-file-name>") apply(tramp-sh-file-name-handler file-directory-p "/ssh:[email protected]:<remote-file-name>") tramp-file-name-handler(file-directory-p "/ssh:[email protected] :<remote-file-name>") file-directory-p("/ssh:[email protected]:<remote-file-name>") find-file-noselect("/ssh:[email protected]:<remote-file-name>" nil nil t) find-file("/ssh:[email protected]:<remote-file-name>" t) funcall-interactively(find-file "/ssh:[email protected]:<remote-file-name>" t) apply(funcall-interactively find-file ("/ssh:[email protected]:<remote-file-name>" t)) repeat-complex-command(1) funcall-interactively(repeat-complex-command 1) call-interactively(repeat-complex-command nil nil) command-execute(repeat-complex-command) recursive-edit() debug(error (error "There are no previous complex commands to repeat")) signal(error ("There are no previous complex commands to repeat")) error("There are no previous complex commands to repeat") repeat-complex-command(1) funcall-interactively(repeat-complex-command 1) call-interactively(repeat-complex-command nil nil) command-execute(repeat-complex-command) 14:44:25.975005 tramp-process-actions (1) # File error: Tramp failed to connect. If this happens repeatedly, try ‘M-x tramp-cleanup-this-connection’ [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic). 14:44:28.553971 tramp-maybe-open-connection (3) # Opening connection for [email protected] using ssh...failed 14:44:28.554775 tramp-get-file-property (8) # file-truename nil 14:44:28.554832 tramp-flush-directory-property (8) # 14:44:28.554889 tramp-get-connection-property (7) # process-name nil 14:44:28.554944 tramp-flush-connection-property (7) # (tramp-file-name ssh ec2-user nil xx.xxx.xxx.xxx nil nil nil) (process-buffer first-password-request) 14:44:28.555009 tramp-get-connection-property (7) # process-buffer nil
