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Connection to IMAP server cyrus.andrew.cmu.edu hangs #85136

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tiran opened this issue Jun 12, 2020 · 10 comments · Fixed by #106022
Closed

Connection to IMAP server cyrus.andrew.cmu.edu hangs #85136

tiran opened this issue Jun 12, 2020 · 10 comments · Fixed by #106022
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@tiran
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3.7 (EOL) end of life 3.8 only security fixes 3.9 only security fixes 3.10 only security fixes easy tests Tests in the Lib/test dir type-bug An unexpected behavior, bug, or error

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@tiran
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tiran commented Jun 12, 2020 •
edited by bedevere-bot

BPO 40964
Nosy @vstinner, @tiran, @ned-deily, @ambv
PRs
  • bpo-40964: disable remote IMAP tests #20836
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = 'https://github.com/tiran'
closed_at = None
created_at = <Date 2020-06-12.18:43:06.859>
labels = ['type-bug', '3.8', '3.9', '3.10', '3.7', 'tests']
title = 'Connection to IMAP server cyrus.andrew.cmu.edu hangs'
updated_at = <Date 2020-09-11.10:31:13.514>
user = 'https://github.com/tiran'

    bugs.python.org fields:

    activity = <Date 2020-09-11.10:31:13.514>
actor = 'vstinner'
assignee = 'christian.heimes'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2020-06-12.18:43:06.859>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 40964
keywords = ['patch']
message_count = 7.0
messages = ['371403', '371406', '371407', '371410', '371411', '371412', '376714']
nosy_count = 4.0
nosy_names = ['vstinner', 'christian.heimes', 'ned.deily', 'lukasz.langa']
pr_nums = ['20836']
priority = None
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue40964'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']

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    @tiran
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    tiran commented Jun 12, 2020

    All buildbots and tests are currently failing because connections cyrus.andrew.cmu.edu:143 (IMAP) and cyrus.andrew.cmu.edu:993 (IMAPS) are hanging.

    @tiran tiran added release-blocker 3.7 (EOL) end of life 3.8 only security fixes 3.9 only security fixes 3.10 only security fixes tests Tests in the Lib/test dir labels Jun 12, 2020
    @ned-deily
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    New changeset 08b1bba by Christian Heimes in branch 'master':
    bpo-40964: disable remote IMAP tests (GH-20836)
    08b1bba

    @tiran
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    tiran commented Jun 12, 2020

    The remote server is having intermittent issues. Sometimes all three servers behind the host are gone, sometimes they block all packages.

    # nmap -vv cyrus.andrew.cmu.edu
    Starting Nmap 7.80 ( https://nmap.org ) at 2020-06-12 20:52 CEST
    Warning: Hostname cyrus.andrew.cmu.edu resolves to 3 IPs. Using 128.2.157.16.
    Initiating Ping Scan at 20:52
    Scanning cyrus.andrew.cmu.edu (128.2.157.16) [4 ports]
    Completed Ping Scan at 20:52, 0.13s elapsed (1 total hosts)
    Initiating Parallel DNS resolution of 1 host. at 20:52
    Completed Parallel DNS resolution of 1 host. at 20:52, 0.12s elapsed
    Initiating SYN Stealth Scan at 20:52
    Scanning cyrus.andrew.cmu.edu (128.2.157.16) [1000 ports]
    Completed SYN Stealth Scan at 20:52, 2.88s elapsed (1000 total ports)
    Nmap scan report for cyrus.andrew.cmu.edu (128.2.157.16)
    Host is up, received reset ttl 239 (0.11s latency).
    Other addresses for cyrus.andrew.cmu.edu (not scanned): 128.2.157.15 128.2.157.14
    rDNS record for 128.2.157.16: CYRUS.ANDREW.CMU.EDU
    Scanned at 2020-06-12 20:52:35 CEST for 3s
    Not shown: 979 closed ports
    Reason: 979 resets
    PORT STATE SERVICE REASON
    23/tcp filtered telnet no-response
    110/tcp filtered pop3 no-response
    135/tcp filtered msrpc no-response
    139/tcp filtered netbios-ssn no-response
    143/tcp filtered imap no-response
    445/tcp filtered microsoft-ds no-response
    515/tcp filtered printer no-response
    631/tcp filtered ipp no-response
    993/tcp filtered imaps no-response
    995/tcp filtered pop3s no-response
    1433/tcp filtered ms-sql-s no-response
    2000/tcp filtered cisco-sccp no-response
    2003/tcp filtered finger no-response
    2967/tcp filtered symantec-av no-response
    3389/tcp filtered ms-wbt-server no-response
    5555/tcp filtered freeciv no-response
    5900/tcp filtered vnc no-response
    5901/tcp filtered vnc-1 no-response
    5902/tcp filtered vnc-2 no-response
    5903/tcp filtered vnc-3 no-response
    9100/tcp filtered jetdirect no-response

    Read data files from: /usr/bin/../share/nmap
    Nmap done: 1 IP address (1 host up) scanned in 3.42 seconds
    Raw packets sent: 1025 (45.076KB) | Rcvd: 980 (39.200KB)

    # nmap -vv 128.2.157.16 128.2.157.14 128.2.157.15
    Starting Nmap 7.80 ( https://nmap.org ) at 2020-06-12 20:54 CEST
    Initiating Ping Scan at 20:54
    Scanning 3 hosts [4 ports/host]
    Completed Ping Scan at 20:55, 5.03s elapsed (3 total hosts)
    Nmap scan report for 128.2.157.16 [host down, received no-response]
    Nmap scan report for 128.2.157.14 [host down, received no-response]
    Nmap scan report for 128.2.157.15 [host down, received no-response]
    Read data files from: /usr/bin/../share/nmap
    Nmap done: 3 IP addresses (0 hosts up) scanned in 5.10 seconds
    Raw packets sent: 24 (912B) | Rcvd: 0 (0B)

    @tiran tiran added type-bug An unexpected behavior, bug, or error labels Jun 12, 2020
    @ned-deily
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    New changeset f919179 by Ned Deily (Christian Heimes) in branch '3.9':
    bpo-40964: disable remote IMAP tests (GH-20836)
    f919179

    @ned-deily
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    New changeset adce133 by Ned Deily (Christian Heimes) in branch '3.8':
    bpo-40964: disable remote IMAP tests (GH-20836)
    adce133

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    New changeset 0abb70e by Ned Deily (Christian Heimes) in branch '3.7':
    bpo-40964: disable remote IMAP tests (GH-20836)
    0abb70e

    @vstinner
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    The tests have been disabled, so I understand that the "release blocker" priority is no longer needed. It would be nice to reenable these tests, but I consider that it should not block the next 3.9 release.

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
    @erlend-aasland
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    These tests have been skipped since 2020. I see three possible ways to resolve this issue:

    1. remove the tests (they're not running anyway)
    2. remove the guards and cross our fingers
    3. amend the tests to automatically skip if the remote server is unavailable

    @vstinner
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    remove the tests (they're not running anyway)

    That sounds like a good idea to me.

    erlend-aasland added a commit to erlend-aasland/cpython that referenced this issue Jun 23, 2023
    @erlend-aasland
    pythongh-85136: Remove disabled remote IMAP tests
    74480f9 
    Tests had been disabled since Jun 12, 2020 (pythongh-20836).
    @bedevere-bot bedevere-bot mentioned this issue Jun 23, 2023
    Merged
    erlend-aasland added a commit that referenced this issue Jun 23, 2023
    @erlend-aasland
    gh-85136: Remove disabled remote IMAP tests (#106022)
    37c5c40 
    Tests had been disabled since Jun 12, 2020 (gh-20836).
    @erlend-aasland
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    remove the tests (they're not running anyway)

    That sounds like a good idea to me.

    Resolved with:

    The remote IMAP tests are now removed in main.

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    @tiran tiran

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    3.7 (EOL) end of life 3.8 only security fixes 3.9 only security fixes 3.10 only security fixes easy tests Tests in the Lib/test dir type-bug An unexpected behavior, bug, or error
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    gh-85136: Remove disabled remote IMAP tests erlend-aasland/cpython
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    @vstinner @tiran @ned-deily @erlend-aasland