** Description changed:
- snmpd upgrade bionic->focal changes Debian-snmp UID/GID. Tested on two
- different machines, the result:
+ [Impact]
+
+ * Removeing users on "remove" instead of doing so only on "purge"
+ can lead to some fallout.
+
+ * We stopped doing so since 18.10, backporting the same fix to Bionic
+
+ [Test Case]
+
+ * grep snmp /etc/passwd
+ * apt remove net-snmp
+ * apt instal net-snmp
+ * grep snmp /etc/passwd
+
+ With the fix installed this should not change anymore when running the
+ above.
+
+ [Regression Potential]
+
+ * It was wrong to re-create the user every time, I don't see an issue "not
+ to remove it" on apt remove - if people want things gone they are using
+ "apt purge".
+ If anything first installs net-snmp, to then remove it and expects the
+ Debian-snmp is free that would change - but that seems like a very
+ constructed case.
+
+ * The real "potential" is that any upgrade will trigger the bug "once".
+ That includes this update - see below in [Other Info]
+
+ [Other Info]
+
+ * No matter which way we turn this, this bug will be triggered "once" when
+ the old postrm is run. We don't need/want to trigger it with this
+ update. Therefore the intention is to only make this available in -
+ proposed and mark it as block-proposed. On any later functional or
+ security update which would trigger the bug "anyway" it would then be
+ included and fixed.
+
+ ---
+
+
+ snmpd upgrade bionic->focal changes Debian-snmp UID/GID. Tested on two
different machines, the result:
#1
diff -u passwd.r15 passwd.local
--- passwd Rev. 15 (Fri Sep 13 10:35:32 2019)
+++ passwd Local version (Fri Apr 24 09:53:12 2020)
@@ -31,4 +31,6 @@ systemd-resolve:x:112:122:systemd Resolv
- uuidd:x:100:101::/run/uuidd:/bin/false
- _apt:x:114:65534::/nonexistent:/bin/false
- dhcpd:x:115:125::/var/run:/bin/false
- -Debian-snmp:x:109:118::/var/lib/snmp:/bin/false
- +tcpdump:x:109:126::/nonexistent:/usr/sbin/nologin
- +Debian-snmp:x:113:127::/var/lib/snmp:/bin/false
- +systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
+ uuidd:x:100:101::/run/uuidd:/bin/false
+ _apt:x:114:65534::/nonexistent:/bin/false
+ dhcpd:x:115:125::/var/run:/bin/false
+ -Debian-snmp:x:109:118::/var/lib/snmp:/bin/false
+ +tcpdump:x:109:126::/nonexistent:/usr/sbin/nologin
+ +Debian-snmp:x:113:127::/var/lib/snmp:/bin/false
+ +systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
#2
--- passwd Rev. 5 (Thu Feb 20 15:21:15 2020)
+++ passwd Local version (Wed Apr 29 17:28:58 2020)
@@ -31,6 +31,9 @@ postfix:x:111:114::/var/spool/postfix:/u
- bacula:x:112:116:Bacula:/var/lib/bacula:/usr/sbin/nologin
- mysql:x:113:117:MySQL Server,,,:/nonexistent:/bin/false
- nagios:x:114:118::/var/lib/nagios:/usr/sbin/nologin
+ bacula:x:112:116:Bacula:/var/lib/bacula:/usr/sbin/nologin
+ mysql:x:113:117:MySQL Server,,,:/nonexistent:/bin/false
+ nagios:x:114:118::/var/lib/nagios:/usr/sbin/nologin
-Debian-snmp:x:115:119::/var/lib/snmp:/bin/false
- elasticsearch:x:116:120::/nonexistent:/bin/false
- str_alk_prod:x:1000:1000:,,,:/home/str_alk_prod:/bin/bash
+ elasticsearch:x:116:120::/nonexistent:/bin/false
+ str_alk_prod:x:1000:1000:,,,:/home/str_alk_prod:/bin/bash
+systemd-timesync:x:115:119:systemd Time
Synchronization,,,:/run/systemd:/usr/sbin/nologin
+tcpdump:x:117:123::/nonexistent:/usr/sbin/nologin
+Debian-snmp:x:118:124::/var/lib/snmp:/bin/false
+systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
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https://bugs.launchpad.net/bugs/1875926
Title:
snmpd upgrade (Bionic->Focal) changes Debian-snmp UID/GID
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