After upgrading from 4.4.1-r1 to 4.5.1, using a SQLite back-end, PowerDNS fails to start claiming that the database does not exist. Re-emerging back 4.4.1-r1 restores functionality. Reproducible: Always syslog of 4.5.1 vs (restored) 4.4.1-r1 Oct 01 14:56:14 [pdns] Loading '/usr/lib64/powerdns/pdns/libgsqlite3backend.so' Oct 01 14:56:14 [pdns] This is a standalone pdns Oct 01 14:56:14 [pdns] Listening on controlsocket in '/var/lib/pdns/pdns.controlsocket' Oct 01 14:56:14 [pdns] gsqlite3: connection failed: SQLite database 'pdns.sqlite3.db' does not exist yet Oct 01 14:56:14 [pdns] Caught an exception instantiating a backend: Unable to launch gsqlite3 connection: SQLite database 'pdns.sqlite3.db' does not exist yet Oct 01 14:56:14 [pdns] Cleaning up Oct 01 14:56:14 [pdns] Fatal error: Unable to launch gsqlite3 connection: SQLite database 'pdns.sqlite3.db' does not exist yet Oct 01 15:00:36 [pdns] Loading '/usr/lib64/powerdns/pdns/libgsqlite3backend.so' Oct 01 15:00:36 [pdns] This is a standalone pdns Oct 01 15:00:36 [pdns] Listening on controlsocket in '/var/lib/pdns/pdns.controlsocket' Oct 01 15:00:36 [pdns] UDP server bound to 0.0.0.0:54 Oct 01 15:00:36 [pdns] TCP server bound to 0.0.0.0:54 Oct 01 15:00:36 [pdns] PowerDNS Authoritative Server 4.4.1 (C) 2001-2020 PowerDNS.COM BV Oct 01 15:00:36 [pdns] Using 64-bits mode. Built using gcc 10.3.0 on Sep 30 2021 05:15:39 by portage@localhost. Oct 01 15:00:36 [pdns] PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2. Oct 01 15:00:36 [pdns] Chrooted to '/var/lib/pdns' Oct 01 15:00:36 [pdns] Polled security status of version 4.4.1 at startup, no known issues reported: OK Oct 01 15:00:36 [pdns] Creating backend connection for TCP Oct 01 15:00:36 [pdns] Master/slave communicator launching Oct 01 15:00:36 [pdns] About to create 3 backend threads for UDP Oct 01 15:00:36 [pdns] Done launching threads, ready to distribute questions
Upstream doesn't report any breaking changes from 4.4.1 to 4.5.1 and has no open issues. I wanted to help in determining the root of the issue trying to use the ebuild command, doing unpack, replacing the source tree with a git clone of upstream's repo, then git bisect-ing, compile, merge. Unfortunately the git repo and the source package used by gentoo are very different and the procedure doesn't work. This prevents me, with my limited knowledge, to help. If guided, I'm willing to go further.
I suspect it is https://github.com/PowerDNS/pdns/pull/9464 and the contained commit https://github.com/PowerDNS/pdns/commit/d5385b3570b0d8c13626dcb4cd8fe5fc344db16d#diff-ddb1bcfaa39977012e0eee48d311eac1e18d87c6bd5b59de7116337518a3fa40 This added instantiation of the backends before the process has called chroot()+ chdir() and dropped privileges, resulting in not finding the configured database file, because your configuration references it by a relative path. I've opened https://github.com/PowerDNS/pdns/issues/10829
This should be fixed in the 4.7.x series.
