Hello Michael,
On Fri, 18 Jan 2019 01:19:36 -0500 Michael Welsh Duggan <[email protected]> wrote: > Package: solr-tomcat > Version: 3.6.2+dfsg-16 > Severity: important > > Dear Maintainer, > > After updating tomcat to tomcat9 and solr-tomcat to 3.6.2+dfsg-16, it > seems to be having problems writing to its index directory. The > problem surfaced when using dovecot to look up messages. Attached is > the error from the catalina log. > > /var/lib/solr/index does look like it has the right permissions: > /var/lib/solr/data and /var/lib/solr/data/index are owned by > tomcat:tomcat, permissions 770, and tomcat seems to be running as user > tomcat. I have verified that I can write to the directory as root, > and as such it's not on a read-only filesystem. I have no idea why it > fails to write the lock file. Could you try the following? Please copy the tomcat9.service file to /etc/systemd/system and modify it by adding ReadWritePaths=/var/lib/solr/ ReadWritePaths=/var/lib/solr/data to the # Security paragraph. Then execute systemctl daemon-reload. This should whitelist the solr directories and writing to them should be possible again. This is caused by restrictive systemd settings like ProtectSystem=strict. I think Debian's tomcat9 package could allow this by default but we could probably add a NEWS and README file to solr-tomcat too and explain the steps to make it work. Regards, Markus
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