We had been using java standard keystore ($JAVA_HOME/jre/lib/security/cacerts) as the trusted store for tomcat. And that tomcat server would communicate with some other server. A recent OS(AIX) upgrade apparently over-wrote the file at $JAVA_HOME/jre/lib/security/cacerts and that resulted in lost certificates and lot of issues with application hosted in tomcat.
Looking at this is it a bad practice to relay up on $JAVA_HOME/jre/lib/security/cacerts ? What are the alternate (better|standard) ways to tackle this scenario?
In terms of what is in the cacerts file, it's not necessarily worse practice than relying on the default CA certificates installed in your OS or your browser, but that doesn't mean it's great.
Sun/Oracle have a little "important note" somewhere in the middle of the JSSE Reference Guide about this:
IMPORTANT NOTE: The JDK ships with a limited number of trusted root certificates in the /lib/security/cacerts file. As documented in keytool, it is your responsibility to maintain (that is, add/remove) the certificates contained in this file if you use this file as a truststore.
Depending on the certificate configuration of the servers you contact, you may need to add additional root certificate(s). Obtain the needed specific root certificate(s) from the appropriate vendor.
In terms of configuration, for specific applications where I've had to install "local" CA certificates, I find it more stable to use a local trust store (for example, specified with javax.net.ssl.trustStore).
It's not a bad practice if you have a build process that will repeat the imports.
Not sure, but assuming your assumptions are correct, caution where you put your keystore. I would strongly suggest it is placed inside Apache folder.
By default in Websphere the keystore works this way, since it brings it's own JVM :)
Yes it is a bad practice to do that.
The best practice is to have to limit your trusted certificates as much as needed.
So you should have used you own keystore with only the certificates trusted by your application.
The AIX upgrade is a patch. Any patch must not delete / overwrite user data. I would suggest that users affected by this kind of data loss ask IBM to fix the patch procedure. In comparison, a patch of the httpd server does not overwrite / delete the configuration even though it is in the program directory.
来源：https://stackoverflow.com/questions/7895227/is-it-a-bad-practice-to-use-java-standard-keystore