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Showing posts from April, 2020

Secure CockroachDB with Custom Common Name

CockroachDB out of the box comes with ability to generate certificates with cockroach cert command. This command will provision certs for client and nodes. One common gap we get from our customers is the explicit reliance on CN=node and CN=root . In our latest development release, we're introducing ability to map root and node principals to custom CNs. The process bypasses cockroach cert command in favor of openssl utility. It is very well documented and I recorded a live walk-through of the entire process. I am including my openssl configuration files for convenience: ca.cnf # OpenSSL CA configuration file [ ca ] default_ca = CA_default [ CA_default ] default_days = 365 database = index.txt serial = serial.txt default_md = sha256 copy_extensions = copy unique_subject = no # Used to create the CA certificate. [ req ] prompt=no distinguished_name = distinguished_name x509_extensions = extensions [ distinguished_name ] organizationName = Example Inc commonName = Exampl

What is insecure may never break: CockroachDB insecure cluster take over

I came across an interesting scenario last week. A customer had asked whether it is possible to secure a previously insecure cluster. The short answer is yes. Now, Cockroach Labs does not recommend running an insecure cluster in production. There are only a few additional steps necessary to secure an instance, so why do it? Convenience, you say. It can hurt you down the line but fret not, this article will demonstrate how to fix this. We are going to follow the standard insecure cluster start up procedure . Once complete, we're going to flip to the documentation for a secure cluster to turn each node on with security enabled. Here's a handy video of the procedure in action: I also included the step by step instructions below:

New tricks in CockroachDB: Sql statement redirection from an external file

CockroachDB is the SQL database for building global, scalable cloud services that survive disasters. It is designed to be a Postgresql compatible database with distributed roots. The Postgresql compatibility is being built from scratch in Go. That said, product is undergoing fast pace of innovation and development. One convenience method of passing sql statements from an external file to CLI has been missing. It is not available in the current GA release and I opened a GitHub issue to implement it. In lieu of available convenience option, this post will discuss other methods of achieving the same. Scenario I have a table called population with the following schema: CREATE TABLE population ( state CHAR(2) NULL, city STRING NULL, population INT8 NULL, FAMILY "primary" (state, city, population, rowid) ) The associated CSV file has the following structure: IN,Evansville,7415326 TX,Fo