X0: Unable to resolve host name localhost
  Fatal error #-700 while opening database
  Secondary status = -2
  DBOPEN(9): REMOTE: Unable to connect server [-700:-2]

This message indicates a system configuration problem. Eloquence fails to translate the host name "localhost" (that indicates the local system) to the appropriate IP address (127.0.0.1).

Usually this indicates that DNS lookup of hostnames is configured for the system (the /etc/resolv.conf file specifies a list of nameservers) but the DNS server does not specify a localhost entry.

In addition the /etc/nsswitch.conf files does not specify a fallback to /etc/hosts (or the /etc/hosts configuration file does not include an entry for localhost).

How to fix it:

• Make sure your /etc/hosts file has an appropriate entry for localhost (something like below)

  127.0.0.1       localhost       loopback
  

• Make sure your /etc/nsswitch.conf file specifies a fallback to /etc/hosts, for example

  hosts:        dns [NOTFOUND=continue] files
  

As a quick workaround the EQ_DBSERVER environment variable could be used to speify a default server of 127.0.0.1 instead of the builtin default localhost. This avoids the lookup for localhost.

For example

export EQ_DBSERVER=127.0.0.1