HowTo Get a slapd Stack Trace Using gdb

Setup Make sure gdb is installed:

which gdb

If possible, install the following:

symas-libevent-libs symas-openldap-debuginfo symas-openldap-devel symas-openldap-libs

Create the file “bt_wait.gdb” (update the config path):

set confirm off
set pagination off
set logging file backtrace.txt
set logging on
handle SIGPIPE noprint nopass ignore
file /opt/symas/lib/slapd
run -d0 -F <path to slapd.d> -h "ldap:///"
thread apply all bt full
set logging off
quit

Run the script in gdb:

gdb -x bt_wait.gdb

If slapd crashes, there will be a file named “backtrace.txt” in the current working directory.