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--- wiki:nagios_troubleshooting [2024/03/21 15:28] – add Debian 12 instructions antisa
+++ wiki:nagios_troubleshooting [2024/04/12 14:00] (current) – add undefined reference to `get_dh2048' nrpe antisa
@@ Line 99: / Line 99: @@
 You could also remove this file (but first stop nagios and make a backup!) which will force reread of all configs and schedule the check for all hosts and services, so make sure you want this.
+===== undefined reference to `get_dh2048' nrpe =====
+Happened when trying to make install nrpe version 3.2.0 on Debian 12. Used version nrpe 4.1.0.and problem went away.
+===== Cannot write to pidfile '/var/run/nrpe.pid' - check your privileges. =====
+Check the pid in nrpe.cfg and the nrpe.service file, The paths should match there.
+  ~# grep pid /usr/local/nagios/etc/nrpe.cfg
+  pid_file=/var/run/nrpe.pid
+<code>
+systemctl cat nrpe
+# /lib/systemd/system/nrpe.service
+[Unit]
+Description=Nagios Remote Plugin Executor
+Documentation=http://www.nagios.org/documentation
+After=var-run.mount nss-lookup.target network.target local-fs.target time-sync.target
+Before=getty@tty1.service plymouth-quit.service xdm.service
+Conflicts=nrpe.socket
+[Install]
+WantedBy=multi-user.target
+[Service]
+Type=simple
+Restart=on-abort
+PIDFile=/usr/local/nagios/var/nrpe.pid <<--- THIS
+</code>
+Here the fix was to update the nrpe.cfg with the path from systemd file.
 ====== See also ======
   * [[wiki:icinga_troubleshooting|Icinga troubleshooting]]