pmdas: add chronyd pmda

src/pmdas/GNUmakefile

@@ -41,7 +41,7 @@ PYPMDAS = gluster zswap unbound mic haproxy \
 	libvirt lio openmetrics opentelemetry \
 	elasticsearch bpftrace mssql netcheck \
 	rabbitmq openvswitch nfsclient mongodb \
-	uwsgi rocestat hdb rds
+	uwsgi rocestat hdb rds chrony
 
 SUBDIRS = $(CPMDAS) $(PLPMDAS) $(PYPMDAS)
 LDIRT = pmcd.conf

src/pmdas/chrony/GNUmakefile

@@ -0,0 +1,53 @@
+#
+# Copyright (c) 2026 Nutanix, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+
+TOPDIR = ../../..
+include $(TOPDIR)/src/include/builddefs
+
+IAM	= chrony
+PYSCRIPT = pmda$(IAM).python
+LDIRT	= domain.h root pmns $(IAM).log
+DOMAIN	= CHRONY
+
+PMDAADMDIR = $(PCP_PMDASADM_DIR)/$(IAM)
+PMDATMPDIR = $(PCP_PMDAS_DIR)/$(IAM)
+
+MAN_SECTION = 1
+MAN_PAGES = pmda$(IAM).$(MAN_SECTION)
+MAN_DEST = $(PCP_MAN_DIR)/man$(MAN_SECTION)
+
+default_pcp default:	build-me
+
+include $(BUILDRULES)
+
+ifeq "$(HAVE_PYTHON)" "true"
+build-me:	check_domain
+install_pcp install:	default
+	$(INSTALL) -m 755 -d $(PMDAADMDIR)
+	$(INSTALL) -m 755 -d $(PMDATMPDIR)
+	$(INSTALL) -m 755 -t $(PMDATMPDIR) Install Remove $(PYSCRIPT) $(PMDAADMDIR)
+	@$(INSTALL_MAN)
+else
+build-me:
+install_pcp install:
+endif
+
+check_domain:	../../pmns/stdpmid
+	$(DOMAIN_PYTHONRULE)
+
+check:: $(PYSCRIPT)
+	$(PYLINT) $^
+
+check:: $(MAN_PAGES)
+	$(MANLINT) $^

src/pmdas/chrony/Install

@@ -0,0 +1,27 @@
+#! /bin/sh
+#
+# Copyright (c) 2026 Nutanix, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# Install the chrony PMDA
+#
+
+. $PCP_DIR/etc/pcp.env
+. $PCP_SHARE_DIR/lib/pmdaproc.sh
+
+iam=chrony
+python_opt=true
+daemon_opt=false
+
+pmdaSetup
+pmdaInstall
+exit

src/pmdas/chrony/Remove

@@ -0,0 +1,26 @@
+#! /bin/sh
+#
+# Copyright (c) 2026 Nutanix, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# Remove the chrony PMDA
+#
+
+. $PCP_DIR/etc/pcp.env
+. $PCP_SHARE_DIR/lib/pmdaproc.sh
+
+iam=chrony
+python_opt=true
+
+pmdaSetup
+pmdaRemove
+exit

src/pmdas/chrony/pmdachrony.1

@@ -0,0 +1,71 @@
+'\"macro stdmacro
+.\"
+.\" Copyright (c) 2014 Red Hat.
+.\" Copyright (c) 2026 Nutanix, Inc.
+.\"
+.\" This program is free software; you can redistribute it and/or modify it
+.\" under the terms of the GNU General Public License as published by the
+.\" Free Software Foundation; either version 2 of the License, or (at your
+.\" option) any later version.
+.\"
+.\" This program is distributed in the hope that it will be useful, but
+.\" WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+.\" or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+.\" for more details.
+.\"
+.\"
+.TH PMDACHRONY 1 "PCP" "Performance Co-Pilot"
+.SH NAME
+\f3pmdachrony\f1 \- chronyd PMDA
+.SH DESCRIPTION
+\f3pmdachrony\f1 is a Performance Metrics Domain Agent (PMDA) which exports
+metric values from chronyd, as exposed by the
+.B chronyc
+utility.
+.SH INSTALLATION
+Install the chrony PMDA by using the Install script as root:
+.sp 1
+.RS +4
+.ft B
+.nf
+# cd $PCP_PMDAS_DIR/chrony
+# ./Install
+.fi
+.ft P
+.RE
+.sp 1
+.PP
+To uninstall, do the following as root:
+.sp 1
+.RS +4
+.ft B
+.nf
+# cd $PCP_PMDAS_DIR/chrony
+# ./Remove
+.fi
+.ft P
+.RE
+.sp 1
+\fBpmdachrony\fR is launched by \fIpmcd\fR(1) and should never be executed
+directly. The Install and Remove scripts notify \fIpmcd\fR(1) when the
+agent is installed or removed.
+.SH FILES
+.IP "\fB$PCP_PMDAS_DIR/chrony/Install\fR" 4
+installation script for the \fBpmdachrony\fR agent
+.IP "\fB$PCP_PMDAS_DIR/chrony/Remove\fR" 4
+undo installation script for the \fBpmdachrony\fR agent
+.IP "\fB$PCP_LOG_DIR/pmcd/chrony.log\fR" 4
+default log file for error messages from \fBpmdachrony\fR
+.SH PCP ENVIRONMENT
+Environment variables with the prefix \fBPCP_\fR are used to parameterize
+the file and directory names used by \fBPCP\fR. On each installation, the
+file \fB/etc/pcp.conf\fR contains the local values for these variables.
+The \fB$PCP_CONF\fR variable may be used to specify an alternative
+configuration file, as described in \fIpcp.conf\fR(5).
+.SH SEE ALSO
+.BR PCPIntro (1)
+and
+.BR pmcd (1).
+
+.\" control lines for scripts/man-spell
+.\" +ok+ pmdachrony chrony