On 15.03.2023 12:10, Dominik Csapak wrote:
hi not sure we would want to do it this way, since
this will only work for the node where the new pve-cluster
is installed, the other nodes will not be able to update their
local database with the info from the new nodes
AFAIR, the way we dealt with rrd updates in the past is
that we introduced a new db (like pve2.3-vm) which is also
not available on older nodes, but it does not error out, since
it won't match and we don't try to update it
I thought I had tested that and it would just discard the value, instead
of erroring. but I'll check again, not sure rn
On 1/25/23 12:29, Matthias Heiserer wrote:
To modify the existing rrd store, rrdtool is required
Signed-off-by: Matthias Heiserer <[email protected]>
---
data/src/status.c | 1 +
debian/control | 1 +
debian/pve-cluster.postinst | 6 ++++++
3 files changed, 8 insertions(+)
create mode 100644 debian/pve-cluster.postinst
diff --git a/data/src/status.c b/data/src/status.c
index 5e1e841..9290141 100644
--- a/data/src/status.c
+++ b/data/src/status.c
@@ -1130,6 +1130,7 @@ static const char *rrd_def_node[] = {
"DS:rootused:GAUGE:120:0:U",
"DS:netin:DERIVE:120:0:U",
"DS:netout:DERIVE:120:0:U",
+ "DS:arcsize:GAUGE:120:0:U",
"RRA:AVERAGE:0.5:1:70", // 1 min avg - one hour
"RRA:AVERAGE:0.5:30:70", // 30 min avg - one day
diff --git a/debian/control b/debian/control
index 2d5a01f..22d96c2 100644
--- a/debian/control
+++ b/debian/control
@@ -37,6 +37,7 @@ Depends: corosync (>= 2.3.4-1),
libsqlite3-0,
sqlite3,
systemd,
+ rrdtool,
${misc:Depends},
${perl:Depends},
${shlibs:Depends},
diff --git a/debian/pve-cluster.postinst b/debian/pve-cluster.postinst
new file mode 100644
index 0000000..cf475cc
--- /dev/null
+++ b/debian/pve-cluster.postinst
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+RRD_DB="/var/lib/rrdcached/db/pve2-node/`hostname`"
+if [ -f $RRD_DB ] && [ `rrdtool info $RRD_DB | grep -q arcsize` ]; then
+ rrdtool tune $RRD_DB 'DS:arcsize:GAUGE:120:0:U'
+fi
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