Collectd does not work (19.07, non-default storage) [closed ]

Hello all,
Can someone help me with collectd, I can't get it to work on 19.07 ?!

OpenWrt
Model Linksys WRT1900ACS
Architecture ARMv7 Processor rev 1 (v7l)
Firmware Version OpenWrt 19.07-SNAPSHOT r11381-c72ea2a6c7 / LuCI openwrt-19.07 branch git-21.267.59215-1524972
Kernel Version 4.14.248

irqbalance
6in4	
adblock		
banip		
base-files		
block-mount		
busybox		
ca-bundle		
cgi-io		
chat		
collectd		
collectd-mod-conntrack		
collectd-mod-contextswitch		
collectd-mod-cpu	
collectd-mod-cpufreq	
collectd-mod-df	
collectd-mod-disk		
collectd-mod-dns		
collectd-mod-filecount	
collectd-mod-interface	
collectd-mod-iptables	
collectd-mod-irq	
collectd-mod-iwinfo		
collectd-mod-load		
collectd-mod-memory		
collectd-mod-netlink		
collectd-mod-network		
collectd-mod-openvpn		
collectd-mod-ping		
collectd-mod-processes		
collectd-mod-protocols		
collectd-mod-rrdtool	
collectd-mod-tcpconns	
collectd-mod-uptime		
collectd-mod-vmem		
collectd-mod-wireless		
comgt		
comgt-directip		
comgt-ncm		
conntrack		
cshark	
ddns-scripts	
dnsmasq-full		
dropbear		
ds-lite	
e2fsprogs		
edgeport-firmware		
etherwake	
fdisk	
firewall	
fstools	
fwtool		
getrandom	
hd-idle		
hostapd-common		
ip-tiny		
ip6tables		
ipset		
iptables		
iptables-mod-conntrack-extra		
iptables-mod-extra		
iptables-mod-filter		
iptables-mod-hashlimit		
iptables-mod-ipopt		
iptables-mod-iprange	
iptables-mod-ipv4options		
iptables-mod-led		
iptables-mod-length2				
iwinfo		
jshn		
jsonfilter	
kernel	
kmod-asn1-decoder		
kmod-cfg80211		
kmod-crypto-aead			
kmod-crypto-authenc	
kmod-crypto-crc32c		
kmod-crypto-ecb		
kmod-crypto-hash		
kmod-crypto-manager		
kmod-crypto-null	
kmod-crypto-pcompress	
kmod-crypto-sha1		
kmod-cryptodev		
kmod-dma-buf		
kmod-fs-ext4		
kmod-fuse	
kmod-gpio-button-hotplug		
kmod-gre	
kmod-ifb		
kmod-input-core	
kmod-ip6-tunnel	
kmod-ip6tables		
kmod-ipt-compat-xtables	
kmod-ipt-conntrack		
kmod-ipt-conntrack-extra		
kmod-ipt-core	
kmod-ipt-extra	
kmod-ipt-filter	
kmod-ipt-hashlimit		
kmod-ipt-ipopt		
kmod-ipt-iprange	
kmod-ipt-ipset	
kmod-ipt-ipv4options		
kmod-ipt-led		
kmod-ipt-length2		
kmod-ipt-nat		
kmod-ipt-nat6		
kmod-ipt-offload		
kmod-ipt-raw		
kmod-iptunnel		
kmod-iptunnel4		
kmod-iptunnel6		
kmod-ledtrig-heartbeat		
kmod-ledtrig-netdev		
kmod-lib-crc-ccitt		
kmod-lib-crc16		
kmod-lib-crc32c	
kmod-lib-textsearch		
kmod-libphy		
kmod-mac80211	
kmod-mii		
kmod-mppe	
kmod-mwlwifi 
kmod-nf-conntrack	
kmod-nf-conntrack-netlink	
kmod-nf-conntrack6		
kmod-nf-flow		
kmod-nf-ipt		
kmod-nf-ipt6	
kmod-nf-nat		
kmod-nf-nat6		
kmod-nf-nathelper		
kmod-nf-nathelper-extra		
kmod-nf-reject	
kmod-nf-reject6	
kmod-nfnetlink		
kmod-nls-base	
kmod-nls-cp437		
kmod-nls-cp850		
kmod-nls-cp852		
kmod-nls-iso8859-1		
kmod-nls-iso8859-2		
kmod-nls-utf8	
kmod-ppp	
kmod-pppoe		
kmod-pppox		
kmod-pptp			
kmod-sched-cake	
kmod-sched-core		
kmod-scsi-core		
kmod-sit	
kmod-slhc	
kmod-tun	
kmod-usb-acm	
kmod-usb-core		
kmod-usb-ehci	
kmod-usb-net	
kmod-usb-net-asix		
kmod-usb-net-asix-ax88179		
kmod-usb-net-cdc-eem	
kmod-usb-net-cdc-ether		
kmod-usb-net-cdc-mbim	
kmod-usb-net-cdc-ncm	
kmod-usb-net-cdc-subset		
kmod-usb-net-dm9601-ether		
kmod-usb-net-hso	
kmod-usb-net-huawei-cdc-ncm	
kmod-usb-net-ipheth		
kmod-usb-net-kalmia	
kmod-usb-net-kaweth	
kmod-usb-net-mcs7830		
kmod-usb-net-pegasus		
kmod-usb-net-pl		
kmod-usb-net-qmi-wwan		
kmod-usb-net-rndis		
kmod-usb-net-rtl8150		
kmod-usb-net-rtl8152		
kmod-usb-net-sierrawireless		
kmod-usb-net-smsc95xx		
kmod-usb-net-sr9700		
kmod-usb-ohci	
kmod-usb-printer	
kmod-usb-serial	
kmod-usb-serial-option	
kmod-usb-serial-sierrawireless		
kmod-usb-serial-wwan		
kmod-usb-storage		
kmod-usb-wdm	
kmod-usb2		
kmod-usb3		
kmod-video-core	
kmod-video-uvc		
kmod-video-videobuf2		
libblkid1	
libblobmsg-json		
libc	
libcomerr0
libelf1		
libext2fs2	
libfdisk1		
libgcc1		
libgmp10	
libip4tc2		
libip6tc2		
libipset13		
libiptc0		
libiwinfo-lua	
libiwinfo			
libjson-script		
libltdl7		
liblua5.1.5		
liblucihttp-lua		
liblucihttp0		
liblzo2		
libmbedtls12	
libmnl0	
libncurses6		
libnetfilter-conntrack3	
libnetfilter-cthelper0		
libnetfilter-cttimeout1	
libnetfilter-queue1	
libnettle7		
libnfnetlink0	
libnl-tiny	
libopenssl1.1		
liboping		
libpcap1		
libpthread		
librrd1	
librt		
libsmartcols1		
libss2
libubus-lua	
libubox
libubus
libuci	
libuclient	
libusb-1.0-0	
libustream-mbedtls
libuuid1	
libxtables12	
logd		
lua		
luci		
luci-app-adblock		
luci-app-advanced-reboot	
luci-app-banip		
luci-app-commands		
luci-app-cshark		
luci-app-ddns		
luci-app-firewall		
luci-app-hd-idle	
luci-app-nlbwmon		
luci-app-openvpn		
luci-app-opkg		
luci-app-p910nd		
luci-app-samba	
luci-app-sqm		
luci-app-statistics		
luci-app-uhttpd		
luci-app-upnp			
luci-app-wol	
luci-base	
luci-i18n-adblock-en		
luci-i18n-advanced-reboot-en		
luci-i18n-banip-en	
luci-i18n-base-en		
luci-i18n-commands-en		
luci-i18n-cshark-en		
luci-i18n-ddns-en	
luci-i18n-firewall-en		
luci-i18n-hd-idle-en		
luci-i18n-nlbwmon-en		
luci-i18n-openvpn-en		
luci-i18n-opkg-en	
luci-i18n-p910nd-en		
luci-i18n-samba-en		
luci-i18n-statistics-en	
luci-i18n-uhttpd-en		
luci-i18n-upnp-en	
luci-i18n-wifischedule-en	
luci-i18n-wol-en	
luci-lib-ip		
luci-lib-ipkg		
luci-lib-iptparser		
luci-lib-jsonc	
luci-lib-nixio		
luci-mod-admin-full		
luci-mod-network	
luci-mod-status	
luci-mod-system	
luci-proto-3g	
luci-proto-ipv6		
luci-proto-ncm	
luci-proto-ppp	
luci-proto-qmi
luci-ssl		
luci-theme-bootstrap		
luci-theme-material	
miniupnpd		
monit-nossl		
mtd		
mwifiex-pcie-firmware	
mwifiex-sdio-firmware	
mwlwifi-firmware-88w8864		
mwlwifi-firmware-88w8897		
mwlwifi-firmware-88w8964		
mwlwifi-firmware-88w8997	
nano		
netifd	
nlbwmon		
odhcp6c		
openssh-sftp-server	
openvpn-mbedtls	
openwrt-keyring		
opkg		
p910nd		
ppp	
ppp-mod-pppoe		
ppp-mod-pptp		
procd	
px5g-mbedtls	
resolveip	
rpcd	
rpcd-mod-file	
rpcd-mod-iwinfo
rpcd-mod-luci		
rpcd-mod-rrdns	
rrdtool1		
samba36-server		
sqm-scripts	
sqm-scripts-extra	
ss		
swconfig		
tc	
tcpdump
terminfo		
ubi-utils	
uboot-envtools	
ubox	
ubus		
ubusd		
uci		
uclient-fetch	
uhttpd	
umbim	
uqmi		
urandom-seed	
urngd	
usb-modeswitch		
usign		
wifischedule	
wireless-regdb	
wpad-basic	
wwan		
zlib
luci-app-attendedsysupgrade 
attendedsysupgrade-common 
luci-i18n-attendedsysupgrade-en




You forgot to mention that you are trying non-default options...
...especially regarding the storage directory.

The storage directory likely can't be the root of your USB stick /mnt/sda.Create and specify a subdir there.
Also note that the storage dir needs to be "world readable" like said in LuCI, so make sure to chmod it to at least 644.

can you help me please with an example, you could help me with the commands on the command line?

cd /mnt/sda
mkdir stats
chmod 644 stats

And then configure statistics rrdtool to store in /mnt/sda/stats

can be closed

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