upgrade openwrt and build own image zabbix

download OpenWrt-ImageBuilder

untar and jump into directory

 make image PROFILE=TLWA901 PACKAGES="-wpad-mini wpad luci zabbix-extra-mac80211 zabbix-extra-network zabbix-extra-wifi"

copy image into old running AP

scp ./bin/ar71xx/openwrt-15.05.1-ar71xx-generic-tl-wa901nd-v2-squashfs-fact
ory.bin root@192.168.1.23:/tmp/

ssh into AP

ssh root@[ip]
cd /tmp
sysupgrade -b backup.tar.gz # backup old config
sysupgrade -f ./backup.tar.gz ./openwrt-15.05.1-ar71xx
-generic-tl-wa901nd-v2-squashfs-factory.bin # install new image and restore old config

configure zabbix

echo "zabbix:x:100:100:zabbix:/var:/bin/false" >> /etc/passwd

edit /etc/zabbix_agentd.conf