This may be, in part related to [.p.c.v.i.ConfigItemStatusManagerImpl] Failed null:
I have this error message in the rancher server log:
2016-04-05 09:11:43,121 ERROR [:] [] [] [] [ecutorService-7] [.p.c.v.i.ConfigItemStatusManagerImpl] Failed null, exit code [7] output [INFO: Updating hosts
INFO: Downloading http://api.rancher.xxx.yyy.net/v1//configcontent//hosts current=hosts-143-46bf3f2cd5e10e348cea0a9b2c2f20e1ff10eda99e38ca8db85820b45973a1d8
INFO: Running /var/lib/cattle/download/hosts/hosts-151-257aff5cc23042701e4b6e49146ac4f33de95ee93d14f3484f87f4e23b378943/apply.sh
INFO: HOME -> ./
INFO: HOME -> ./etc/
INFO: HOME -> ./etc/cattle/
INFO: HOME -> ./etc/cattle/dns/
INFO: HOME -> ./etc/cattle/dns/answers.json
INFO: HOME -> ./etc/cattle/metadata/
INFO: HOME -> ./etc/cattle/metadata/answers.yml
[[scripts.sh:184] script_env
[[scripts.sh:109] '[' -n http://api.rancher.xxx.yyy.net/v1 ']'
[[scripts.sh:110] return
[[scripts.sh:186] export CATTLE_HOME=/var/lib/cattle
[[scripts.sh:186] CATTLE_HOME=/var/lib/cattle
[[scripts.sh:187] export CATTLE_CONFIG_URL=http://api.rancher.xxx.yyy.net/v1
[[scripts.sh:187] CATTLE_CONFIG_URL=http://api.rancher.xxx.yyy.net/v1
[[scripts.sh:188] export CATTLE_STORAGE_URL=http://api.rancher.xxx.yyy.net/v1
[[scripts.sh:188] CATTLE_STORAGE_URL=http://api.rancher.xxx.yyy.net/v1
[apply.sh:25] DNS=
[[apply.sh:27] cat /etc/resolv.conf
[[apply.sh:27] sed 's/^# nameserver/nameserver/'
[[apply.sh:27] grep '^nameserver'
[[apply.sh:27] awk '{print $2}'
[apply.sh:27] for address in '$(cat /etc/resolv.conf | sed '\''s/^# nameserver/nameserver/'\'' | grep ^nameserver | awk '\''{print $2}'\'')'
[apply.sh:28] '[' NN.NN.7.130 = 169.254.169.250 ']'
[apply.sh:32] '[' -z '' ']'
[apply.sh:33] DNS='"NN.NN.7.130"'
[apply.sh:27] for address in '$(cat /etc/resolv.conf | sed '\''s/^# nameserver/nameserver/'\'' | grep ^nameserver | awk '\''{print $2}'\'')'
[apply.sh:28] '[' NN.NN.6.130 = 169.254.169.250 ']'
[apply.sh:32] '[' -z '"NN.NN.7.130"' ']'
[apply.sh:35] DNS='"NN.NN.7.130", "NN.NN.6.130"'
[apply.sh:39] sed -i 's/"PARENT_DNS"/"NN.NN.7.130", "NN.NN.6.130"/g' content-home/etc/cattle/dns/answers.json
[apply.sh:41] stage_files
[scripts.sh:77] local monit=false
[scripts.sh:79] '[' -d content-home ']'
[scripts.sh:80] find content-home -name '*.sh' -exec chmod +x '{}' ';'
[scripts.sh:81] tar cf - -C content-home .
[scripts.sh:81] tar xvf - --no-overwrite-dir -C /var/lib/cattle
[scripts.sh:81] sed 's/^/INFO: HOME -> /'
INFO: HOME -> ./
INFO: HOME -> ./etc/
INFO: HOME -> ./etc/cattle/
INFO: HOME -> ./etc/cattle/dns/
INFO: HOME -> ./etc/cattle/dns/answers.json
INFO: HOME -> ./etc/cattle/metadata/
INFO: HOME -> ./etc/cattle/metadata/answers.yml
[scripts.sh:84] '[' -d content ']'
[scripts.sh:102] '[' false = true ']'
[apply.sh:43] ip addr add 169.254.169.250/32 dev eth0
[apply.sh:43] true
[apply.sh:44] ip route show
[apply.sh:44] grep -q 169.254.169.254
[apply.sh:48] reload_service rancher-dns 8113
[apply.sh:7] local service=rancher-dns
[apply.sh:8] local port=8113
[apply.sh:9] '[' '!' -e /etc/init.d/rancher-dns ']'
[[apply.sh:14] pidof rancher-dns
[apply.sh:14] PID=20022
[apply.sh:16] '[' -z 20022 ']'
[apply.sh:18] '[' -e /var/lib/cattle/etc/cattle/rancher-dns/http-reload ']'
[apply.sh:19] curl -sf -X POST http://localhost:8113/v1/reload
]
A couple of questions, first, which agent is this coming from?
Can I use the hosts-143-46bf3f2cd5e10e348cea0a9b2c2f20e1ff10eda99e38ca8db85820b45973a1d8 somehow to find out?
hmm… that was my only question right now… 
This is on rancher v1.0.0.