UEC: Troubleshooting jika VCPU free / max bernilai NOL
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Perhatikan free / max VCPU tidak 0, berisi angka hal ini berarti ada node yang terdaftar & bisa digunakan. Kita mempunyai masalah jika free / max bernilai 0 seperti di bawah ini
euca-describe-availability-zones verbose
AVAILABILITYZONE cluster1 192.168.0.2 AVAILABILITYZONE |- vm types free / max cpu ram disk AVAILABILITYZONE |- m1.small 0000 / 0000 1 192 2 AVAILABILITYZONE |- c1.medium 0000 / 0000 1 256 5 AVAILABILITYZONE |- m1.large 0000 / 0000 2 512 10 AVAILABILITYZONE |- m1.xlarge 0000 / 0000 2 1024 20 AVAILABILITYZONE |- c1.xlarge 0000 / 0000 4 2048 20
Jika kita melihat dalam daftar di atas free/max VCPU bernilai 0, hal ini berarti node (NC) tidak terdaftar secara automatis.
Jika ingin melakukan discovery Node pada Server, untuk mendiscover Node Controller (NC).
$ sudo euca_conf --discover-nodes
Hasilnya kira-kira adalah
ERROR: could not synchronize keys with fe80::215:17ff:fead:c7c1! The configuration will not have this node. Hint: to setup passwordless login to the nodes as user eucalyptus, you can run the following commands on node fe80::215:17ff:fead:c7c1: sudo -u eucalyptus mkdir -p ~eucalyptus/.ssh sudo -u eucalyptus tee ~eucalyptus/.ssh/authorized_keys > /dev/null <<EOT ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIlJ1AMIA2/fITDYu7gZHx1ivRKRTHLMmqGHX5mPywB2OPf25mFsOVLTvGNjHl1q6mKwCetAfFr4EI5nG8Qz9bLaDvFfeyUJlA+IE0mpIyultfFM173tMC0LMO5jGTJxuM+GuUittFeYtg+nR8CuVl6DBeYDOM1Ih1S5rWlJjJbwwOYniLzamCshbV7T1r/6oM09X5uJIka5Pm4JGduIw3xFeAttYAhkyvBdZnanlWq1J/Fm46v1HHZBsGcke6n7uNr2hq/QQpw1mmUA29fwQPl87Wd9U+7ZtlxJxYJD4HUa+9nimi9WvDB1PUWm+E8qOVtZIeBMUxIzcX2Pu9jPmz eucalyptus@cloud EOT Be sure that authorized_keys is not group/world readable or writable Trying rsync to sync keys with "fe80::fcb6:8aff:fe1d:8791"...ssh: Could not resolve hostname fe80: Name or service not known rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(601) [sender=3.0.7] failed.
Trying scp to sync keys to: eucalyptus@fe80::fcb6:8aff:fe1d:8791://var/lib/eucalyptus/keys/... ssh: Could not resolve hostname fe80: Name or service not known lost connection failed. ERROR: could not synchronize keys with fe80::fcb6:8aff:fe1d:8791! The configuration will not have this node. Hint: to setup passwordless login to the nodes as user eucalyptus, you can run the following commands on node fe80::fcb6:8aff:fe1d:8791: sudo -u eucalyptus mkdir -p ~eucalyptus/.ssh sudo -u eucalyptus tee ~eucalyptus/.ssh/authorized_keys > /dev/null <<EOT ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIlJ1AMIA2/fITDYu7gZHx1ivRKRTHLMmqGHX5mPywB2OPf25mFsOVLTvGNjHl1q6mKwCetAfFr4EI5nG8Qz9bLaDvFfeyUJlA+IE0mpIyultfFM173tMC0LMO5jGTJxuM+GuUittFeYtg+nR8CuVl6DBeYDOM1Ih1S5rWlJjJbwwOYniLzamCshbV7T1r/6oM09X5uJIka5Pm4JGduIw3xFeAttYAhkyvBdZnanlWq1J/Fm46v1HHZBsGcke6n7uNr2hq/QQpw1mmUA29fwQPl87Wd9U+7ZtlxJxYJD4HUa+9nimi9WvDB1PUWm+E8qOVtZIeBMUxIzcX2Pu9jPmz eucalyptus@cloud EOT
Lakuan perintah
sudo -u eucalyptus mkdir -p ~eucalyptus/.ssh sudo -u eucalyptus tee ~eucalyptus/.ssh/authorized_keys > /dev/null <<EOT ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIlJ1AMIA2/fITDYu7gZHx1ivRKRTHLMmqGHX5mPywB2OPf25mFsOVLTvGNjHl1q6mKwCetAfFr4EI5nG8Qz9bLaDvFfeyUJlA+IE0mpIyultfFM173tMC0LMO5jGTJxuM+GuUittFeYtg+nR8CuVl6DBeYDOM1Ih1S5rWlJjJbwwOYniLzamCshbV7T1r/6oM09X5uJIka5Pm4JGduIw3xFeAttYAhkyvBdZnanlWq1J/Fm46v1HHZBsGcke6n7uNr2hq/QQpw1mmUA29fwQPl87Wd9U+7ZtlxJxYJD4HUa+9nimi9WvDB1PUWm+E8qOVtZIeBMUxIzcX2Pu9jPmz eucalyptus@cloud EOT
sudo -u eucalyptus mkdir -p ~eucalyptus/.ssh sudo -u eucalyptus tee ~eucalyptus/.ssh/authorized_keys > /dev/null <<EOT ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIlJ1AMIA2/fITDYu7gZHx1ivRKRTHLMmqGHX5mPywB2OPf25mFsOVLTvGNjHl1q6mKwCetAfFr4EI5nG8Qz9bLaDvFfeyUJlA+IE0mpIyultfFM173tMC0LMO5jGTJxuM+GuUittFeYtg+nR8CuVl6DBeYDOM1Ih1S5rWlJjJbwwOYniLzamCshbV7T1r/6oM09X5uJIka5Pm4JGduIw3xFeAttYAhkyvBdZnanlWq1J/Fm46v1HHZBsGcke6n7uNr2hq/QQpw1mmUA29fwQPl87Wd9U+7ZtlxJxYJD4HUa+9nimi9WvDB1PUWm+E8qOVtZIeBMUxIzcX2Pu9jPmz eucalyptus@cloud EOT