Two days ago I started using SSH to transfer backups of two Linux servers to another one. I created a shell script to run it in Crontab.
Both servers are using
Ubuntu 14.04.5 LTS
My SQL-Server works fine, it does create a backup of the database, and then it runs the SSH script to send the file to the Backup Server.
Now, the Webpage Server it's the one I'm having problems with. The script works if I use it manually, but, in cron it doesn't work. I've even did backup of the .ssh folder, and did the exact same steps as the SQL-Server, and what it puts is
Host key verification failed. rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: unexplained error (code 255) at io.c(226) [sender=3.1.0]
The backup script is as follows named backup.sh:
#!/bin/sh /usr/bin/rsync -e 'ssh -i /home/hostUser/.ssh/id_rsa' -avzp --delete /path/folder/ userRemote@IP:/path/to/backup/
This is how I have my Cron task
00 00 * * * sh /home/hostUser/backup.sh >> /var/log/backup.log 2>&1
I generated the rsa key with
ssh-keygen -t rsa
Where I have to input to save the key.
The way I've made the conection is as follows:
And copying the key with:
ssh-copy-id -i ~/.ssh/id_rsa.pub remoteUser@IP
I've done this steps in order for me to log in remotely. Using ssh -v userRemote@IP
OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to remoteUserIP [remoteUserIP] port 22. debug1: Connection established. debug1: identity file /home/hostUser/.ssh/id_rsa type 1 debug1: identity file /home/hostUser/.ssh/id_rsa-cert type -1 debug1: identity file /home/hostUser/.ssh/id_dsa type -1 debug1: identity file /home/hostUser/.ssh/id_dsa-cert type -1 debug1: identity file /home/hostUser/.ssh/id_ecdsa type -1 debug1: identity file /home/hostUser/.ssh/id_ecdsa-cert type -1 debug1: identity file /home/hostUser/.ssh/id_ed25519 type -1 debug1: identity file /home/hostUser/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.10 debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.10 pat OpenSSH_6.6.1* compat 0x04000000 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr email@example.com none debug1: kex: client->server aes128-ctr firstname.lastname@example.org none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA 73:de:35:34:54:46:00:f1:c6:1c:8e:bf:19:50:45:bc debug1: Host 'remoteUserIP' is known and matches the ECDSA host key. debug1: Found key in /home/hostUser/.ssh/known_hosts:1 debug1: ssh_ecdsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/hostUser/.ssh/id_rsa debug1: Server accepts key: pkalg ssh-rsa blen 279 debug1: key_parse_private2: missing begin marker debug1: read PEM private key done: type RSA debug1: Authentication succeeded (publickey). Authenticated to remoteUserIP ([remoteUserIP]:22). debug1: channel 0: new [client-session] debug1: Requesting email@example.com debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = es_MX.UTF-8 Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-31-generic x86_64) * Documentation: https://help.ubuntu.com/ System information as of Fri Aug 17 10:38:39 CDT 2018 System load: 0.0 Processes: 135 Usage of /: 65.4% of 1.70TB Users logged in: 0 Memory usage: 19% IP address for em1: remoteUserIP Swap usage: 0% Graph this data and manage this system at: https://landscape.canonical.com/ 72 packages can be updated. 9 updates are security updates. New release '16.04.5 LTS' available. Run 'do-release-upgrade' to upgrade to it. *** Es necesario reiniciar el sistema *** Last login: Fri Aug 17 10:37:18 2018 from hostUserIP
How can I make it to work, it's weird since I can make it to work on my SQL-Server.
Thanks in advance.