Avamar: MCS starter ikke efter at have mistet mcserver.xml filen

Efter en annullering blev Management Console Server (MCS) gendannet.

Som en standard del af processen er /usr/local/avamar/var/mc/server_data mappen blev fjernet.

Da avtar bruger SSL-standardkrypteringen, mislykkedes MCS-gendannelsen, hvilket fjernede mcserver.xml-filen (hvilket resulterede i, at MCS ikke starter).

Bevis for tilbagekaldelse i gsan-logfilerne:

mapall --noerror 'grep -hi "rolled back" /data01/cur/gsan.log*' | sort | tail -1

2019/05/17-11:41:14.65109 {P0.0} [gsan]  <1287> gsan::run gsan rolled back to cp.xxxxxxxxxxxx 

Output fra dpnctl.log:

less dpnctl.log

2019/05/17-11:47:48 --restore will modify your Administrator Server database and preferences.
2019/05/17-11:47:48 Do you want to proceed with the restore Y/N? [Y]: sed: can't read /usr/local/avamar/var/mc/
server_data/prefs/mcserver.xml: No such file or directory
2019/05/17-11:47:48 sed: can't read /usr/local/avamar/var/mc/server_data/prefs/mcserver.xml: No such file or directory
2019/05/17-11:47:48 Decrypting all registered passwords...
2019/05/17-11:47:48 see MCCipher log for details: /usr/local/avamar/var/mc/server_log/mccipher.log.0
2019/05/17-11:47:48 Database server stopped.
2019/05/17-11:47:48 removing data dir /usr/local/avamar/var/mc/server_data
2019/05/17-11:47:48 INFO: /usr/local/avamar/var/mc already exists
2019/05/17-11:47:48 INFO: creating /usr/local/avamar/var/mc/server_data/postgres/data with permissions 0755
.
2019/05/17-11:47:48 Please wait....
2019/05/17-11:47:48 avtar Error <18838>: SSL certificate/key not found or invalid key. '/usr/local/avamar/etc/x.x.x.x/cert.pem' '/usr/local/avamar/etc/x.x.x.x/key.pem'
.
.
2019/05/17-11:47:48 rm -f /tmp/dpnctl-mcs-restore-status-6696 /tmp/dpnctl-mcs-restore-output-6696
2019/05/17-11:47:48 dpnctl: ERROR: MCS restore did not succeed, so not restarting MCS

Manuel notering af MC_BACKUPS ved hjælp af avtar resulterer i en fejl:

avtar --backups --path=/MC_BACKUPS |more 

avtar Info <5552>: Connecting to Avamar Server (xxxx)
avtar Info <5554>: Connecting to one node in each datacenter
avtar Error <18838>: SSL certificate/key not found or invalid key. '/usr/local/avamar/etc/x.x.x.x/cert.pem' '/usr/local/avamar/etc/x.x.x.x/key.pem'
avtar Info <5557>: No connections available
avtar FATAL <8604>: Fatal server connection problem, aborting initialization. Verify correct server address and login credentials.
avtar FATAL <5308>: Failed to initiate session with server
avtar Info <6149>: Error summary: 8 errors: 5308, 8604, 18838(6)
avtar Info <5314>: Command failed (8 errors, exit code 10008: cannot establish connection with server (possible network or DNS failure))

Gendannelse af MCS ved hjælp af standard SSL-kryptering mislykkes, da SSL-certifikatet og -nøglen ikke stemte overens.

Løsning:

1. Log på Avamar Utility-noden som administrator.

2. Gå til mappen /home/admin:

cd /home/admin 

3. Opret en ny midlertidig mappe:

mkdir mc_restore

4. Skift til det nyoprettede bibliotek:

cd /home/admin/mc_restore

5. Angiv de MC_BACKUPS, der tilføjer "--encrypt=proprietary" flag, som bruger en klartekstkryptering. (så ingen kryptering overhovedet):

avtar --archives --path=/MC_BACKUPS --count=1 --encrypt=proprietary

avtar Info <19849>: Selecting 1 backups
avtar Info <7377>: Backups for /MC_BACKUPS as of 2019-05-23 11:39:43 BST
    Date      Time    Seq       Label           Size     Plugin    Working directory         Targets
 ---------- -------- ----- ----------------- ---------- -------- --------------------- -------------------
 2019-05-15 08:45:32 10196                      526254K Linux    /usr/local/avamar     var/mc/server_data
avtar Info <5314>: Command completed (exit code 0: success)

6. Gendan /usr/local/avamar/var/mc/server_data mappe ved hjælp af efter pr. trin 3 i gendannelsesproceduren Avamar: MCS-skylning mislykkes, eller MCS starter ikke på grund af problemer med mcserver.xml filen:

F.eks.:

avtar -x --path=/MC_BACKUPS --labelnum=10196 --target=.

avtar Info <5259>: Restoring backup to directory "."
avtar Info <5262>: Restore completed
avtar Info <7925>: Restored 510.0 MB from selection(s) with 513.9 MB in 35 files, 17 directories
avtar Info <6090>: Restored 510.0 MB in 1.06 minutes: 28.26 GB/hour (1,986 files/hour)

Mappen gendannes til /home/admin/mc_restore/var/mc/server_data/.

7. Kopier indholdet af /home/admin/mc_restore/var/mc/server_data/ til det tomme /usr/local/avamar/var/mc/server_data mappe.

8. Gendan MCS ved hjælp af det gendannede etiketnummer:

mcserver.sh --restore --labelnum=10196

9. Start MCS:

 mcserver.sh --start 

Eksempel på output:

Starting Administrator Server at: Thu May 23 12:09:15 BST 2019
Starting Administrator Server...
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Administrator Server started.

10. Når du er startet, skal du udføre en MCS-flush (også kaldet backup):

mcserver.sh --flush

=== BEGIN === check.mcs (preflush)
check.mcs                        passed
=== PASS === check.mcs PASSED OVERALL (preflush)
Flushing Administrator Server...
Administrator Server flushed.
 

11. Regenerer SSL-certifikaterne i henhold til opløsningsafsnittet i Avamar: Avtar kan ikke oprette forbindelse til Avamars GSAN-tjeneste "Fatal server connection problem, interrupting initialization":

12. Angiv de MC_BACKUPS for at kontrollere, at der ikke er SSL-certifikatfejl:

avtar --archives --path=/MC_BACKUPS --count=10 

Eksempel på output:

avtar Info <19849>: Selecting 1 backups
avtar Info <7377>: Backups for /MC_BACKUPS as of 2019-05-23 11:39:43 BST
    Date      Time    Seq       Label           Size     Plugin    Working directory         Targets
 ---------- -------- ----- ----------------- ---------- -------- --------------------- -------------------
 2019-05-15 08:00:05   419                          73K Linux    /usr/local/avamar     var/em/server_data
 2019-05-14 08:00:04   418                          73K Linux    /usr/local/avamar     var/em/server_data
 2019-05-13 08:00:04   417                          73K Linux    /usr/local/avamar     var/em/server_data
avtar Info <5314>: Command completed (exit code 0: success)

Der er en anden mulighed for midlertidigt at overvinde SSL-fejlen i noteringen af MC_BACKUPS er at bruge --encrypt=tls flag: 

avtar --backups --path=/MC_BACKUPS --encrypt=tls | head -30