1CERTWATCH(1) Cryptography Utilities CERTWATCH(1)
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6 certwatch - generate SSL certificate expiry warnings
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9 certwatch [OPTION...] certname
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12 The certwatch program is used to issue warning mail when an SSL
13 certificate is about to expire.
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15 The program has two modes of operation: normal mode and quiet mode. In
16 normal mode, the certificate identified by the certname argument is
17 examined, and a warning email is issued to standard output if the
18 certificate is outside its validity period, or approaching expiry. If
19 the certificate cannot be found, or any errors occur whilst parsing the
20 certificate, the certificate is ignored and no output is produced. In
21 quiet mode, no output is given, but the exit status can still be used.
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23 The certificate can be specified in one of two ways. If the --configdir
24 option is used, the certname parameter is used as a nickname to
25 identify a certificate within an NSS database. Otherwise, the certname
26 parameter is treated as a filename containing a certificate in OpenSSL
27 "PEM" format.
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30 --quiet, -q
31 Enable quiet mode; no output is produced whether the certificate is
32 expired or not
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34 --period days, -p days
35 Specify the number of days within which an expiry warning will be
36 produced; default is 30. Expiry warnings are always produced if, on
37 the day of invocation, the certificate is not yet valid, has
38 already expired, or is due to expire either that day or the
39 following day.
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41 --address address, -a address
42 Specify the address used in the To field of the warning e-mail
43 issued if quiet mode is not enabled. The default is root.
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45 --configdir cert-directory, -d cert-directory
46 Specify the database directory containing the certificate and key
47 database files.
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49 --certdbprefix prefix, -c prefix
50 If --configdir is used, specify the prefix used for the certificate
51 database within the database directory.
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53 --keydbprefix prefix, -c prefix
54 If --configdir is used, specify the prefix used for the key
55 database within the database directory.
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58 The exit code indicates the state of the certificate:
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60 0
61 The certificate is outside its validity period, or approaching
62 expiry
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64 1
65 The certificate is inside its validity period, or could not be
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69 The certwatch program is run daily by crond from the file
70 /etc/cron.daily/certwatch to generate warning mail concerning the
71 imminent expiry of SSL certificates configured for use in the Apache
72 HTTP server. These warnings can be disabled by adding the line:
73 NOCERTWATCH=yes to the file /etc/sysconfig/httpd. Additional options to
74 pass to certwatch can be specified in that file in the CERTWATCH_OPTS
75 environment variable.
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78 /etc/cron.daily/certwatch, /etc/sysconfig/httpd
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81 genkey(1)
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85crypto-utils 2.5 13 July 2018 CERTWATCH(1)