debian on dell poweredge 13th gen – r630
i’ve received for testing a new dell r630. before buying few of those i wanted to make sure that debian wheezy has kernel including all the needed drivers. it seems that it has.
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Jacek Bartosiak o sytuacji Polski w obliczu wojny na Ukrainie
https://www.youtube.com/watch?v=QVpSi2r9Rn4 – swietny wyklad/dyskusja, bez emocji i bez zadecia. na dodatek: https://www.youtube.com/watch?v=VDKJWEcMCeI – Lech JÄ™czmyk – USA dziÅ› – Szeryf Åšwiata czy Imperium ZÅ‚a? https://www.youtube.com/watch?v=Kg2IvCh4lnM – Grzegorz Braun: Czy znów idziemy na wojnÄ™? https://www.youtube.com/watch?v=ipubiPXLb8g, https://www.youtube.com/watch?v=u5hckFKFfB0 – Jacek Bartosiak – o sytuacji Polski i Åšwiata
lxc under debian: flood of “init: Id “4” respawning too fast: disabled for 5 minutes” in the syslog and large /var/log/wtmp
docker seems to be the new fad… which i don’t use at all; but i’m quite happy with lxc and have it deployed in the production on couple of servers.
UNION instead of OR in MySQL
i have MySQL that is run on arrays of increasing size: i remembered that the query optimizer will not be able to use existing indices for lastModified columns but.. the query execution time was acceptable, so i did not bother. recently much more data was added and query above, repeated quite often, caused a lot ... Read More
balkans
i’ve sepnt two August/September weeks traveling with my parents from Dubrovnik via Sarajevo and Zagreb to Budapest. short brain-dump with hiking maps follows.
T-Centralen to Arlanda – available public transport options
there are few options of getting from Stockholm Central station [ T-Centralen ] to the Arlanda airport: Flygbuss – from City Terminalen next to the train station – 105SEK one way SJ / regular train – there are few trains each day going from Stockholm to Uppsala – starting from 125SEK if booked in advance. ... Read More
chodakiewicz – transformacja czy niepodlegÅ‚osc
marek jan chodakiewicz – calkiem calkiem, zwlaszcza pierwsze https://www.youtube.com/watch?v=CdGI2dDzwr8 https://www.youtube.com/watch?v=F3CPdWQ-6Pg
Service check did not exit properly from nagios plugin in perl
i’m setting up v6 on a few internet-facing servers. i’ve googled a bit and found dual-stack ipv4+ipv6 monitoring with nagios. i’ve started using the wrapper script check_v46 referred there and it works nicely. but i’ve run into a problem – execution of plugin gave me:
bundle file for Comodo’s PositiveSSL / apache2 + mod_ssl
generating csr is easy and well documented:
fsck on truecrypt
it’s high time to move away from truecrypt [ which i’m doing by moving to luks and btrfs on the top of it for extra thrills ], but i still have bunch of places that were not moved to the alternative full disk encryption. what do do when after unclean shutdown this happens: ?
vectorizing text in pdf – the cheap way
we were getting some logo printed and the print shop was not happy with the pdf we’ve provided – they had some problem with the embedded font and asked us to provide another pdf with vectorized curves instead of text. based on this – although the first method with gsview did not work for me ... Read More
OVH, failover IPs, IPv6, VMs
at work we rent a dedicated server from OVH; except unexplained openvpn throttling all is working pretty well for the price we pay. besides primary IPv4 address OVH can provide few additional ‘failover’ IPv4 addresses and /64 IPv6 subnet. in our setup some of IPv4s and IPv6s are routed to a KVM VM. below – ... Read More
forcing specific bonding slave network interface to be used as primary
sometimes after few lan failovers linux decides to use different bonding slave than i’d like it to. solution – remove from the bond interface acting as undesired master and then re-add it: … and nagios stops nagging.
gadowski – czy grozi nam balkanizacja
https://www.youtube.com/watch?v=0TC-gioyFwA + jako bonus https://www.youtube.com/watch?v=1LHLSkZ84pw
esxi 5.5: Call “HostDatastoreSystem.QueryVmfsDatastoreCreateOptions” for object “ha-datastoresystem” on ESXi “serverName” failed
i’m upgrading 2 PowerEdge R620 servers at work. both had originally 32GB of RAM, 10x 500GB SATA disks running in RAID10 and run vmware esxi. in the first step i’ve upgraded esxi from 5.1 to 5.5 [ bye bye 32GB memory limit ], in the 2nd – i’ve added 8x DELL SNP20D6FC/16G memory sticks to ... Read More
Jeczmyk – Idee za wielkie pieniÄ…dze
https://www.youtube.com/watch?v=7zPdd1adl-A cos czuje ze bedzie kolejny keyword do wyszukiwania i sluchania. dobrze prawi, nawet jest o moim ulubionym ‘kongresie futurologicznym’ lema.
idrac7 + ipmitool stopped working with firmware 1.56.55
i use ipmitool to check health of the poweredge servers from nagios. in essence i execute: and alert if the exist code is non-zero, then i execute and again – i alert on non-zero exit code, i also grep the file in search of lines not containing ok/ns. this was working fine for DRAC 5 ... Read More
Samsung CLX-4195FW – displaying only samsung logo on the front screen
newly arrived Samsung CLX-4195FW greeted me with just blue samsung’s logo on the white background presented on the front LCD screen; at the same time printer correctly acquired IP via DHCP and i could access the management interface via the network. i’ve called Samsung 3x and luckily enough at the 3rd attempt i spoke with ... Read More
mac changing on DW1501 wifi card
in dell’s e6220 that i use for work travels i have dw1501 wifi card. in theory it’s possible to change card’s MAC address in the control panel > network and sharing center > change adapter settings > wireless network connection > properties configure > advanced > locally administered MAC address. problem is the values i’ve ... Read More